Pfupiso ye lithium bhatiri lithium

2022/04/08

Munyori: Iflowpower -Inotakurika Power Station Mutengesi

Kuti vagadzirise dambudziko iri, vanhu vakadzidza pre-lithiance tekinoroji. Nekutanga-lithiuming iyo electrode zvinhu, iyo isingadzokerike lithium kurasikirwa kunokonzerwa nekuumbwa kweiyo SEI firimu inodzimwa kuvandudza huwandu hwese uye simba density yebhatiri. I.

Negative polar lithium tekinoroji yakajairika pre-lithiuming nzira isiriyo lithium, senge lithium foil, lithium poda yekuwedzera, nezvimwewo, ndeye pre-development pre-development. Mukuwedzera, kune nzira ye pre-lithiating uchishandisa silicided lithium powder uye electrolytic lithium saline solution.

1 lithium foil lithium lithium foil muripo inzira yekushandisa iyo yekuzviburitsa. Iko kukwanisa kwesimbi lithium ndiyo yakaderera muzvinhu zvose zve electrode, uye kana iyo electrode zvinhu zvasangana nesimbi lithium foil, erekitironi inotamirwa kune iyo yakaipa electrode, inoperekedzwa naLi + mumagetsi asina kunaka. Wedzera mhinduro ye electrolytic pasilicon nanowire negative electrode inokura pastainless simbi substrate, wobva wasangana zvakananga ne lithium metal foil.

Iyo yakaipa electrode bvunzo mushure mekuyedzwa kwelithium, uye inowanikwa kuti yakavhurika yedunhu voltage isina lithium ndeye 1.55V, pa0.01 kusvika 1.

00V yekutanga 0.1c yakaburitsa lithium-chaiyo simba re3800mAh / g; iyo silicon nanowire mushure mekusimudza Iyo voltage ndeye 0.25V, yekutanga rusenzi bit ndeye 1600mAh / g.

Iyo tin carbon negative electrode inosangana zvakananga ne lithium foil iyo inopinzwa ne electrolyte fluid. Kuedzwa nehafu-bhatiri, iyo isingadzokeri yekuenzanisa kugona kwetin kabhoni mushure me lithiamu yakaderedzwa kubva pa680 mAh / g kusvika 65mAh / g. Iyo yakaipa electrode inoumba bhatiri rose, uye iyo ICE yakaedzwa pa3.

1 kusvika 4.8V iri pedyo ne100% pa 3.1 kusvika 4.

8V, uye kutenderera kwakagadzikana, uye kuita kwekukudza kuri nani. Kunyangwe iyo yakanangana neiyo lithium foil, iyo yakaipa electrode pre-lithiuming inogona kuwanikwa, asi dhigirii rekutanga-lithiuming haisi nyore kunyatso kudzora. Lithiation isina kukwana, hazvibviri kuvandudza ICE; uye lithiamu yapera, inogona kuumba simbi lithium coating pamusoro peiyo yakaipa electrode.

Z.Y.CAO et al yekuvandudza kuchengetedzeka kwelithium foil tonics, dhizaini yezvinhu zvinoshanda / polymer / lithium simbi matatu-layer chimiro negative electrode inogona kudzikamiswa mumhepo yakadzika, yakaringana isina kunaka pakugadzirisa.

Iwo matatu-layer chimiro ndeichi: iyo lithium layer yakaputirwa nepolymethyl methacrylate inodzivirira layer uye inoshingaira zvinhu layer pane lithium layer ne electrochemically deposited metal lithium layer pane copper foil. 2 Yakadzikama lithium simbi poda (SLMP) lithium poda yekuwedzera inokurudzirwa naFumei, kusimudzira kweSLMP kwakakwira kusvika 3600mAh / g, uye nzvimbo yakafukidzwa ne2% kusvika 5% lithium carbonate, inogona kunge iri munzvimbo yakaoma. use.

Kushandisa SLMP kune negative electrode pre-lithiating, pane nzira mbiri: kuwedzera, kana kuwedzera zvakananga kune yakashata pamusoro pepamusoro. Conventional negative propries, shandisa PVDF / NMP kana SBR + CMC / deionized water systems, asi SLMP haienderani ne polar solvents, chete non-polar solvents akadai hexane, toluene, saka haigoni kubatanidzwa mune yakajairika Direct kuwedzera panguva pulp. Iine SBR-PVDF / toluene system, SLMP inogona kusanganiswa yakananga mugraphite electrode slurry.

Mushure meSLMP's pre-lithium, pa0.01 kusvika 1.00 V, 0.

05c, ICE yebhatiri yakawedzera kubva pa90.6% kusvika 96.2%.

