1. Gutegura igifuniko
Kugirango byorohereze ikizamini cyamashanyarazi nyuma, 30mm yatoranijwe × 4 mm 304 ibyuma bitagira umwanda nkibishingiro. Igipolonye hanyuma ukureho igisigisigi cya oxyde gisigaye hamwe nuduce twinshi twinshi hejuru yubutaka hamwe na sandpaper, ubishyire muri beaker irimo acetone, uvure ikizinga kiri hejuru ya substrate hamwe na bg-06c isukura ultrasonic isukura uruganda rukora ibikoresho bya elegitoroniki ya Bangjie kuminota 20min, ukureho imyanda yambara hejuru yicyuma cya substrate hamwe ninzoga zumye, hanyuma ukumishe. Hanyuma, alumina (Al2O3), graphene na Hybrid carbone nanotube (mwnt-coohsdbs) byateguwe bikwiranye (100: 0: 0, 99.8: 0.2: 0, 99.8: 0: 0.2, 99.6: 0.2: 0.2), hanyuma bishyirwa mumashini yumupira (qm-3sp2 ya Nanjing Ninging inganda). Umuvuduko wo kuzenguruka urusyo rwumupira washyizwe kuri 220 R / min, hanyuma urusyo rwumupira ruhinduka
Nyuma yo gusya umupira, shiraho umuvuduko wo kuzunguruka wikigega cyo gusya umupira kugirango ube 1/2 mugihe kimwe nyuma yo gusya umupira urangiye, hanyuma ushireho umuvuduko wo kuzunguruka wikigega cyo gusya umupira kuba 1/2 muburyo bumwe nyuma yo gusya umupira. Umupira wasya ceramic agregate hamwe na binder bivangwa neza ukurikije igice kinini cya 1.0 ∶ 0.8. Hanyuma, igifuniko ceramic ceramic cyabonetse mugukiza inzira.
Ikizamini cya ruswa
Muri ubu bushakashatsi, ikizamini cya electrochemical corrosion cyakoresheje Shanghai Chenhua chi660e ahakorerwa amashanyarazi, kandi ikizamini gikoresha sisitemu eshatu za electrode. Electrode ya platine ni electrode ifasha, ifeza ya silver ya chloride ya electrode ni electrode yerekana, naho icyitegererezo cyashizweho ni electrode ikora, hamwe nubuso bugaragara bwa 1cm2. Huza electrode yerekana, electrode ikora hamwe na electrode ifasha muri selile ya electrolytique hamwe nigikoresho, nkuko bigaragara ku gishushanyo cya 1 nicya 2. Mbere yikizamini, shyira icyitegererezo muri electrolyte, ni igisubizo cya NaCl 3.5%.
3. Isesengura rya Tafel ryamashanyarazi yangirika yimyenda
Igishushanyo cya 3 cyerekana umurongo wa Tafel wa substrate idashyizwe hamwe na ceramic ceramic yubatswe hamwe ninyongeramusaruro zitandukanye nano nyuma yo kwangirika kwamashanyarazi kuri 19h. Umuvuduko wa ruswa, ubukana bwa ruswa hamwe namakuru yikizamini cyo gukumira amashanyarazi yakuwe mu kizamini cya electrochemic ruswa yerekanwa mu mbonerahamwe ya 1.
Tanga
Iyo ubwinshi bwangirika bwangirika ari buto kandi uburyo bwo kurwanya ruswa bukaba buri hejuru, ingaruka zo kurwanya ruswa zishobora kuba nziza. Birashobora kugaragara ku gishushanyo cya 3 no ku mbonerahamwe ya 1 ko iyo igihe cyo kwangirika ari 19h, imbaraga ntarengwa zo kwangirika kwa materique yambaye ubusa ni -0.680 V, naho ubwinshi bwangirika bwa matrix nabwo bunini cyane, bugera kuri 2.890 × 10-6 A / cm2。 Iyo butwikiriwe na ceramic ya alumina yera, ubwinshi bwangirika bwaragabanutse kugera kuri 78% naho PE yari 22.01%. Irerekana ko igipfundikizo ceramic gifite uruhare runini rwo kurinda kandi gishobora kunoza kwangirika kwangirika kwingingo ya electrolyte idafite aho ibogamiye.
Iyo 0.2% mwnt-cooh-sdbs cyangwa 0.2% graphene yongewe kuri coating, ubucucike bwa ruswa bwagabanutse, ubukana bwiyongera, kandi kurwanya ruswa kwangirika kwarushijeho kunozwa, hamwe na PE ya 38.48% na 40.10%. Iyo ubuso butwikiriwe na 0.2% mwnt-cooh-sdbs na 0.2% ya graphene ivanze na alumina, umuyoboro wa ruswa ukomeza kugabanuka kuva kuri 2.890 × 10-6 A / cm2 ukamanuka kuri 1.536 × 10-6 A / cm2, agaciro gakomeye ko guhangana, kiyongereye kuva kuri 11388 Ω kugera kuri 28079 Ω, kandi PE yo gutwikira irashobora kugera kuri 46.85%. Irerekana ko ibicuruzwa byateguwe bifite intego nziza yo kurwanya ruswa, kandi ingaruka ziterwa na carbone nanotube na graphene zirashobora kunoza neza kwangirika kwangirika kwububiko bwa ceramic.
