Intuthuko ocwaningweni lokulahlekelwa okushisayo kokushaja ibhethri ye-lithium

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Abstract: Isifinyezo senqubekelaphambili yakamuva namathemba okuthuthukiswa kocwaningo lwebhethri ye-lithium-ion yokuvikeleka okuphezulu. Okubalulekile kusukela ekuzinzeni kokushisa okuphezulu kwama-electrolyte nama-electrode, izimbangela zokungazinzi kokushisa kwamabhethri e-lithium ion kanye nezindlela zabo ziye zacacisa ukuthi uhlelo olukhona lwebhethri ye-lithium-ion yezohwebo ayanele emazingeni okushisa aphezulu, luhlongoza ukuthuthukisa ama-electrolyte okushisa aphezulu, ukuguqulwa okuhle nokubi kanye nokuphathwa kwebhethri yangaphandle, njll. ukuklama amabhethri e-lithium-ion avikeleke kakhulu.

I-Outlook ekuthuthukisweni kwethemba lobuchwepheshe lokuthuthukiswa kwamabhethri e-lithium-ion okuphepha. 0 Isingeniso Amabhethri e-lithium ion aba ummeleli ojwayelekile wohlobo olusha lwamandla ngenxa yezindleko zawo eziphansi, ukusebenza okuphezulu, amandla aphezulu, nendawo eluhlaza, asetshenziswa kakhulu emikhiqizweni yedijithali ye-3C, amandla eselula namathuluzi kagesi. Eminyakeni yamuva, ngenxa yokuqina kokungcoliswa kwemvelo kanye nokuqondiswa kwenqubomgomo kazwelonke, imakethe yezimoto zikagesi ezisekelwe emotweni inyuse isidingo samabhethri e-lithium-ion, ohlelweni lokuthuthukisa amasistimu ebhethri e-lithium-ion enamandla amakhulu, izinkinga zokuphepha kwebhethri zidonse ukunaka okukhulu, Izinkinga ezikhona zidinga ukuxazululwa ngokuphuthumayo.

Ukushintsha kwezinga lokushisa kwesistimu yebhethri kunqunywa ukuvela kokushisa nokusabalalisa izici ezimbili. Ukuvela kokushisa kwebhethri ye-lithium ion kubalulekile kubangelwa ukusabela phakathi kokubola okushisayo nezinto zebhethri. Yehlisa ukushisa kwesistimu yebhethri futhi uthuthukise isistimu yokusebenza kwe-anti-high lokushisa, isistimu yebhethri iphephile.

Futhi imishini encane ephathekayo efana nomakhalekhukhwini, umthamo webhethri ye-laptop ngokuvamile ungaphansi kuka-2AH, futhi amandla ohlobo lwebhethri ye-lithium-ion asetshenziswa ezimotweni zikagesi ngokuvamile makhulu kuno-10ah, futhi izinga lokushisa lendawo livame ukuba ngaphezu kuka-55 ° C ngesikhathi sokusebenza okujwayelekile, futhi izinga lokushisa langaphakathi lizofinyelela ku-300 ° C, Ngaphansi kokushisa okuphezulu noma izinga elikhulu lokushaja kanye nezimo zokukhishwa kanye nezimo zokukhishwa, ekugcineni kubangele ukusabela kokushisa nochungechunge lwe-flamm. okuholela ekungalawuleni okushisayo kanye nokusha kwebhethri noma ukuqhuma [3]. Ngokungeziwe kuzici zayo zokusabela kwamakhemikhali, abanye abantu banomjikelezo omfushane obangelwa ukushisa ngokweqile, ukudlula, kanye nomthelela womshini, ezinye izici zokwenziwa zingaholela ekwenzeka kwebhethri ye-lithium-ion ukuze kubangele izingozi zokuphepha. Ngakho-ke, kubalulekile ukufunda nokuthuthukisa izinga lokushisa eliphezulu lamabhethri e-lithium-ion.

I-1 ye-thermal out-of-control cause analysis of the thermal out of control of lithium-ion battery ibalulekile ngoba izinga lokushisa langaphakathi lebhethri liyakhuphuka. Njengamanje, isistimu ye-electrolyte esetshenziswa kakhulu kumabhethri e-lithium-ion yezentengiselwano iyisisombululo esixubile se-carbonate se-LiPF6. I-solvent enjalo inokuguquguquka okuphezulu, indawo ephansi ye-flash, kulula kakhulu ukuyishisa.

