Ibhethri ye-lithium wuhlobo lwebhethri elisebenzisa insimbi ye-lithium noma i-lithium alloy njengento engalungile ye-electrode futhi isebenzisa isixazululo se-electrolyte esinganamanzi.Ibhethri ye-lithium yokuqala eyethulwe yavela kumsunguli omkhulu u-Edison.
Amabhethri e-Lithium - Amabhethri e-Lithium
ibhethri ye-lithium
Ibhethri ye-lithium wuhlobo lwebhethri elisebenzisa insimbi ye-lithium noma i-lithium alloy njengento engalungile ye-electrode futhi isebenzisa isixazululo se-electrolyte esinganamanzi.Ibhethri ye-lithium yokuqala eyethulwe yavela kumsunguli omkhulu u-Edison.
Ngenxa yokuthi izakhiwo zamakhemikhali ze-lithium metal zisebenza kakhulu, ukucubungula, ukugcinwa kanye nokusetshenziswa kwensimbi ye-lithium kunezidingo eziphakeme kakhulu zemvelo.Ngakho-ke, amabhethri e-lithium awazange asetshenziswe isikhathi eside.
Ngokuthuthukiswa kobuchwepheshe be-microelectronics ekhulwini lamashumi amabili, imishini emincane ikhula usuku nosuku, okubeka phambili izidingo eziphezulu zokunikezwa kwamandla.Amabhethri e-lithium abe esengena esigabeni esikhulu esisebenzayo.
Yaqala ukusetshenziswa kuma-pacemakers enhliziyo.Ngenxa yokuthi izinga lokuzikhipha ngokwalo lamabhethri e-lithium liphansi kakhulu, i-voltage yokukhipha iyakhuphuka.Kwenza kube nokwenzeka ukufaka i-pacemaker emzimbeni womuntu isikhathi eside.
Amabhethri e-lithium ngokuvamile ane-voltage yezinga eliphezulu engaphezu kuka-3.0 volts futhi afaneleka kakhulu ukunikezwa kwamandla wesekethe ehlanganisiwe.Amabhethri e-Manganese dioxide asetshenziswa kakhulu kumakhompyutha, izibali, amakhamera, nasemawashi.
Ukuze kuthuthukiswe izinhlobo ezisebenza kangcono, kuye kwafundwa izinto ezihlukahlukene.Bese wenza imikhiqizo ngendlela engakaze ibonwe ngaphambili.Isibonelo, amabhethri e-lithium sulphur dioxide namabhethri e-lithium thionyl chloride ahluke kakhulu.Izinto zabo ezisebenzayo ezisebenzayo nazo ziyi-solvent ye-electrolyte.Lesi sakhiwo sikhona kuphela ezinhlelweni ze-electrochemical ezingekho emanzini.Ngakho-ke, ukutadisha amabhethri e-lithium kuye kwakhuthaza nokuthuthukiswa kwethiyori ye-electrochemical yezinhlelo ezingenayo amanzi.Ngaphezu kokusetshenziswa kwezinyibilikisi ezihlukahlukene ezingenamanzi, ucwaningo lwamabhethri efilimu encane ye-polymer luye lwenziwa.
Ngo-1992, u-Sony wasungula ngempumelelo amabhethri e-lithium-ion.Ukusetshenziswa kwayo okusebenzayo kunciphisa kakhulu isisindo kanye nevolumu yemishini ye-elekthronikhi ephathekayo efana nomakhalekhukhwini namakhompyutha wezincwadi.Isikhathi sokusebenzisa sinwetshwa kakhulu.Ngenxa yokuthi amabhethri e-lithium-ion awanayo i-chromium yensimbi enzima, uma kuqhathaniswa namabhethri e-nickel-chromium, ukungcoliswa kwemvelo kuncipha kakhulu.