4. Ingaruka zo gushira umwanya kuri coing impedance
Kugirango turusheho gucukumbura ruswa yo kwangirika kwifuniko, urebye ingaruka zigihe cyo kwibiza cyicyitegererezo muri electrolyte mugupimisha, haboneka umurongo wo guhindura imirongo yo kurwanya imyenda ine mugihe cyo kwibiza, nkuko bigaragara ku gishushanyo cya 4.
Tanga
Mugihe cyambere cyo kwibiza (10 h), bitewe nubucucike bwiza nuburyo bwububiko, electrolyte iragoye kwibira muri kote. Muri iki gihe, igipfundikizo ceramic cyerekana imbaraga nyinshi. Nyuma yo gushiramo igihe runaka, kurwanya biragabanuka cyane, kubera ko uko ibihe bigenda bisimburana, electrolyte igenda ikora umuyoboro wangirika unyuze mu myobo no mu mwobo wa coating hanyuma ikinjira muri matrike, bigatuma kugabanuka gukabije kwifata.
Mu cyiciro cya kabiri, iyo ibicuruzwa byangirika byiyongereye ku mubare runaka, ikwirakwizwa rirahagarikwa kandi icyuho kigenda gihagarikwa buhoro buhoro. Muri icyo gihe, iyo electrolyte yinjiye muburyo bwo guhuza ibice byo hasi / matrix, molekile zamazi zizitwara hamwe na Fe element muri matrix kuri coating / matrix ihuze kugirango ikore firime yoroheje ya oxyde oxyde, ibuza kwinjira muri electrolyte muri matrix kandi byongera agaciro kokurwanya. Iyo materique yambaye ubusa yangiritse amashanyarazi, igice kinini cyimvura yicyatsi kibisi ikorerwa munsi ya electrolyte. Igisubizo cya electrolytike nticyahinduye ibara mugihe electrolyzing icyitegererezo cyashizweho, gishobora kwerekana ko hariho imiti yavuzwe haruguru.
Bitewe nigihe gito cyo gushira hamwe nimpamvu nini zituruka hanze, kugirango turusheho kubona isano nyayo yimpinduka yibipimo byamashanyarazi, isesengura rya Tafel ya 19 h na 19.5 h rirasesengurwa. Ubucucike bwa ruswa hamwe nuburwanya byabonetse muri software isesengura zsimpwin bigaragara mu mbonerahamwe ya 2. Turashobora gusanga iyo ushizemo amasaha 19 h, ugereranije nubutaka bwambaye ubusa, ubwinshi bwangirika bwa alumina yera na alumina ikomatanya irimo ibikoresho byongeramo nano ni bito kandi agaciro ko kurwanya ni nini. Agaciro ko kurwanya ceramic ceramic karubone ya karubone hamwe na coating irimo graphene ni kimwe, mugihe imiterere yo gutwikisha hamwe na karubone nanotubes hamwe nibikoresho bya graphene byongerewe imbaraga cyane, Ibi ni ukubera ko ingaruka ziterwa na carbone nanotubes imwe na graphene-ebyiri zitezimbere kwangirika kwibintu.
Hamwe no kwiyongera kwigihe cyo kwibiza (19.5 h), kurwanya substrate yambaye ubusa biriyongera, byerekana ko biri mubyiciro bya kabiri byo kwangirika kandi firime ya okiside yicyuma ikorerwa hejuru yubutaka. Mu buryo nk'ubwo, hamwe no kwiyongera kwigihe, kurwanya ubukana bwa alumina ceramic ceramic nabwo biriyongera, byerekana ko muri iki gihe, nubwo hari ingaruka zidindiza zo gutwikira ceramique, electrolyte yinjiye muburyo bwo guhuza / matrike, kandi ikora firime ya okiside ikoresheje imiti.
Ugereranije na alumina yatwikiriye irimo 0.2% mwnt-cooh-sdbs, igipande cya alumina kirimo 0.2% graphene hamwe na alumina ikingira 0,2% mwnt-cooh-sdbs na 0.2% graphene, kurwanya impuzu byagabanutse cyane hamwe no kwiyongera kwigihe, byagabanutseho 22.94%, 25.60% na 9.61%, byerekana ko bitigeze byinjira muri electroly. Ni ukubera ko imiterere ya karubone nanotubes na graphene ibuza kwinjira munsi ya electrolyte, bityo ikarinda matrix. Ingaruka yo guhuza byombi irasuzumwa neza. Igifuniko kirimo ibikoresho bibiri bya nano bifite uburyo bwiza bwo kurwanya ruswa.