SLMP yakarongedzerwa zvakananga munzvimbo yakaoma isina kunaka iri nyore pane iyo yekuomesa. Iyo silicon-carbon nanotube negative electrode inoshandiswa kune pre-lithium-carbon nanotube negative electrode, uye chikamu chikuru i3% SlMP / toluene mhinduro inodonha pamusoro pesilicon-carbon nanotube, mushure metoluene solvent, piritsi, riite. Mushure mekutanga-lithiuming, simba rekutanga risingadzoreki re electrode yakaipa inoderedzwa ne20% kusvika 40%.

3 silicided lithium poda nano silicon poda saizi idiki, inonyanya kukonzeresa kupararira mune yakaipa. Mukuwedzera, iri munharaunda yakawedzerwa, uye kuchinja kwevhoriyamu mukutenderera hakuzokanganisa chimiro che electrode yose. Parizvino, pane tsvakiridzo shoma pane silicided lithium poda yekuwedzera, chete J.

ZHAO, etc. Iyo semi-battery system inochajwa ne0.01 kusvika 1.

00 V pa0.01 kusvika ku1.00V, uye mushure mekuwedzera 15% silicide powder, ICE yesilicon negative electrode inowedzera kubva ku76% kusvika ku94%; wedzera 9% silicided lithium powder intermediate carbon microspheres kubva 75% Wedzera kusvika 99%; wedzera 7% silicided lithium powder graphite negative ICE yakawedzera kubva pa87% kusvika 99%.

4 Electrolytic lithium saline solution kugadzira lithium, ingave kushandisa lithium foil, SLMP kana silicided lithium powder kutsigira lithium,. High metal lithium ine mitengo yakakwirira, basa rakakwirira, kushanda kwakaoma, kuchengetedza uye kutakura kunoda mari yakakwirira yekudzivirira. Kana iyo lithium process isingabatanidzi simbi lithium, mari yekuchengetedza, kuvandudza mashandiro ekuchengetedza.

Siricon inogona kuitwa neelectrolytic Li2SO4 aqueous solution musero re electrolytic, uye electrode yechibairo inonyudzwa muwaya yemhangura muLi2SO4, uye iyo lithium reaction inoratidzwa muformula (1): Chechipiri, yakajairika makakatanwa positive tonifying technique is A small amount of high-capacity material inowedzerwa panguva yakanaka electrode seductive process. Munguva yekuchaja, Li + inovharirwa kubva kune yakakwirira-yekugona zvinhu, ichiwedzera isingadzoreki kurasikirwa kwesimba kwekutanga kuchaja uye kuburitsa. Parizvino, zvinhu seyakanaka electrode lithium additive inonyanya: lithium compound, nanocomposite uye binary lithium compound inobva pakutendeuka kwekuita, nezvimwewo.

1 lithium compound inoshandisa lithium material Li1 + XNi0.5Mn1.5O4 kubhadhara kusingadzoreki kwekurasikirwa kwesimba kweSi-C | lini0.

5Mn1.5O4 izere bhatiri. Bhatiri rine musanganiswa wakanaka electrode i75% pachiyero chekuchengeta che0.

33c pa3.00 kusvika 4.78V, nepo bhatiri richishandisa pure lini0.

5 mn1.5O4 yakanaka electrode inongova 51%. Li2NiO2 inogonawo kushandiswa seyakanaka yekuwedzera lithium additive, asi kugadzikana mumhepo kwakashata.

Aluminium aluminium inogona kushandiswa kugadzirisa Li2NiO2, yakagadzira Li2NiO2 zvinhu zvakaputirwa mumhepo, uye iyo lithium-lithium mhedzisiro yakanaka. 2 Nanocomposites yakavakirwa pakuchinja maitiro Kunyange zvazvo lithium compound yakawana imwe mhedzisiro se lithium-lithium additive, yekutanga lithium effect ichiri yakaganhurwa kune yakaderera chaiyo kugona. Kubva pane nanocomposite yekutendeuka kwekushandura, yakawanda ye lithiamu inogona kugoverwa panguva yekutanga yekuchaja yebhatiri panguva yebhatiri, uye iyo lithium reaction haigone kuitika panguva yekubuda.

Y.m. SUN et al.

Akadzidza M / Lithium oxide, M / fluorine, M / vulcanized (M = Co, Ni uye Fe) seyakanaka electrode lithium additive. Kuburikidza neyakagadzirwa nano-Co / lithium oxide composite zvinhu pa50 mA / g ye4.1 ~ 2.