1. Ibhethri ye-lithium-ion
Amabhethri e-lithium-ion manje ahlukaniswe izigaba ezimbili: amabhethri e-lithium-ion ayiketshezi (LIBs) kanye namabhethri e-lithium-ion e-polymer (PLBs).Phakathi kwazo, ibhethri ye-lithium ion ye-lithium ibhekisela ebhethri lesibili lapho inhlanganisela ye-Li + intercalation i-electrode enhle nengalungile.I-electrode ephozithivu ikhetha inhlanganisela ye-lithium LiCoO2 noma i-LiMn2O4, futhi i-electrode engeyinhle ikhetha inhlanganisela ye-lithium-carbon interlayer.Amabhethri e-lithium-ion angamandla okushayela angcono kakhulu okuthuthukiswa ekhulwini lama-21 ngenxa yamandla kagesi aphezulu okusebenza, usayizi omncane, isisindo esilula, amandla aphezulu, awekho umthelela wenkumbulo, akukho ukungcola, ukuzikhipha okuphansi, nempilo yomjikelezo omude.
2. Umlando omfushane wokuthuthukiswa kwebhethri ye-lithium-ion
Amabhethri e-lithium namabhethri e-lithium ion amabhethri amasha anamandla aphezulu athuthukiswe ngempumelelo ngekhulu lama-20.I-electrode eyinegethivu yaleli bhethri i-lithium yensimbi, futhi i-electrode ephozithivu i-MnO2, SOCL2, (CFx)n, njll. Yasetshenziswa ngokungokoqobo ngawo-1970.Ngenxa yamandla ayo aphezulu, i-voltage ephezulu yebhethri, ububanzi obubanzi bokushisa okusebenza, kanye nempilo ende yokugcina, isetshenziswe kakhulu ezintweni zikagesi ezincane nezempi, ezifana nomakhalekhukhwini, amakhompyutha aphathwayo, amakhamera wevidiyo, amakhamera, njll., ngokwengxenye. ukushintsha amabhethri endabuko..
3. Amathemba okuthuthukiswa kwamabhethri e-lithium-ion
Amabhethri e-lithium-ion asetshenziswe kakhulu ezintweni eziphathwayo ezifana namakhompyutha aphathwayo, amakhamera wevidiyo, nokuxhumana kweselula ngenxa yezinzuzo zawo ezihlukile zokusebenza.Ibhethri ye-lithium-ion enamandla amakhulu ethuthukisiwe manje iye yahlolwa ezimotweni zikagesi, futhi kulinganiselwa ukuthi izoba omunye wemithombo yamandla eyinhloko yezimoto zikagesi ngekhulu lama-21, futhi izosetshenziswa kumasathelayithi, i-aerospace kanye nokugcinwa kwamandla. .
4. Umsebenzi oyisisekelo webhethri
(1) I-voltage yesekethe evulekile yebhethri
(2) Ukumelana nebhethri kwangaphakathi
(3) I-voltage yokusebenza yebhethri
(4) I-voltage yokushaja
I-voltage yokushaja isho amandla kagesi asetshenziswa amandla angaphandle asetshenziswa kuzo zombili iziphetho zebhethri lapho ibhethri lesibili lishajwa.Izindlela eziyisisekelo zokushaja zihlanganisa ukushaja kwamanje njalo kanye nokushajwa kwe-voltage engaguquki.Ngokuvamile, ukushaja kwamanje okuqhubekayo kusetshenziswa, futhi isici sakhona ukuthi i-chargency yokushaja izinzile phakathi nenqubo yokushaja.Njengoba ukushaja kuqhubeka, izinto ezisebenzayo ziyabuyiselwa, indawo yokusabela kwe-electrode iyancipha ngokuqhubekayo, futhi i-polarization ye-motor iyanda kancane kancane.
(5) Umthamo webhethri
Umthamo webhethri usho inani likagesi elitholwe ebhethrini, elivame ukuvezwa ngu-C, futhi iyunithi ivamise ukuvezwa nge-Ah noma i-mAh.Umthamo uwumgomo obalulekile wokusebenza kukagesi webhethri.Umthamo webhethri uvame ukuhlukaniswa ngomthamo wethiyori, umthamo ongokoqobo kanye nomthamo olinganisiwe.
