Pīpī bipolar graphitehe mea nui i hoʻohana ʻia i nā mea hana electrochemical e like me nā wahie a me nā electrolyzers, maʻamau i hana ʻia me nā mea graphite maʻemaʻe kiʻekiʻe. He kuleana koʻikoʻi ia i nā hopena electrochemical, hoʻohana nui ʻia e alakaʻi i kēia manawa, e puʻunaue i nā kinoea hopena (e like me ka hydrogen a me ka oxygen), a me nā wahi hoʻokaʻawale. Ma muli o kona mau ʻaoʻao ʻelua e pili ana i ka anode a me ka cathode o nā keena hoʻokahi e pili ana, e hana ana i kahi ʻano "bipolar" (ʻo kekahi ʻaoʻao ke kahua kahe anode a ʻo ka ʻaoʻao ʻē aʻe ke kahua kahe cathode), ua kapa ʻia ʻo ia ka papa bipolar.
ʻO ke ʻano o ka graphite bipolar plate
ʻO nā papa bipolar graphite ka mea maʻamau i kēia mau ʻāpana:
1. Kahua Kahe: Ua hoʻolālā ʻia ka ʻili o ka pā bipolar me kahi hoʻolālā kahua kahe paʻakikī e puʻunaue like i ke kinoea hopena (e like me ka hydrogen, oxygen a i ʻole ea) a hoʻokuʻu i ka wai i hana ʻia.
2. Papa alakaʻi: Loaʻa i nā mea graphite ponoʻī ka conductivity maikaʻi a hiki ke hoʻokele pono i kēia manawa.
3. Wahi hoʻopaʻa: Hoʻolālā pinepine ʻia nā ʻaoʻao o nā papa bipolar me nā hale hoʻopaʻa hoʻopaʻa ʻana e pale i ka leakage kinoea a me ke komo ʻana o ka wai.
4. Nā kaha hoʻoluʻu (koho): Ma kekahi mau noi hana kiʻekiʻe, hiki ke hoʻolālā ʻia nā kaha hoʻoluʻu i loko o nā pā bipolar e hoʻoponopono i ka mahana hana o nā mea hana.
Nā hana o nā papa bipolar graphite
1. Conductive hana:
E like me ka electrode o nā lako electrochemical, ʻo ka pā bipolar ke kuleana no ka hōʻiliʻili ʻana a me ke alakaʻi ʻana i kēia manawa e hōʻoia i ka hoʻopuka maikaʻi ʻana o ka ikehu uila.
2. Māhele kinoea:
Ma o ka hoʻolālā ʻana i ke kahawai kahe, hāʻawi like ka pā bipolar i ke kinoea hopena i ka papa catalyst, e paipai ana i ka hopena electrochemical.
3. Hoʻokaʻawale i nā ʻāpana hoʻololi:
I loko o kahi pahu wahie a i ʻole electrolyzer, hoʻokaʻawale nā papa bipolar i nā wahi anode a me nā cathode, e pale ana i nā kinoea mai ka hui ʻana.
4. Heat dissipation and drainage:
Kōkua nā papa bipolar i ka hoʻoponopono ʻana i ka mahana hana o nā mea hana a hoʻokuʻu i ka wai a i ʻole nā huahana ʻē aʻe i hana ʻia e ka hopena.
5. Kākoʻo mīkini:
Hāʻawi nā papa Bipolar i ke kākoʻo kūkulu no ka electrode membrane, e hōʻoia ana i ka paʻa a me ka lōʻihi o nā mea hana.
No ke aha e koho ai i ka graphite ma ke ʻano he papa bipolar?
Nā waiwai waiwai o nā papa bipolar graphite
●Kiʻekiʻe conductivity:
ʻO ka nui o ka resistivity o ka graphite he haʻahaʻa e like me 10-15μΩ.cm (ʻoi aku ka maikaʻi ma mua o 100-200 μΩ·cm ometala bipolar plate).
