Intshayelelo kwi-pretreatment ye-nickel foam

I-nickel foamsisixhobo esisetyenziselwa ukwenza i-electrode yebhetri, kwaye inkqubo yokuveliswa kwezinto eziqhelekileyo ze-nickel foam yile ilandelayo: isiponji se-polyurethane kuqala siqhutywe, emva koko sifakwe kwi-electrodeposited, kwaye ekugqibeleni sintered.

Kula manyathelo angentla, unyango oluqhubayo lubandakanya ngokubanziukufakwa kweekhemikhali, ukuncamathelisa izinto ezincamathelayo, kunye ne-vacuum platingngeendlela ezintathu; i-electrodeposition ingaba yi-sulfate okanye i-sulfamate nickel plating; inkqubo ekhoyo yokucoca igqityezelwa kuqala ngokutshiswa komoya kwisiponji se-polyurethane, kwaye emva koko kuncitshiswe kwaye kufakwe isiponji phantsi kwe-atmosfera yokunciphisa i-hydrogen ngamanyathelo amabini, apho umoya ovuthayo kwisiponji se-polyurethane uhlanjululwa kwaye ukhutshwe kwiqondo lokushisa elingama-300 ukuya kuma-700. °C. Inkqubo ye-sintering igqitywe ngokutshiswa komoya kwisiponji se-polyurethane, kwaye emva koko kuncitshiswe kwaye kufakwe isiponji se-polyurethane kwindawo yokunciphisa i-hydrogen; Unyango lokunciphisa lwenziwa phantsi kwe-hydrogen yokunciphisa umoya kwiqondo lokushisa kwe-800 ukuya kwi-1000 ° C kwimizuzu engama-30-60, kwaye umoya wokunciphisa i-ammonia yokubola kwegesi, kunye nomthamo wegesi yokubola esetyenzisiweyo yi-0.8-1.2 L / g (igram nganye yenickel ifuna iilitha eziyi-0.8-1.2 zegesi yokubola ye-ammonia ekufuneka ityiwe)

Indlela yokwenza ephuculweyougwebu lwe-nickel, inyathelo eliquka conductivization, electrodeposition kunye sintering yesiponji polyurethane, ephawulwe kwelo nyathelo sintering exeliweyo kukwenza pyrolyze kunye sinter polyurethane amagwebu ngqo kwiatmosfera yokunciphisa emva electrodeposition, apho umoya ukunciphisa igesi ukubola ammonia, ubushushu ukunciphisa yi 400-1000 ° C., ixesha lokunciphisa yi 30-60 imizuzu, kunye nobungakanani ukusetyenziswa kwegesi yokubola yi-0.4-0.8 L / g. (Igram nganye ye-nickel idinga i-0.4-0.8 yelitha yegesi yokubola i-ammonia.) Igesi yokubola i-ammonia ngumxube we-nitrogen kunye ne-hydrogen, kwaye umlinganiselo we-nitrogen kunye ne-hydrogen yi-1: 3.

Indlela yokusabela kukuba emva kwe-electrodeposition yeugwebu lwe-nickelequlethe isiponji se-polyurethane ngokuthe ngqo kwi-hydrogen yokunciphisa umoya we-pyrolysis sintering, apho i-carbon kunye ne-hydrogen action, evelisa i-CH4, i-C2H6 kunye nezinye ii-hydrocarbons zegesi, le nkqubo ye-gasification ingentla yanele ukususa i-graphite C kwisicoci somzimba esinezingxobo.

Isombulula ngokufanelekileyo iintsilelo ezikhoyo kwi-teknoloji ekhoyo ye-nickel foam kwinkqubo ye-sintering, njengokulula ukukrazula, i-deformation arching, isivuno esiphantsi, ukusetyenziswa kwamandla aphezulu, i-nickel foam mechanical properties azinzile.