"Chigaro" che graphitized petroleum coke hachingangobviswe ne graphene by-products kana artificial graphite munguva pfupi, asi chinogona kusangana nematambudziko kubva pakuvandudzwa kwetekinoroji uye kugadziriswazve kwemaindasitiri kwenguva refu. Ongororo inotevera inoitwa kubva pazvikamu zvitatu: hunhu hwezvinhu, mamiriro ekushandiswa, uye dynamics yemaindasitiri.
I. Nzvimbo Yepamusoro yeGraphitized Petroleum Coke: Zvipingamupinyi Zviviri zveMutengo uye Maitiro
Hunhu Husingatsiviwi hwezvinhu zvisina kucheneswa
Graphitized petroleum coke ndiyo inonyanya kushandiswa pakugadzira zvinhu zve lithium-ion bhatiri, ine zvakanakira zvinosanganisira:
- Kushanda Nesimba Kwemari: Kugadzira tani imwe yegrafiti yekugadzira kunoda matani 1.2–1.5 epetroleum coke. Zvichienderana nemutengo wepasi we 6,000 yuan/tani yepetroleum coke muna 2025, mari yezvinhu zvakabikwa inokwana 36%–45% yemari yese yekugadzira graphite yekugadzira (inenge 25,000 yuan/tani). Kuchinja kune zvimwe zvinhu kwaizowedzera mari zvakanyanya.
- Kukura Kwemaitiro: Mushure mekugadzirisa graphitization pa2,500–3,000°C, petroleum coke inoumba chimiro chekristaro chegraphite chakarongwa, ichipa conductivity yemagetsi yakanaka uye kugadzikana kwekupisa—chinhu chikuru pakushanda kwegraphite yekugadzira.
Zvipingamupinyi Zvakasimba zveKugovera Zvinhu
- Zvipingamupinyi pakugadzirwa: Muna 2025, huwandu hwese hwemafuta ecoke muChina hunosvika matani angangoita mamiriyoni makumi maviri nemapfumbamwe, nemafuta ecoke asina sulfur akawanda (salfur content <3%) achisvika 30% (anenge mamiriyoni 8.7 ematani). Izvi zvinofanirwa kusangana nezvinodiwa nearuminiyamu pre-baked anodes, steel graphite electrodes, uye anode materials, zvichisiya mukana wekusanduka kwezvinhu.
- Kudzora Kutengeswa Kwezvinhu Zvisiri Zvese: Muna 2025, China yakaisa mitemo yekutengeswa kwezvinhu zvekugadzira zve graphite anode pamwe chete nezvimwe zvinhu zvine chekuita nazvo, zvichiita kuti vagadziri vemabhatiri vekune dzimwe nyika vakurumidze kuvandudzwa kwekutengesa zvinhu munzvimbo, zvichiwedzera kudiwa kwe coke ine sulfur shoma.
II. Vanopikisa: Miganhu yeGraphene By-Products neNatural Graphite
Zvigadzirwa zveGraphene: Kusakura Kwetekinoroji uye Zvipingamupinyi zveMari
- Kugadzirwa Kushoma: Zvigadzirwa zvinobva mukugadzirwa kwegraphene (semuenzaniso, ma graphene nanoribhoni, ma quantum dots) zvinoramba zviri murabhoritari kana mukushandiswa kudiki, zvisingakwanisike kutsiva petroleum coke zvakanyanya.
- Zvakaipira Mutengo: Semuenzaniso, tekinoroji yekugadzira hydrogen yeRice University inoda kuti zvigadzirwa zve graphene zvitengeswe ne5% yemitengo yemusika kuti zvidzikise mari yekugadzira hydrogen, zvichiratidza kusakwana kwemari yekushandisa mumaindasitiri.
Graphite Yechisikigo: Kuenzanisa Kushanda uye Mutengo
- Zvikanganiso pakushanda: Kunyangwe graphite yechisikigo inodhura 30% pasi pegraphite yekugadzira, chimiro chayo chekristaro chakagadzirwa zvakanaka chinokonzera anisotropy, zvichikonzera hupenyu hwema cycle husina kunaka uye kugona kwayo kumhanya zvichienzaniswa negraphite yekugadzira. Semuenzaniso, graphite yechisikigo inowanzoita ma cycle asingasviki 1,500, nepo graphite yekugadzira ichidarika 2,000.