Binyuze mu murongo wa Tafel no guhindura umurongo w’agaciro k’umuriro w’amashanyarazi, usanga ko alumina ceramic itwikiriwe na graphene, carbone nanotubes hamwe nuruvange rwabo bishobora kunoza kwangirika kwangirika kwa matrice yicyuma, kandi ingaruka zoguhuza zombi zirashobora kurushaho kunoza kwangirika kwangirika kwububiko bwa ceramic. Kugirango turusheho gucukumbura ingaruka zinyongeramusaruro za nano kumurwanya wo kwangirika kwifuniko, mikorobe ya mikorobe yubutaka nyuma yo kwangirika.
Tanga
Igicapo 5 (A1, A2, B1, B2) cerekana morfologiya yubuso bwerekanwe 304 ibyuma bitagira umwanda hamwe nubutaka bwiza bwa alumina ceramique mugukuza gutandukanye nyuma yo kwangirika. Igishushanyo 5 (A2) cyerekana ko ubuso nyuma yo kwangirika buba bubi. Kuri substrate yambaye ubusa, ibyobo byinshi binini byangirika bigaragara hejuru nyuma yo kwibizwa muri electrolyte, byerekana ko kurwanya ruswa kwangirika kwicyuma cyambaye ubusa ari bibi kandi electrolyte yoroshye kwinjira muri matrise. Kubitwikiriye neza bya alumina ceramic, nkuko bigaragara ku gishushanyo cya 5 (B2), nubwo imiyoboro yangirika itangwa nyuma yo kwangirika, imiterere igereranije kandi irwanya ruswa nziza ya alumina ceramic ceramic ihagarika neza igitero cya electrolyte, isobanura impamvu yo kunoza neza inzitizi ziterwa na alumina ceramic.
Tanga
Ubuso bwimiterere ya mwnt-cooh-sdbs, ibifuniko birimo graphene 0.2% hamwe nigitambara kirimo 0.2% mwnt-cooh-sdbs na 0.2% graphene. Birashobora kugaragara ko ibifuniko bibiri birimo graphene ku gishushanyo cya 6 (B2 na C2) bifite imiterere iringaniye, guhuza ibice biri mu gipfukisho birakomeye, kandi ibice byose byegeranijwe bifatanye neza. Nubwo ubuso bwangirika na electrolyte, imiyoboro mike ya pore irashingwa. Nyuma yo kwangirika, ubuso butwikiriye ni bwinshi kandi hariho inenge nke. Ku gishushanyo cya 6 (A1, A2), bitewe nibiranga mwnt-cooh-sdbs, igifuniko mbere yo kwangirika nikintu kimwe cyagabanijwe kimwe. Nyuma yo kwangirika, imyenge yigice cyambere iba ndende kandi ndende, kandi umuyoboro uba mwinshi. Ugereranije n’ishusho ya 6 (B2, C2), imiterere ifite inenge nyinshi, ibyo bikaba bihuye nubunini bwogukwirakwiza agaciro katewe no gupima ikizamini cya ruswa. Irerekana ko igipande cya alumina ceramic kirimo graphene, cyane cyane imvange ya graphene na carbone nanotube, ifite imbaraga zo kurwanya ruswa. Ni ukubera ko imiterere ya karubone nanotube na graphene bishobora guhagarika neza ikwirakwizwa no kurinda matrix.
5. Ikiganiro n'incamake
Binyuze mu kizamini cyo kurwanya ruswa ya karubone nanotubes hamwe ninyongera ya graphene kuri alumina ceramic ceramic hamwe nisesengura rya microstructure yo hejuru yububiko, hafashwe imyanzuro ikurikira:
. Ugereranije na alumina ceramic ceramic yuzuye, igiteranyo cya graphene na karubone nanotube ifite imbaraga zo kurwanya ruswa.
. Inzitizi y'amashanyarazi ibanza kugabanuka hanyuma ikiyongera, kandi kurwanya ruswa ya alumina ceramic ceramic ikennye. Imiterere nubusabane bwa karubone nanotubes na graphene byahagaritse kwinjira munsi ya electrolyte. Iyo ushizemo 19.5 h, inzitizi zamashanyarazi zipfundikizo zirimo ibikoresho bya nano zagabanutseho 22,94%, 25.60% na 9.61%, kandi kurwanya ruswa kwangirika kwari byiza.
