电极
层状双氢氧化物
电化学
材料科学
锌
扫描电子显微镜
无机化学
水溶液
电解质
氢氧化物
碱性电池
化学工程
氢氧化锌
化学
冶金
复合材料
物理化学
工程类
作者
Amir Bani Hashemi,Ghoncheh Kasiri,Jens Glenneberg,Frederieke Langer,Róbert Kun,Fabio La Mantia
标识
DOI:10.1002/celc.201800291
摘要
Abstract Layered double hydroxides (LDH) have shown to improve the zinc electrodeposition efficiency at the negative electrode of aqueous zinc‐ion batteries. In this work, a copper‐doped Zn−Al−CO 3 layered double hydroxide (LDH) has been synthesized by co‐precipitation method under constant pH, and investigated as suitable solid‐state additive in zinc‐based negative electrodes. X‐ray diffraction patterns in combination with scanning electron microscope images show that the as‐synthesized LDHs are well crystalline and hexagonal platelet‐like. LDH was mixed with zinc powder in different ratios and the electrochemical performances of the mixtures were characterized by galvanostatic cycling with potential limitation (GCPL) at different current rates. The results show that an appropriate combination of zinc and LDH can be used to reach electrodeposition efficiency equal to 98 %. Thereafter, the performance of this electrode in a full cell is studied. In such configuration, the electrode shows that the electrodeposition efficiency remains high even at high current rates, which is an important characteristic for grid‐scale energy storage.
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