- Kubudirira Kwetekinoroji: Kugadziriswa kwependi yepamusoro (semuenzaniso, nano-silicon carbide layers) kunogona kuwedzera hupenyu hwegirafiti yechisikigo kupfuura 2,000 cycles, asi kugadziriswa kwekuwedzera kunowedzera mitengo, zvichideredza kunaka kwemutengo wayo.
III. Zvimiro Zvenguva Refu: Kuchinja Kwetekinoroji uye Kugadzirisazve Maindasitiri
Mhedzisiro yeTekinoroji yeAnode yeChizvarwa Chinotevera
- Anode Dzine Silicon: Nesimba repfungwa re4,200 mAh/g (rakapetwa kagumi kupfuura graphite), anode dzinone silicon dzinogona kudzikamisa kumanikidzwa kwemari yepetroleum coke. Mugove wavo wemusika wakakwira kubva pa5% kusvika pa15% muna 2025, asi kuwedzera kwehuwandu (>300%) panguva yekufamba nebhasikoro kuchiri dambudziko guru rekudzikira kwehupenyu hwebhasikoro.
- Zvinhu Zvakasimba zveCarbon: Kabhoni yakaoma inobva muganda reAion (yakavakirwa paganda rekokonati) inokodzera mabhatiri e sodium-ion, uye zvinhu zvisina kugadzirwa zvinodhura chikamu chimwe muzvitatu kupfuura zve petroleum coke. Zvisinei, simba rayo shoma (~300 mAh/g zvichienzaniswa ne graphite's 372 mAh/g) rinoganhurira mukana wekuchinja kwenguva pfupi.
Kukwikwidzana Kwakatsetseka uye Makwikwi eZviwanikwa muChikamu Chemaindasitiri
- Upstream Lock-In: Vagadziri veanode vanotungamira mudzimba vanowana zvinhu zve coke ine sarufa shoma nekuwana mibairo muzvicherwa kana marasha. Semuenzaniso, CATL yakaderedza kuvimba ne coke ine petroleum nekushandisa maitiro ekugadzira graphitization anoenderera mberi kuti apfupise maitiro ekugadzira.
- Kubatana Kwepasi Pose: Makambani makuru emagetsi ekune dzimwe nyika (semuenzaniso, Samsung SDI, LG Energy Solution) akaumba hukama hwakasimba nemakambani emafuta ekuChina, vachichinjana mari kuti vawane zviwanikwa zvekushandisa kwemakore gumi anotevera.
Mhedziso: Kugadzikana Kwenguva Pfupi, Kuchenjerera Kwenguva Refu Kusatsiva
Kutonga kwe graphitized petroleum coke kuchiri kuchengetedzeka munguva pfupi, zvichitsigirwa nemitengo yakanaka, kukura kwemaitiro, uye kuomarara kwecheni yekugovera. Zvisinei, nekufamba kwenguva, kutengeserana kwetekinoroji dzechizvarwa chinotevera dzakadai se silicon-based anodes ne hard carbon, pamwe chete nemakwikwi ezviwanikwa kubva mukubatanidzwa kwe vertical, zvinogona kuderedza zvishoma nezvishoma monopoly yayo. Vane chekuita neindasitiri vanofanira kutanga:
- Kuchinja-chinja kweTekinoroji: Kukurumidzisa kuvandudzwa kwekushanda uye kudzikiswa kwemitengo yeanode dzakavakirwa pasilicon, hard carbon, nedzimwe nzira.
- Nzira Yekushandisa: Kuchengetedza macheni ezvekutengeswa kwezvinhu kuburikidza nekudyidzana mufekitori kana zvimwe zvinhu zvekugadzira (semuenzaniso, biomass coke).
- Kugadziriswa kweMutemo: Kuchinja-chinja marongero ezvekutengeswa kwezvinhu pasi rose pasi pekuwedzera kwekutonga kwekutengesa kunze kwenyika nekuwedzera kugona kwekugadzira zvinhu kunze kwenyika.
Nguva yekutumira: Ndira-09-2026