6. Uburyo bwo guhindura uburyo bwo kurwanya ruswa
Binyuze mu murongo wa Tafel no guhindura umurongo w’agaciro k’umuriro w’amashanyarazi, usanga ko alumina ceramic itwikiriwe na graphene, carbone nanotubes hamwe nuruvange rwabo bishobora kunoza kwangirika kwangirika kwa matrice yicyuma, kandi ingaruka zoguhuza zombi zirashobora kurushaho kunoza kwangirika kwangirika kwububiko bwa ceramic. Kugirango turusheho gucukumbura ingaruka zinyongeramusaruro za nano kumurwanya wo kwangirika kwifuniko, mikorobe ya mikorobe yubutaka nyuma yo kwangirika.
Igicapo 5 (A1, A2, B1, B2) cerekana morfologiya yubuso bwerekanwe 304 ibyuma bitagira umwanda hamwe nubutaka bwiza bwa alumina ceramique mugukuza gutandukanye nyuma yo kwangirika. Igishushanyo 5 (A2) cyerekana ko ubuso nyuma yo kwangirika buba bubi. Kuri substrate yambaye ubusa, ibyobo byinshi binini byangirika bigaragara hejuru nyuma yo kwibizwa muri electrolyte, byerekana ko kurwanya ruswa kwangirika kwicyuma cyambaye ubusa ari bibi kandi electrolyte yoroshye kwinjira muri matrise. Kubitwikiriye neza bya alumina ceramic, nkuko bigaragara ku gishushanyo cya 5 (B2), nubwo imiyoboro yangirika itangwa nyuma yo kwangirika, imiterere igereranije kandi irwanya ruswa nziza ya alumina ceramic ceramic ihagarika neza igitero cya electrolyte, isobanura impamvu yo kunoza neza inzitizi ziterwa na alumina ceramic.
Ubuso bwimiterere ya mwnt-cooh-sdbs, ibifuniko birimo graphene 0.2% hamwe nigitambara kirimo 0.2% mwnt-cooh-sdbs na 0.2% graphene. Birashobora kugaragara ko ibifuniko bibiri birimo graphene ku gishushanyo cya 6 (B2 na C2) bifite imiterere iringaniye, guhuza ibice biri mu gipfukisho birakomeye, kandi ibice byose byegeranijwe bifatanye neza. Nubwo ubuso bwangirika na electrolyte, imiyoboro mike ya pore irashingwa. Nyuma yo kwangirika, ubuso butwikiriye ni bwinshi kandi hariho inenge nke. Ku gishushanyo cya 6 (A1, A2), bitewe nibiranga mwnt-cooh-sdbs, igifuniko mbere yo kwangirika nikintu kimwe cyagabanijwe kimwe. Nyuma yo kwangirika, imyenge yigice cyambere iba ndende kandi ndende, kandi umuyoboro uba mwinshi. Ugereranije n’ishusho ya 6 (B2, C2), imiterere ifite inenge nyinshi, ibyo bikaba bihuye nubunini bwogukwirakwiza agaciro katewe no gupima ikizamini cya ruswa. Irerekana ko igipande cya alumina ceramic kirimo graphene, cyane cyane imvange ya graphene na carbone nanotube, ifite imbaraga zo kurwanya ruswa. Ni ukubera ko imiterere ya karubone nanotube na graphene bishobora guhagarika neza ikwirakwizwa no kurinda matrix.
7. Ikiganiro nincamake
Binyuze mu kizamini cyo kurwanya ruswa ya karubone nanotubes hamwe ninyongera ya graphene kuri alumina ceramic ceramic hamwe nisesengura rya microstructure yo hejuru yububiko, hafashwe imyanzuro ikurikira:
. Ugereranije na alumina ceramic ceramic yuzuye, igiteranyo cya graphene na karubone nanotube ifite imbaraga zo kurwanya ruswa.
. Inzitizi y'amashanyarazi ibanza kugabanuka hanyuma ikiyongera, kandi kurwanya ruswa ya alumina ceramic ceramic ikennye. Imiterere nubusabane bwa karubone nanotubes na graphene byahagaritse kwinjira munsi ya electrolyte. Iyo ushizemo 19.5 h, inzitizi zamashanyarazi zipfundikizo zirimo ibikoresho bya nano zagabanutseho 22,94%, 25.60% na 9.61%, kandi kurwanya ruswa kwangirika kwari byiza.
. Nyuma yo kwangirika, imyenge yigice cyambere iba ndende kandi ndende, kandi imiyoboro iba ndende. Igipfundikizo kirimo graphene gifite imiterere iringaniye mbere yo kwangirika, guhuza ibice bigize igifuniko biregeranye, kandi ibice byose byegeranijwe bifunze neza. Nubwo ubuso bwangirika na electrolyte nyuma yo kwangirika, hariho imiyoboro mike ya pore kandi imiterere iracyari mwinshi. Imiterere ya karubone nanotubes na graphene irashobora guhagarika neza ikwirakwizwa ryimyanya no kurinda matrix.
Igihe cyo kohereza: Werurwe-09-2022