1. Shirye-shiryen rufewa
Domin sauƙaƙe gwajin lantarki na ƙarshe, an zaɓi ƙarfe mai kauri × 4 mm 304 bakin ƙarfe a matsayin tushe. A goge kuma a cire ragowar layin oxide da tabo na tsatsa a saman substrate ɗin da takarda mai yashi, a saka su a cikin beaker mai ɗauke da acetone, a shafa tabo a saman substrate ɗin da mai tsabtace ultrasonic na kamfanin lantarki na Bangjie na tsawon minti 20, a cire tarkacen da ke kan saman ƙarfe da barasa da ruwan da aka tace, sannan a busar da su da injin hura iska. Sannan, an shirya alumina (Al2O3), graphene da hybrid carbon nanotube (mwnt-coohsdbs) bisa ga rabo (100: 0: 0, 99.8: 0.2: 0, 99.8: 0: 0.2, 99.6: 0.2: 0.2), sannan a saka a cikin injin niƙa ƙwallo (qm-3sp2 na masana'antar kayan aikin Nanjing NANDA) don niƙa ƙwallo da haɗawa. An saita saurin juyawa na injin niƙa ƙwallo zuwa 220 R / min, kuma an juya injin niƙa ƙwallo zuwa
Bayan niƙa ƙwallon, saita saurin juyawar tankin niƙa ƙwallon ya zama 1/2 a jere bayan an gama niƙa ƙwallon, sannan a saita saurin juyawar tankin niƙa ƙwallon ya zama 1/2 a jere bayan an gama niƙa ƙwallon. Ana haɗa tarin yumbu da manne da aka niƙa ƙwallon daidai gwargwado bisa ga ƙashin taro na 1.0 ∶ 0.8. A ƙarshe, an sami rufin yumbu mai manne ta hanyar sarrafa shi.
2. Gwajin lalata
A cikin wannan binciken, gwajin lalata sinadarai na lantarki ya rungumi wurin aiki na Shanghai Chenhua chi660e electrochemical workstation, kuma gwajin ya rungumi tsarin gwajin lantarki guda uku. Elektrodin platinum shine elektrodin taimako, elektrodin azurfa chloride shine elektrodin tunani, kuma samfurin da aka rufe shine elektrodin aiki, tare da ingantaccen yanki na fallasa na 1cm2. Haɗa elektrodin tunani, elektrodin aiki da elektrodin taimako a cikin tantanin lantarki tare da kayan aiki, kamar yadda aka nuna a Figures 1 da 2. Kafin gwajin, jiƙa samfurin a cikin elektrodin, wanda shine maganin NaCl 3.5%.
3. Binciken Tafel na tsatsa ta hanyar amfani da electrochemical na shafi
Hoto na 3 yana nuna lanƙwasa na Tafel na substrate mara rufi da murfin yumbu wanda aka lulluɓe da ƙarin nano daban-daban bayan lalata lantarki na tsawon awanni 19. Bayanan gwajin ƙarfin tsatsa, yawan tsatsa da gwajin juriyar lantarki da aka samu daga gwajin tsatsa na lantarki an nuna su a cikin Jadawali na 1.
Aika
Idan yawan tsatsa ya yi ƙanƙanta kuma ingancin juriyar tsatsa ya fi girma, tasirin juriyar tsatsa na murfin ya fi kyau. Ana iya gani daga Hoto na 3 da tebur na 1 cewa lokacin da lokacin tsatsa ya yi awanni 19, matsakaicin ƙarfin tsatsa na matrix ɗin ƙarfe mara komai shine -0.680 V, kuma yawan tsatsa na matrix shi ma shine mafi girma, yana kaiwa 2.890 × 10-6 A/cm2. Lokacin da aka shafa shi da fenti mai tsabta na alumina, yawan tsatsa na yanzu ya ragu zuwa 78% kuma PE ya kasance 22.01%. Yana nuna cewa rufin yumbu yana taka rawa mafi kyau ta kariya kuma yana iya inganta juriyar tsatsa na murfin a cikin electrolyte mai tsaka tsaki.