Umthamo webhethri unqunywa umthamo wama-electrode.Uma amandla ama-electrode engalingani, umthamo webhethri uncike ku-electrode enomthamo omncane, kodwa akusona neze isamba samakhono ama-electrode aqondile noma angalungile.
(6) Umsebenzi wesitoreji nempilo yebhethri
Esinye sezici eziyinhloko zemithombo yamandla amakhemikhali ukuthi ikwazi ukukhulula amandla kagesi lapho isetshenziswa futhi igcine amandla kagesi lapho ingasebenzi.Okubizwa ngokuthi umsebenzi wesitoreji yikhono lokugcina ukushaja kwebhethri lesibili.
Mayelana nebhethri lesibili, impilo yesevisi iyipharamitha ebalulekile yokukala ukusebenza kwebhethri.Ibhethri lesibili liyashajwa futhi lishajwe kanye, elibizwa ngokuthi umjikelezo (noma umjikelezo).Ngaphansi kombandela othile wokushaja nokukhipha, inombolo yezikhathi zokushaja nokukhipha ibhethri engakwazi ukumelana nazo ngaphambi kokuba umthamo webhethri ufinyelele inani elithile ubizwa ngokuthi umjikelezo wokusebenza webhethri lesibili.Amabhethri e-lithium-ion anokusebenza okuhle kakhulu kwesitoreji nempilo yomjikelezo omude.
Amabhethri e-Lithium - Izici
A. Ukuminyana kwamandla aphezulu
Isisindo sebhethri ye-lithium-ion siyingxenye yebhethri ye-nickel-cadmium noma i-nickel-hydrogen yomthamo ofanayo, futhi umthamo ungama-40-50% we-nickel-cadmium kanye no-20-30% webhethri le-nickel-hydrogen. .
B. Amandla kagesi aphezulu
I-voltage yokusebenza yebhethri ye-lithium-ion eyodwa ingu-3.7V (inani eliyisilinganiso), elilingana namabhethri amathathu e-nickel-cadmium noma i-nickel-metal hydride axhunywe ochungechungeni.
C. Akukho ukungcola
Amabhethri e-lithium-ion awaqukethe izinsimbi eziyingozi njenge-cadmium, i-lead, ne-mercury.
D. Ayiqukethe i-metallic lithium
Amabhethri e-lithium-ion awaqukethe i-lithium eyinsimbi ngakho-ke awekho ngaphansi kwemithethonqubo efana nokwenqatshelwa ukuphatha amabhethri e-lithium endizeni yabagibeli.
E. Impilo yomjikelezo ophezulu
Ngaphansi kwezimo ezijwayelekile, amabhethri e-lithium-ion angaba nemijikelezo yokushaja engaphezu kuka-500.
F. Awukho umphumela wenkumbulo
Umthelela wenkumbulo ubhekisela kwinto yokuthi umthamo webhethri le-nickel-cadmium uyancishiswa phakathi nomjikelezo wokushaja nokukhipha.Amabhethri e-lithium-ion awanawo lo mphumela.
G. Ukushaja ngokushesha
Ukusebenzisa ishaja ye-voltage engaguquki yamanje kanye ne-voltage elinganiselwe engu-4.2V ingashaja ngokugcwele ibhethri ye-lithium-ion ngehora elilodwa kuya kwamabili.