Uma isifunda esifushane sangaphakathi esibangelwa ukushayisana noma ukukhubazeka, inani elikhulu lokushaja nokukhipha nokudlula, kuzoba nokushisa okuningi, okuholela ekukhuphuleni izinga lokushisa lebhethri. Uma ufinyelela izinga elithile lokushisa, uchungechunge lokusabela kokubola luzobangela ibhalansi yokushisa yebhethri ukuthi yonakaliswe. Uma ukushisa okukhishwe yilokhu kusabela kwamakhemikhali kungakwazi ukukhishwa ngesikhathi, kuzokhuphula ukuqhubeka kokusabela, futhi kubangele uchungechunge lokusabela okuseceleni kokuzishisa.

Izinga lokushisa lebhethri likhuphuka kakhulu, okungukuthi, "i-thermal out of control", ekugcineni iholele ekushisweni kwebhethri, futhi ngisho nokuqhuma kwenzeka kakhulu. Ngokuvamile, imbangela yokushisa ngaphandle kokulawula ibhethri ye-lithium-ion ibalulekile ekungazinzini kokushisa kwe-electrolyte, kanye nokungazinzi kokushisa kwe-electrolyte kanye nokuhlalisana okuhle nokubi kwe-electrode. Njengamanje, kusukela esicini esikhulu, ukuphepha kwamabhethri e-lithium-ion kubalulekile ekuphathweni kwangaphandle kanye nomklamo wangaphakathi ukulawula izinga lokushisa langaphakathi, i-voltage, nokucindezela komoya ukuze kuzuzwe izinjongo zokuphepha.

2 Ukuxazulula isu le-thermal out of control 2. Ukuphatha kwangaphandle 1) Ingxenye ye-PTC (i-coefficient yokushisa ephozithivu): Faka ingxenye ye-PTC ebhethrini le-lithium ion, ecabangela ingcindezi nezinga lokushisa ngaphakathi kwebhethri, futhi lapho ibhethri lifudunyezwa ngokushajwa ngokweqile, ibhethri liba ngu-10 Ukumelana kuyanyuka ukuze kukhawulwe amandla amanje, futhi i-voltage phakathi kwezigxobo ezinhle nezingezinhle iyancipha ibe i-voltage ephephile ukuze ibone umsebenzi wokuvikela okuzenzakalelayo webhethri. 2) I-valve evimbela ukuqhuma: Uma ibhethri likhulu kakhulu ngenxa yokungajwayelekile, i-valve yokuvimbela ukuqhuma ikhubazekile, ezofakwa ngaphakathi kwebhethri ukuze ixhunywe, yeka ukushaja.

I-3) I-Electronics: Amaphakethe webhethri angu-2 ~ 4 angahlobisa i-electronic circuit design i-lithium ion umvikeli, avimbele ukukhokhiswa ngokweqile nokukhipha ngokweqile, avimbele izingozi zokuphepha, andise impilo yebhethri. Yiqiniso, lezi zindlela zokulawula zangaphandle zinomphumela othile, kodwa lezi zixhobo ezengeziwe zengeze izindleko eziyinkimbinkimbi nokukhiqiza kwebhethri, futhi azikwazi ukuxazulula ngokuphelele inkinga yokuphepha kwebhethri. Ngakho-ke, kuyadingeka ukusungula indlela yokuvikela ukuphepha engaphakathi.

2.2 Ukuthuthukisa i-electrolyte electrolyte njengebhethri ye-lithium ion, imvelo ye-electrolyte inquma ngokuqondile ukusebenza kwebhethri, umthamo webhethri, izinga lokushisa elisebenzayo, ukusebenza komjikelezo kanye nokusebenza kokuphepha kubalulekile. Okwamanje, commercial lithium-ion battery electrolytic solution izinhlelo, ukwakheka esetshenziswa kabanzi LIPF6, vinyl carbonate futhi linear carbonate.

Ingaphambili liyisithako esibalulekile, futhi ukusetshenziswa kwazo kunemikhawulo ethile mayelana nokusebenza kwebhethri. Ngesikhathi esifanayo, inani elikhulu lokubilisa okuphansi, indawo ephansi ye-flash ye-carbonate solvent isetshenziswa ku-electrolyte, ezoba emazingeni okushisa aphansi. I-Flash, kunengozi enkulu yokuphepha.

