I-fuel cell bipolar plate

I-Bipolar plate iyona nxalenye engundoqo ye-reactor, enempembelelo enkulu ekusebenzeni kunye neendleko ze-reactor. Okwangoku, i-bipolar plate yahlulwe kakhulu kwi-graphite plate, i-composite plate kunye ne-metal plate ngokwezinto eziphathekayo.

I-Bipolar plate yenye yeendawo eziphambili ze-PEMFC, indima yayo ephambili kukuthutha igesi kwindawo yokuhamba komhlaba, ukuqokelela kunye nokuqhuba okwangoku, ukushisa kunye namanzi aveliswa yimpendulo. Ngokuxhomekeke kuhlobo lwemathiriyeli, ubunzima bestaki sePEMFC bumalunga nama-60% ukuya kuma-80% kwaye ixabiso limalunga nama-30%. Ngokweemfuno ezisebenzayo zeplate ye-bipolar, kunye nokuqwalasela indawo ye-acidic electrochemical reaction ye-PEMFC, i-bipolar plate iyadingeka ukuba ibe neemfuno eziphezulu zokuqhuba umbane, ukuqina komoya, iipropati zomatshini, ukuxhathisa ukubola, njl.

Ipleyiti ephindwe kabini ngokwezixhobo ikakhulu yahlulwe yangamacandelo amathathu epleyiti yegraphite, ipleyiti edityanisiweyo, ipleyiti yesinyithi, ipleyiti ephindwe kabini yegraphite yeyona isetyenziswa ngoku yasekhaya ipleyiti ephindwe kabini yePEMFC, ukuhanjiswa kombane, ukuhanjiswa kwe-thermal, uzinzo oluhle kunye nokumelana nomhlwa kunye nokunye ukusebenza. kodwa iipropathi zoomatshini ezibuthathaka ngokwentelekiso, brittle, ubunzima bomatshini bukhokelela kwiingxaki zeendleko eziphezulu ezithwaxwa ngabavelisi abaninzi.

Igraphiteipleyiti ye-bipolarintshayelelo:

Iipleyiti ze-bipolar ezenziwe nge-graphite zine-conductivity efanelekileyo yombane, i-thermal conductivity kunye ne-corrosion resistance, kwaye ziyi-bipolar plates ezisetyenziswa ngokuqhelekileyo kwi-PEMFCS. Nangona kunjalo, ukungona kwayo kuyabonakala ngakumbi: ubushushu begraphitization yeplate yegraphite ngokuqhelekileyo buphezulu kune-2500 ℃, ekufuneka iqhutywe ngokwenkqubo yokufudumeza engqongqo, kwaye ixesha lide; Inkqubo yomatshini iyacotha, umjikelo ude, kwaye ukuchaneka komatshini kuphezulu, okukhokelela kwixabiso eliphezulu leplate yegraphite; I-graphite i-fragile, i-plate egqityiweyo kufuneka iphathwe ngokucophelela, indibano inzima; I-graphite i-porous, ngoko ke iipleyiti kufuneka zibe zi-millimeters ezimbalwa ukuze zivumele iigesi ukuba zihlukane, okukhokelela ekuxininiseni okungaphantsi kwezinto ngokwazo, kodwa imveliso egqityiweyo enzima.

Ukulungiswa kwegraphiteipleyiti ye-bipolar:

I-toner okanye i-graphite powder ixutywe ne-resin ye-graphitized, i-press eyenziwe, kunye ne-graphitized kwiqondo lokushisa eliphezulu (ngokuqhelekileyo kwi-2200 ~ 2800C) kwindawo yokunciphisa okanye phantsi kweemeko ze-vacuum. Emva koko, ipleyiti yegraphite ifakwe ukutywina umngxuma, kwaye emva koko umatshini wokulawula amanani usetyenziselwa ukucubungula indlela yegesi efunekayo kumphezulu wayo. IGRAPHITIZATION YOBUCHUMU OBUPHAKAMILEYO KUNYE NOKWENZA AMASHISHINI EGASI EZONA ZIZATHU EZINGUNDOQO ZENTLEKO EZIPHAKAMILEYO YE-BIPOLAR PLATES, KUNYE NE-ACCOUNTING YOBUCHULE phantse i-60% YEYONKE IINDLEKO ZESELI YAMAFUTHA.

Ipleyiti yeBipolarlelinye lawona malungu angundoqo kwistakhi yeeseli zamafutha. Imisebenzi yayo ephambili yile ilandelayo:

1. Uqhagamshelo lwebhetri enye

2, Hambisa amafutha (H2) kunye nomoya (02)

3, Ukuqokelelwa kwangoku kunye nokuqhutywa

4, Inkxaso yesitaki kunye ne-MEA

5, Ukususa ubushushu obuveliswa kukusabela

6, Khupha amanzi avelisiweyo kwimpendulo