Iyini ipuleti le-graphite bipolar?

I-graphite bipolar plateiyingxenye eyinhloko esetshenziswa emishinini kagesi ye-electrochemical njengamaseli kaphethiloli nama-electrolyzer, ngokuvamile enziwe ngezinto ezihlanzekile zegraphite. Idlala indima ebalulekile ekuphenduleni kwe-electrochemical, ikakhulukazi esetshenziselwa ukuqhuba amanje, ukusabalalisa amagesi okusabela (njenge-hydrogen nomoya-mpilo), kanye nezindawo zokusabela ezihlukene. Ngenxa yokuthi izinhlangothi zayo ezimbili zithinta i-anode kanye ne-cathode yamangqamuzana angashadile aseduze, akha isakhiwo "se-bipolar" (olunye uhlangothi luyinkundla yokugeleza kwe-anode kanti olunye uhlangothi yinkundla yokugeleza kwe-cathode), ibizwa ngokuthi ipuleti le-bipolar.

Isakhiwo se-graphite bipolar plate

Amapuleti e-graphite bipolar ngokuvamile aqukethe izingxenye ezilandelayo:
1. Flow Field: Ingaphezulu lepuleti le-bipolar liklanywe ngesakhiwo senkundla yokugeleza eyinkimbinkimbi ukuze kusatshalaliswe ngokulinganayo igesi yokusabela (njenge-hydrogen, umoya-mpilo noma umoya) nokukhipha amanzi akhiqiziwe.

2. Isendlalelo se-conductive: Izinto ze-graphite ngokwazo zinokusebenza okuhle futhi zingaqhuba zamanje kahle.

3. Indawo yokubeka uphawu: Amaphethelo amapuleti e-bipolar ngokuvamile aklanywa ngezakhiwo zokuvala ukuvimbela ukuvuza kwegesi kanye nokungena koketshezi.

4. Iziteshi zokupholisa (uma uthanda): Kwezinye izinhlelo zokusebenza ezisebenza kahle kakhulu, amashaneli okupholisa angase aklanywe ngaphakathi kwamapuleti e-bipolar ukuze alawule izinga lokushisa lokusebenza kwezisetshenziswa.

Imisebenzi yamapuleti e-graphite bipolar

1. Umsebenzi wokuqhuba:

Njenge-electrode yemishini ye-electrochemical, ipuleti le-bipolar linesibopho sokuqoqa kanye nokuqhuba ukusebenza kwamanje ukuze kuqinisekiswe ukuphuma okusebenzayo kwamandla kagesi.
2. Ukusatshalaliswa kwegesi:

Ngokuklanywa kwesiteshi sokugeleza, ipuleti le-bipolar lisabalalisa igesi yokusabela ngokulinganayo kungqimba lwe-catalyst, iphromotha ukusabela kwe-electrochemical.
3. Ihlukanisa izindawo zokusabela:

Ku-fuel cell noma i-electrolyzer, amapuleti e-bipolar ahlukanisa izindawo ze-anode ne-cathode, avimbele amagesi ukuthi angaxubani.
4. Ukukhipha ukushisa kanye nokukhipha amanzi:

Amapuleti e-bipolar asiza ukulawula izinga lokushisa lokusebenza kwesisetshenziswa futhi akhiphe amanzi noma eminye imikhiqizo ekhiqizwa ukusabela.
5. Ukwesekwa kwemishini:

Amapuleti e-bipolar ahlinzeka ngokusekela kwesakhiwo se-electrode ye-membrane, eqinisekisa ukuzinza nokuqina kwemishini.

Kungani ukhetha i-graphite njengento ye-bipolar plate?

Izinto ezibonakalayo zamapuleti e-graphite bipolar
●I-conductivity ephezulu:

Ukumelana ngobuningi kwegraphite kuphansi njengo-10-15μΩ.cm (ngcono kuno-100-200 μΩ·cm weipuleti yensimbi ye-bipolar).

●Ukumelana nokugqwala:

Cishe akukho ukugqwala endaweni ene-acidic yamangqamuzana kaphethiloli (pH 2-3), futhi impilo yesevisi ingafinyelela amahora angaphezu kuka-20,000 .

●Okungasindi:

Ukuminyana kucishe kube ngu-1.8 g/cm3 (7-8 g/cm3 kupuleti lensimbi le-bipolar), okunenzuzo ekwehliseni isisindo ezinhlelweni zemoto.

●Impahla yokuvimbela igesi:

Isakhiwo esiminyene se-graphite singavimbela ngempumelelo ukungena kwe-hydrogen futhi inokuphepha okuphezulu.

●Ukucubungula okulula:

Izinto ze-graphite kulula ukuzicubungula futhi zingenza ngendlela oyifisayo imiklamo namasayizi wesiteshi esigelezayo ngokwezidingo.

Akhiwa kanjani amapuleti e-graphite bipolar?

Inqubo yokukhiqiza yeI-graphite bipolar platekuhlanganisa okulandelayo:
●Ukulungiswa kwezinto ezingavuthiwe:

Sebenzisa ukuhlanzeka okuphezulu (>99.9%) i-graphite yemvelo noma i-graphite powder yokwenziwa.

Engeza i-resin (njenge-phenolic resin) njenge-binder ukuze uthuthukise amandla okusebenza.

●I-Compression Molding:

Izinto ezixutshiwe zijova esikhunjeni bese kucindezela ngaphansi kwezinga lokushisa eliphezulu (200-300 ℃) kanye nokucindezela okuphezulu (>100 MPa).

●Ukwelashwa kwe-Graphitization:

Ukushisisa kufika ku-2500-3000℃ emkhathini ongenayo kubangela izakhi ezingezona ikhabhoni ukuthi ziguquke futhi zakhe isakhiwo esiminyene segraphite.

●Ukucutshungulwa komgijimi:

Sebenzisa imishini ye-CNC noma amalaser ukuze uqophe amashaneli enyoka, ahambisanayo noma ahlanganayo (ukujula okungu-0.5-1 mm).

●Ukwelashwa kwendawo:

Ukumilela nge-resin noma insimbi (okufana negolide, i-titanium) kunciphisa ukumelana nokuxhumana futhi kuthuthukisa ukumelana nokugqoka.

Yiziphi izinhlelo zokusebenza ze-graphite bipolar plate?

1. I-Fuel Cell:

- I-Proton exchange membrane fuel cell (PEMFC)

- I-Solid Oxide Fuel Cell (SOFC)

- I-Direct Methanol Fuel Cell (DMFC)

2. Electrolyzer:

- Ukukhiqizwa kwe-hydrogen nge-electrolysis yamanzi

- Imboni ye-Chlor-alkali

3. Uhlelo lokugcina amandla:

- Ibhethri eligelezayo

4. Imboni Yamakhemikhali:

- Electrochemical Reactor

5. Ucwaningo lwaselabhorethri:

- Ukuthuthukiswa kwe-prototype nokuhlolwa kwamaseli kaphethiloli nama-electrolyzers

Fingqa

I-graphite bipolar plateziyizingxenye ezibalulekile zemishini ye-electrochemical njengamaseli kaphethiloli nama-electrolyzer, futhi anemisebenzi eminingi efana ne-conductivity, ukusatshalaliswa kwegesi, nokuhlukaniswa kwezindawo zokusabela. Ngokuthuthukiswa kobuchwepheshe bamandla ahlanzekile, amapuleti e-graphite bipolar asetshenziswa kakhulu ezimotweni zamandla amasha, izinhlelo zokugcina amandla, ukukhiqizwa kwamakhemikhali e-hydrogen neminye imikhakha.