Ngakho-ke, abacwaningi abaningi bazama ukuthuthukisa uhlelo lwe-electrolyte ukuthuthukisa ukusebenza kokuphepha kwama-electrolyte. Esimeni lapho impahla eyinhloko yebhethri (okuhlanganisa impahla ye-electrode, impahla ye-diaphragm, impahla ye-electrolyte) ingashintshi ngesikhathi esifushane, ukuzinza kwe-electrolyte kuyindlela ebalulekile yokuthuthukisa ukuphepha kwamabhethri e-lithium ion. 2.

2.1 Izithasiselo zokusebenza ezifakiwe zinemithamo emincane, isici esiqondiwe. Okusho ukuthi, ingathuthukisa kakhulu ukusebenza kwebhethri okuthile okungamakhroscopic ngaphandle kokushintsha inqubo yokukhiqiza ngaphandle kokushintsha noma kungabikho izindleko zebhethri ezintsha.

Ngakho-ke, izithasiselo zokusebenza seziphenduke indawo eshisayo ebhethri ye-lithium-ion yanamuhla, okungenye yezindlela ezithembisayo okwamanje okuyisixazululo esithembisa kakhulu se-pathogenic se-lithium-ion battery electrolyte. Ukusetshenziswa okuyisisekelo kwesithasiselo ukuvimbela izinga lokushisa lebhethri ukuthi lingabi phezulu kakhulu futhi amandla omthamo webhethri akhawulelwe ebangeni lokulawula. Ngakho-ke, ukuklanywa kwesengezo nakho kucatshangelwa ngokombono wezinga lokushisa kanye namandla okushaja.

Isengezo se-flame retardant: Isengezo se-flame retardant singaphinda sihlukaniswe izithasiselo ze-organic phosphorus flame retardant, isithasiselo esine-nitrogen esiyingxube se-flame retardant, isithako esine-silicon-based retardant, kanye nesengezo esiyinhlanganisela esingabusheki ilangabi. 5 izigaba ezibalulekile. I-Organic phosphorescell-flame retardant: Okubalulekile kufaka phakathi i-alkyl phosphate, i-alkyl phosphite, i-fluorinated phosphate, kanye ne-phosphate nitrile compounds.

Indlela yokubuyisela amalangabi ibalulekile ekuphenduleni kweketango lama-molecule abushela ilangabi aphazamisa ama-radicals mahhala e-hydrogen, abuye aziwe ngokuthi umshini wokuthwebula ama-radical wamahhala. Ukubola kwe-gasification okungeziwe kukhipha ama-free radicals aqukethe i-phosphorus, ikhono lama-free radicals ukuqeda ukusabela kweketango. I-Phosphate flame retardant: I-phosphate ebalulekile, i-triethyl phosphate (TEP), i-tributyl phosphate (TBP), njll.

I-Phosphate nitrile compound efana ne-hexamethyl phosphazene (HMPN), i-alkyl phosphite efana ne-trimethyl phosphite (TMPI), ezintathu - (2,2,2-trifluoroethyl), i-phosphite (TT- FP), i-fluorinated acid ester, njenge-three-(2,2,2-trifluoroethyl), i-methyl-trifluoroethyl) i-diethyl-2, i-fluoroethyl, i-2, i-fluoroethyl) i-phosphate (BMP), (2,2,2-trifluoroethyl) - i-diethyl phosphate (TDP), i-phenylphosphate (DPOF), njll. iyisengezo esihle se-flame retardant. I-phosphate ivamise ukuba ne-viscosity enkulu uma kuqhathaniswa, ukungaqini kahle kwe-electrochemical, futhi ukungezwa kwe-flame retardant nakho kuba nomthelela ongemuhle ekuphatheni kwe-ionic ye-electrolyte kanye nokuhlehla kokujikeleza kwe-electrolyte kuyilapho kukhulisa ukugqama kwe-electrolyte.

