ʻO ka hoʻokumu ʻana i ka pākaukau Lithium-ion

Ka hoʻohui ʻana a me ka hana hou ʻana o ka pā lithium-ion

ʻO kapākaukau lithium-ionʻO ka eletrolyte, ka mea hoʻokaʻawale, ka cathode a me ka anode a me ka hihia.

ʻO ka electrolytei loko o ka pahu lithium-ion hiki ke lilo i gel a i ʻole polymer, a i ʻole ka hui ʻana o ka gel a me ka polymer.

ʻO ka electrolyte i loko o nā pākahi Li-ion e hana ma ke ʻano he ala no ka lawe ʻana i nā ion i loko o ka pā.ʻO ka maʻamau he mau paʻakai lithium a me nā mea hoʻoheheʻe organik.He koʻikoʻi ka electrolyte i ka lawe ʻana i ka ion ma waena o nā electrodes maikaʻi a maikaʻi ʻole o ka pā lithium-ion, e hōʻoia ana e hiki i ka pākaukau ke hoʻokō i ka volta kiʻekiʻe a me ke kiʻekiʻe o ka ikehu kiʻekiʻe.ʻO ka electrolyte ka mea maʻamau i hoʻohui ʻia me nā mea hoʻoheheʻe organik maʻemaʻe kiʻekiʻe, nā paʻakai lithium electrolyte a me nā mea hoʻohui pono i hui pū ʻia ma nā ʻāpana kikoʻī ma lalo o nā kūlana kikoʻī.

ʻO ka mea cathodenā ʻano o ka pākaukau lithium-ion:

• LiCoO2
• Li2MnO3
• LiFePO4
• NCM
• NCA

 Aia nā mea cathode i nā koina ma luna o 30% o ka pākaukau holoʻokoʻa.

ʻO ka anodeo ka pahu lithium-ion aia

A laila aia ka anode o ka pā lithium-ion ma kahi o 5-10 pakeneka o ka pākēneka holoʻokoʻa.ʻO nā mea anode e pili ana i ka carbon he mea anode maʻamau no nā pā lithium-ion.Ke hoʻohālikelike ʻia me ka anode lithium metala kahiko, ʻoi aku ka kiʻekiʻe o ka palekana a me ke kūpaʻa.Loaʻa nā mea anode carbon-based mai ka graphite kūlohelohe a me ka mea hana, carbon fiber a me nā mea ʻē aʻe.I waena o lākou, ʻo ka graphite ka mea nui, nona ka ʻāpana kikoʻī kikoʻī kiʻekiʻe a me ka conductivity uila, a ʻo nā mea kalapona i loaʻa ka paʻa kemika maikaʻi a me ka recyclability.Eia nō naʻe, ʻoi aku ka haʻahaʻa o ka mana o ka carbon-based negative electrode material, ʻaʻole hiki ke hoʻokō i nā koi o kekahi mau noi no ka hiki ke kiʻekiʻe.No laila, aia kekahi mau noiʻi e pili ana i nā mea kalapona hou a me nā mea i hoʻohui ʻia, me ka manaʻo e hoʻomaikaʻi hou i ka hiki a me ke ola pōʻai o nā mea electrode maikaʻi ʻole.

Loaʻa iā ia nā mea electrode negtive silicon-carbon.Mea Silika (Si): Hoʻohālikelike ʻia me nā electrodes kalapona ʻino maʻamau, ʻoi aku ka nui o ka mana kikoʻī a me ka nui o ka ikehu.Eia nō naʻe, ma muli o ka nui o ka hoʻonui nui ʻana o ka mea silika, maʻalahi ka hoʻonui ʻana i ka leo o ka electrode, a laila pōkole ke ola o ka pā.

ʻO ka mea hoʻokaʻawaleʻO ka pākaukau lithium-ion kahi mea nui e hōʻoia i ka hana a me ka palekana.ʻO ka hana nui o ka mea hoʻokaʻawale ke hoʻokaʻawale i nā electrodes maikaʻi a maikaʻi ʻole, a i ka manawa like, hiki iā ia ke hana i kahi ala no ka neʻe ʻana o ka ion a mālama i ka electrolyte pono.Hoʻokomo ʻia ka hana a me nā ʻāpana pili o ka mea hoʻokaʻawale pākahi lithium-ion penei:

1. Paʻa kemika: Pono ka diaphragm e loaʻa i ke kūpaʻa kemika maikaʻi loa, ka pale ʻana i ka corrosion maikaʻi a me ke kūpaʻa ʻelemakule ma lalo o nā kūlana solvent organik, a hiki ke mālama i ka hana paʻa ma lalo o nā kūlana koʻikoʻi e like me ke kiʻekiʻe kiʻekiʻe a me ka haʻahaʻa kiʻekiʻe.

2. Mechanical ikaika: Pono ka mea hoʻokaʻawale i ka ikaika mechanical a me ka elasticity e hōʻoia i ka ikaika tensile a me ke kūpaʻa ʻana i mea e pale ai i ka pōʻino i ka wā e hui ai a hoʻohana paha.

3. Ionic conductivity: Ma lalo o ka organic electrolyte system, ka ionic conductivity he haʻahaʻa ma mua o ka aqueous electrolyte system, no laila e loaʻa i ka mea hoʻokaʻawale nā ​​hiʻohiʻona o ke kūpaʻa haʻahaʻa a me ka conductivity ionic kiʻekiʻe.I ka manawa like, i mea e ho'ēmi ai i ke kū'ēʻana, pono ka mānoanoa o ka mea hoʻokaʻawale e like me ka lahilahi e hiki ai ke hoʻonui i ka'āpana electrode.

4. Paʻa wela: Ke loaʻa nā mea ʻino a i ʻole nā ​​hemahema e like me ka overcharge, overdischarge, a me ke kaapuni pōkole i ka wā o ka hana ʻana, pono e loaʻa i ka mea hoʻokaʻawale ke kūpaʻa wela maikaʻi.I kekahi mahana, pono e hoʻoheheʻe a hoʻoheheʻe ʻia ka diaphragm, no laila e pale ana i ke kaapuni kūloko o ka pākaukau a pale i nā pōʻino palekana.

5. ʻO ka hoʻomaʻemaʻe ʻana a me ke ʻano o ka pore hiki ke hoʻopaʻa ʻia: ʻO ke ʻano o ka pore a me ka uhi ʻana o ka ʻili o ka mea hoʻokaʻawale e loaʻa i ka mana hoʻomaʻemaʻe e hōʻoia i ka mea hoʻokaʻawale, a laila e hoʻomaikaʻi ai i ka mana a me ke ola pōʻai o ka pā.Ma ka ʻōlelo maʻamau, ʻo ka polyethylene flake (PP) a me ka polyethylene flake (PE) microporous diaphragms he mau mea diaphragm maʻamau i kēia manawa, a ʻoi aku ke kumukūʻai.Akā aia kekahi mau mea hoʻokaʻawale pākaukau lithium-ion, e like me ka polyester, he hana maikaʻi, akā he kiʻekiʻe ke kumukūʻai.