材料科学
水溶液
功率密度
储能
能量密度
涂层
制作
纳米技术
三碘化物
溶剂
化学工程
电解质
工程物理
功率(物理)
有机化学
化学
病理
物理化学
工程类
色素敏化染料
物理
替代医学
医学
量子力学
电极
作者
Xuting Jin,Li Song,Chunlong Dai,Yukun Xiao,Yuyang Han,Xiangyang Li,Ying Wang,Jiatao Zhang,Yang Zhao,Zhipan Zhang,Nan Chen,Lan Jiang,Liangti Qu
标识
DOI:10.1002/adma.202109450
摘要
Currently, reported aqueous microbatteries (MBs) only show unsatisfactory electrochemical performance (≤120 mWh cm-3 volumetric energy density and <1000 μWh cm-2 areal energy density) and it remains challenging to develop durable aqueous MBs that can simultaneously offer both high volumetric and areal energy density. Herein, an in situ electrodeposition strategy is adopted to construct a flexible aqueous zinc-iodine MB (ZIDMB). Notably, the fabrication process well avoids the use of common additives (such as binders, conductive agents, and toxic solvent) and also bypasses subsequent time-consuming procedures such as grinding, coating, drying, etc., thus greatly simplifying the manufacture of the ZIDMB. Meanwhile, owing to the suppression of the shuttle effect of triiodide ions and the high ionic conductivity of the polyelectrolyte, the ZIDMB can simultaneously deliver record-high volumetric and areal energy densities of 1647.3 mWh cm-3 and 2339.1 μWh cm-2 , thus achieving values at least 13.5- and 2.3-fold better than those of best available aqueous MBs, respectively. This work affords an innovative strategy to construct an ideal micro-power-source for future miniaturized and integrated electronics.
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