Ngokuvamile kuba: 1 okuqukethwe kwekhabhoni yamaqembu amasha e-alkyl; Iqembu eli-2 elinuka kamnandi (phenyl) le-alkyl elifakwe esikhundleni seqembu; 3 yakha i-cyclic structure phosphate. I-organic halogenated material (i-halogenated solvent): I-organic halogenic flame retardant ibalulekile kumkhuhlane womkhuhlane. Ngemuva kokuthi i-H ishintshwe ngu-F, izakhiwo zayo ezibonakalayo zishintshile, njengokuncipha kwendawo yokuncibilika, ukwehla kwe-viscosity, ukuthuthukiswa kokuzinza kwamakhemikhali kanye ne-electrochemical, njll.

I-organic halogenic flame retardant ibalulekile ukufaka i-fluorocyclic carbonates, i-fluoro-chain carbonates ne-alkyl-perfluorodecane ether, njll. I-OHMI nezinye izinhlanganisela ze-fluororethyl ether eziqhathanisayo, izinhlanganisela ze-fluoride ezine-fluoride zibonise ukuthi ukungezwa kwe-33.3% (ingxenye yevolumu) 0.

I-67 mol / lliclo4 / Ec + DEC + PC (isilinganiso sevolumu 1: 1: 1) i-electrolyte inephuzu eliphakeme kakhulu le-flash, amandla okunciphisa aphakeme kune-organic solvent EC, DEC kanye ne-PC, engakha ngokushesha ifilimu ye-SEI ebusweni be-graphite yemvelo, ithuthukise ukushaja kokuqala kanye nokukhishwa komthamo we-Cullen kanye nokukhipha amandla. I-fluoride ngokwayo ayinakho ukusetshenziswa komsebenzi wokuthunjwa wamahhala we-radical retardant echazwe ngenhla, kuphela ukuhlambulula ama-co-solvents aphezulu aguquguqukayo futhi avuthayo, ngakho-ke kuphela isilinganiso sevolumu ku-electrolyte ikakhulukazi (70%) Uma i-electrolyte ingashi. I-Composite flame retardant: I-composite flame retardant okwamanje esetshenziswa ku-electrolyte ine-PF compound kanye ne-NP-class compound, izinto ezimele zine-hexamethylphosphoride ebalulekile (HMPA), i-fluorophosphate, njll.

I-flame retardant yenza i-flame retardant ngokusebenzisa i-synergistic yezinto ezimbili ezibushela ilangabi. FEI et al. Iphakamisa ama-NP flame retardants amabili i-MEEP ne-MEE, futhi ifomula yawo yamangqamuzana iboniswa kuMfanekiso 1.

I-Licf3SO3 / MeEP :PC = 25:75, i-electrolyte inganciphisa ukuvutha kwe-90%, futhi i-conductivity ingafinyelela ku-2.5 × 10-3S / cm. 2) Isengezo sokushajwa ngokweqile: Uchungechunge lokusabela lwenzeka lapho ibhethri ye-lithium-ion ishajwa ngokweqile.

Ingxenye ye-electrolyte (okubalulekile i-solvent) i-inveraffling ebusweni bokusabela kokubola kwe-oxidative ebusweni be-electrode eqondile, igesi iyakhiqizwa futhi inani lokushisa liyakhululwa, okuholela ekwenyukeni kokucindezela kwangaphakathi kwebhethri nokukhuphuka kwezinga lokushisa, futhi ukuphepha kwebhethri kuthinteka kakhulu. Kusukela kumishini yenhloso, isengezo sokuvikela i-overchaul sibalulekile ohlotsheni lwamandla okukhipha i-oxidative kanye nezinhlobo ezimbili zohlobo lwe-polymerization kagesi. Kusukela ohlotsheni lwe-additive, ingahlukaniswa ibe yi-lithium halide, i-metallocene compound.

Njengamanje, i-adaprase eyengeziwe eyengeziwe eyengeziwe (i-BP) ne-cyclohexylbenzene (CHB) ezithasiselweni ze-redox anti-overchard kuwumgomo lapho i-voltage yokushaja idlula i-voltage evamile yokusika, isithasiselo siqala ku-electrode ephozithivu. Ukusabela kwe-oxidation, umkhiqizo we-oxidation usakazeka ku-electrode engalungile, futhi ukusabela kokunciphisa kwenzeka. I-oxidation ivaliwe phakathi kwezigxobo ezinhle nezimbi, idonsa ukushaja ngokweqile.

Izinto ezimele yona zine-ferrocene nokuphuma kwayo, i-ferrid 2,2-pyridine kanye nenkimbinkimbi ye-glenoline engu-1,10 eseduze, i-thiol derivative. I-Polymerization block anti-filled addititive. Izinto ezimele zihlanganisa i-cyclohexylbenzene, i-biphenyl nezinye izinto.