Lokacin da aka ƙara 0.2% mwnt-cooh-sdbs ko 0.2% graphene a cikin murfin, yawan tsatsa ya ragu, juriya ta ƙaru, kuma juriyar tsatsa ta ƙara inganta, tare da PE na 38.48% da 40.10% bi da bi. Lokacin da aka shafa saman da 0.2% mwnt-cooh-sdbs da 0.2% graphene gauraye alumina, wutar tsatsa ta ƙara raguwa daga 2.890 × 10-6 A / cm2 ƙasa zuwa 1.536 × 10-6 A / cm2, matsakaicin ƙimar juriya, ya ƙaru daga 11388 Ω zuwa 28079 Ω, kuma PE na murfin zai iya kaiwa 46.85%. Yana nuna cewa samfurin da aka shirya yana da kyakkyawan juriyar tsatsa, kuma tasirin haɗin gwiwa na nanotubes na carbon da graphene na iya inganta juriyar tsatsa na murfin yumbu yadda ya kamata.
4. Tasirin lokacin jiƙawa akan tasirin rufewa
Domin ƙarin bincike kan juriyar tsatsa na murfin, idan aka yi la'akari da tasirin lokacin nutsewa na samfurin a cikin electrolyte akan gwajin, ana samun lanƙwasa masu canzawa na juriya na murfin guda huɗu a lokutan nutsewa daban-daban, kamar yadda aka nuna a Hoto na 4.
Aika
A matakin farko na nutsewa (awa 10), saboda yawan da kuma tsarin murfin, electrolyte yana da wuya a nutse cikin murfin. A wannan lokacin, murfin yumbu yana nuna juriya mai yawa. Bayan jiƙa na ɗan lokaci, juriyar tana raguwa sosai, domin da wucewar lokaci, electrolyte ɗin yana samar da hanyar tsatsa ta cikin ramuka da fashe-fashen murfin kuma yana shiga cikin matrix, wanda ke haifar da raguwar juriyar murfin sosai.
A mataki na biyu, lokacin da samfuran tsatsa suka ƙaru zuwa wani adadi, yaduwar ta toshe kuma gibin yana toshewa a hankali. A lokaci guda, lokacin da electrolyte ya shiga cikin haɗin haɗin Layer / matrix na ƙasan haɗin, ƙwayoyin ruwa za su yi aiki tare da sinadarin Fe a cikin matrix a wurin haɗin shafi / matrix don samar da fim ɗin ƙarfe mai siriri, wanda ke hana shigar electrolyte cikin matrix kuma yana ƙara ƙimar juriya. Lokacin da matrix ɗin ƙarfe mara komai ya lalace ta hanyar lantarki, yawancin ruwan sama mai launin kore ana samar da shi a ƙasan electrolyte. Maganin electrolytic bai canza launi ba lokacin da yake yin amfani da samfurin da aka shafa ta hanyar lantarki, wanda zai iya tabbatar da wanzuwar amsawar sinadarai da ke sama.
Saboda ɗan gajeren lokacin jiƙawa da manyan abubuwan da ke haifar da tasiri a waje, domin a ƙara samun daidaiton canjin sigogin lantarki, ana nazarin lanƙwasa na Tafel na awanni 19 da 19.5. An nuna yawan tsatsa da juriyar da aka samu ta hanyar software na nazarin zsimpwin a cikin Jadawali na 2. Ana iya gano cewa lokacin da aka jiƙa na awanni 19, idan aka kwatanta da substrate mara komai, yawan tsatsa na tsatsa na tsatsar alumina da alumina mai tsarki wanda ke ɗauke da kayan ƙari na nano sun ƙanƙanta kuma ƙimar juriya ta fi girma. Ƙimar juriya na rufin yumbu wanda ke ɗauke da nanotubes na carbon da shafi wanda ke ɗauke da graphene kusan iri ɗaya ne, yayin da tsarin rufi tare da nanotubes na carbon da kayan haɗin graphene yana ƙaruwa sosai. Wannan saboda tasirin haɗin gwiwa na nanotubes na carbon mai girma ɗaya da graphene mai girma biyu yana inganta juriyar tsatsa na kayan.
