Ibhetri esebenza kakhulu:Ibhetri yeLithium-ionyenziwe ngamacandelo amane aphambili: imathiriyeli ye-electrode elungileyo, imathiriyeli ye-electrode engalunganga, isahluli kunye ne-electrolyte.Phakathi kwabo, isahluli siyinxalenye ephambili yangaphakathiiibhetri ze-lithium-ion.Nangona ingathathi nxaxheba ngokuthe ngqo kwi-electrochemical reaction, idlala indima ebalulekileyo ekusebenzeni kwebhetri.Ayichaphazeli kuphela umthamo, ukusebenza komjikelo kunye nentlawulo kunye nokukhupha ubuninzi bebhetri yangoku, kodwa inxulumene nokhuseleko kunye nobomi bebhetri.ibhetri.Umahluli ugcina ukusebenza kakuhle kwebhetri kunye nokusebenza ngokubonelela nge-ion conduction channels, ukukhusela ukuxuba i-electrolyte, kunye nokubonelela ngenkxaso yomatshini.I-ion conductivity ye-separator ichaphazela ngokuthe ngqo ukuhlawulwa kunye nokukhupha isantya kunye nokusebenza kakuhle kwebhetri.I-ion conductivity engcono inokuphucula ukuxinana kwamandla ebhetri.Ukongezelela, ukusebenza kwe-electrolyte yodwa ye-separator inquma ukhuseleko lwebhetri.Ukwahlukaniswa okusebenzayo kwe-electrolyte phakathi kwee-electrode ezintle kunye nezibi kunokuthintela imiba yokhuseleko efana neesekethe ezimfutshane kunye nokushisa.Isahluli kwakhona kufuneka sibe namandla afanelekileyo omatshini kunye nokuguquguquka ukujamelana nokwandiswa kunye nokunciphisa ibhetri kunye nokukhusela umonakalo womatshini kunye neesekethe ezimfutshane zangaphakathi.Ukongeza, isahluli kufuneka sigcine uzinzo lwesakhiwo kunye nokusebenza ngexeshaubomi bebhetriukuqinisekisa ukusebenza okuthembekileyo kwexesha elide kwebhetri.Nangona i-separator ingathathi nxaxheba ngokuthe ngqo kwi-electrochemical reaction yebhetri, inempembelelo ebalulekileyo kwiipropati eziphambili ezifana nomthamo webhetri, ukusebenza komjikelo, ukuhlawuliswa kunye nokukhupha isantya, ukhuseleko kunye nobomi. .Ngoko ke, ukuphuhliswa kunye nokulungiswa kwezahluli kubaluleke kakhulu kuphuhliso kunye nokusetyenziswa kweebhetri ze-lithium-ion.
1. Umsebenzi obalulekileyo wabahluli kwiiibhetri ze-lithium-ion
Abahluli badlala indima ebalulekileyo kwiibhetri ze-lithium-ion.Akusiyo kuphela isithintelo somzimba esahlula i-electrodes efanelekileyo kunye ne-negative, kodwa nayo inemisebenzi ebalulekileyo elandelayo:1.Ukuhanjiswa kwe-Ion: Umahluli kufuneka abe nokusebenza kakuhle kokuhanjiswa kwe-ion kwaye akwazi ukuvumela i-lithium ion ukuba idlulise ngokukhululekileyo phakathi kwee-electrodes ezilungileyo kunye ezimbi.Ngelo xesha, isahluli kufuneka sithintele ngokufanelekileyo ukuhanjiswa kwee-electron ukuthintela imijikelezo emfutshane kunye nokuzikhupha.2.Ukugcinwa kwe-electrolyte: Umhlukanisi kufuneka abe nokuchasana kakuhle nokungena kwe-solvent, enokugcina ngokufanelekileyo ukusabalalisa okufanayo kwe-electrolyte phakathi kwee-electrode ezintle kunye nezibi kunye nokuthintela ukulahleka kwe-electrolyte kunye nokuguqulwa koxinzelelo.3.Amandla omatshini: Isahluli kufuneka sibe namandla aneleyo omatshini ukumelana noxinzelelo lomatshini olufana nokunyanzeliswa, ukwandiswa kunye nokungcangcazela kwebhetri ukuqinisekisa ukuzinza kunye nokhuseleko lwebhetri.4.Ukuzinza kwe-Thermal: Umhluli kufuneka ube nokuzinza kakuhle kwe-thermal ukuze kugcinwe ukuzinza kwesakhiwo kwiindawo eziphakamileyo zokushisa kunye nokukhusela ukuchithwa kwe-thermal kunye nokuchithwa kwe-thermal.5.Ukutshatyalaliswa komlilo: Umhluli kufuneka ube ne-flame retardancy enhle, enokuthintela ngokufanelekileyo ibhetri emlilweni okanye ukuqhuma phantsi kweemeko ezingaqhelekanga.Ukuze uhlangabezane neemfuno ezingasentla, abahluli bavame ukwenziwa ngezinto zepolymer, ezifana ne-polypropylene (PP), i-polyethylene. (PE), njl. Ukongeza, iiparameters ezifana nobukhulu, i-porosity, kunye nobukhulu be-pore ye-separator iya kuchaphazela nokusebenza kwebhetri.Ngoko ke, kwinkqubo yokulungiselela iibhetri ze-lithium-ion, kubaluleke kakhulu ukukhetha izinto ezifanelekileyo zokwahlula kunye nokwandisa ukucwangciswa kwesakhiwo somhluli.
