Sebopeho sa betri ea lithium-ion

Ho hlophisoa le ho tsosolosoa ha betri ea lithium-ion

Thebetri ea lithium-ione entsoe ka eletrolyte, separator, cathode le anode le nyeoe.

The electrolyteka betri ea lithium-ion e ka ba gel kapa polymer, kapa motsoako oa gel le polymer.

Electrolyte ka libeteri tsa Li-ion e sebetsa e le mokhoa oa ho tsamaisa li-ion ka betri.Hangata e na le letsoai la lithium le li-solvents tsa organic.Electrolyte e phetha karolo ea bohlokoa ho lipalangoang tsa ion pakeng tsa li-electrode tse ntle le tse mpe tsa betri ea lithium-ion, ho netefatsa hore betri e ka finyella matla a phahameng le matla a matla a matla.Ka kakaretso electrolyte e entsoe ka li-solvents tsa tlhaho tse hloekileng, letsoai la lithium electrolyte le li-additives tse hlokahalang tse kopantsoeng ka hloko ka tekanyo e itseng tlas'a maemo a itseng.

Thepa ea cathodemefuta ea betri ea lithium-ion:

• LiCoO2
• Li2MnO3
• LiFePO4
• NCM
• NCA

 Thepa ea cathode e na le litšenyehelo tse fetang 30% tsa betri eohle.

Anodee na le betri ea lithium-ion

Ebe anode ea betri ea lithium-ion e na le litšenyehelo tse ka bang 5-10 lekholong ea betri eohle.Lisebelisoa tsa anode tse thehiloeng ho carbon ke lisebelisoa tse sebelisoang hangata bakeng sa libeteri tsa lithium-ion.Ha e bapisoa le tšepe e tloaelehileng ea lithium anode, e na le polokeho e phahameng le botsitso.Lisebelisoa tsa anode tse thehiloeng ho carbon haholo li tsoa ho graphite ea tlhaho le ea maiketsetso, carbon fiber le lisebelisoa tse ling.Har'a bona, graphite ke eona ntho e ka sehloohong, e nang le sebaka se phahameng se phahameng sa holimo le motlakase oa motlakase, 'me lisebelisoa tsa carbon le tsona li na le botsitso bo botle ba lik'hemik'hale le ho tsosolosoa hape.Leha ho le joalo, bokhoni ba lisebelisoa tsa electrode tse mpe tsa carbon-based li batla li le tlaase, tse ke keng tsa finyella litlhoko tsa likopo tse ling bakeng sa bokhoni bo phahameng.Ka hona, hajoale ho na le liphuputso tse mabapi le lisebelisoa tse ncha tsa khabone le lisebelisoa tse kopaneng, ka tšepo ea ho ntlafatsa bokhoni le bophelo ba potoloho ea lisebelisoa tsa elektrode tse mpe tse thehiloeng ho carbon.

E ntse e na le lisebelisoa tsa silicon-carbon negtive electrode.Silicon (Si) lintho tse bonahalang: Ha li bapisoa le li-electrode tsa khale tsa carbon negative, li-electrode tse mpe tsa silicon li na le matla a itseng a phahameng le matla a matla.Leha ho le joalo, ka lebaka la sekhahla se seholo sa katoloso ea thepa ea silicon, ho bonolo ho etsa hore molumo oa motlakase o atolosoe, ka hona o khutsufatsa bophelo ba betri.

Ea arolangea betri ea lithium-ion ke karolo ea bohlokoa ea ho netefatsa ts'ebetso ea betri le polokeho.Mosebetsi o ka sehloohong oa karohano ke ho arola li-electrode tse ntle le tse mpe, 'me ka nako e ts'oanang, e ka boela ea theha mocha oa tsamaiso ea ion le ho boloka electrolyte e hlokahalang.Ts'ebetso le likarolo tse amanang le karohano ea betri ea lithium-ion li hlahisoa ka tsela e latelang:

1. Ho tsitsa ha lik'hemik'hale: Diaphragm e lokela ho ba le botsitso bo botle ba lik'hemik'hale, ho hanyetsa kutu ho hotle le ho hanyetsa botsofali tlas'a maemo a organic solvent, 'me e ka boloka ts'ebetso e tsitsitseng tlas'a maemo a thata a kang mocheso o phahameng le mongobo o phahameng.

2. Matla a mechine: Karohano e lokela ho ba le matla a lekaneng a mochine le elasticity ho etsa bonnete ba hore matla a lekaneng a matla le ho apara ho hanyetsa ho thibela tšenyo nakong ea kopano kapa tšebeliso.

3. Ionic conductivity: Tlas'a tsamaiso ea electrolyte ea manyolo, conductivity ea ionic e tlase ho feta ea tsamaiso ea metsi a electrolyte, kahoo karohano e lokela ho ba le litšobotsi tsa ho hanyetsa ho tlaase le ho ba le ionic conductivity e phahameng.Ka nako e ts'oanang, e le ho fokotsa ho hanyetsa, botenya ba karohano bo lokela ho ba bo fokolang ka hohle kamoo ho ka khonehang ho etsa hore sebaka sa electrode se be seholo ka hohle kamoo ho ka khonehang.

4. Ho tsitsisa ha mocheso: Ha lintho tse sa tloaelehang kapa ho hlōleha ho kang ho feta tefiso, overdischarge, le potoloho e khutšoanyane e etsahala nakong ea ts'ebetso ea betri, karohano e tlameha ho ba le botsitso bo botle ba mocheso.Ka mocheso o itseng, diaphragm e lokela ho nolofala kapa e qhibilihe, kahoo e thibele potoloho e ka hare ea betri le ho thibela likotsi tsa polokeho ea betri.

5. Sebopeho sa pore se lekaneng le se laolehang: Sebopeho sa pore le ho roala holim'a sefahleho sa karohano se lokela ho ba le taolo e lekaneng ea ho kolobisa ho netefatsa hore ho na le searohano, kahoo ho ntlafatsa matla le bophelo ba potoloho ea betri.Ka kakaretso, polyethylene flake (PP) le polyethylene flake (PE) microporous diaphragms ke lisebelisoa tse tloaelehileng tsa diaphragm hajoale, 'me theko e batla e le theko e tlaase.Empa ho na le lisebelisoa tse ling tsa ho arola betri ea lithium-ion, tse kang polyester, tse nang le ts'ebetso e ntle, empa theko e batla e phahame.