Ke mekhoa efe eo nka ntlafatsang polokeho ea betri ka eona?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Proveïdor de centrals portàtils

1. Sebelisa electrolyte e sireletsehileng ea lithium battery electrolyte hona joale lithium battery electrolyte e sebelisa carbonate e le solvent, moo carbonate e nang le mela e ka ntlafatsang ho tjhaja le ho ntša matla a betri, empa ntlha ea bona ea flash e tlaase, ka mocheso o tlase E tla khanya, &39;me motsoako oa fluoro hangata o na le ntlha e phahameng kapa ha e na flash, kahoo motsoako oa fluoro o sebelisetsoa ho thibela ho tuka ha motlakase. Litlhapi tsa fluoride tse ithutoang hajoale li kenyelletsa fluoroate le fluoroethyl ether.

Electrolyte e thibelang malakabe ke electrolyte e sebetsang eo mosebetsi o thibelang lelakabe oa li-electrolyte tse joalo hangata o fumanoa ka ho eketsa motsoako o thibelang lelakabe ho electrolyte e tloaelehileng. Electrolyte e thibelang mollo e ntse e rarolla mehato ea moruo le e sebetsang ka ho fetisisa bakeng sa polokeho ea betri ea lithium, haholo-holo ho latela indasteri. Ho sebelisa li-electrolyte tse tiileng, ho e-na le li-electrolyte tsa organic fluid, ka katleho ho ntlafatsa polokeho ea libeteri tsa lithium.

Li-electrolyte tse tiileng li kenyelletsa li-electrolyte tse tiileng tsa polymer le li-electrolyte tse tiileng tsa inorganic. Electrolyte ea polymer, haholo-holo gel-mofuta oa polymer electrolyte, e entsoe haholo ka betri ea lithium ea khoebo, empa electrolyte ea mofuta oa gel e hlile e le electrolyte ea polymer ea boemo bo omeletseng le electrolyte compromise ea metsi. Ka lebaka leo, e fokotsehile haholo ntlafatsong ea polokeho ea betri.

Ka lebaka la electrolyte ea polymerization ea boemo bo omileng, kaha ha e tšoane le electrolyte ea mofuta oa gel, e na le tšireletso e molemo ka ho fetisisa mabapi le ho lutla, khatello ea mouoane le ho tuka. Hajoale, electrolyte e kopaneng ea hajoale ha e fihlelle litlhoko tsa ts&39;ebeliso ea betri ea lithium ea polymer, mme lipatlisiso tse ling li lebelletsoe ho sebelisoa haholo libeteri tsa polokelo tsa lithium tsa polymer. Electrolyte ea polymer e amanang le mohato, electrolyte e tiileng ea inorganic e na le polokeho e betere, ha e na volatilization, ha e na mollo, ha ho na bothata ba ho lutla.

Ho feta moo, matla a mochine oa electrolyte e tiileng ea inorganic a phahame, mocheso o thibelang mocheso o phahame haholo ho feta oa electrolyte ea mokelikeli le polymer ea tlhaho, e atolositse mocheso o sebetsang oa betri; thepa ea inorganic e entsoe filimi, e leng monyetla oa ho finyella lithium battery miniaturization, &39;me mofuta ona oa betri o na le nako e telele ea ho boloka bophelo e ka atolosa haholo tšimo ea ts&39;ebeliso ea libeteri tsa lithium tse teng. 2. Ntlafatsa bothata ba polokeho ea thermostability ea thepa ea elektrode e bakoa ka ho toba ke electrolyte e sa sireletsehang, empa ho tsoa sesosa sa sesosa, ke hobane betri ka boeona ha e phahame, ketsahalo ea mocheso o sa laoleheng o bakoa.

Ho phaella ho botsitso ba mocheso oa electrolyte, botsitso ba mocheso oa electrolyte e boetse ke e &39;ngoe ea mabaka a bohlokoa ka ho fetisisa, e le hore botsitso ba mocheso oa thepa ea electrode e boetse e le karolo ea bohlokoa ea ho ntlafatsa polokeho ea betri, empa electrode e boletsoeng mona Thermal botsitso ba thepa ha e akarelletse feela botsitso ba eona ba mocheso, empa hape e kenyelletsa botsitso ba mocheso oa motlakase. Hangata, botsitso ba mocheso oa lisebelisoa tse mpe tsa elektrode li khethoa ke ts&39;ebetso ea sebopeho sa thepa le electrode e mpe ea ho tjhaja. Mabapi le lintho tsa carbon, spherical carbon material, tse kang intermediate carbon microspheres (MCMB), e nang le karo-karolelano e tlaase, tefiso e phahameng le sethala sa ho ntša metsi, kahoo boemo ba eona ba ho tjhaja bo nyane, &39;me botsitso ba mocheso bo bapisoa.

E ntle, tshireletso e phahameng. Li4Ti5O12 ea sebopeho sa spinel e molemo ho feta botsitso ba sebopeho sa graphite ea laminated, &39;me sethala sa tefiso le ho tsoa se phahame haholo, kahoo botsitso ba mocheso bo molemo le polokeho e phahameng. Ka hona, MCMB kapa Li4Ti5o12 hangata e sebelisoa ka betri ea lithium-ion ea litlhoko tsa polokeho ho nka sebaka sa graphite e tloaelehileng joalo ka eleketrode e mpe.

Ho phaella ho thepa ka boeona, botsitso ba mocheso oa lisebelisoa tse mpe tsa electrode li amehile haholo ka botsitso ba mocheso oa lera le tiileng la electrolyte (SEI) ea sebopeho se fosahetseng sa electrolyte sa sebopeho sa electrolyte, se atisang ho sebelisoa ke lisebelisoa tse tšoanang, haholo-holo graphite. Nahana hore ke mohato oa pele oa ketsahalo ea tahlehelo ea mocheso. Ho na le litsela tse peli tsa bohlokoa tsa ho ntlafatsa botsitso ba mocheso oa filimi ea SEI: e &39;ngoe ke ho roala holim&39;a lisebelisoa tse mpe tsa electrode, tse kang ho roala mashala a amorphous kapa lera la tšepe holim&39;a graphite; e &39;ngoe ke ho eketsa li-additives tsa ho etsa filimi ka electrolyte, ka betere Nakong ea ts&39;ebetso ea ts&39;ebetso, ba theha filimi ea SEI e nang le botsitso ba lisebelisoa tsa electrode, tse molemo bakeng sa ho fumana botsitso bo molemo ba mocheso.