Uma i-biphenyl isetshenziswa njengesengezo esishajwe ngaphambili, lapho amandla ogesi afinyelela ku-4.5 kuya ku-4.7V, i-biphenyl eyengeziwe yenziwa i-electrochemically polymerized, yakhe ungqimba lwefilimu eqhubayo ebusweni be-electrode ephozithivu, okwandisa ukumelana kwangaphakathi kwebhethri, ngaleyo ndlela kukhawulelwe ibhethri elivikelayo elishajayo.

2.2.2 I-ion liquid ion liquid electrolyte yenziwe ngokuphelele yi-yin kanye ne-cation.

Njengoba ama-interi ion noma imiqulu ye-cationic ibuthakathaka, ephakathi ibuthakathaka, ukusatshalaliswa kwe-electron akulingani, futhi i-oan-censoon ingaba mahhala ukuhamba ekamelweni lokushisa, eliwuketshezi. Ingahlukaniswa ibe imidazole, pyrazole, pyridine, quaternary ammonium usawoti, njll. Uma kuqhathaniswa ne-solvent evamile yamabhethri e-lithium ion, uketshezi lwe-ionic lunezinzuzo ezi-5: 1 ukuzinza okuphezulu kokushisa, i-200 ° C ayikwazi ukubola; I-2 vapor pressure icishe ibe ngu-0, akudingeki ukhathazeke ngebhethri; 3 uketshezi lwe-ionic akulula ukuvutha Akukho ukugqwala; I-4 ine-conductivity ephezulu kagesi; 5 Ukuzinza kwamakhemikhali noma kwe-electrochemical kuhle.

I-AN noma okufanayo yakha i-PP13TFSI kanye ne-1Mollipf6ec/Dec (1: 1) ibe yi-electrolyte, engafinyelela imiphumela engeyona eyephethiloli ngokuphelele, futhi yengeze okungeziwe okungu-2 wt% kwe-liboB kulolu hlelo ukuze kuthuthukiswe kakhulu ukuhambisana kwesixhumi esibonakalayo. Inkinga kuphela edinga ukuxazululwa yi-conductivity ye-ion ohlelweni lwe-electrolyte. 2.

2.3 Ukukhetha ukuzinza okushisayo kwe-lithium salt hexafluorophosphate (LiPF6) usawoti we-electrolyte we-lithium osetshenziswa kakhulu ebhethrini lempahla ye-lithium-ion. Nakuba imvelo yayo eyodwa ingekho kahle, ukusebenza kwayo kukonke yikhona okuzuzisa kakhulu.

Kodwa-ke, i-LiPF6 nayo inobubi bayo, isibonelo, i-LiPF6 iyikhemikhali futhi ayizinzile ngokwe-thermodynamically, futhi ukusabela kwenzeka: LIPF (6S) → LIF (S) + PF (5G), ukusabela okukhiqizwa i-PF5 kulula ukuhlasela i-organic solvent ku-athomu ye-oxygen Lonely kuma-electron, okuholela ekuvulekeni kwe-loop polymerization ye-polymerization ephezulu kanye ne-ether ephezulu. Ucwaningo lwamanje mayelana nokushisa okuphezulu kukasawoti we-electrolyte lugxile emasimini kasawoti we-lithium we-organic. Izinto ezimele zibalulekile ngosawoti we-boron-based, usawoti we-lithium osekelwe ku-imine.

I-LIB (C2O4) 2 (liboB) iwusawoti we-electrolyte osanda kuhlanganiswa eminyakeni yamuva nje. Inezici eziningi ezinhle kakhulu, amazinga okushisa abolayo angu-302 ° C, angakha ifilimu ye-SEI ezinzile ku-electrode engalungile. Thuthukisa ukusebenza kwe-graphite kusisombululo se-electrolytic esisekelwe kwi-PC, kodwa i-viscosity yayo inkulu, ukuvinjelwa kwefilimu ye-SEI kwakhiwa [14].