Tare da ƙaruwar lokacin nutsewa (awanni 19.5), juriyar substrate mai tsirara tana ƙaruwa, wanda ke nuna cewa tana cikin mataki na biyu na tsatsa kuma ana samar da fim ɗin ƙarfe mai ɗauke da sinadarin oxide a saman substrate. Hakazalika, tare da ƙaruwar lokaci, juriyar rufin yumbu na alumina mai tsarki shima yana ƙaruwa, wanda ke nuna cewa a wannan lokacin, kodayake akwai raguwar tasirin rufin yumbu, electrolyte ya shiga mahaɗin haɗin shafi / matrix, kuma ya samar da fim ɗin oxide ta hanyar amsawar sinadarai.
Idan aka kwatanta da murfin alumina wanda ke ɗauke da 0.2% mwnt-cooh-sdbs, murfin alumina wanda ke ɗauke da 0.2% graphene da kuma murfin alumina wanda ke ɗauke da 0.2% mwnt-cooh-sdbs da 0.2% graphene, juriyar rufewa ta ragu sosai tare da ƙaruwar lokaci, ta ragu da 22.94%, 25.60% da 9.61% bi da bi, wanda ke nuna cewa electrolyte bai shiga cikin haɗin da ke tsakanin murfin da substrate a wannan lokacin ba. Wannan ya faru ne saboda tsarin nanotubes na carbon da graphene yana toshe shigar electrolyte ƙasa, don haka yana kare matrix. An ƙara tabbatar da tasirin haɗin gwiwa na biyu. Rufin da ke ɗauke da kayan nano guda biyu yana da juriyar tsatsa.
Ta hanyar lanƙwasa Tafel da kuma canjin lanƙwasa na ƙimar juriyar lantarki, an gano cewa rufin yumbu na alumina tare da graphene, nanotubes na carbon da haɗinsu na iya inganta juriyar tsatsa na matrix na ƙarfe, kuma tasirin haɗin gwiwa na su biyun na iya ƙara inganta juriyar tsatsa na murfin yumbu mai manne. Domin ƙarin bincika tasirin ƙarin nano akan juriyar tsatsa na murfin, an lura da yanayin saman murfin bayan tsatsa.
Aika
Siffa ta 5 (A1, A2, B1, B2) tana nuna yanayin saman ƙarfe mai bakin ƙarfe 304 da aka fallasa da kuma yumbu mai tsarki na alumina a cikin girma daban-daban bayan tsatsa. Siffa ta 5 (A2) ta nuna cewa saman bayan tsatsa ya zama mai kauri. Ga substrate ɗin da ba shi da komai, manyan ramukan tsatsa da yawa suna bayyana a saman bayan nutsewa cikin electrolyte, yana nuna cewa juriyar tsatsa na matrix ɗin ƙarfe mara komai ba shi da kyau kuma electrolyte ɗin yana da sauƙin shiga cikin matrix. Ga rufin yumbu na alumina mai tsarki, kamar yadda aka nuna a Siffa ta 5 (B2), kodayake ana samar da tashoshin tsatsa masu ramuka bayan tsatsa, tsarin da ya yi yawa da kuma kyakkyawan juriyar tsatsa na rufin yumbu na alumina mai tsarki yana toshe mamayewar electrolyte yadda ya kamata, wanda ke bayyana dalilin ingantaccen ingantaccen juriya na rufin yumbu na alumina.
Aika
Tsarin saman mwnt-cooh-sdbs, rufin da ke ɗauke da graphene 0.2% da rufin da ke ɗauke da 0.2% mwnt-cooh-sdbs da graphene 0.2%. Za a iya ganin cewa rufin biyu da ke ɗauke da graphene a Hoto na 6 (B2 da C2) suna da tsari mai faɗi, ɗaure tsakanin barbashi a cikin rufin yana da ƙarfi, kuma an naɗe barbashi masu tarin yawa da manne. Duk da cewa saman yana lalacewa ta hanyar electrolyte, ƙarancin ramukan ramuka suna samuwa. Bayan tsatsa, saman rufin yana da yawa kuma akwai ƙarancin lahani. Ga Hoto na 6 (A1, A2), saboda halayen mwnt-cooh-sdbs, rufin kafin tsatsa tsari ne mai ramuka iri ɗaya. Bayan tsatsa, ramukan asalin ɓangaren suna zama kunkuntar da tsayi, kuma tashar ta yi zurfi. Idan aka kwatanta da Hoto na 6 (B2, C2), tsarin yana da ƙarin lahani, wanda ya yi daidai da girman rarraba ƙimar hana rufi da aka samu daga gwajin lalata lantarki. Yana nuna cewa rufin yumbu na alumina wanda ke ɗauke da graphene, musamman cakuda graphene da carbon nanotube, yana da mafi kyawun juriya ga tsatsa. Wannan saboda tsarin carbon nanotube da graphene na iya toshe yaduwar tsatsa yadda ya kamata da kuma kare matrix.
