TY - JOUR
T1 - All-Organic Rechargeable Battery with Reversibility Supported by “Water-in-Salt” Electrolyte
AU - Dong, Xiaoli
AU - Yu, Hongchuan
AU - Ma, Yuanyuan
AU - Bao, Junwei Lucas
AU - Truhlar, Donald G.
AU - Wang, Yonggang
AU - Xia, Yongyao
N1 - Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/2/21
Y1 - 2017/2/21
N2 - Rechargeable batteries with organic electrodes are preferred to those with transition-metal-containing electrodes for their environmental friendliness, and resource availability, but all such batteries reported to date are based on organic electrolytes, which raise concerns of safety and performance. Here an aqueous-electrolyte all-organic rechargeable battery is reported, with a maximum operating voltage of 2.1 V, in which polytriphenylamine (PTPAn) and 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA)-derived polyimide (PNTCDA) serve as cathode and anode material, respectively. A key feature of the design is use of a “water-in-salt” electrolyte to bind “free” water; this impedes the side reaction of water oxidation, thereby enabling excellent reversibility in aqueous solution. The battery can deliver a maximum energy density of 52.8 Wh kg−1, which is close to most of the all-organic batteries with organic electrolytes. The battery exhibits a supercapacitor-like high power of 32 000 W kg−1 and a long cycle life (700 cycles with capacity retention of 85 %), due to the kinetics not being limited by ion diffusion at either electrode.
AB - Rechargeable batteries with organic electrodes are preferred to those with transition-metal-containing electrodes for their environmental friendliness, and resource availability, but all such batteries reported to date are based on organic electrolytes, which raise concerns of safety and performance. Here an aqueous-electrolyte all-organic rechargeable battery is reported, with a maximum operating voltage of 2.1 V, in which polytriphenylamine (PTPAn) and 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA)-derived polyimide (PNTCDA) serve as cathode and anode material, respectively. A key feature of the design is use of a “water-in-salt” electrolyte to bind “free” water; this impedes the side reaction of water oxidation, thereby enabling excellent reversibility in aqueous solution. The battery can deliver a maximum energy density of 52.8 Wh kg−1, which is close to most of the all-organic batteries with organic electrolytes. The battery exhibits a supercapacitor-like high power of 32 000 W kg−1 and a long cycle life (700 cycles with capacity retention of 85 %), due to the kinetics not being limited by ion diffusion at either electrode.
KW - all-organic
KW - polyimide
KW - polytriphenylamine
KW - rechargeable battery
KW - “water-in-salt” electrolyte
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U2 - 10.1002/chem.201700063
DO - 10.1002/chem.201700063
M3 - Article
C2 - 28075043
AN - SCOPUS:85011372925
SN - 0947-6539
VL - 23
SP - 2560
EP - 2565
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 11
ER -