Isingeniso sokwelashwa kwangaphambili kwegwebu le-nickel

Igwebu le-nickeliyimpahla esetshenziselwa ukwenza ama-electrode ebhethri, futhi inqubo yokukhiqiza yezinto ezijwayelekile ze-nickel foam imi kanje: isipontshi se-polyurethane siqala ukwenziwa conductivized, bese si-electrodeposited, futhi ekugcineni sintered.

Kulezi zinyathelo ezingenhla, ukwelashwa okwenziwa ngokujwayelekile kuhlanganisai-chemical plating, i-coating conductive adhesive, kanye ne-vacuum platingngezindlela ezintathu; i-electrodeposition ingaba i-sulfate noma i-sulfamate nickel plating; inqubo yokucwilisa ekhona iqale iqedwe ngomoya oshise isipontshi se-polyurethane, bese unciphisa futhi ucwilise isiponji ngaphansi komkhathi onciphisa i-hydrogen ngezinyathelo ezimbili, lapho umoya ovuthayo esipontshini se-polyurethane ukhishwa nge-oxid futhi ukhishwe ikhabhoni ekushiseni okungama-300 kuya ku-700. °C. Inqubo ye-sintering iqedwa ngomoya ovuthayo esipontshini se-polyurethane, bese unciphisa futhi ucwilise isipontshi se-polyurethane emkhathini wokunciphisa i-hydrogen; Ukwelashwa kokunciphisa kwenziwa ngaphansi komkhathi wokunciphisa i-hydrogen ekushiseni kuka-800 kuya ku-1000 ° C imizuzu engu-30-60, futhi umoya wokunciphisa igesi yokubola i-ammonia, futhi inani legesi yokubola elidliwe ngu-0.8-1.2 L/g (igremu ngalinye ye-nickel idinga amalitha angu-0.8-1.2 wegesi yokubola ye-ammonia okufanele idliwe)

Indlela yokwenza ngconoigwebu le-nickel, isinyathelo esihlanganisa conductivization, electrodeposition kanye sintering of polyurethane isipontshi, esibonakala kuleso sinyathelo sintering eshiwo iwukuba pyrolyze futhi sinter igwebu polyurethane ngqo emkhathini ukunciphisa ngemva electrodeposition, lapho umkhathi ukunciphisa kuba ammonia ukubola igesi, izinga lokushisa ukunciphisa ngu-400-1000° C., isikhathi sokunciphisa imizuzu engama-30-60, kanye nenani ukusetshenziswa kwegesi yokubola kungu-0.4-0.8 L/g. (Igremu ngalinye le-nickel lidinga ukusebenzisa amalitha angu-0.4-0.8 egesi ebolayo ye-ammonia.) Igesi yokubola i-ammonia iyingxube ye-nitrogen ne-hydrogen, kanti isilinganiso somthamo we-nitrogen ne-hydrogen ngu-1:3.

Indlela yokusabela ukuthi ngemva electrodeposition ofigwebu le-nickelequkethe isiponji se-polyurethane ngqo emkhathini wokunciphisa i-hydrogen pyrolysis sintering, lapho isenzo se-carbon ne-hydrogen, esikhiqiza i-CH4, i-C2H6 namanye ama-hydrocarbon anegesi, inqubo yokufakwa kwegesi engenhla yanele ukususa i-graphite C kusicoci somzimba esinezimbotshana.

Ixazulula ngokuphumelelayo ukushiyeka okukhona kubuchwepheshe obukhona be-nickel foam kwinqubo ye-sintering, njengokulula ukuqhekeka, i-deformation arching, isivuno esincane, ukusetshenziswa kwamandla aphezulu, izakhiwo zemishini ye-nickel foam azinzile.