Ibhethri ye-Lithium – Isimiso Nesakhiwo Sebhethri Lithium
1. Isakhiwo kanye nesimiso sokusebenza sebhethri ye-lithium ion: Ibhethri ye-lithium ion ebizwa ngokuthi ibhethri ibhekisela ebhethrini lesibili elakhiwe izinhlanganisela ezimbili ezingahle zihlanganise futhi zihlukanise ama-ion e-lithium njengama-electrode aqondile noma angalungile.Abantu babiza leli bhethri le-lithium-ion ngendlela eyingqayizivele, ethembele ekudlulisweni kwe-lithium ion phakathi kwama-electrode aqondile noma angalungile ukuze kuqedelwe ukushajwa kwebhethri nokusebenza kokukhipha, “njengebhethri lesihlalo esinyakazayo”, elivame ukubizwa ngokuthi “ibhethri ye-lithium” .Thatha i-LiCoO2 njengesibonelo: (1) Lapho ibhethri ishajwa, ama-ion e-lithium ayahlukaniswa ku-electrode ephozithivu futhi ahlangane ku-electrode eyinegethivu, ngokuphambene nalokho lapho ishajwa.Lokhu kudinga i-electrode ukuze ibe sesimweni se-lithium intercalation ngaphambi kokuhlanganiswa.Ngokuvamile, i-lithium intercalation transition metal oxide enamandla amakhulu kuno-3V uma kuqhathaniswa ne-lithium futhi ezinzile emoyeni ikhethwa njenge-electrode ephozithivu, njenge-LiCoO2, LiNiO2, LiMn2O4, LiFePO4.(2) Okwezinto ezisetshenziswayo ezingama-electrode angemuhle, khetha izinhlanganisela ze-lithium ezingasebenziseka kalula amandla azo asondele kumandla we-lithium ngangokunokwenzeka.Isibonelo, izinto ezihlukene zekhabhoni zifaka i-graphite yemvelo, i-synthetic graphite, i-carbon fibre, i-mesophase spherical carbon, njll. nama-oxide ensimbi, okuhlanganisa i-SnO, i-SnO2, i-Tin composite oxide SnBxPyOz (x=0.4～0.6, y=0.6-0.4, z= (2+3x+5y)/2) njll.
ibhethri ye-lithium
2. Ibhethri ngokuvamile lihlanganisa: positive, negative, electrolyte, separator, lead positive, plate negative, central terminal, insulating material (insulator), valve safety ( safetyvent), sealing ring (gasket), PTC (positive control terminal), ikesi lebhethri.Ngokuvamile, abantu bakhathazeke kakhulu nge-electrode enhle, i-electrode engalungile, ne-electrolyte.
ibhethri ye-lithium
Ukuqhathaniswa kwesakhiwo sebhethri ye-lithium-ion
Ngokusho kwezinto ezihlukahlukene ze-cathode, ihlukaniswe nge-iron lithium, i-cobalt lithium, i-manganese lithium, njll;
Kusukela ekuhlukanisweni komumo, ngokuvamile ihlukaniswe ibe yi-cylindrical nesikwele, futhi i-polymer lithium ion ingenziwa futhi kunoma yikuphi ukuma;
Ngokwezinto ezihlukene ze-electrolyte ezisetshenziswa kumabhethri e-lithium-ion, amabhethri e-lithium-ion angahlukaniswa abe izigaba ezimbili: amabhethri e-lithium-ion anguketshezi (LIB) kanye namabhethri e-lithium-ion wesimo esiqinile.I-PLIB) iwuhlobo lwebhethri ye-lithium-ion yesimo esiqinile.
i-electrolyte
Umqoqi Wamanje We-Shell/Package Barrier
Ibhethri ye-lithium-ion ewuketshezi Insimbi engagqwali engu-25μPE, ucwecwe lwe-aluminium 25μPE ne-aluminium foil ye-polymer lithium-ion ibhethri le-colloidal polymer aluminium/PP ifilimu eyinhlanganisela ngaphandle komgoqo noma ucwecwe lwethusi olulodwa lwe-μPE ne-aluminium foil
Amabhethri e-Lithium – Umsebenzi Wamabhethri e-Lithium Ion
1. Ukuminyana kwamandla aphezulu
Uma kuqhathaniswa namabhethri e-NI/CD noma e-NI/MH omthamo ofanayo, amabhethri e-lithium-ion anesisindo esilula, futhi amandla awo aqondene nevolumu aphindwe izikhathi ezingu-1.5 kuya kwezingu-2 kunalezi zinhlobo ezimbili zamabhethri.
2. I-voltage ephezulu
Amabhethri e-lithium-ion asebenzisa ama-electrode e-lithium anamandla kakhulu e-electronegative ukuze afinyelele ama-voltage afinyelela ku-3.7V, okuyi-voltage ephindwe kathathu yamabhethri e-NI/CD noma e-NI/MH.
