Mekhahlelo ea Ts'ebetso ea Lipoleiti tsa Bipolar tsa Titanium tse nang le Liaparo tse fapaneng

Ho roala lera la conductive kutu e manganga holim'a titanium ka katleho qoba sebopeho sa oxide filimi holim'a poleiti titanium bipolar le ho finyella litlhoko tsa tshebetso ya poleiti electrode. Ntle le ho hanyetsa kutu le conductivity e ntle ea motlakase, ho roala ho boetse ho hloka ho ba le matla a matle a ho kopanya le substrate. Ka nako e ts'oanang, kaha mocheso oa PEMFC o tla fetoha pakeng tsa mocheso oa kamore le 80 ° C, ho roala le thepa ea substrate ho hlokahala hore ho be le li-coefficients tse tšoanang tsa ho atolosa mocheso. E le ho qoba delamination le ho phunyeha ha seaparo nakong ea phetoho ea mocheso, tšireletso ea thepa e tla lahleha.

Liaparo tse tloaelehileng tse sebelisoang haholo-holo li arotsoe ka lihlopha tse 2, e leng liphahlo tse entsoeng ka tšepe (litšepe tsa bohlokoa, k'habone ea tšepe / nitride) le liphahlo tse entsoeng ka carbon (graphite, li-polymers conductive, carbon amorphous, joalo-joalo).

Mekhahlelo ea ts'ebetso ea lipoleiti tsa titanium bipolar tse nang le liphahlo tse fapaneng

E le karolo ea bohlokoa ea lisele tsa mafura a hydrogen, lipoleiti tsa bipolar li bapala karolo ea bohlokoa ts'ebetsong ea lisele, litšenyehelo le ho tšoarella. Litaba tse peli tsa bohlokoa hona joale tse thibelang ho rekisoa ha lisele tsa mafura a hydrogen ke litšenyehelo le nako e telele, 'me litšenyehelo tsa lipoleiti tsa bipolar li khethiloe ho isa bohōleng bo itseng ka thepa ea elektrode, ts'ebetso ea tšimo ea phallo le mokhoa oa ho lokisa li-electrode coating.

Lisebelisoa tse entsoeng ka graphite le carbon-based composite ha li sa khona ho finyella litlhoko tsa lisele tsa mafura a hydrogen mabapi le ts'ebetso, 'me thepa ea tšepe e se e fetohile lisebelisoa tse ka sehloohong bakeng sa lipoleiti tsa hydrogen fuel cell bipolar. Ho phaella moo, matla a phahameng esale e le ho lelekisa lisele tsa mafura a hydrogen. Li-alloys tsa titanium le tsa titanium ka thepa ea tšepe li na le letsoalo le tlase le matla a khethehileng a phahameng, 'me li na le khanyetso e ntle ea kutu ka liseleng tsa mafura tsa hydrogen, tse ka fokotsang boima le boholo ba lipoleiti tsa bipolar. Matla a khethehileng a matla le matla a khethehileng a betri a ntlafatsoa haholo, 'me lihlahisoa tsa kutu tse hlahisoang ke titanium le li-alloys tsa titanium nakong ea ts'ebetso ea nako e telele ha li na chefo ho mekhoa le li-catalyst tsa proton, tse thusang ho ntlafatsa botsitso le ho tšoarella ha ts'ebetso ea betri.

Mekhabiso ea tšepe ea carbon/nitride le amorphous carbon coatings e lokiselitsoeng holim'a lipoleiti tsa titanium bipolar li na le thepa e ntle e felletseng ebile li na le lipatlisiso tse phahameng le boleng ba ts'ebeliso. Leha ho le joalo, liphahlo tsena li na le bofokoli ba pinhole, kahoo sepheo se seholo sa lipatlisiso tsa morao-rao ke ho ntlafatsa Coating compactness, matla a bond ea filimi le conductivity ea ho roala holim'a metsi. Ho phaella moo, ho roala ho lokela ho ba le hydrophobicity e ntle ho thusa ho tsoa ha metsi a hlahisoang ke karabelo.

Ho finyella thepa ena e pharaletseng, litlhoko tse phahameng li behoa holim'a moralo oa moralo le ho hlophisoa ha mokhatlo oa ho roala. Sebopeho se kopantsoeng le sa nano sa sebopeho sa ho roala se ka ntlafatsa boima ba 'mele, ho hanyetsa kutu le motlakase oa motlakase ho isa bohōleng bo itseng,' me sa ntlafatsa botsitso ba tšebeletso le ho tšepahala ha poleiti ea titanium, e leng eona tataiso e ka sehloohong ea tsoelo-pele ea nakong e tlang.