Ama-electrode e-graphite abonise amathuba amakhulu okusetshenziswa emkhakheni omusha wamandla, njengamabhethri e-sodium-ion namabhethri e-solid-state. Izakhiwo zawo eziqinile zomzimba nezamakhemikhali kanye nesakhiwo esinezingqimba zinikeza ukwesekwa okubalulekile kokuthuthukiswa kokusebenza kwebhethri. Okwamanje, angathuthukisa ukuphepha kumabhethri e-solid-state futhi andise isikhala sokusetshenziswa ngokuthuthuka kobuchwepheshe kumabhethri e-sodium-ion.
I. Amabhethri Esimo Esiqinile: Izinzuzo zokuzinza nokuphepha kwe-graphite njengezinto ze-anode
Isakhiwo esinezingqimba sivimbela ukwakheka kwama-dendrite e-lithium
Isakhiwo sekristalu esinezingqimba se-graphite singaqondisa ngempumelelo ukuhlangana okufanayo kanye nokuqedwa kwama-ion e-lithium, sigweme ingozi ye-short-circuit ebangelwa ama-dendrite angena esihlukanisi, futhi sithuthukise kakhulu ukusebenza kokuphepha kwamabhethri e-solid-state. Lesi sici senza i-graphite ibe ngesinye sezixazululo ezikhethwayo zezinto ze-anode kumabhethri e-solid-state.
Ukuzinza kwamakhemikhali KUZIvumelanisa nezimo ezibucayi
Amabhethri e-Solid-state asebenzisa ama-electrolyte aqinile esikhundleni sama-electrolyte aketshezi, anikeza izinga lokushisa elibanzi lokusebenza kanye ne-voltage ephezulu. I-Graphite ingagcina ukuqina kwesakhiwo ezindaweni ezishisa kakhulu nezinomfutho ophezulu, iqinisekise impilo yomjikelezo wesikhathi eside wamabhethri futhi ihlangabezane nezidingo eziqinile zokuthembeka kwezinhlelo zokugcina amandla.
Amathuba okuphindaphinda ubuchwepheshe
Ngokuthuthukisa inqubo yokulungiselela (njengokwenza kube lula ukuhlanganisa amandla kanye nokugqoka ubuso), ubuningi bamandla kanye nokusebenza kahle kokukhipha ishaja kwama-anode e-graphite kungathuthukiswa kakhulu. Isibonelo, ama-anode e-silicon-carbon ahlanganiswe nezinto ezisekelwe ku-silicon afinyelele ekukhiqizweni okukhulu, ngomthamo othize ophakeme ngokuphindwe kathathu kuya kahlanu kunowe-graphite yendabuko, ngaleyo ndlela eba yisiqondiso esibalulekile sezixazululo zamandla aphezulu kumabhethri e-solid-state.
Ii. Amabhethri e-Sodium-ion: Ukuthuthukiswa Kwezobuchwepheshe kanye Nezinzuzo Zezindleko Zama-Graphite Anode
Ukuqamba okusha endleleni yokuhlanganisa ama-ion e-sodium
Umbono wendabuko uthi isikhala esiphakathi kwezingqimba ze-graphite (cishe u-0.335nm) asikwazi ukwamukela ama-ion e-sodium (anobubanzi obungu-0.36nm), kodwa izifundo zakamuva zifinyelele ukuhlanganiswa okuguqukayo kwama-ion e-sodium ngokwandisa isikhala esiphakathi kwezingqimba ze-graphite ngokusebenzisa i-ball milling noma ngokusebenzisa ama-compounds e-sodium-oxide ukwakha ukusabela kwamabhulokhi. Lokhu kuphumelela kuvule indlela entsha yokusetshenziswa kwe-graphite kumabhethri e-sodium-ion.
Izindleko kanye nezinzuzo zezinsizakusebenza
Umhlaba ucebile ngemithombo ye-graphite futhi usakazeke kabanzi. I-China ikhiqiza ngaphezu kwama-60% wamandla okukhiqiza emhlabeni wonke, futhi izindleko zezinto zokusetshenziswa ziphansi kakhulu kunezemithombo ye-lithium. Uma amabhethri e-sodium-ion esebenzisa ama-anode e-graphite, anganciphisa kakhulu izindleko zebhethri futhi asheshise inqubo yawo yokuhweba emikhakheni efana nokugcina amandla kanye nezimoto zikagesi ezisheshayo.
Ukusetshenziswa okuhlangene ngezinto eziqinile zekhabhoni
I-hard carbon isibe yinto eyinhloko ye-anode yamabhethri e-sodium-ion ngenxa yesakhiwo sayo esingahlelekile kanye nesikhala esikhulu phakathi kwezingqimba, kodwa inezinkinga zokusebenza kahle kokuqala okuphansi kanye nezindleko eziphakeme. Ukuhlanganiswa kwe-graphite ne-hard carbon kungalinganisa ukusebenza kanye nezindleko. Isibonelo, ubuchwepheshe be-hard carbon obumbozwe yi-asphalt bunikeza inketho engcono ye-anode yamabhethri e-sodium-ion ngokuthuthukisa ukuhanjiswa kukagesi, ukunciphisa ukumelana kwangaphakathi, kanye nokuthuthukisa ukuzinza komjikelezo.