Izinga lokushisa lokubola le-LIN (SO2CF3) 2 (Litfsi) lingu-360 ° C, futhi ukuqhutshwa kwe-ion ekushiseni okuvamile kungaphansi kancane kune-LiPF6. Ukuzinza kwe-electrochemical kuhle, futhi amandla e-oxidation angaba ngu-5.0V, okuwusawoti we-lithium ophilayo kakhulu, kodwa ukugqwala Okubi kwe-Al base set fluid.

2.2.4 I-Polymer Electrolyte Amabhethri amaningi e-lithium ion ezimpahla asebenzisa izinyibilikisi ze-carbonate ezivutha umlilo, uma ukuvuza kungase kubangele umlilo.

Lokhu ikakhulukazi ibhethri ye-lithium-ion enamandla yomthamo omkhulu, ukuminyana kwamandla aphezulu. Esikhundleni sokusebenzisa ama-electrolyte e-polymer angathembekile esikhundleni sama-electrolyte angama-organic liquid avuthayo, ingathuthukisa kakhulu ukuphepha kwamabhethri e-lithium-ion. Ucwaningo lwe-polymer electrolyte, ikakhulukazi i-gel-type polymer electrolyte luthuthuke kakhulu.

Njengamanje, isetshenziswe ngempumelelo kumabhethri e-lithium-ion ezentengiselwano. Ngokwesigaba somzimba we-polymer, i-gel polymer electrolyte ibalulekile ngezigaba ezintathu ezilandelayo: i-PAN-based polymer electrolyte, i-PMMA polymer electrolyte, i-PVDF-based polymer electrolyte. Kodwa-ke, i-electrolyte ye-polymer yohlobo lwejeli empeleni iwumphumela wokuthotshiswa kwe-polymer electrolyte eyomile kanye ne-electrolyte ewuketshezi, futhi amabhethri e-polymer yohlobo lwe-gel asenomsebenzi omningi okufanele awenze.

I-2.3 Impahla enhle inganquma ukuthi izinto ezibonakalayo ze-electrode azinzile lapho i-voltage yesimo sokushaja ingaphezu kwe-4V, futhi kulula ukukhiqiza ukushisa okuncibilikisiwe emazingeni okushisa aphezulu ukubola umoya-mpilo, umoya-mpilo kanye nezinyibilikisi eziphilayo ziqhubeka nokusabela inani elikhulu lokushisa namanye amagesi, ukunciphisa ukuphepha kwebhethri [2, 17-19]. Ngakho-ke, ukusabela kwe-electrode enhle kanye ne-electrolyte kubhekwa njengesizathu esibalulekile sokushisa.

Mayelana impahla evamile, ngcono indlela evamile yokuphepha yayo enamathela ukuguqulwa. Ukuze kuhlanganiswe indawo engaphezulu ye-electrode esebenzayo ene-MgO, A12O3, SiO2, TiO2, ZnO, SnO2, ZrO2, njll., kunganciphisa ukusabela kwe-Die +-rear positive kanye ne-electrolyte kuyilapho kunciphisa i-chromatography ye-electrode ephozithivu, ivimbela ukuguqulwa kwesigaba sento ye-electrode enhle.

Thuthukisa ukuqina kwayo kwesakhiwo, wehlise ukumelana kokuphazamiseka kwe-cation ku-lattice, ngaleyo ndlela unciphise ukusabela kwesibili kwenqubo yokujikeleza. 2.4 Izinto zekhabhoni okwamanje zisebenzisa indawo engaphezulu ethize ephansi, inkundla yokushaja ephakeme kanye neplathifomu yokukhipha amanzi, inkundla yokushaja encane kanye nokukhipha amanzi, ukusimama okushisayo okuphakeme uma kuqhathaniswa, isimo esihle sokushisa uma kuqhathaniswa, i-thermostability ephezulu uma kuqhathaniswa, i-thermostability ephezulu uma kuqhathaniswa, i-thermostability ephezulu uma kuqhathaniswa.

Okufana ne-intermediate phase carbon microspheres (MCMB), noma i-Li9Ti5o12 yesakhiwo se-spinel, esingcono kunokuqina kwesakhiwo se-laminated graphite [20]. Indlela okwamanje yokuthuthukisa ukusebenza kwe-carbon material ibalulekile ekwelapheni okungaphezulu (i-surface oxidation, i-surface halogenation, i-carbon cladding, i-coating metal, i-metal oxide, i-polymer coating) noma ukwethula i-doping yensimbi noma engeyona eyensimbi. 2.

