Mamiriro Ekushandisa uye Kuongororwa Kwetarisiro yeGraphite Electrodes muAnode Materials yeLithium-Ion Battery
1. Mamiriro Ekushandisa: Graphite Inotonga Musika Asi Inotarisana Nekumanikidzwa Kwekuchinja Kwetekinoroji
1.1 Nzvimbo Yakakurumbira Mumusika
Zvinhu zveGraphite anode (kusanganisira graphite yechisikigo uye yakagadzirwa) zvinoramba zviri zvinhu zvinonyanya kushandiswa mu lithium-ion battery anodes, zvichipa anopfuura 99% yekutumira pasi rose muna 2024. Synthetic graphite, ine zvakanakira zvakaita se high tap density, performance yakanaka ye cycle (>1,500 cycles), uye 93% performance yekutanga, ndiyo inonyanya kutonga chikamu chemagetsi emabhatiri ne market share inodarika 80%. Semugadziri mukuru wepasi rose, China yakawana 负极材料 (anode material) output ye 2.16 miriyoni metric tonnes muna 2024, ichitora 98.5% yemusika wepasi rose, ne graphite anodes ine anopfuura 75% yehuwandu uhu.
1.2 Zvakanakira Mutengo Wakakosha
Ma graphite anode akabudirira pamitengo yakaderera kuburikidza nehupfumi hwenyika, nemitengo ye graphite yekugadzira muChina ichidzikira kubva paRMB 55,000/tani muna 2022 kusvika paRMB 16,500/tani muna 2024, kudzikira kwe21.43%. Kubudirira kwemutengo uku kunoita kuti zvikwanisike kushandiswa munzvimbo dzine mitengo yakaderera dzakadai semagetsi evatengi uye kuchengetedza simba.
1.3 Zvipingamupinyi Zvetekinoroji Zviri Kubuda
Kugona kweGraphite mukuita kwayo zvinhu kwakaganhurirwa ku372 mAh/g, zvichisvika padanho repamusoro rekushanda kwayo uye zvichinetsa kusangana nekudiwa kwe "ultra-long range" mumotokari itsva dzemagetsi (NEVs). Kutsvaga simba rakawanda mumabhatiri emagetsi epamusoro kuri kutungamira kuchinjira kune zvinhu zvechizvarwa chinotevera zvakaita sesilicon-based uye hard carbon anodes.
2. Tarisiro dzekushandisa: Hadzitsiviwi Munguva Pfupi Asi Dzinotarisana Nenjodzi Dzekutsiva Kwenguva Refu
2.1 Nguva Pfupi (Makore 3–5): Graphite Inoramba Iri Mukati
- Kukura Kwezvinodiwa Zvisingaperi: Kuwedzera kweNEVs nemisika yekuchengetedza simba kuchawedzera kudiwa kwezvinhu zveanode, nekutumira kweChina kunotarisirwa kusvika matani mamiriyoni 2.41 panosvika gore ra2025, uye anode dzegraphite dzichiri kudarika 70%.
- Kugadzirisa Tekinoroji Kunochengetedza Kukwikwidzana: Matekinoroji ekudzivirira echikamu chemvura akawedzera hupenyu hwegirafiti anode kupfuura 2,000 cycles, nepo magadzirirwo e3D ane maburi anogonesa kuchaja nekukurumidza kwemaminitsi gumi nemashanu kusvika 80%, zvichizadzisa zvinodiwa zvemagetsi evatengi uye mabhatiri emagetsi emhando yepasi.
- Zvakanakira Mutengo Hazvina Kupikiswa: Kuvandudzwa mumaitiro ekugadzira graphitization (semuenzaniso, graphitization inoenderera mberi) kunoderedza mitengo, nepo anode dzakavakirwa pasilicon dzichiri kudhura zvakapetwa katatu kusvika kashanu, zvichideredza kushandiswa kwenguva pfupi kwehuwandu.
2.2 Nguva Yenguva Refu (Makore 5–10): Anode Dzinobva kuSilicon Dzinowedzera Kubata, Dzichidzvanya Mugove weMusika weGraphite
- Kubudirira kweAnode Yakavakirwa paSilicon: Kufambira mberi mumagadzirirwo e nanostructured, carbon coating optimizations, uye pre-lithiation technologies zvakavandudza kushanda kwefirst cycle kusvika pamusoro pe85%, kuwedzera hupenyu hwecycle kupfuura 1,000 cycles, uye kuderedza mitengo ne60% kubva pamazinga a2022 kusvika kuRMB 180/kg. Musika wepasi rose weanode wakavakirwa pasilicon unotarisirwa kusvika RMB 30 bhiriyoni panosvika 2025, nekupinda kwayo kuchipfuura 10%, uye pamwe 25% panosvika 2030.
