He aha ke kumu o ka hydrogen wahie kaʻa?

He ʻano mea hana mana, hoʻololi i ka ikehu kemika i loko o ka wahie i ka ikehu uila ma o ka redox reaction o ka oxygen a i ʻole nā ​​oxidants ʻē aʻe. ʻO ka wahie maʻamau ka hydrogen, hiki ke hoʻomaopopo ʻia ʻo ia ka hopena hope o ka electrolysis wai i ka hydrogen a me ka oxygen.

ʻAʻole e like me ka rocket, ʻaʻole hoʻohua ʻia ka ikehu kinetic ma o ka hopena ikaika o ka hydrogen a me ka oxygen combustion, akā hoʻokuʻu ʻo Gibbs i ka ikehu manuahi i ka hydrogen ma o ka mea catalytic. ʻO kāna kumu hana, ua hoʻoheheʻe ʻia ka hydrogen i loko o nā electrons a me nā ion hydrogen (protons) ma o ka catalyst (maʻamau ka platinum) i loko o ka electrode maikaʻi o kahi pahu wahie. Hiki i nā protons i ka electrode maikaʻi ʻole ma o ka membrane hoʻololi proton a hana me ka oxygen e hana i ka wai a me ka wela. Holo nā electrons pili mai ka electrode maikaʻi i ka electrode ʻino ma o ke kaapuni waho e hoʻoulu i ka ikehu uila. ʻAʻole ia he bottleneck thermal e pili ana i ka 40% no ka mīkini wahie, a hiki ke maʻalahi ka pono o ka wahie hydrogen ma mua o 60%.

I kekahi mau makahiki i hala aku nei, ua ʻike ʻia ka ikehu hydrogen ma ke ʻano he "ʻano hope" o nā kaʻa ikehu hou ma muli o kāna mau pono o ka pollution ʻole, ka ikehu hou, ka hydrogenation wikiwiki, ka laulā piha a pēlā aku. Eia nō naʻe, ʻoi aku ka maikaʻi o ka ʻenehana ʻenehana o ka hydrogen fuel cell, akā ke hoʻi hope nei ka holomua ʻoihana. ʻO kekahi o nā luʻi nui o kāna hoʻolaha ʻana ʻo ia ka hoʻokele kumukūʻai. ʻAʻole kēia wale ke kumukūʻai o ke kaʻa ponoʻī, akā ʻo ke kumukūʻai o ka hana hydrogen a me ka mālama ʻana.

ʻO ka hoʻomohala ʻana o nā kaʻa wahie hydrogen e pili ana i ke kūkulu ʻana i nā ʻenehana wahie hydrogen e like me ka hana hydrogen, ka mālama hydrogen, ka lawe ʻana i ka hydrogen a me ka hydrogenation. ʻAʻole like me nā trams maʻemaʻe, hiki ke hoʻopiʻi lohi ʻia ma ka home a i ʻole ka hui, hiki ke hoʻopaʻa ʻia nā kaʻa hydrogen ma ke kahua hydrogenation, no laila ʻoi aku ka wikiwiki o ke koi ʻana i ke kikowaena. Me ka ʻole o kahi pūnaewele hydrogenation piha, hiki ʻole ke kūkulu ʻana i ka ʻoihana kaʻa hydrogen.