Indlela yokulungiselela izinto ezintle ze-electrode lithium iron phosphate

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - პორტატული ელექტროსადგურის მიმწოდებელი

I-lithium iron phosphate ikhona kwimo ye-phosphate lithium ore kwindalo, inokwakheka kwe-olivine ehlelekile. I-lithium phosphate chemical formula ye-molecular is: LIMPO4, apho i-lithium ilungile; intsimbi yeziko lentsimbi lixabiso elihle; iphosphate inegetive-amaxabiso amathathu, edla ngokusetyenziswa njengesixhobo semathiriyeli yebhetri ye-lithium. Ukusetyenziswa kweebhetri ze-lithium iron phosphate zezi: izixhobo zokugcina amandla, izixhobo zombane, izithuthi zombane ezikhanyayo, izithuthi zombane ezinkulu, izixhobo ezincinci kunye namandla ahambayo, kuquka i-lithium iron phosphate kunye ne-akhawunti entsha yezithuthi zombane ze-45% yexabiso elipheleleyo le-phosphite.

Okwesibini, i-lithium iron phosphate njengezinto ze-lithium electrode xa kuthelekiswa nezinye izinto ezintle zebhetri ze-lithium, isakhiwo se-olivine sikhuselekile ngakumbi, sinobuhlobo bendalo, singabizi, ixesha elide, ukusebenza kobushushu obuphezulu, njl. Ukusebenza kokhuseleko kuyisitshixo esiqinileyo se-PO kwiikristale ze-phosphate ephezulu, kunzima ukubola, kwaye ayiyi kuchithwa ngokwesakhiwo okanye ivelise i-oxides eqinile ngexesha lokugqithisa kunye nokushisa okuphezulu.

Ubomi obujikelezayo Ubomi bomjikelo webhetri ye-lead-acid bujikeleze amaxesha angama-300, ubomi benkonzo buphakathi kwe-1 kunye ne-1.5 iminyaka. Kwaye inani le-lithium yentsimbi ye-phosphate ibhetri inokufikelela ngaphezu kwe-2,000, ithiyori isebenzise ubomi beminyaka eyi-7-8.

Ubushushu obuphezulu bokusebenza bubushushu bobushushu obuphezulu be-iron-free phosphate thermal peaks ukuya kuthi ga kwi-350 ° C ukuya kuma-500 ° C, ngelixa i-lithium manganate kunye ne-lithium cobaltate imalunga ne-200 ° C kuphela. Ibhetri ye-lithium iron phosphate enobuhlobo ngokusingqongileyo ithathwa njengengaqulathanga isinyithi esinzima kunye neentsimbi ezinqabileyo, ezingenatyhefu, ezingangcolisi, yibhetri eluhlaza ngokupheleleyo. Umrhumo kunye nokukhutshwa kwendlela ye-lithium yensimbi ye-phosphate njengento efanelekileyo ye-electrode iyahluke kwezinye izinto eziqhelekileyo, kwaye ukuhlawulwa kunye nokukhutshwa kwe-electrochemical kubonisa izigaba ezibini ze-lithium iron phosphate, ukuhlawulwa kunye nokukhupha ukusabela oku kulandelayo: ukutshaja ukusabela: Ukukhutshwa kwempendulo: Intlawulo, i-Li + Ukusuka kwi-LifePO4, i-Fe2 + ilahlekelwe i-electron kwi-FE3 +; xa ikhutshwe, i-Li + ifakwe kwi-iron phosphite kwi-LifePo4.

Utshintsho lwe-Li + lwenzeka kwi-Lifepo4 / Fepo4 interface, ngoko i-curve yentlawulo kunye nokukhupha i-curve ilula kakhulu, ikhono libuye lizinzile, lilungele izinto ze-electrode. Okwesithathu, ukulungiswa kwe-lithium iron phosphate ukulungiselela izithako kunye ne-lithium iron phosphate. Omnye umthombo oqhelekileyo we-lithium, umthombo wesinyithi, umthombo wekhabhoni, kunye nomthombo we-phosphorus zimi ngolu hlobo lulandelayo: Ukulungiswa kwe-lithium iron phosphate powder kunokuchaphazela ukusebenza kwayo njengento efanelekileyo.

Zininzi iindlela zokulungiselela i-lithium iron phosphate, efana nobushushu obuphezulu be-solid phase reaction, indlela yokunciphisa i-carbon thermal reduction, kunye ne-unminerated hydrothermal method, i-spray solution ye-thermal, i-sol - gel indlela, indlela ye-precipitation iyonke, njl. 1. Ubushushu obuphezulu besigaba sokusabela indlela yobushushu obuphezulu ubushushu obuqinileyo besigaba sokuphendula indlela kukulungiselela iphosphate yentsimbi yelithium lolona phuhliso luqolileyo lophuhliso lwangoku kunye nendlela esetyenziswa kakhulu.