5V kutenderera, yekutanga kuchaja ndeye 619mAh / g, iyo yekuburitsa reshiyo inongova 10mAh / g; mushure mekufumura 8h mumhepo yakadzika, bvisa Lithium inongova 51mAh / g isingasviki pane iyo yekutanga kukosha, uye mushure me2D, iyo dehydric ratio ichiri 418mAh / g, ine yakanaka kugadzikana kwezvakatipoteredza, inogona kuenderana nekugadzirwa kwemaitiro. yemabhatiri ekutengesa. Lithium fluorinated lithium lithium yemukati yakakwira, yakanaka kugadzikana, inogona kuita yakanaka tonic lithium zvinhu. Iine iyo m / LIF nanomaterials yakagadziridzwa neshanduko yekuchinja, inogona kukunda dambudziko reLIF conductivity uye yakaderera ionic nhungamiro, yakakwira electrochemical decomposition inogona, uye inokuvadza pakuora zvigadzirwa sekuti lithium fluoride ndeyepamusoro yakanaka electrode resolution yekuwedzera.

Iyo theoretical kugona kwe lithium sulfide inosvika 1166 mAh / g, asi se lithium-lithium additive, kuchine matambudziko mazhinji anoda kugadziriswa, sekuenderana, kuvharisa, kugadzikana kwezvakatipoteredza, nezvimwewo. , iyo nanocomposites yakavakirwa pakuchinja maitiro inosara isina basa resimbi oxides, fluorides, uye sulfides, nezvimwewo, inoderedza kuwanda kwesimba rebhatiri.

3 bhinary lithium compound binary lithium compound theory yakakura kudarika simba. Iyo theoretical chaiyo kugona kweLi2O2, Li2O uye Li3N inosvika 1168mAh / g, 1797mAh / g uye 2309mAh / g, zvichiteerana, uye zvishoma chete kuwedzera kwekuwedzera kunodiwa, yakafanana neiyo lithium athari inogona kuwanikwa. Muchirevo, zvakasara zvezvinhu izvi mushure me lithium ndeye O2, N2, nezvimwe.

, inogona kugadzira gasi rinobudiswa panguva yeSEI firimu mubhatiri. Iyo Li3N yekutengesa inogayiwa kuita hupfu ine particle size ye 1 kusvika 5 μm, iyo inoshandiswa se lithium additive. Pasi peiyo semi-bhatiri system, 1% uye 2% Li3N yeLiCoO2 electrode yakawedzerwa, uye yekutanga kuchaja reshiyo ye0.

1c pa3.0 kusvika 4.2V yaive 167.

6mAh / g uye 178.4mAh / g, zvichiteerana, uye iyo LiicoO2 yakachena yakakwira ne18.0mAh / G, 28.

7mAh / g. Sanganisa kutengeserana Li2O2 neNCM, kutsiva kurasikirwa kwe lithium panguva yekutanga yekuchaja maitiro e graphite negatives. NCM mune yakasanganiswa electrode inoshanda seyakaviri mhedzisiro yezvinhu zvinoshanda uye zvinokonzeresa.

Kuti zvinyatsogadzirisa kuparara kweLi2O2, 1% bhora rekugaya kwe6 h rakawedzerwa kuNCM yakawanikwa mu electrode yakanaka. Bhatiri rese i2.75 ~ 4.

60V kuchaja uye kuburitsa, 0.3c inogona kudzoserwa pane 165.4mAh / g, kupfuura makumi maviri.

5% yeinki | NCM yakazara bhatiri. Muedzo wakaratidza kuti okisijeni yakabudiswa neLi2O2 inoora inoshandisa Li + shoma mumabhatiri ose, zvichiita kuti kuderedzwa kwakakosha kwebhatiri rose rekuwedzera kweLi2O2, asi mushure mokunge gasi rabudiswa, simba rinogona kudzorerwa. Kuchaja kwekutanga kwebhatiri mune chaiyo yekugadzira maitiro kunoitwa mune yakavhurika sisitimu, uye inoburitswa kuti igadzire SEI firimu uye mamwe emativi maitiro anogadzirwa kusati kwaiswa chisimbiso, kuitira kuti mhedzisiro yeO2 kuburitswa inogona kuderedzwa.

Chechitatu, mhedziso uye tarisiro inoenzanisa nzira mbiri dze lithium-lithium, negative lithium-lithium-lithium reagents (lithium foil, lithium powder, uye silicide lithium lithium powder) ine simba guru, asi kushanda kwakaoma, zvinodiwa zvezvakatipoteredza; kuwedzera lithium mune yakanaka electrode Kugadziridzwa kwakanaka kwekuwedzera kwakakwirira mukugadzikana kwakachengeteka, uye ine kuenderana kwakanaka neiyo iripo yekugadzira bhatiri tekinoroji. Tsvagiridzo yeramangwana isina kunaka lithium-lithium tekinoroji inofanirwa kutarisa kugadzikana, kusimudzira uye kugadzirwa kwemaindasitiri kwebhatiri, uye nyore hunyanzvi mhinduro, uye mubatsiri wakanaka unofanirwa kutarisisa kukudziridzwa kwepamusoro yeropa lithium kugona, kushandiswa kudiki. Additive system ine diki yasara huwandu hwe lithium.

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