3. Okungangcolisi, nokuhambisana nemvelo
4. Ukuphila komjikelezo omude
Ubude bempilo budlula izikhathi ezingama-500
5. Umthamo omkhulu wokulayisha
Amabhethri e-lithium-ion angashajwa ngokuqhubekayo ngomsinga omkhulu, ukuze leli bhethri lisetshenziswe ezintweni ezisebenza ngamandla amakhulu njengamakhamera namakhompyutha aphathekayo.
6. Ukuphepha okuhle kakhulu
Ngenxa yokusetshenziswa kwezinto ezinhle kakhulu ze-anode, inkinga yokukhula kwe-lithium dendrite ngesikhathi sokushajwa kwebhethri iyanqotshwa, okuthuthukisa kakhulu ukuphepha kwamabhethri e-lithium-ion.Ngesikhathi esifanayo, izesekeli ezikhethekile ezibuyiselekayo zikhethwa ukuze kuqinisekiswe ukuphepha kwebhethri ngesikhathi sokusetshenziswa.
Ibhethri ye-lithium – Indlela yokushaja ibhethri ye-Lithium ion
Indlela 1. Ngaphambi kokuba ibhethri ye-lithium-ion ihambe embonini, umenzi wenze ukwelashwa kokuvula futhi ukhokhiswe ngaphambili, ngakho-ke ibhethri ye-lithium-ion inamandla okusala, futhi ibhethri ye-lithium-ion ikhokhiswa ngokuvumelana nesikhathi sokulungisa.Lesi sikhathi sokulungisa sidinga ukwenziwa izikhathi ezi-3 kuye kwezi-5 ngokuphelele.Khipha.
Indlela 2. Ngaphambi kokushaja, ibhethri ye-lithium-ion ayidingi ukushajwa ngokukhethekile.Ukukhipha okungafanele kuzolimaza ibhethri.Lapho ushaja, zama ukusebenzisa ukushaja okunensa futhi unciphise ukushaja okusheshayo;isikhathi akufanele sidlule amahora angama-24.Kuphela ngemva kokuba ibhethri selishajwe ngokuphelele kwemijikelezo emithathu kuya kwemihlanu kanye nokukhipha lapho amakhemikhali angaphakathi “ayosebenza” ngokugcwele ukuze asetshenziswe ngokugcwele.
Indlela 3. Sicela usebenzise ishaja yokuqala noma ishaja yomkhiqizo ehloniphekile.Kumabhethri e-lithium, sebenzisa ishaja ekhethekile yamabhethri e-lithium bese ulandela imiyalelo.Uma kungenjalo, ibhethri lizolimala noma libe sengozini.
Indlela 4. Ibhethri esanda kuthengwa i-lithium ion, ngakho-ke izikhathi zokuqala ezi-3 kuya kwezi-5 zokushaja ngokuvamile zibizwa ngokuthi isikhathi sokulungisa, futhi kufanele ishaje amahora angaphezu kwe-14 ukuze kuqinisekiswe ukuthi umsebenzi we-lithium ion uyasebenza ngokugcwele.Amabhethri e-lithium-ion awanawo umthelela wenkumbulo, kodwa anokungena ngaphakathi okuqinile.Kufanele enziwe asebenze ngokugcwele ukuze kuqinisekiswe ukusebenza okuhle kakhulu ezinhlelweni zokusebenza ezizayo.
Indlela 5. Ibhethri ye-lithium-ion kufanele isebenzise ishaja ekhethekile, ngaphandle kwalokho ingase ingafinyeleli esimweni sokugcwala futhi ithinte umsebenzi wayo.Ngemva kokuyishaja, gwema ukuyibeka eshajani isikhathi esingaphezu kwamahora angu-12, futhi uhlukanise ibhethri nomkhiqizo we-elekthronikhi ohambayo uma ingasetshenziswa isikhathi eside.
Ibhethri ye-lithium - sebenzisa
Ngokuthuthukiswa kobuchwepheshe be-microelectronics ekhulwini lamashumi amabili, imishini emincane ikhula usuku nosuku, okubeka phambili izidingo eziphezulu zokunikezwa kwamandla.Amabhethri e-lithium abe esengena esigabeni esikhulu esisebenzayo.