5. Tattaunawa da taƙaitawa
Ta hanyar gwajin juriyar tsatsa na nanotubes na carbon da ƙarin graphene akan murfin yumbu na alumina da kuma nazarin tsarin saman murfin, an zana ƙarshe mai zuwa:
(1) Lokacin da lokacin tsatsa ya kasance awanni 19, an ƙara kashi 0.2% na carbon nanotubes masu haɗaka + kashi 0.2% na graphene mai gauraye da aka yi da yumbu na alumina, yawan tsatsa ya ƙaru daga 2.890 × 10-6 A / cm2 ƙasa zuwa 1.536 × 10-6 A / cm2, ƙarfin wutar lantarki ya ƙaru daga 11388 Ω zuwa 28079 Ω, kuma ingancin juriyar tsatsa shine mafi girma, 46.85%. Idan aka kwatanta da tsantsar rufin yumbu na alumina, rufin da aka haɗa da graphene da nanotubes na carbon yana da juriyar tsatsa mafi kyau.
(2) Tare da ƙaruwar lokacin nutsewa na electrolyte, electrolyte ɗin yana shiga cikin haɗin murfin / substrate don samar da fim ɗin ƙarfe mai hana ruwa shiga cikin substrate. Da farko juriyar lantarki tana raguwa sannan ta ƙaru, kuma juriyar tsatsa na rufin yumbu na alumina ba ta da kyau. Tsarin da haɗin gwiwar nanotubes na carbon da graphene sun toshe shigar electrolyte ƙasa. Lokacin da aka jiƙa na tsawon awanni 19.5, juriyar lantarki na murfin da ke ɗauke da kayan nano ya ragu da kashi 22.94%, 25.60% da 9.61% bi da bi, kuma juriyar tsatsa na murfin ya yi kyau.
6. Tsarin tasirin juriyar lalata shafi
Ta hanyar lanƙwasa Tafel da kuma canjin lanƙwasa na ƙimar juriyar lantarki, an gano cewa rufin yumbu na alumina tare da graphene, nanotubes na carbon da haɗinsu na iya inganta juriyar tsatsa na matrix na ƙarfe, kuma tasirin haɗin gwiwa na su biyun na iya ƙara inganta juriyar tsatsa na murfin yumbu mai manne. Domin ƙarin bincika tasirin ƙarin nano akan juriyar tsatsa na murfin, an lura da yanayin saman murfin bayan tsatsa.
Siffa ta 5 (A1, A2, B1, B2) tana nuna yanayin saman ƙarfe mai bakin ƙarfe 304 da aka fallasa da kuma yumbu mai tsarki na alumina a cikin girma daban-daban bayan tsatsa. Siffa ta 5 (A2) ta nuna cewa saman bayan tsatsa ya zama mai kauri. Ga substrate ɗin da ba shi da komai, manyan ramukan tsatsa da yawa suna bayyana a saman bayan nutsewa cikin electrolyte, yana nuna cewa juriyar tsatsa na matrix ɗin ƙarfe mara komai ba shi da kyau kuma electrolyte ɗin yana da sauƙin shiga cikin matrix. Ga rufin yumbu na alumina mai tsarki, kamar yadda aka nuna a Siffa ta 5 (B2), kodayake ana samar da tashoshin tsatsa masu ramuka bayan tsatsa, tsarin da ya yi yawa da kuma kyakkyawan juriyar tsatsa na rufin yumbu na alumina mai tsarki yana toshe mamayewar electrolyte yadda ya kamata, wanda ke bayyana dalilin ingantaccen ingantaccen juriya na rufin yumbu na alumina.