Emva komthombo wesinyithi, umthombo we-lithium, umthombo we-phosphorus uxutywe kunye nemitha yeekhemikhali kunokuba uxutywe ngokulinganayo, kwindawo engasebenziyo, okokuqala sintered 5 ukuya kwi-10 h kubushushu obuphantsi (300 ~ 350 ° C), ukuze izinto ezikrwada ziqale ukubola, ngoko kubushushu obuphezulu ( 600 ~ 800 ° C) Sintering 10 uhlobo lwe-lithium ye-iron phosphate ~ 20. Ubushushu obuphezulu besigaba sendlela yokudityaniswa kwenkqubo ye-lithium yesinyithi ye-phosphate ilula, iimeko zokulungiselela kulula ukuzilawula, ukusilela kukuba ubungakanani bekristale bukhulu, i-particle diameter ayilula ukuyilawula, ukuhanjiswa akulingani, imilo nayo ayifani, uluhlu lwemveliso luhlwempuzekile. 2.

Indlela yokunciphisa i-Carbonatic thermal reduction indlela yokunciphisa i-carbon thermal kukongeza imithombo yekhabhoni (isitatshi, i-sucrose, njl.) kumxube wezinto ezikrwada, ezidla ngokusetyenziswa kunye nobushushu obuphezulu besigaba esiqinileyo, kunye nomthombo wekhabhoni unokunciphisa i-Fe3 + kwi-calcination ephezulu yokushisa ukuya kwi-Fe2 +, Kuphephe ukusabela ngexesha lokusabela ukuba libe yi-Fe3 +, ukuze inkqubo yokudibanisa i-synthesis ibe yinto efanelekileyo yokulawula ixesha elide, kodwa ixesha elide lokusabela lifanelekileyo. 3.

Ukutshiza isisombululo sobushushu se-pyrolysis yindlela esebenzayo yokufumana ubungakanani bamasuntswana afanayo kunye nemilo eqhelekileyo ye-lithium iron phosphate powder. I-precursor i-inseed ye-reactor ye-450 ukuya kwi-650 ° C kunye ne-carrier carrier, kunye ne-lithium iron phosphate ifunyenwe emva kokusabela kweqondo lokushisa eliphezulu. I-precursor inkungu eyi-spherical spherical spheroid elungiswe yi-spray pyrolysis iphezulu, kwaye ubungakanani bobungakanani bamasuntswana bufana.

Emva kokusabela kwiqondo lokushisa eliphezulu, ipneumophosphate ifumaneka. I-Lithium yentsimbi ye-phosphate sphere inceda ekwandiseni indawo ethile yendawo yesixhobo, ukonyusa umthamo womthamo wezinto eziphathekayo. 4.

Indlela yokufudumeza amanzi yindlela yokwenziwa kwesigaba solwelo, ibhekisa kwindlela yokusabela kweekhemikhali kwinqanawa yoxinzelelo etywiniweyo kwinqanawa yoxinzelelo etywiniweyo, kwaye ithathwa ngamachiza ngezinto eziluhlaza, ihlanjwe ngokuhluzwa, yomiswe emva kokumisa. Ilithium iron phosphate inokufumaneka emva kokuba ubushushu obuphezulu bubaliwe. Ukulungiswa kwe-ferrite kwindlela ye-hydrothermal kunenzuzo yokulawula okulula kwefom ye-crystalline kunye nobukhulu be-particle, i-avareji ye-particle diameter, i-particle encinci ye-particle, inkqubo elula, kodwa idinga ukushisa okuphezulu kunye nezixhobo zoxinzelelo oluphezulu, ixabiso eliphezulu, inkqubo enzima.

Ukongeza kule ndlela ingentla, kukho indlela eqhelekileyo yemvula, indlela ye-sol-gel, indlela yokunciphisa i-oxidative, i-emulsified drying method, kunye ne-microwave sintering method. 4. Isishwankathelo Nangona indlela yokulungiselela i-lithium iron phosphate ingaphezulu kakhulu, ngaphandle kobushushu obuphezulu besigaba sokusabela indlela, uninzi lwenqanaba lophando lwebhubhoratri.

Ngokunzulu okuqhubekayo kokulungiswa kwe-phosphate kunye nokuguqulwa, isantya soshishino lwe-ferrite phosphate sihlala sikhawuleza. Ukuze ufunde inkqubela ye-lithium yentsimbi ye-iron-ion yamva nje yezinto eziphathekayo zebhetri, nceda ubhalisele i-2017 Energy Particle Material Preparation and Testing Technology Seminar ngo-Oktobha 16-17! Ngelo xesha, uNjingalwazi, uNjingalwazi, uHu Guorong, iYunivesithi yaseCentral South, uya kwabelana ngengxelo "yeLithium-Ion yeBattery Positive Code Material Lithium Lithium Lithium Industrialization". USekela Mlawuli weZiko leMetallurgy kunye nokusiNgqongileyo, iYunivesithi yaseCentral South, iSekela Mlawuli weZiko leTekhnoloji, iSebe leBattery ePhambili, iSebe lezobuNjineli, iChina, iChina Chemistry kunye nePhysical Power Association, i-China Lithium Battery Association, iKhomishoni yoBonelelo lwaMazwe ngamazwe, iKomiti yoNxibelelwano lweBattery yeLithium.