2. Indima ephambili yabahlukanisi kwiiibhetri ze-lithium:
Kwiibhetri ze-lithium-ion, isahluli sidlala indima ephambili kwaye sinemisebenzi ephambili elandelayo:1.Ion conduction: Isahluli sivumela i-ion ze-lithium ukuba zihanjiswe phakathi kwee-electrode ezintle kunye nezibi.Isahluli sivame ukuba ne-ionic conductivity ephezulu, enokukhuthaza ukukhawuleza kunye nokuhamba kwe-lithium ion kwibhetri kwaye iphumelele ukutshaja ngokufanelekileyo kunye nokukhupha ibhetri.2.Ukhuseleko lwebhetri: Isahluli sinokuthintela ukudibanisa ngokuthe ngqo kunye nesiphaluka esifutshane phakathi kwe-electrode efanelekileyo kunye ne-negative, ugweme ukugqithisa kunye nokushisa ngaphakathi kwebhetri, kwaye unikeze ukhuseleko lwebhetri.3.Ukuhlukaniswa kwe-Electrolyte: I-separator ikhusela iigesi, ukungcola kunye nezinye izinto kwi-electrolyte kwibhetri ekuxubeni phakathi kwe-electrode efanelekileyo kunye ne-negative, ukuphepha ukuphendulwa kweekhemikhali okungadingekile kunye nokulahlekelwa, kunye nokugcina ukuzinza kunye nomjikelezo wobomi bebhetri.4.Inkxaso yomatshini: Isahluli sidlala indima yenkxaso yomatshini kwibhetri.Iyakwazi ukulungisa iindawo zee-electrode ezilungileyo kunye nezingalunganga kunye nezinye izinto zebhetri.Kwakhona kunomlinganiselo othile wokuguquguquka kunye nokwandisa ukulungelelanisa nokwandiswa kunye nokunciphisa ibhetri.I-Separators idlala indima ebalulekileyo kwi-ion conduction, ukhuseleko lwebhetri, ukuhlukaniswa kwe-electrolyte kunye nenkxaso yomatshini kwiibhetri ze-lithium-ion.Inokuqinisekisa ukusebenza okuzinzileyo kunye nokusebenza kwebhetri.