Tsarin saman mwnt-cooh-sdbs, rufin da ke ɗauke da graphene 0.2% da rufin da ke ɗauke da 0.2% mwnt-cooh-sdbs da graphene 0.2%. Za a iya ganin cewa rufin biyu da ke ɗauke da graphene a Hoto na 6 (B2 da C2) suna da tsari mai faɗi, ɗaure tsakanin barbashi a cikin rufin yana da ƙarfi, kuma an naɗe barbashi masu tarin yawa da manne. Duk da cewa saman yana lalacewa ta hanyar electrolyte, ƙarancin ramukan ramuka suna samuwa. Bayan tsatsa, saman rufin yana da yawa kuma akwai ƙarancin lahani. Ga Hoto na 6 (A1, A2), saboda halayen mwnt-cooh-sdbs, rufin kafin tsatsa tsari ne mai ramuka iri ɗaya. Bayan tsatsa, ramukan asalin ɓangaren suna zama kunkuntar da tsayi, kuma tashar ta yi zurfi. Idan aka kwatanta da Hoto na 6 (B2, C2), tsarin yana da ƙarin lahani, wanda ya yi daidai da girman rarraba ƙimar hana rufi da aka samu daga gwajin lalata lantarki. Yana nuna cewa rufin yumbu na alumina wanda ke ɗauke da graphene, musamman cakuda graphene da carbon nanotube, yana da mafi kyawun juriya ga tsatsa. Wannan saboda tsarin carbon nanotube da graphene na iya toshe yaduwar tsatsa yadda ya kamata da kuma kare matrix.
7. Tattaunawa da taƙaitawa
Ta hanyar gwajin juriyar tsatsa na nanotubes na carbon da ƙarin graphene akan murfin yumbu na alumina da kuma nazarin tsarin saman murfin, an zana ƙarshe mai zuwa:
(1) Lokacin da lokacin tsatsa ya kasance awanni 19, an ƙara kashi 0.2% na carbon nanotubes masu haɗaka + kashi 0.2% na graphene mai gauraye da aka yi da yumbu na alumina, yawan tsatsa ya ƙaru daga 2.890 × 10-6 A / cm2 ƙasa zuwa 1.536 × 10-6 A / cm2, ƙarfin wutar lantarki ya ƙaru daga 11388 Ω zuwa 28079 Ω, kuma ingancin juriyar tsatsa shine mafi girma, 46.85%. Idan aka kwatanta da tsantsar rufin yumbu na alumina, rufin da aka haɗa da graphene da nanotubes na carbon yana da juriyar tsatsa mafi kyau.
(2) Tare da ƙaruwar lokacin nutsewa na electrolyte, electrolyte ɗin yana shiga cikin haɗin murfin / substrate don samar da fim ɗin ƙarfe mai hana ruwa shiga cikin substrate. Da farko juriyar lantarki tana raguwa sannan ta ƙaru, kuma juriyar tsatsa na rufin yumbu na alumina ba ta da kyau. Tsarin da haɗin gwiwar nanotubes na carbon da graphene sun toshe shigar electrolyte ƙasa. Lokacin da aka jiƙa na tsawon awanni 19.5, juriyar lantarki na murfin da ke ɗauke da kayan nano ya ragu da kashi 22.94%, 25.60% da 9.61% bi da bi, kuma juriyar tsatsa na murfin ya yi kyau.
(3) Saboda halayen bututun carbon nanotubes, murfin da aka ƙara da bututun carbon kawai yana da tsari mai ramuka iri ɗaya kafin tsatsa. Bayan tsatsa, ramukan ɓangaren asali suna zama kunkuntar da tsayi, kuma hanyoyin suna zurfafa. Rufin da ke ɗauke da graphene yana da tsari mai faɗi kafin tsatsa, haɗin da ke tsakanin ƙwayoyin cuta a cikin rufin yana kusa, kuma ƙwayoyin cuta masu tarin yawa suna naɗewa da manne. Duk da cewa saman yana lalacewa ta hanyar electrolyte bayan tsatsa, akwai ƙananan tashoshin ramuka kuma tsarin har yanzu yana da yawa. Tsarin bututun carbon da graphene na iya toshe yaɗuwar tsatsa yadda ya kamata kuma suna kare matrix.
Lokacin Saƙo: Maris-09-2022