Ikakhulu ibandakanyeka kwithiyori ye-electrochemical kunye nokusetyenziswa, izixhobo zamandla kunye neminye imiba, kwaye ifezekise iziphumo eziphuma phambili kuphuhliso kunye noshishino lwe-lithium-ion ibhetri ye-electrode efanelekileyo. Bamba kwaye uthathe inxaxheba kwiiprojekthi zophando zenzululwazi kuzwelonke nakwiphondo-kwinqanaba, kubandakanywa iprojekthi ekhethekileyo yoshishino enkulu yeKhomishoni yoPhuhliso kunye noHlaziyo lweSizwe, enye yeSebe lezeNzululwazi kunye neTekhnoloji yeSizwe ye-863, inoxanduva lweprojekthi yesicwangciso senkxaso yesayensi kunye nobuchwepheshe, iprojekthi yesicwangciso setotshi yesizwe Izinto kunye neeprojekthi ezininzi eziphambili zenzululwazi kunye nezobuchwepheshe kwiPhondo laseHunan. Iziphumo eziphumayo ziye zaphunyezwa kwi-industrialization ye-lithium-ion ibhetri ye-electrode efanelekileyo, kwaye ifezekise ngempumelelo i-lithium cobalt organism, i-lithium manganate kunye ne-lithium iron phosphate.

Malunga ne-2017 Energy Granular Material Preparation and Testing Technology Seminar Le ntlanganiso ijolise ekuboneleleni ngamaqonga onxibelelwano kubaphengululi abafanelekileyo ekhaya nakwamanye amazwe, ekusetyenzisweni kweegranule zamandla, ukomeleza utshintshiselwano ngolwazi lweshishini, ibhetri ye-lithium, i-capacitor, iseli yamafutha , Ukuphumelela kweteknoloji yebhetri yemoto yoMbane yenza igalelo. Umququzeleli: IKomiti ye-China Particle Society Energy Granular Materials, i-China Powdered Network Association Unit: I-Nuremberg Exhibition (Shanghai) Co., Ltd.

Iiyunithi ezixhasiweyo: Kawaguklang (Shanghai) Powder Machinery Co., Ltd., Dandong Baite Instrument Co.

, Ltd. IJiangsu Miyou Powder New Equipment Manufacturing Co., Ltd.

Iyunithi yeNkxaso: I-Ningbo Materials Technology kunye neZiko lobuNjineli, i-Chinese Academy yeSayensi, iZiko lobuNjineli beNkqubo, iYunivesithi yaseTsinghua, iZiko leFiziksi, i-Chinese Academy yeSayensi, i-China Academy yeSayensi i-Dalian Chemical Physics, i-China i-Battery Industry Association, i-China Super Capacitor Industry Alliance, i-Dongguan Yifu Machinery Technology Co., Ltd., iShijiazhuangment Day ye-Shijiazhuang.

, Ltd., Jiangsu Highway Intelligent Equipment Co., Ltd.

, Linyi County Chasing RMB Co., Ltd., Guangzhou Zhonghuo Intelligent Equipment Co.

, Ltd. , Shenzhen Boyi Chemical Machinery Co., Ltd.

, Malvin Instrument Co., Ltd., Xinxiang Yangli Machinery Co.

, Ltd. I-angle yokulungiselela, uhlolisise iingenelo kunye nokungonakali kwezinto ezingundoqo zamandla ezifana neebhetri ze-lithium, iibhetri ze-sodium, i-supercapacitors, iiseli ze-fuel; i-3:, umzekelo, iinqununu zamandla amatsha (njenge-graphene, i-carbon nanotubes, i-ternary lithium electrode, i-sodium ion battery electrodes, i-Metal lithium) iteknoloji kunye nokusetyenziswa kwayo kumashishini okugcina amandla kunye nokuguqulwa; amagqabantshintshi 4: Iimpumelelo zobugcisa zamva nje zeegranule zamandla kunye neenkokeli zeshishini; ibalaselisa ezintlanu: imiboniso kunye neenkomfa, izinto zombane ze-lithium, izixhobo zokuvelisa i-supercapacitor, ukufumanisa iTekhnoloji kunye nesicelo somboniso omnye wokumisa. Gqamisa 6: Ukumiswa kweprojekthi.

Iibhetri ze-lithium zasekhaya, amashishini okuvelisa izinto zombane ze-lithium, inkokeli entsha yeprojekthi, ukubonisana kokubonisana nokuthenga. .