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Hybrid Supercapacitors: An Aqueous Zn‐Ion Hybrid Supercapacitor with High Energy Density and Ultrastability up to 80 000 Cycles (Adv. Energy Mater. 47/2019)
Author(s) -
Wu Shuilin,
Chen Yatu,
Jiao Tianpeng,
Zhou Jun,
Cheng Junye,
Liu Bin,
Yang Shaoran,
Zhang Kaili,
Zhang Wenjun
Publication year - 2019
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201970184
Subject(s) - materials science , supercapacitor , electrolyte , aqueous solution , plating (geology) , foil method , chemical engineering , stripping (fiber) , electrochemistry , composite material , electrode , organic chemistry , chemistry , geophysics , engineering , geology
In article number 1902915, Kaili Zhang, Wenjun Zhang and co‐workers investigate the impacts of anions and concentrations of a variety of Zn‐containing aqueous solutions on Zn stripping/plating efficiency. It is demonstrated that dendrite growth and byproduct formation can be suppressed during Zn plating, and the competitive hydrogen evolution reaction is restrained by using a 3 m Zn(CF 3 SO 3 ) 2 electrolyte. As a result, a high Zn stripping/plating efficiency is achieved. Furthermore, based on this electrolyte, a novel hybrid supercapacitor comprising Zn foil and porous carbon derived from chemically activated graphene is developed which delivers high energy density and an ultra‐long lifespan.