pākahi lithium polymer
ʻO ka pākaukau Lithium polymer kahi ʻano o ka pākaukau rechargeable ma kahi kumu liʻiliʻi. He kūpono kēia mau pila no nā polokalamu kelepona e pono ai ma mua o 3 watts akā ʻoi aku ka liʻiliʻi ma mua o 7 watts, e like me nā kamepiula a me nā kelepona paʻa. Ua kapa ʻia nā ʻōlima polimer lithium no ka hui ʻana o nā ion lithium a me nā polymers (kahi mea me nā molelaki nui) i hana i kā lākou hana.
Ua hana ʻia a hana ʻia ka pākaukau lithium polymer e nā mea noiʻi i ka hopena o 1980s. Ua hoʻomohala ʻia ka prototype pākaukau lithium polymer mua ma 1994 no ka hoʻohana ʻana i ka lāʻau lapaʻau, a ma kahi o 10 mau makahiki ma hope o kona hana ʻia ʻana, ua hoʻohana ʻia ma nā satelite a me nā mokulele. Ua hoʻohana ʻia ka pākaukau lithium polymer i nā kelepona paʻalima mai ka makahiki 2004, ʻo ia ka manawa i hoʻopuka ai ʻo Sony i ke kelepona paʻalima mua loa i kūʻai ʻia me ka hoʻohana ʻana i ka pā lithium ion.
He ʻokoʻa nā ʻōlima lithium polymer mai nā ʻona lithium ion no ka mea ʻaʻohe mea hoʻokaʻawale ma waena o nā electrodes maikaʻi a maikaʻi ʻole. ʻO nā polymers i hoʻohana ʻia i loko o kēia mau pila he ʻano like me ka jelly, ʻo ia ke kumu i kapa pinepine ʻia ai lākou i nā cell gel. Loaʻa ka pōmaikaʻi o nā ʻōlima polimer lithium no ka liʻiliʻi o ka ʻike ʻana i ka leaka electrolyte i hoʻohālikelike ʻia me nā ʻano ʻē aʻe o nā pākahi lithium ion no ka mea ʻaʻohe mea hoʻokaʻawale.
Hiki ke pilikia o ka leaka electrolyte me kekahi mau kumu hoʻohālike non-lithium polymer. ʻOiai ua like ke ʻano o ka pākaukau me nā ʻenekini lithium ion ʻē aʻe, ʻokoʻa nā mea i hoʻohana ʻia i loko o ia mea me nā mea o nā ʻona lithium ion maʻamau. ʻO ka wai electrolyte e hoʻopili ai i ka hopena maikaʻi a me ka maikaʻi ʻole i loko o kahi pākaukau lithium ion maʻamau i haku ʻia me ka potassium hydroxide a i ʻole lithium hydroxide, e hoʻopili me ka graphite i ka electrode maikaʻi i ka wā e hoʻouka ai.
ʻO kekahi mea ʻē aʻe o ka pākaukau lithium ion pono he graphite, ma o ka hopena kemika me ka electrolyte e hana ai i kahi paʻa paʻa i kapa ʻia ʻo carbon dioxide pentoxide, e hana ana ma ke ʻano he insulator. I loko o kahi pākahiko lithium polymer, akā, ua haku ʻia ka electrolyte me ka poly(ethylene oxide) a me ka poly(vinylidene fluoride), no laila ʻaʻohe pono o ka graphite a i ʻole kekahi ʻano kalapona ʻē aʻe. ʻO nā polymers nā mea i nui nā molekala, hiki ke pale i ka wela kiʻekiʻe a me kekahi corrosion.
Hāʻawi nā polymers i hoʻohana ʻia i loko o nā ʻeke lithium polymer i nā mea e hoʻomohala ai i ke ʻano like me ka gel ke hoʻohālikelike ʻia me nā ʻano ʻano pākaukau lithium ion. Hoʻokumu ʻia ka electrolyte me kahi mea hoʻoheheʻe organik i hiki ke hana ʻia me ka ʻole o ka lithium, no laila e lilo ia i ʻano pākaukau ʻoi loa ka uku.
Hoʻohana ʻia nā ʻona polimer lithium i nā noi he nui no ka mea hiki ke maʻalahi a hiki ke hoʻomanawanui i nā wela kiʻekiʻe ma mua o nā ʻano ʻē aʻe o nā pākahi lithium ion. Ua emi iho ko lakou kaumaha ma mua o ko lakou mau mua, e hiki ai i ka mea hoʻohana ke hoʻopaʻa i ke kelepona paʻa i ka lōʻihi me ka loaʻa ʻole o ka ʻeha a me ka ʻeha ma ko lākou mau lima lima.
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