Cell yemafutal imhando yemuchina wekushandura simba, unogona kushandura simba remagetsi remafuta kuita simba remagetsi. Inonzi fuel cell nekuti mudziyo wekugadzira simba remagetsi pamwe chete nebhatiri. Fuel cell inoshandisa hydrogen semafuta ihydrogen fuel cell. Hydrogen fuel cell inogona kunzwisiswa sekuita kwe electrolysis yemvura kuita hydrogen ne oxygen. Maitiro ekuita kwehydrogen fuel cell akachena uye anoshanda. Hydrogen fuel cell haigumiriswe ne42% yekushanda kwekupisa kweCarnot cycle inoshandiswa muinjini yemotokari yechinyakare, uye kushanda kwayo kunogona kusvika kupfuura 60%.
Kusiyana nemaroketi, masero emafuta ehydrogen anogadzira simba rekinetic kuburikidza nekuita kwakasimba kwehydrogen neokisijeni, uye anoburitsa simba reGibbs free muhydrogen kuburikidza nemidziyo ye catalytic. Simba reGibbs free isimba re electrochemical rine entropy nedzimwe dzidziso. Musimboti wekushanda kwemasero emafuta ehydrogen ndewekuti hydrogen inosanganiswa kuita maion ehydrogen (kureva maproton) uye maerekitironi kuburikidza ne catalyst (Platinum) mu electrode yakanaka yesero. Maion ehydrogen anopfuura nepa proton exchange membrane kuenda ku electrode isina kunaka uye oxygen inoita kuti ive mvura nekupisa, uye maerekitironi anoenderana anoyerera kubva ku electrode isina kunaka kuenda ku electrode isina kunaka kuburikidza ne external circuit kuti agadzire simba remagetsi.
Mumasero emafuta, hydrogen neokisijeni zvinoitwa, uye pane kufambiswa kwechaji mukuita uku, zvichikonzera magetsi. Panguva imwe chete, hydrogen inosangana neokisijeni kuti igadzire mvura.
Semudziyo wemakemikari, chinhu chikuru chehunyanzvi hwe fuel cell stack i "proton exchange membrane". Mativi maviri efirimu ari pedyo ne catalyst layer kuti aparadzanise hydrogen kuita maion ane chaji. Nekuti hydrogen molecule idiki, maerekitironi ane hydrogen anogona kukweva kuenda kune rimwe divi kuburikidza nemaburi madiki efirimu. Zvisinei, mukufamba kwemaerekitironi ane hydrogen achipfuura nemaburi efirimu, maerekitironi anobviswa kubva mumamorekuru, zvichisiya mapurotoni ehydrogen ane chaji chete kuti asvike kune rimwe divi kuburikidza nefirimu.
Mapurotoni ehydrogenZvinokwezvwa neelectrode iri kune rimwe divi refirimu uye zvinosanganiswa nemamorekuru eokisijeni. Maplate eelectrode ari kumativi ese efirimu anopatsanura hydrogen kuita maion ehydrogen nemaerekitironi akanaka, uye anopatsanura okisijeni kuita maatomu eokisijeni kuti abate maerekitironi uye oashandura kuita maion eokisijeni (magetsi asina simba). Maerekitironi anogadzira magetsi pakati pemaplate eelectrode, uye maion maviri ehydrogen neion imwe yeokisijeni zvinobatana kuti zvigadzire mvura, iyo inova "marara" ega mukuita kwekuita. Muchidimbu, maitiro ese ekushanda ndiwo maitiro ekugadzira simba. Nekufambira mberi kwekuita kweoxidation, maerekitironi anoramba achiendeswa kunogadzira magetsi anodiwa kuti atyaire mota.
Nguva yekutumira: Kukadzi-12-2022