Hiki ke hoʻohana ʻia nā kānana molekole Zeolite e hoʻoheheʻe i nā electrolytes ma o ka adsorption kino, e pale aku i nā hopena maikaʻi ʻole o ka wai a no laila e hoʻomaikaʻi ai i ka hana a me ka palekana o ka pā lithium, kahi i hoʻonui nui ʻia i kēia manawa.
Nā mea hoʻohui o nā Electrolytes Lithium maʻamau
ʻO nā mea hoʻoheheʻe organik ka mea nui o ka electrolyte, e helu ana ma kahi o 80% ~ 90%. ʻO kēia mau mea hoʻoheheʻe he ethylene carbonate (EC), dimethyl carbonate (DMC), propylene carbonate (PC), diethyl carbonate (DEC), ethyl methyl carbonate (EMC), etc.
ʻO ka paʻakai Lithium kekahi mea o ka electrolyte a ʻo ia ke kumu lithium kumu. ʻO kēia mau paʻakai lithium he lithium hexafluorophosphate (LiPF6), lithium bis(fluorosulfonyl)imide (LiFSI), lithium tetrafluoroborate (LiBF₄), lithium perchlorate (LiClO₄), etc.
Hoʻopili nā mea hoʻohui ma kahi o 5% o ka electrolyte. Aia kēia mau mea hoʻohui i nā mea hoʻohui kiʻiʻoniʻoni, -pākuʻi ahi, stabilizers, a pēlā aku.
Ma keʻano holoʻokoʻa, pili ka hana o ka lithium electrolyte i ka hopena synergistic o nā solvents, ka paʻakai lithium a me nā mea hoʻohui. No ka laʻana, ka hui pū ʻana o EC/DMC i hui pū ʻia me LiPF6hiki ke kaulike i ka ionic conductivity a me ke kūpaʻa.
Nā hopena o ka wai i loko o nā electrolytes
Hoʻopili loa kēlā mau mea i ka hana electrochemical, ka wai a me nā haumia hiki ke hoʻopilikia nui i ka hana a me ka maikaʻi o nā pā lithium. ʻo kahi laʻana:
Hiki i ka wai ke hana kemika me nā paʻakai lithium i loko o ka electrolyte e hana i nā mea ʻino e like me ka hydrofluoric acid (HF) a me ka lithium fluoride (LiF), hiki ke hōʻino i ke ʻano o ka pākaukau, hoʻoulu i ka leakage a i ʻole nā pōkole pōkole, a hoʻemi i ka hiki o ka pākaukau.
Hiki ke hoʻopōʻino ʻia ke kiʻi paʻa electrolyte interface (SEI) i hana ʻia e ka kiʻiʻoniʻoni -mea hoʻohui ʻia e ka wai, e nalowale ana kona mānoanoa a me ka like ʻole, e alakaʻi ana i ka hoʻonui ʻana i ke kūpaʻa kūloko o ka pākaukau a me ka emi ʻana o ka mana hoʻokuʻu.
I ka hoʻouka ʻana a me ka hoʻokuʻu ʻana, hiki ke hoʻoheheʻe ka wai e hana i nā kinoea (e like me CO₂ a me H₂), ka mea e hoʻonui ai i ke kaomi kūloko o ka pā. Hiki i kēia ke alakaʻi i ka puʻupuʻu ʻana o ka pākaukau, leakage o ka wai, a me ka puhi ʻana, ke ahi, a me ka pahū, e hōʻike ana i kahi hoʻoweliweli palekana.
ʻO nā pōʻino o ka wai i ʻōlelo ʻia ma ka mālama ʻana i ka solvent aia pū kekahi i ka electrolyte. I ka hōʻuluʻulu manaʻo, pili ka wai i ka conductivity electrolyte, ka paʻa o ka pilina electrolyte, a me ke ola pōʻai a me ka palekana, ʻo ia ke kumu mana nui i ka hana ʻana a me ka hoʻohana ʻana i nā pā lithium.
Nā kānana molekole no ka hoʻoheheʻe ʻana i ka wai
ʻO ka hoʻohana ʻana o nā kānana molecular i nā electrolytes e like me kā lākou mau kumu kikoʻī, e like me ka hoʻomaloʻo ʻana i ka solvent, ka hoʻomaloʻo electrolyte a me ka deacidification, ka hoʻoulu hou ʻana o ka electrolyte, a me ka hoʻonui ʻana i ka hana electrochemical.
ʻO Type 5A Zeolite Molecular Sieve ka mea i makemake nui ʻia no ka dehydration electrolyte, a hiki iā ia ke hoʻoneʻe pono i ka wai mai ka electrolyte, e pale ana i ka piʻi ʻana o ke kū'ē kūloko a me nā hopena electrochemical, e hoʻomaikaʻi ai i ka hana a me ka palekana o ka pā lithium.
ʻAno 3A, 4A, 13X, ʻano, ʻano lithium, a me nā kānana molekole zeolite composite hiki ke hoʻopili ʻia i nā electrolytes lithium. Ma ka leveraging lākou ikaika adsorption, ion sieving waiwai a me ka structural paʻa, e hoʻomaikaʻi i ka maemae, paa a me ka paikikala hana o ka electrolytes.