- Zvinotungamira Mutemo Nemusika: Kutengeswa kwepasi rose kweNEV kunotarisirwa kusvika kumayuniti mamiriyoni makumi matanhatu panosvika gore ra2030, ukuwo kugona kwekuchengetedza simba kuchizokura kubva pa300 GWh muna 2025 kusvika 800 GWh muna 2030. Kudiwa kwesimba rakawanda kuchakurumidzisa kushandiswa kwema anode akavakirwa pasilicon.
- Nzvimbo Yokuzorora yeGraphite: MaGraphite anode anogona kudzokera kumabhatiri emagetsi emhando yepamusoro, nzvimbo yekuchengetedza simba, uye zvigadzirwa zvemagetsi zvevatengi, uye mugove wemusika unoparadzwa nezvinhu zvakagadzirwa nesilicon, lithium-metal, nezvimwe zvinhu zvepamusoro.
2.3 Njodzi Dzinogona Kuvapo Pakuchinjana: Mabhatiri eSodium-Ion neSolid-State
- Kutengeserana kweMabhatiri eSodium-Ion: Kana mitengo ikadonha pasi peRMB 0.3/Wh, mabhatiri esodium-ion anogona kukanganisa kudiwa kweanode yegraphite, kunyanya mukuchengetedza simba.
- Kukanganiswa kweBateri Rinomira Munzvimbo Yakasimba: Kusanganiswa kwemaelectrolyte anomira munzvimbo yakasimba uye maanode e lithium-metal kunogona kuchinja mamiriro eanode, kunyange hazvo kutengeserana kuchichiri kure nemakore mashanu kusvika gumi.
3. Maitiro eIndasitiri uye Mazano Ehurongwa
3.1 Nzira dzeKudzokorora Tekinoroji
- Graphite Anodes: Tarisa pakuvandudza mashandiro ekuchaja nekukurumidza (semuenzaniso, kuputira kwechikamu chemvura), kudzikisa mitengo (semuenzaniso, kugadzika kwegirafiti nguva dzose), uye kurarama kwenguva refu (semuenzaniso, zvivakwa zve3D zvine maburi).
- Anode Dzinobva kuSilicon: Kutarisa kukura kweCVD silicon-carbon process, pre-lithiation industrialization, uye mashandisirwo e graphite-silicon composite (semuenzaniso, mhinduro dzeBTR dzeS+i graphite).
- MaAnode Ari Kubuda: Maanode eLithium-metal uye ane porous carbon emabhatiri eLithium-sulfur ari kupinda muchikamu chekutanga, nemapurojekiti ekubatana kweindasitiri nedzidzo akawedzera katatu kubvira muna 2022.
3.2 Mazano Ehurongwa hweMakambani
- Nzira Yenguva Pfupi: Gadzira ma anode emasisitimu e cathode ane nickel yakawanda uye silicon-carbon composites kuti zviwedzere mari yezvigadzirwa.
- Nzira Yenguva Refu: Isa mari mumabasa ekuchengetedza magwaro (semuenzaniso, kugadzirisa macoating, pre-lithiation) uye simbisa hukama nevanogadzira mabhatiri vepamusoro-soro pasi rose kuti usimbise nzvimbo dzemusika.
- Kuderedza Njodzi: Kuisa mari yakasiyana-siyana mu graphite, silicon-based, uye lithium-metal tekinoroji kudzivirira njodzi dzekutsiva; kuisa pamberi vatengesi vane ESG performance yakasimba uye tsika dzekugadzira zvinhu zvakasvibira.
4. Mhedziso
Ma electrode eGraphite anoramba achikosha mu lithium-ion battery anodes munguva pfupi, zvichitsigirwa nemutengo wakaderera, kugadzikana, uye kugadziriswa kuri kuenderera mberi kwehunyanzvi. Zvisinei, kufambira mberi mu silicon-based anodes uye kuwedzera kwesimba remagetsi muNEVs zvinounza njodzi dzenguva refu dzekutsiva. Makambani anofanirwa kuyera hunyanzvi, kudzora mitengo, uye kugona kwekutengesa zvinhu kusvika pakuchinja kubva "pakukura kwehukuru" kuenda ku "kuvandudzwa kwemhando," zvichizopedzisira zvaita kuti indasitiri iende kusimba remagetsi rakawanda, hupenyu hurefu, uye mitengo yakaderera.
Nguva yekutumira: Chikunguru-22-2025