I-Cobalt ingasindisa izimoto ze-hydrogen. Iplatinamu ayitholakali kakhulu futhi iyabiza

Okuqukethwe

I-Cobalt ingenza izimoto ze-hydrogen zidume
- Ucwaningo lwe-Cobalt lusiza amaseli kaphethiloli ngokujwayelekile

Kungani izimoto ze-hydrogen zingamukeleki? Ngenxa yezizathu ezimbili eziyinhloko: iziteshi zokugcwalisa le gesi azikathandwa kakhulu, futhi kwamanye amazwe awekho nhlobo. Ngaphezu kwalokho, ama-fuel cell adinga ukusetshenziswa kweplatinamu, into ebizayo nengavamile, ethinta intengo yokugcina yezimoto ze-FCEV. Ngakho-ke, ososayensi sebevele basebenzela ukufaka i-cobalt esikhundleni seplatinamu.

I-Cobalt ingenza izimoto ze-hydrogen zidume

Uhlu lokuqukethwe

I-Cobalt ingenza izimoto ze-hydrogen zidume
- Ucwaningo lwe-Cobalt lusiza amaseli kaphethiloli ngokujwayelekile

I-Cobalt iyisici esinezici eziyingqayizivele. Isetshenziselwa i-fuel desulfurization ekucwengeni uwoyela ongahluziwe (yebo, yebo, Izimoto ezivuthayo nazo zidinga i-cobalt ukuze zishayele.), ibuye isetshenziswe ebunjiniyela bukagesi - nakumadivaysi amaningi anamandla ebhethri - kuma-cathodes amaseli e-lithium-ion. Ngokuzayo, lokhu kungasiza i-hydrogen fuel cell cars (FCEVs).

Njengoba inhloko yeqembu le-BMW R&D, uKlaus Fröhlich, ethe ekuqaleni kuka-2020, izimoto ze-hydrogen azitholakali ndawo, ngoba ama-fuel cell abiza ngokuphindwe ka-10 kunedrayivu kagesi. Izindleko eziningi (amaphesenti angu-50 ezindleko zengqamuzana) zivela ekusebenziseni ama-electrode eplatinamu, asebenza njengama-catalyst kumangqamuzana kaphethiloli, asheshisa ukusebenza kwe-hydrogen nomoya-mpilo.

Ososayensi basePacific Northwest National Laboratory wanquma ukushintsha ama-electrode eplatinamu nge-cobaltlapho ama-athomu ensimbi ahlanganiswe ne-nitrogen ne-carbon athomu. Isakhiwo esinjalo, lapho i-cobalt ibanjwe khona ezakhiweni ezilungiselelwe ngokukhethekile, kufanele ibe namandla ngokuphindwe kane kuneyenziwe ngensimbi (umthombo). Ekugcineni, kufanele futhi ishibhile kuneplatinamu; ekuhwebeni, intengo ye-cobalt ingaphansi ngokuphindwe ka-1 kunentengo yeplatinamu.

Ucwaningo lwe-Cobalt lusiza amaseli kaphethiloli ngokujwayelekile

Kwavela ukuthi ukusebenza kabusha kwe-medium enjalo kungcono kunamanye ama-catalysts akhiwe ngaphandle kokuba khona kweplatinamu noma insimbi. Kwakungenzeka futhi ukuthola ukuthi i-hydrogen peroxide (H2O2) ekhiqizwa ngesikhathi se-oxidation ibangela ukubola kanye nokuncipha kokusebenza kahle kwe-catalyst. Lokhu kwavumela ukuvikela ama-electrode nokwandisa amandla esakhiwo, okunganweba ukuphila kwamaseli esikhathini esizayo.

Impilo yamanje ye-fuel cell cell cell kulinganiselwa cishe emahoreni ayizinkulungwane eziyi-6-8 ngokusebenza okungaguquki kwezinhlelo, okunikeza izinsuku ezingama-333 zokusebenza okuqhubekayo noma kuze kufike eminyakeni eyi-11, ngaphansi kokusebenza amahora ama-2 ngosuku... Amaseli athinteka kakhulu yimithwalo eguquguqukayo nezinqubo zomsebenzi ezihambisana nokuntuleka komsebenzi, yingakho abanye ochwepheshe bebeka ngokucacile ukuthi akufanele basetshenziswe ezimotweni.

Buyekeza 2020/12/31, buka. 16.06/XNUMX: Inguqulo yasekuqaleni yombhalo eshiwo "ama-membrane eplatinamu". Leli iphutha elisobala. Ingaphezulu okungenani elilodwa lama-electrode yiplatinum. Lesi sithombe sibonisa ngokucacile isendlalelo se-platinum catalyst esingaphansi kwe-diaphragm. Siyaxolisa ngokuntuleka kokugxilisa ingqondo lapho sihlela umbhalo.

Ukuvula izithombe: umfanekiso, i-fuel cell (c) i-Bosch / Powercell