Uburyo Graphite Felt ikoreshwa mu gupima bateri

Mu rwego rwo kubika ingufu zigezweho, bateri zikoreshwa mu mazi zagiye zigaragara buhoro buhoro nk'igisubizo gishobora kwaguka kandi kirambye, cyane cyane ku bikorwa bidahinduka nko kuringaniza imiyoboro y'amashanyarazi, guhuza ingufu zisubiramo, na sisitemu zo kubika amakuru mu nganda. Mu bikoresho by'ingenzi bigena imikorere n'igihe kirekire cy'izi sisitemu, icyuma cya grafiti kigaragara nk'igice cy'ingenzi - cyane cyane mu miterere ya electrode.

Igikoresho cya grafitini ibikoresho bifite imyenge, bishingiye kuri karuboni bifite ubushobozi bwo gutwara ibintu bwinshi, birwanya imiti, kandi bikagira ubushyuhe burambye. Iyi miterere ituma ikwiriye cyane uburyo bwa bateri zigenda, aho electrolyte z'amazi zinyura mu tunyangingo twa electrochemical mu gihe cyo gutanga no gusohora umuriro. Bitandukanye na bateri zisanzwe aho electrode ziba nto kandi zidahinduka, bateri zigenda zishingira ku kugenda kw'amazi ku buso bwa electrode buri gihe. Graphite felt, bitewe n'urusobe rwayo rwa fibrous n'ubuso bunini, itanga uburyo bwiza bwo kohereza electron no gukora redox.

Muri bateri za vanadium redox flow (VRFBs), ziri mu bwoko bwa kera cyane mu bucuruzi, grafiti felt ikoreshwa cyane kuri electrodes nziza na negative. Ubuso burebure butuma habaho gukorana neza na vanadium ions muri electrolyte, mu gihe guhagarara kw'ibikoresho mu bidukikije bifite aside nyinshi bituma biramba mu gihe cy'ingendo ibihumbi n'ibihumbi. Byongeye kandi, imiterere yayo yoroshye yemerera abahanga mu by'imashini gushushanya cyangwa gukanda felt kugira ngo yongere imbaraga zo gukorana, kugabanya imbaraga zo gukorana imbere, no kunoza imikorere y'amashanyarazi muri rusange.

Gukora icyuma cya grafiti gikunze gukoreshwa mu gutunganya imigozi ya sintetike, nka PAN (polyacrylonitrile), munsi y’ikirere gicungwa, hagakurikiraho uburyo bwo gukoresha ubushyuhe cyangwa imiti. Ubu buryo bwo kuvura nyuma yo gukoresha icyuma burushaho kongera imikorere y’amashanyarazi ku buso, bigatuma habaho ahantu hanini ho gukurura imikorere ya redox. Ubwoko bugezweho bwa graphite felt bushobora kandi gushyirwaho ogiside z’icyuma cyangwa izindi nzego zikora kugira ngo hongerwe uburyo bwo guhitamo, kugabanya igihombo cya polarization, no kwihutisha uburyo bwo gukora.

Akamaro kamwe kagaragara ka grafiti kuruta electrode zikozwe mu byuma cyangwa zishingiye kuri karuboni zikomeye ni uko imiterere yazo y’ibice bitatu. Urusobe rw’ibice bifatanye ntirworohereza gusa gukwirakwiza electrode imwe gusa ahubwo runahanganira ihindagurika rito ry’amazi cyangwa ihindagurika ry’umuvuduko, ibi bikaba bikunze kugaragara mu buryo bunini bwo kubika ingufu. Ibi bifasha kugumana imikorere ihamye y’amashanyarazi ndetse no mu gihe cy’imizigo ihindagurika.

Mu buryo bufatika, icyuma cya grafiti si igice gikoreshwa mu gufunga no gukina. Imikorere yacyo ishingiye cyane ku miterere y'uturemangingo, igipimo cyo gukanda, imiterere ya electrolyte, n'ubushyuhe bw'imikorere. Abahanga mu by'imashini bagomba kuringaniza neza porosity, conductivity, no gukanda iyo bahisemo ibikoresho bikwiye bya icyuma. Ubucucike buke cyane bushobora gutuma habaho igihombo cya ohmic cyiyongera, mu gihe icyuma cya graphite gifite ubucucike bwinshi gishobora kubuza urujya n'uruza rw'amazi no kugabanya umuvuduko w'ubwikorezi bwa ion.

Ubushakashatsi burimo gukorwa burimo gushakisha uburyo bwo gusunika imbibi z'imikorere ya grafiti. Icyerekezo kimwe kirimo guhindura ubuso bwa fibre kugira ngo hatangwe amatsinda y'imikorere atuma habaho imikoranire yihariye ya redox. Ikindi cyibandwaho ni utwuma duvanze duhuza grafiti n'ibindi bikoresho biyobora nk'uduce twa nanotube cyangwa graphene kugira ngo hongerwe imbaraga za mekanike n'uburyo ubuso bukora nta gutakaza ubushobozi bwo kuyobora.

Uko ikoranabuhanga rya bateri rigenda ritera imbere no kwiyongera, uruhare rwa grafiti rushobora kwiyongera cyane. Kuva ku kubika ingufu mu ngo kugeza kuri sisitemu ya megawati, haracyakenewe ibikoresho bikomeye, bidakoreshwa cyane kandi bifite imikorere myiza ya electrode.Igikoresho cya grafiti, hamwe n'uburyo bwihariye bwo guhuza imiterere n'imikorere, iracyari inkingi y'ingenzi y'iri terambere.