A Flexible Aqueous Zinc-Iodine Microbattery with Unprecedented Energy Density

被引:123
作者
Jin, Xuting [1 ,2 ]
Song, Li [1 ]
Dai, Chunlong [1 ]
Xiao, Yukun [1 ]
Han, Yuyang [1 ]
Li, Xiangyang [1 ]
Wang, Ying [1 ]
Zhang, Jiatao [1 ,2 ]
Zhao, Yang [1 ]
Zhang, Zhipan [1 ]
Chen, Nan [1 ]
Jiang, Lan [3 ]
Qu, Liangti [4 ]
机构
[1] Beijing Inst Technol, Sch Chem & Chem Engn, Key Lab Photoelect Electrophoton Convers Mat, Minist Educ China,Key Lab Cluster Sci, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[3] Beijing Inst Technol, Sch Mech Engn, Laser Micro Nanofabricat Lab, Beijing 100081, Peoples R China
[4] Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金; 国家重点研发计划;
关键词
flexible aqueous microbatteries; high-capacity batteries; high-energy-density batteries; in situ electrodeposition strategy; zinc-iodine microbatteries; ION MICRO-BATTERIES; ON-CHIP; SUPERCAPACITORS; FABRICATION; NANOTUBES; DEVICE; ARRAY;
D O I
10.1002/adma.202109450
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Currently, reported aqueous microbatteries (MBs) only show unsatisfactory electrochemical performance (<= 120 mWh cm(-3) volumetric energy density and <1000 mu Wh 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 mu Wh 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.
引用
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页数:14
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