5 I-diaphragm esetshenziswa njengamanje kumabhethri e-lithium-ion ezentengiso iseyinto ye-polyolefin, futhi ukonakala kwayo okubalulekile kuyashisa futhi ukungena koketshezi lwe-electrolytic kubi. Ukuze unqobe lezi ziphambeko, abacwaningi baye bazama izindlela eziningi, ezifana nokubheka izinto zokuzinza ezishisayo, noma wengeze inani elincane le-Al2O3 noma i-SiO2 nanopowdia, engenawo nje kuphela i-diaphragm evamile, kodwa futhi ine-thermal stability yezinto ezibonakalayo ze-electrode. sebenzisa.

I-MIAO et al, ukwenziwa kwe-polyimide nano nonwoven okulungiselelwe indlela yokuphotha ye-electrostatic. I-DR ne-TGA-like characterization isho ukuthi ayikwazi ukugcina ukuzinza kokushisa ku-500 ° C kuphela, kodwa futhi ibe nokungena okungcono kwe-electrolyte okuhlobene ne-diaphragm ye-CELGARD. I-WANG et al ilungiselele i-AL2O3-PVDF i-nanoscopic microporous membrane, ebonisa izakhiwo ezinhle ze-electrochemical nokuzinza okushisayo, okwanelisa ukusetshenziswa kwezihlukanisi zebhethri ze-lithium-ion.

3 Isifinyezo futhi sibheke phambili amabhethri e-lithium-ion wezimoto zikagesi kanye nokugcinwa kwamandla, okukhulu kakhulu kunemishini encane ye-elekthronikhi, futhi indawo yokusetshenziswa iyinkimbinkimbi kakhulu. Kafushane, siyabona ukuthi ukuphepha kwayo kusekude nokuxazululwa, futhi sekube yibhodlela lamanje lobuchwepheshe. Umsebenzi olandelayo kufanele ujule kumthelela oshisayo ibhethri elingase liwubangele ngemva kokusebenza okungavamile, futhi uthole indlela ephumelelayo yokuthuthukisa ukusebenza kokuphepha kwebhethri ye-lithium ion.

Njengamanje, ukusetshenziswa kwe-solvent equkethe i-fluorine kanye nezithasiselo ze-flame retardant kuyisiqondiso esibalulekile sokwakhiwa kwebhethri ye-lithium-ion yohlobo lokuphepha. Indlela yokulinganisa ukusebenza kwe-electrochemical nokuphepha kwezinga lokushisa eliphezulu kuzoba ukugxila kocwaningo lwesikhathi esizayo. Isibonelo, isethi ehlanganisiwe ehlanganisiwe ye-composite ye-flame retardant ehlanganisiwe engu-P, N, F, ne-CL ithuthukiswa, futhi i-solvent ephilayo enephuzu lokubilisa eliphezulu, i-flash point ithuthukiswa, futhi isisombululo se-electrolytic sokusebenza kokuphepha okuphezulu siyakhiqizwa.

Izinqamuleli zomlilo eziyinhlanganisela, izithasiselo zokusebenza ezimbili nazo zizoba amathrendi entuthuko yesikhathi esizayo. Mayelana ne-lithium ion battery electrode material, izakhiwo zamakhemikhali ezingaphezulu zezinto zihlukile, izinga lokuzwela kwezinto ze-electrode ekushajweni nasekukhipheni amandla akuhambisani, futhi akunakwenzeka ukusebenzisa i-electrode / electrolyte / izithasiselo ezimbalwa eziningana kuwo wonke umklamo wesakhiwo sebhethri. Ngakho-ke, esikhathini esizayo, kufanele sigxile ekuthuthukiseni amasistimu ebhethri ahlukene wezinto ezithile ze-electrode.

Ngesikhathi esifanayo, iphinde ithuthukise uhlelo lwebhethri ye-lithium-ion ye-polymer ngokuvikeleka okuphezulu noma ukuthuthukiswa kwe-electrolyte eqinile ye-inorganic ene-cation conductive eyodwa kanye nokuhamba kwe-ion esheshayo kanye ne-thermostability ephezulu. Ngaphezu kwalokho, ukwenza ngcono ukusebenza kwe-ionic liquid, ukuthuthukisa amasistimu okwenziwa alula futhi ashibhile nakho kuyingxenye ebalulekile yocwaningo lwangomuso.