3. Iintlobo zezahluli zebhetri ze-lithium-ion
Kukho iintlobo ezininzi zezahluli zebhetri ye-lithium-ion, eziqhelekileyo ziquka oku kulandelayo:1.Isahluli sePolypropylene (PP): Esi ngoku sesona sixhobo sixhaphakileyo sokwahlulahlula.Izahluli zePolypropylene zinokuchasana kweekhemikhali ezigqwesileyo, ukuzinza okuhle kwe-thermal kunye namandla omatshini, ngelixa ziphethe ukukhethwa kwe-ion ephakathi kunye neempawu zokuqhuba.2.I-Polyimide (PI) i-separator: I-Polyimide separator inozinzo oluphezulu lwe-thermal kunye nokuzinza kweekhemikhali, kwaye inokugcina ukusebenza okuzinzile kwiindawo eziphezulu zokushisa.Ngenxa yokumelana nombane ophezulu, ii-polyimide separators zihlala zisetyenziselwa iibhetri ezinobuninzi bombane kunye neemfuno eziphezulu zamandla.3.I-Polyethylene (PE) i-separator: I-polyethylene separator ine-ion conductivity ephezulu kunye namandla afanelekileyo omatshini, kwaye isetyenziswa rhoqo kwiintlobo ezithile zeebhetri ze-lithium-ion, ezifana ne-supercapacitors kunye neebhetri ze-lithium-sulfur.4.I-diaphragm ye-ceramic ehlanganisiweyo: I-diaphragm ye-ceramic ehlanganisiweyo yenziwe nge-ceramic fiber eqiniswe kwi-polymer substrate.Inamandla amakhulu omatshini kunye nokumelana nokushisa kwaye inokumelana nokushisa okuphezulu kunye nomonakalo womzimba.5.Isahluli seNanopore: Isahluli seNanopore sisebenzisa i-ion conductivity egqwesileyo yesakhiwo se-nanopore, ngelixa idibana namandla omatshini kunye nokuzinza kweekhemikhali.Kulindeleke ukuba isetyenziswe kwiibhetri ze-lithium-ion ezinamandla amakhulu kunye neemfuno zobomi obude.Ezi zihlukanisi zezinto ezahlukeneyo kunye nezakhiwo zingakhethwa kwaye zilungiswe ngokweendlela ezahlukeneyo zebhetri kunye neemfuno zokusebenza.
4. Iimfuno zokusebenza ze-lithium-ion zezahluli zebhetri
Izahluli zebhetri yeLithium-ion yinxalenye ebalulekileyo enezi mfuno zokusebenza zilandelayo:1.I-electrolyte conductivity ephezulu: Umhlukanisi kufuneka abe ne-electrolyte conductivity ephezulu ukukhuthaza ukuqhuba kwe-ion phakathi kwe-electrode efanelekileyo kunye ne-negative ukufezekisa ukutshaja ngokufanelekileyo kunye nokukhupha ibhetri.2.Ukukhethwa kwe-ion egqwesileyo: Umhluli kufuneka ube nokukhethwa kwe-ion okulungileyo, ukuvumela kuphela ukuhanjiswa kwe-lithium ion kunye nokuthintela ukungena okanye ukusabela kwezinye izinto kwibhetri.3.Ukuzinza okuhle kwe-thermal: Umhlukanisi kufuneka ube nokuzinza kakuhle kwe-thermal kwaye akwazi ukugcina ukuzinza kwesakhiwo phantsi kweemeko ezinzulu ezifana nokushisa okuphezulu okanye ukugqithisa ukuthintela ukukhutshwa kwe-thermal okanye i-electrolyte evaporation kunye nezinye iingxaki.4.Amandla omatshini agqwesileyo kunye nokuguquguquka: Isahluli kufuneka sibe namandla aphezulu omatshini kunye nokuguquguquka kokuthintela iingxaki ezinjengomphetho weesekethe ezimfutshane okanye umonakalo wangaphakathi, kwaye ulungelelanise ukwandiswa kunye nokuncipha kwebhetri.5.Ukumelana neekhemikhali ezilungileyo: Umhluli kufuneka ube nokumelana neekhemikhali ezilungileyo kwaye ukwazi ukuxhathisa ukubola okanye ukungcoliswa kwesahluli nge-electrolytes, iigesi kunye nokungcola kwibhetri.6.Ukuchasana okuphantsi kunye nokunyanzeliswa okuphantsi: Isahluli kufuneka sibe nokuchasana okuphantsi kunye nokunyanzeliswa okuphantsi ukunciphisa ilahleko yokuxhathisa kunye nokulahlekelwa kwe-electrolyte ngaphakathi kwebhetri.Iimfuno zokusebenza ze-lithium-ion zezahluli zebhetri ziphezulu ze-electrolyte conductivity, ukhetho oluhle kakhulu lwe-ion, ukuzinza okuhle kwe-thermal, ukugqwesa komatshini. amandla kunye nokuguquguquka, ukuchasana kakuhle kweekhemikhali, ukuchasana okuphantsi kunye nokunyanzeliswa okuphantsi.Ezi mfuno zokusebenza ziqinisekisa ukhuseleko lwebhetri, ubomi bomjikelezo kunye nokuxinana kwamandla.
Ixesha lokuposa: Sep-15-2023