Iii. Abashayeli Bemakethe Nokuhlelwa Kwezimboni
Isidingo samandla amasha sibone ukukhula okukhulu
Ukuthengiswa kwezimoto ezintsha zamandla emhlabeni jikelele bekulokhu kukhuphuka njalo, futhi isidingo samabhethri ahlala isikhathi eside futhi ashibhile ezinhlelweni zokugcina amandla sikhuphuke kakhulu, okuqhuba ukwanda kwemakethe yezinto ze-anode zebhethri le-lithium-ion. Umkhiqizo womhlaba wonke wezinto ze-anode kulindeleke ukuthi ufinyelele amathani ayizigidi ezingu-2.625 ngo-2025, phakathi kwawo i-graphite ingaphezu kuka-98%, ibe yinto eyinhloko ensimini entsha yamandla.
Imithombo yezobuchwepheshe yebhizinisi kanye nokwandiswa kwamandla
I-Shanshan Co., Ltd. ikhuthaza ukukhiqizwa ngobuningi kwezinto ezisekelwe ku-silicon. Ama-anode e-hard carbon asetshenziswa kabanzi kumabhethri e-lithium, amabhethri e-sodium-ion kanye namabhethri aqinile kancane. Umthamo wokukhiqiza owakhiwe ungamathani ayi-1,000 kanti umthamo osakhiwa ungamathani angama-40,000.
I-Yicheng New Energy: Ithembele ezinzuzweni zeqembu ezinsizeni ze-hydrogen, ikhabhoni kanye ne-silicon, yakhe uhlelo lwezimboni "lwezinto zekhabhoni ezisezingeni eliphezulu + ukuhlanganiswa kokugcinwa kwesitoreji semithombo-gridi-umthwalo". Inkampani yayo engaphansi kwayo ngokuphelele, i-Kaifeng Carbon, inesabelo semakethe yasekhaya esingaphezu kuka-30% ngomkhiqizo wayo ohamba phambili, ama-electrode e-graphite e-UHPΦ 600-700mm, abambe isikhundla esiphezulu embonini.
I-Catl ne-BTR: Bathuthukisa ndawonye izinto ze-anode ze-graphite ezixinene kakhulu ukuze bathuthukise ubuningi bamandla ebhethri kanye nokuphila komjikelezo, futhi baqinise isikhundla sabo sokuhola kwezobuchwepheshe.
Izinqubomgomo nezindinganiso ziholela ekuthuthukisweni kwezimboni
I-China ikhiphe imibhalo yenqubomgomo efana “neMigomo Yokulawula Imboni Ye-Graphite” kanye “noHlelo Lokuthuthukiswa Kwemboni Yezimoto Ezintsha Zamandla”, okukhuthaza ukuguqulwa kwemboni kube yintuthuko ephezulu, ehlakaniphile neluhlaza. Amabhizinisi athuthukisa amandla awo okukhulumisana kwezobuchwepheshe kanye nokuncintisana kwemakethe ngokuhlanganiswa kweketanga eligcwele (njengokubeka amandla okuzikhiqizela i-needle coke) kanye nokuhlanganyela ekwakhiweni kwezindinganiso zomhlaba wonke (njengezindinganiso zokuhlola i-ISO graphite electrode).
Iv. Izitayela Nezinselele Zesikhathi Esizayo
Ukuhlanganiswa kobuchwepheshe kanye nokusungula izinto ezintsha
Ucwaningo oluhlangene kanye nokuthuthukiswa kwezinto ze-graphene kanye ne-electrode, kanye nokwenza ngcono i-interface phakathi kwama-electrolyte aqinile nama-anode e-graphite, kuzoba yisihluthulelo sokudlula enkingeni yobuningi bamandla. Isibonelo, amabhethri asekelwe ku-graphene angathuthukisa ububanzi bokushayela futhi ahlangabezane nezidingo zezimoto zikagesi ezisezingeni eliphezulu.
Ukuvikelwa kwemvelo kanye nentuthuko esimeme
Izinga lokubuyiselwa kothuli lwe-graphite lidinga ukukhushulwa lifike ku-99.9%, kanti ubuchwepheshe bokukhiqiza amandla okushisa imfucuza ye-calcination bungabuyisa u-35% wamandla asetshenziswayo. Amabhizinisi adinga ukwakha uhlelo oluvaliwe "lokukhiqiza - ukuvuselela - ukuvuselela" ukuze abhekane nezindinganiso zokuvikela imvelo zomhlaba wonke njengentela yekhabhoni ye-EU.
Ukwanda kwezimakethe ezisafufusa
Nge-“Belt and Road Initiative”, amabhizinisi aseShayina e-graphite athumele ubuchwepheshe bawo eNingizimu-mpumalanga ye-Asia, e-Afrika nakwezinye izifunda, futhi asungula izisekelo zokukhiqiza zasendaweni ukuze agweme izithiyo zokuhweba. Isibonelo, kwakhiwa isisekelo sokukhiqiza sezinto ze-graphite anode eMalaysia ukuze kuhlangatshezwane nesidingo sendawo sezimoto ezintsha zamandla.
Isikhathi sokuthunyelwe: Agasti-22-2025