●ʻO ke kūpaʻa ʻino:
Aneane ʻaʻohe corrosion i loko o ka acidic kaiapuni o nā wahie (pH 2-3), a hiki i ke ola lawelawe ke hiki aku ma mua o 20,000 hola.
●Māmā:
ʻO ka density ma kahi o 1.8 g/cm3 (7-8 g/cm3 no ka pā bipolar metala), he mea maikaʻi ia no ka hōʻemi ʻana i ke kaumaha ma nā noi kaʻa.
●waiwai pale kinoea:
Hiki i ke ʻano o ka graphite ke pale pono i ke komo ʻana o ka hydrogen a he palekana kiʻekiʻe.
●Hana maʻalahi:
He mea maʻalahi ka hana ʻana i nā mea graphite a hiki ke hoʻopilikino i nā hoʻolālā a me nā nui o ke kahawai kahe paʻakikī e like me nā pono.
Pehea e hana ʻia ai nā papa bipolar graphite?
ʻO ke kaʻina hana ographite bipolar plateaia kēia mau mea:
●Ka hoʻomākaukau ʻana i nā mea maka:
E hoʻohana i ka maʻemaʻe kiʻekiʻe (> 99.9%) i ka graphite maoli a i ʻole ka pauka graphite artificial.
Hoʻohui i ka resin (e like me ka resin phenolic) ma ke ʻano he mea hoʻopaʻa e hoʻonui ai i ka ikaika mechanical.
●Hoʻopili ʻia:
Hoʻokomo ʻia ka mea i hui ʻia i loko o kahi molole a kaomi ʻia ma lalo o ka wela kiʻekiʻe (200-300 ℃) a me ke kaomi kiʻekiʻe (> 100 MPa).
●Hoʻoponopono graphitization:
ʻO ka hoʻomehana ʻana i 2500-3000 ℃ i loko o kahi lewa inert e hoʻoneʻe ai nā mea kalapona ʻole a hana i kahi ʻano graphite paʻa.
●Kaʻina holo holo:
E hoʻohana i nā mīkini CNC a i ʻole nā lasers no ke kālai ʻana i nā ala nahesa, kūlike a i ʻole interdigitated (hohonu 0.5-1 mm).
●Lapaʻau ʻili:
ʻO ka impregnation me ka resin a i ʻole ka metala (e like me ke gula, titanium) e hōʻemi i ka pale ʻana i ka pilina a hoʻomaikaʻi i ka pale ʻana i ka lole.
He aha nā mea hoʻohana o nā papa bipolar graphite?
1. Huina wahie:
- ʻO ka hoʻololi ʻana o ka membrane wahie cell (PEMFC)
- Paʻa ʻOxide Fuel Cell (SOFC)
- Pūnaehana wahie Methanol Direct (DMFC)
2. Electrolyzer:
- Hana ʻia ka hydrogen e ka wai electrolysis
- ʻOihana Chlor-alkali
3. Pūnaehana mālama ikehu:
- Kahe pila
4. ʻOihana Kimia:
- Electrochemical Reactor
5. Ke noiʻi noiʻi:
- Hoʻomohala prototype a me ka hoʻāʻo ʻana o nā wahie a me nā electrolyzers
Hōʻuluʻulu
Nā papa bipolar graphiteʻO nā mea nui o nā lako electrochemical e like me nā wahie a me nā electrolyzers, a he nui nā hana e like me ka conductivity, ka hāʻawi kinoea, a me ka hoʻokaʻawale ʻana i nā wahi pane. Me ka hoʻomohala ʻana i ka ʻenehana ikehu maʻemaʻe, hoʻohana nui ʻia nā papa bipolar graphite i nā kaʻa ikehu hou, nā ʻōnaehana mālama ikehu, ka hana hydrogen kemika a me nā māla ʻē aʻe.
Ka manawa hoʻouna: Mar-31-2025