Letlapa la graphite bipolar ke eng?

Letlapa la graphite bipolarke karolo ea bohlokoa e sebelisoang lisebelisoa tsa electrochemical tse kang lisele tsa mafura le li-electrolyzer, hangata tse entsoeng ka thepa ea graphite e hloekileng haholo. E bapala karolo ea bohlokoa karabelong ea electrochemical, e sebelisoang haholo ho tsamaisa hajoale, ho aba likhase tse arabelang (joalo ka haedrojene le oksijene), le libaka tse arohaneng tsa karabelo. Hobane mahlakore a eona a mabeli a kopana le anode le cathode ea lisele tse le 'ngoe tse haufi, ho etsa sebopeho sa "bipolar" (lehlakore le leng ke sebaka sa phallo ea anode 'me ka lehlakoreng le leng ke sebaka sa phallo ea cathode), e bitsoa "bipolar plate".

Sebopeho sa poleiti ea graphite bipolar

Hangata lipoleiti tsa graphite bipolar li na le likarolo tse latelang:
1. Tšimo ea Phallo: Bokaholimo ba poleiti ea bipolar e entsoe ka mokhoa o rarahaneng oa tšimo ea phallo ho arola ka mokhoa o ts'oanang khase e arabelang (e kang hydrogen, oksijene kapa moea) le ho ntša metsi a hlahisoang.

2. Lera conductive: Lisebelisoa tsa graphite ka boeona li na le conductivity e ntle 'me li ka tsamaisa hona joale ka katleho.

3. Sebaka sa ho tiisa: Mathoko a lipoleiti tsa bipolar hangata a entsoe ka meaho e tiisang ho thibela ho lutla ha khase le ho kenella ha mokelikeli.

4. Likanale tse pholileng (ka boikhethelo): Lits'ebetsong tse ling tse sebetsang hantle haholo, likanale tsa ho pholisa li ka etsoa ka har'a lipoleiti tsa bipolar ho laola mocheso o sebetsang oa thepa.

Mesebetsi ea lipoleiti tsa graphite bipolar

1. Ts'ebetso ea conductive:

Joaloka electrode ea lisebelisoa tsa electrochemical, poleiti ea bipolar e ikarabella ho bokella le ho tsamaisa hona joale ho netefatsa tlhahiso e ntle ea matla a motlakase.
2. Kabo ea khase:

Ka moralo oa mocha oa phallo, poleiti ea bipolar e tsamaisa ka mokhoa o ts'oanang khase ea karabelo sebakeng sa catalyst, e khothaletsa karabelo ea electrochemical.
3. Ho arola libaka tsa maikutlo:

Ka seleng ea mafura kapa electrolyzer, lipoleiti tsa bipolar li arola libaka tsa anode le cathode, li thibela likhase ho tsoakana.
4. Phallo ea mocheso le drainage:

Lipoleiti tsa bipolar li thusa ho laola mocheso o sebetsang oa lisebelisoa le ho ntša metsi kapa lihlahisoa tse ling tse hlahisoang ke karabelo.
5. Tšehetso ea mechine:

Lipoleiti tsa bipolar li fana ka ts'ehetso ea sebopeho bakeng sa membrane electrode , ho netefatsa botsitso le ho tšoarella ha thepa.

Hobaneng u khetha graphite e le lisebelisoa tsa poleiti ea bipolar?

Lintho tse bonahalang tsa lipoleiti tsa graphite bipolar
●High conductivity:

Bongata bo hanyetsanang le graphite bo tlase joalo ka 10-15μΩ.cm (ho feta 100-200 μΩ·cm eatšepe bipolar plate) .

●Corrosion resistance:

Hoo e ka bang ha ho na kutu sebakeng sa acidic ea lisele tsa mafura (pH 2-3), 'me bophelo ba tšebeletso bo ka fihla lihora tse fetang 20,000 .

●E bobebe:

Density e ka ba 1.8 g/cm3 (7-8 g/cm3 for metal bipolar plate), e leng molemo bakeng sa ho fokotsa boima ba lisebelisoa tsa koloi.

●Thepa e thibelang khase:

Sebopeho se teteaneng sa graphite se ka thibela ho kenella ha haedrojene ka katleho 'me se na le tšireletso e phahameng.

●Ho sebetsa habonolo:

Lisebelisoa tsa graphite li bonolo ho sebetsa 'me li ka iketsetsa meralo e rarahaneng ea liteishene tsa phallo le boholo ho latela litlhoko.

Lipoleiti tsa graphite bipolar li etsoa joang?

Mokhoa oa tlhahiso eapoleiti ea graphite bipolare kenyelletsa tse latelang:
●Ho lokisoa ha lintho tse tala:

Sebelisa bohloeki bo phahameng (> 99.9%) graphite ea tlhaho kapa phofo ea maiketsetso ea graphite.

Kenya resin (joalo ka phenolic resin) joalo ka setlamo ho matlafatsa matla a mochini.

●Compression Molding:

Thepa e tsoakiloeng e kenngoa ka har'a hlobo ebe e hatelloa ka tlas'a mocheso o phahameng (200-300 ℃) le khatello e phahameng (> 100 MPa).

●Phekolo ea Graphitization:

Ho futhumatsa ho fihla ho 2500-3000 ℃ sebakeng se sa sebetseng ho etsa hore likarolo tse seng tsa khabone li fetohe le ho theha sebopeho se teteaneng sa graphite.

●Ts'ebetso ea semathi:

Sebelisa mechini ea CNC kapa li-lasers ho betla likanale tsa noha, tse bapileng kapa tse kopaneng (botebo ba 0.5-1 mm).

●Phekolo ea sefahleho:

Ho kenngoa ka resin kapa tšepe (joalo ka khauta, titanium) ho fokotsa ho hanyetsa ho kopana le ho ntlafatsa ho hanyetsa ho apara.

Lisebelisoa tsa lipoleiti tsa graphite bipolar ke life?

1. Fuel Cell:

- Proton exchange membrane fuel cell (PEMFC)

- Solid Oxide Fuel Cell (SOFC)

- Direct Methanol Fuel Cell (DMFC)

2. Electrolyzer:

- Tlhahiso ea haedrojene ka electrolysis ea metsi

- indasteri ea Chlor-alkali

3. Sistimi ea polokelo ea matla:

- Betri e phallang

4. Indasteri ea Lik'hemik'hale:

- Electrochemical Reactor

5. Patlisiso ea laboratori:

- Ntlafatso ea prototype le tlhahlobo ea lisele tsa mafura le li-electrolyzer

Akaretsa

Lipoleiti tsa graphite bipolarke likarolo tsa mantlha tsa lisebelisoa tsa electrochemical joalo ka lisele tsa mafura le li-electrolyzer, 'me li na le mesebetsi e mengata joalo ka conductivity, kabo ea khase, le karohano ea libaka tsa karabelo. Ka nts'etsopele ea theknoloji e hloekileng ea matla, lipoleiti tsa graphite bipolar li ntse li sebelisoa ka ho eketsehileng likoloing tse ncha tsa matla, mekhoa ea ho boloka matla, tlhahiso ea lik'hemik'hale tsa hydrogen le masimo a mang.