TY - JOUR
T1 - Extremely safe, high-rate and ultralong-life zinc-ion hybrid supercapacitors
AU - Dong, Liubing
AU - Ma, Xinpei
AU - Li, Yang
AU - Zhao, Ling
AU - Liu, Wenbao
AU - Cheng, Junye
AU - Xu, Chengjun
AU - Li, Baohua
AU - Yang, Quan-Hong
AU - Kang, Feiyu
PY - 2018/7
Y1 - 2018/7
N2 - With rapid development of portable electronics and electric vehicles, high-performance energy storage devices are urgently needed; however, the existing energy storage systems often have some deficiency, such as low energy for supercapacitors, security risks for lithium-ion batteries and poor cycling stability for alkaline zinc/manganese dioxide batteries. Here we report a novel energy storage system of zinc-ion hybrid supercapacitors (ZHSs), in which activated carbon materials, Zn metal and ZnSO4 aqueous solution serve as cathode, anode and electrolyte, respectively. Reversible ion adsorption/desorption on AC cathode and Zn2+ deposition/stripping on Zn anode enable the ZHSs to repeatedly and rapidly store/deliver electrical energy, accompanying with a capacity of 121 mAh g−1 (corresponding to an energy of 84 Wh kg−1), a very large power output of 14.9 kW kg−1 and an excellent cycling stability with 91% capacity retention over 10000 cycles. The extremely safe, high-rate and ultralong-life ZHSs are believed to provide new options for next-generation energy storage devices.
AB - With rapid development of portable electronics and electric vehicles, high-performance energy storage devices are urgently needed; however, the existing energy storage systems often have some deficiency, such as low energy for supercapacitors, security risks for lithium-ion batteries and poor cycling stability for alkaline zinc/manganese dioxide batteries. Here we report a novel energy storage system of zinc-ion hybrid supercapacitors (ZHSs), in which activated carbon materials, Zn metal and ZnSO4 aqueous solution serve as cathode, anode and electrolyte, respectively. Reversible ion adsorption/desorption on AC cathode and Zn2+ deposition/stripping on Zn anode enable the ZHSs to repeatedly and rapidly store/deliver electrical energy, accompanying with a capacity of 121 mAh g−1 (corresponding to an energy of 84 Wh kg−1), a very large power output of 14.9 kW kg−1 and an excellent cycling stability with 91% capacity retention over 10000 cycles. The extremely safe, high-rate and ultralong-life ZHSs are believed to provide new options for next-generation energy storage devices.
KW - Activated carbon
KW - Energy storage
KW - Zinc-ion hybrid supercapacitor
KW - Zn anode
UR - http://www.scopus.com/inward/record.url?scp=85043374552&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85043374552&origin=recordpage
U2 - 10.1016/j.ensm.2018.01.003
DO - 10.1016/j.ensm.2018.01.003
M3 - RGC 21 - Publication in refereed journal
SN - 2405-8297
VL - 13
SP - 96
EP - 102
JO - Energy Storage Materials
JF - Energy Storage Materials
ER -
