Papa Graphite Papa Kelepona Wahie, Papa bipolar kalapona

ʻO ka mea graphite kahi mea papa bipolar i hoʻomohala ʻia a hoʻohana ʻia ma mua. Hoʻohana nui nā papa bipolar kuʻuna i nā papa graphite non-porous, a hana ʻia nā grooves ma o ka mīkini. He haʻahaʻa ka coefficient hoʻonui thermal o ka papa bipolar graphite, conductivity thermal maikaʻi, nā waiwai kemika paʻa, kūpaʻa corrosion maikaʻi a me ka conductivity uila ikaika. Eia nō naʻe, ʻo ka brittleness o ka graphite ke kumu o nā pilikia hana, a i ka manawa like e kaupalena ana i ka hōʻemi ʻana o ka mānoanoa o ka papa graphite, a he maʻalahi ke hana i nā pores i ka wā o ke kaʻina hana, i hiki ai i ka wahie a me ka oxidant ke komo kekahi i kekahi, no laila pono e hoʻohui ʻia nā mea ʻē aʻe e hoʻomaikaʻi i ka hana pākaukau.

Ua hoʻomohala mākou i nā papa bipolar graphite kūpono no ka PEMFC e koi ana i ka hoʻohana ʻana i nā papa bipolar holomua me ka conductivity uila kiʻekiʻe a me ka ikaika mechanical maikaʻi. ʻAe kā mākou mau papa bipolar i nā cell wahie e hana i nā mahana kiʻekiʻe a loaʻa iā lākou ka conductivity uila a me ka thermal maikaʻi loa.

Hāʻawi mākou i ka mea graphite me ka resin impregnated i mea e hoʻokō ai i ka impermeability gas a me ka ikaika kiʻekiʻe. Akā mālama ka mea i nā waiwai maikaʻi o ka graphite ma ke ʻano o ka conductivity uila kiʻekiʻe a me ka conductivity thermal kiʻekiʻe.

Hiki iā mākou ke mīkini i nā papa bipolar ma nā ʻaoʻao ʻelua me nā kahua kahe, a i ʻole e mīkini i hoʻokahi ʻaoʻao a i ʻole e hāʻawi i nā papa hakahaka i mīkini ʻole ʻia. Hiki ke mīkini ʻia nā papa graphite āpau e like me kāu hoʻolālā kikoʻī.