Yaqala ukusetshenziswa kuma-pacemakers enhliziyo.Ngenxa yokuthi izinga lokuzikhipha ngokwalo lamabhethri e-lithium liphansi kakhulu, i-voltage yokukhipha iyakhuphuka.Kwenza kube nokwenzeka ukufaka i-pacemaker emzimbeni womuntu isikhathi eside.
Amabhethri e-lithium ngokuvamile ane-voltage yezinga eliphezulu engaphezu kuka-3.0 volts futhi afaneleka kakhulu ukunikezwa kwamandla wesekethe ehlanganisiwe.Amabhethri e-Manganese dioxide asetshenziswa kakhulu kumakhompyutha, izibali, amakhamera, nasemawashi.
Isibonelo sohlelo lokusebenza
1. Kunamaphakethe amaningi ebhethri ashintshwayo ukuze kulungiswe iphakethe lebhethri: njengalawo asetshenziswa kumakhompyutha ezincwadi.Ngemuva kokulungisa, kutholakala ukuthi uma leli phakethe lebhethri lilimele, amabhethri ngamanye kuphela anezinkinga.Ingashintshwa ngebhethri ye-lithium yeseli efanelekile.
2. Ukwenza ithoshi elincane elikhanya kakhulu Umbhali wake wasebenzisa ibhethri ye-lithium eyodwa engu-3.6V1.6AH eneshubhu elikhipha ukukhanya elikhanyayo kakhulu elimhlophe ukuze enze ithoshi elincane, okulula ukulisebenzisa, elihlangene futhi elihle.Futhi ngenxa yomthamo omkhulu webhethri, ingasetshenziswa isigamu sehora njalo ebusuku ngokwesilinganiso, futhi isisetshenziswe isikhathi esingaphezu kwezinyanga ezimbili ngaphandle kokushajwa.
3. Enye indawo kagesi engu-3V
Ngoba i-single-cell lithium battery voltage ingu-3.6V.Ngakho-ke, ibhethri ye-lithium eyodwa kuphela ingashintsha amabhethri amabili ajwayelekile ukuze anikeze amandla ezinsizeni ezincane zasendlini ezifana nemisakazo, ama-walkmans, amakhamera, njll., okungagcini nje ngokukhanya kwesisindo, kodwa futhi ihlala isikhathi eside.
Ibhethri ye-lithium-ion anode impahla - i-lithium titanate
Ingahlanganiswa ne-lithium manganate, izinto ze-ternary noma i-lithium iron phosphate nezinye izinto ezinhle ukuze kwakhiwe amabhethri esibili e-lithium ion angu-2.4V noma angu-1.9V.Ngaphezu kwalokho, ingasetshenziswa futhi njenge-electrode ephozithivu ukwenza ibhethri ye-lithium engu-1.5V ene-metal lithium noma i-lithium alloy negative electrode yesibili ibhethri.
Ngenxa yokuphepha okuphezulu, ukuzinza okuphezulu, isikhathi eside nezici eziluhlaza ze-lithium titanate.Kungabikezelwa ukuthi impahla ye-lithium titanate izoba yinto engalungile ye-electrode yesizukulwane esisha sebhethri ye-lithium ion eminyakeni engu-2-3 futhi isetshenziswe kabanzi ezimotweni ezintsha zamandla, izithuthuthu zikagesi kanye nalezo ezidinga ukuphepha okuphezulu, ukuzinza okuphezulu kanye nomjikelezo omude.inkambu yesicelo.I-voltage yokusebenza yebhethri ye-lithium titanate ingu-2.4V, i-voltage ephakeme kakhulu ingu-3.0V, kanti okwamanje ukushaja kufika ku-2C.
Ukwakhiwa kwebhethri ye-lithium titanate
I-electrode enhle: i-lithium iron phosphate, i-lithium manganate noma i-ternary material, i-lithium nickel manganate.
I-electrode engalungile: impahla ye-lithium titanate.
Isithiyo: Isithiyo samanje sebhethri ye-lithium enekhabhoni njenge-electrode eyinegethivu.
