Sodium Polyacrylate Hydrogel Electrolyte Hybridized with Layered Double Hydroxide for Solid-State NiCo/Zinc Battery
Sodium Polyacrylate Hydrogel Electrolyte Hybridized with Layered Double Hydroxide for Solid-State NiCo/Zinc Battery
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层状双氢氧化物杂化聚丙烯酸钠水凝胶电解质用于固态镍钴/锌电池
DOI：
10.1149/1945-7111/ac65b4
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发表时间：
2022
影响因子：
3.9
通讯作者：
Noriyuki Sonoyama
中科院分区：
文献类型：
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作者：
Dedetemo Kimilita Patrick;Akira Karasawa;Noriyuki Sonoyama
锌基电池因其在水溶液电解质中的安全性、低成本、环境友好和高容量而受到关注。在这项研究中，层状双氢氧化物，一种固态OH−离子导体，与聚丙烯酸钠水凝胶杂化，以构建具有高OH−离子电导率的强弹性水凝胶电解质（PANa-LDH）。PANa-LDH，KOH通过浸入6.0 M KOH溶液中引入，在30 C下显示出0.213 S cm-1的显著高的离子电导率。以镍钴氢氧化物为阴极，PANa-LDH为电解质，锌为阳极，制备了固态电池。在0.1 A g− 1下获得了287 mAh g− 1的高比容量，并分别获得了212 Wh kg− 1和73 kW kg− 1的高能量和功率密度（基于阴极重量）。
Zinc-based batteries have attracted attention for their safety in aqueous electrolytes with low cost, environmental friendliness, and high capacity. In this study, layered double hydroxide, a solid-state OH− ion conductor, was hybridized with sodium polyacrylate hydrogel to construct a strong elastic hydrogel electrolyte (PANa-LDH) with high OH− ion conductivity. PANa-LDH, KOH was introduced by dipping into 6.0 M KOH solution, showed a significantly high ionic conductivity of 0.213 S cm− 1 at 30 C. A solid-state battery was fabricated using nickel-cobalt hydroxide cathode, PANa-LDH electrolyte, and zinc anode. The high specific capacity of 287 mAh g− 1 was obtained at 0.1 A g− 1 with high energy and power densities of 212 Wh kg− 1 and 73 kW kg− 1 (based on the cathode weight), respectively.