Journal
JOURNAL OF POWER SOURCES
Volume 410, Issue -, Pages 137-142Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2018.11.017
Keywords
Aqueous Zn-ion battery; Integrated structure; Flexible; High energy and power densities
Funding
- National Natural Science Foundation of China [21764001, 21664001]
- project of Jiangxi Province Advantageous Science and Technology Innovation Team [20153BCB24001]
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Energy storage devices are usually stacked from two electrodes and a sandwiched separator. The possible de lamination of the stacked structure could deteriorate the electrochemical performance under deformed states. Here the cathode (polyaniline) and anode (metal Zn) are separately electrodeposited on a filter paper coated with current collectors to produce an integrated aqueous Zn-ion battery. High energy and power densities of 175.1 mWh/g@0.43 W/g and 12.1 W/g@90.1 mWh/g, together with excellent cyclic stability, are achieved for the integrated aqueous Zn-ion battery. The electrochemical performance is advantageous over that of Li-ion paper batteries with organic electrolytes and asymmetric supercapacitors with aqueous electrolytes. Impressively, the integrated aqueous Zn-ion battery works well under bending, folding and twisting, respectively, with little loss in the electrochemical performance.
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