Igishushanyo cya Grafiti bipolarni igice cy'ingenzi gikoreshwa mu bikoresho bya elegitoroniki nka za selile za lisansi na electrolyzer, ubusanzwe bikozwe mu bikoresho bya grafiti ifite isuku nyinshi. Igira uruhare runini mu bikorwa bya elegitoroniki, ahanini bikoreshwa mu gukora umuvuduko w'amashanyarazi, gukwirakwiza imyuka ya reaction (nka hydrogen na ogisijeni), no gutandukanya ahantu ha reaction. Kubera ko impande zayo ebyiri zikorana na anode na cathode by'uturemangingo twihariye, bigatuma habaho imiterere ya "bipolaire" (uruhande rumwe ni umurima w'amazi ya anode n'urundi ruhande ni umurima w'amazi ya cathode), yitwa bipolar plate.
Imiterere ya graphite bipolar plate
Ubusanzwe, plaque za grafiti bipolar zigizwe n'ibi bikurikira:
1. Aho amazi anyura: Ubuso bw'agace k'umwuka gahindagurika bwubatswe mu buryo bugoye kugira ngo gakwirakwize neza umwuka utera imbaraga (nk'ingufu za hydrogen, ogisijeni cyangwa umwuka) kandi gasohore amazi yakozwe.
2. Icyiciro cy'umuyoboro w'amashanyarazi: Ibikoresho bya grafiti ubwabyo bifite ubushobozi bwo gutwara umuriro neza kandi bishobora gutwara umuriro neza.
3. Ahantu ho gufunga: Impande z'ibice by'umwuka bihindagurika akenshi ziba zifite imiterere ifunga kugira ngo hirindwe ko umwuka usohoka cyangwa amazi yinjira.
4. Imiyoboro ikonjesha (ni ngombwa): Mu bikorwa bimwe na bimwe bitanga umusaruro mwinshi, imiyoboro yo gukonjesha ishobora gutegurwa imbere mu byuma bipolar kugira ngo igenzure ubushyuhe bw'imikorere y'ibikoresho.
Imikorere y'ibice bya graphite bipolar
1. Imikorere yo kuyobora:
Nk'amashanyarazi y'ibikoresho bya elegitoroniki, icyuma gipima umwuka gitanga ingufu z'amashanyarazi gifite inshingano zo gukusanya no kuyobora ingufu z'amashanyarazi kugira ngo ingufu z'amashanyarazi zikore neza.
2. Ikwirakwizwa rya gazi:
Binyuze mu gushushanya umuyoboro w'amazi, plaque ya bipolar ikwirakwiza neza umwuka w'irangizwa ry'ibyuka ku gice cya katalyst, bigatuma habaho ihinduka ry'amashanyarazi.
3. Gutandukanya uturere tw’ingaruka:
Mu cyuma gikoresha lisansi cyangwa electrolyzer, ibipimo bya bipolar bitandukanya agace ka anode na cathode, bikabuza imyuka kwivanga.
4. Gusesa ubushyuhe no gusohora amazi:
Ibikoresho bya Bipolar bifasha mu kugena ubushyuhe bw'imikorere y'ibikoresho no gusohora amazi cyangwa ibindi bikomoka kuri ibyo bisubizo.
5. Inkunga ya mekanike:
Ibipande bya Bipolar bitanga inkunga y'imiterere ya electrode ya membrane, bishimangira ko ibikoresho bihamye kandi biramba.
Kuki wahitamo grafiti nk'ibikoresho bya bipolar plate?
Imiterere y'ibikoresho bya graphite bipolar plates
●Ubushobozi bwo gutwara amashanyarazi buri hejuru:
Ubushobozi bwo kurwanya grafiti mu bwinshi buri hagati ya 10-15μΩ.cm (buruta 100-200 μΩ·cm yaisahani y'icyuma ihindura imiterere y'ibintu bihindagurika).
●Ubudahangarwa bw'inkongi:
Nta ingese igaragara mu bidukikije bya aside mu turemangingo twa lisansi (pH 2-3), kandi ubuzima bwo gukora bushobora kugera ku masaha arenga 20.000.
●Yoroheje:
Ubucucike ni hafi 1.8 g/cm3 (7-8 g/cm3 ku gikoresho cy'icyuma cya bipolar plate), ibi bikaba ari ingirakamaro mu kugabanya ibiro mu modoka.
●Umutungo w'imbogamizi za gazi:
Imiterere y'ubucucike bwa grafiti ishobora gukumira byimazeyo kwinjira kwa hydrogen kandi ifite umutekano mwinshi.
●Gutunganya byoroshye:
Ibikoresho bya grafiti biroroshye gutunganya kandi bishobora guhindura imiterere y’imiyoboro y’amazi n’ingano zayo bitewe n’ibikenewe.
Ni gute ibyuma bya graphite bipolar plates bikorwa?
Uburyo bwo gukoraicyuma gipima ubushyuhe cya grafitiirimo ibi bikurikira:
●Gutegura ibikoresho fatizo:
Koresha grafiti karemano ifite ubuziranenge bwinshi (>99.9%) cyangwa ifu ya grafiti y'ubukorano.
Ongeraho resin (nk'iy'imvange) nk'ikintu gifata kugira ngo wongere imbaraga za mekanike.
●Gutunganya Igitutu:
Ibikoresho bivanze bishyirwa mu ibumba hanyuma bigashyirwa ku bushyuhe buri hejuru (200-300℃) n'umuvuduko uri hejuru (>100 MPa).
●Uburyo bwo kuvura imiterere ya grafiti:
Gushyushya kugeza kuri 2500-3000°C mu kirere kidashyushye bituma ibintu bitari karuboni bihindagurika bigahinduka imiterere ya grafiti nyinshi.
●Gutunganya umukino:
Koresha imashini za CNC cyangwa lasers kugira ngo ucukure imiyoboro y'inzoka, imiyoboro iteganye cyangwa ihuza imiyoboro (ubujyakuzimu bwa mm 0.5-1).
●Uburyo bwo kuvura ubuso:
Gutera irangi rya resin cyangwa icyuma (nk'izahabu, titaniyumu) bigabanya ubushobozi bwo gukoraho kandi bikongera ubushobozi bwo kudasaza.
Ni izihe ngamba za grafiti bipolar plates zikoreshwa?
1. Imodoka ya lisansi:
- Seli y'amavuta ya porotoni ihinduranya porotoni (PEMFC)
- Seli ya lisansi ya okiside ikomeye (SOFC)
- Seli ya lisansi ya Methanol itaziguye (DMFC)
2. Electrolyzer:
- Ikorwa rya hydrogen hakoreshejwe electrolysis y'amazi
- Inganda za Chlor-alkali
3. Sisitemu yo kubika ingufu:
- Bateri y'amazi
4. Inganda zikora imiti:
- Reactor y'amashanyarazi
5. Ubushakashatsi bwa laboratwari:
- Guteza imbere no gupima utunyangingo twa lisansi na electrolyzers
Shyira mu ncamake
Ibice bya grafiti bihindagurikani ibice by'ingenzi by'ibikoresho by'amashanyarazi nka za selile za lisansi na electrolyzer, kandi bifite imirimo myinshi nko gutwara ibintu, gukwirakwiza gaze, no gutandukanya ahantu hakora ibikorwa. Bitewe n'iterambere ry'ikoranabuhanga ry'ingufu zisukuye, plaque za grafiti bipolar zikoreshwa cyane mu binyabiziga bishya bitanga ingufu, uburyo bwo kubika ingufu, gukora hydrogen ya shimi n'ibindi bikorwa.
Igihe cyo kohereza: Werurwe-31-2025