I-Electrolyte: I-electrolyte yebhethri ye-lithium enekhabhoni njenge-electrode eyinegethivu.
Ikesi lebhethri: Ikesi lebhethri le-lithium elinekhabhoni njenge-electrode eyinegethivu.
Izinzuzo zamabhethri e-lithium titanate: ukukhetha izimoto zikagesi esikhundleni sezimoto zikaphethiloli kuyisinqumo esingcono kakhulu sokuxazulula ukungcoliswa kwemvelo yasemadolobheni.Phakathi kwazo, amabhethri e-lithium-ion amandla adonse ukunaka okukhulu kwabacwaningi.Ukuze kuhlangatshezwane nezidingo zezimoto zikagesi zamabhethri e-lithium-ion ebhodini, ucwaningo nentuthuko Izinto ezingezinhle ezinokuphepha okuphezulu, ukusebenza kahle kwezinga kanye nokuphila isikhathi eside yizindawo zayo ezishisayo nobunzima.
Ama-electrode ebhethri e-lithium-ion engemihle yezentengiso ikakhulukazi asebenzisa izinto zekhabhoni, kodwa kusenobubi obuthile ekusetshenzisweni kwamabhethri e-lithium kusetshenziswa ikhabhoni njenge-electrode eyinegethivu:
1. I-lithium dendrite itholakala kalula ngesikhathi sokushajwa ngokweqile, okuholela ekujikelezeni okufushane kwebhethri futhi kuthinte umsebenzi wokuphepha webhethri ye-lithium;
2. Kulula ukwenza ifilimu ye-SEI, okuholela ekushajeni kokuqala okuphansi namandla okukhipha kanye nomthamo omkhulu ongenakuhlehliswa;
3. Okusho ukuthi, i-voltage yesikhulumi yezinto ze-carbon iphansi (eseduze ne-lithium yensimbi), futhi kulula ukubangela ukubola kwe-electrolyte, okuzoletha izingozi zokuphepha.
4. Enkambweni yokufakwa kwe-lithium ion nokukhishwa, ivolumu ishintsha kakhulu, futhi ukuzinza komjikelezo kubi.
Uma kuqhathaniswa nezinto zekhabhoni, i-spinel-type Li4Ti5012 inezinzuzo ezibalulekile:
1. Iwumsebenzi we-zero-strain futhi inokusebenza okuhle kokujikeleza;
2. I-voltage yokukhipha izinzile, futhi i-electrolyte ngeke ibole, ithuthukise ukusebenza kokuphepha kwamabhethri e-lithium;
3. Uma kuqhathaniswa nezinto ze-carbon anode, i-lithium titanate ine-coefficient ephezulu ye-lithium ion diffusion (2 * 10-8cm2 / s), futhi ingashajwa futhi ikhishwe ngenani eliphezulu.
4. Amandla e-lithium titanate aphakeme kunalawo e-lithium yensimbi ehlanzekile, futhi akulula ukukhiqiza i-lithium dendrites, ehlinzeka ngesisekelo sokuqinisekisa ukuphepha kwamabhethri e-lithium.
umjikelezo wesondlo
Iqukethe ama-transistors amabili omphumela wensimu kanye nebhulokhi ehlanganisiwe yesondlo S-8232.Ishubhu lokulawula ukushajwa ngokweqile kwe-FET2 kanye neshubhu lokulawula ukuchichima ngokweqile i-FET1 axhunywe ngochungechunge kusekethe, futhi amandla omthamo webhethri agadwa futhi alawulwa yi-IC yokulungisa.Lapho amandla kagesi ebhethri enyuka aze afike ku-4.2V , ishubhu yokulungisa ukushajwa ngokweqile i-FET1 iyavalwa, futhi ukushajwa kuyanqanyulwa.Ukuze ugweme ukungasebenzi, i-capacitor yokubambezeleka ngokuvamile yengezwa kumjikelezo wangaphandle.Uma ibhethri isesimweni sokushajwa, i-voltage yebhethri yehla yaya ku-2.55.
Isikhathi sokuthumela: Mar-30-2023