Synthesis of nitrogen/sulfur co-doped reduced graphene oxide aerogels for high-performance supercapacitors with ionic liquid electrolyte

2019 ◽  
Vol 238 ◽  
pp. 121932 ◽  
Author(s):  
Yujuan Chen ◽  
Li Sun ◽  
Zhaoen Liu ◽  
Yuyang Jiang ◽  
Kelei Zhuo
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Reduced Graphene ◽  
Co Doped

scholarly journals Application of micro-impinging stream reactors in the preparation of Co and Al co-doped Ni(OH)2 nanocomposites for supercapacitors and their modification with reduced graphene oxide

RSC Advances ◽  
2019 ◽  
Vol 9 (44) ◽  
pp. 25677-25689
Author(s):  
Renjie Gu ◽  
Xuelei Li ◽  
Kunpeng Cheng ◽  
Lixiong Wen
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Reduced Graphene ◽  
Co Doped

High performance Ni–Co–Al(OH)n nanocomposites as supercapacitors were prepared and modified with reduced graphene oxide within a novel micro-impinging stream reactor.

High performance supercapacitors based on reduced graphene oxide in aqueous and ionic liquid electrolytes

Carbon ◽  
2011 ◽  
Vol 49 (2) ◽  
pp. 573-580 ◽  
Author(s):  
Yao Chen ◽  
Xiong Zhang ◽  
Dacheng Zhang ◽  
Peng Yu ◽  
Yanwei Ma
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Liquid Electrolytes ◽  
Reduced Graphene

scholarly journals A high-performance potassium metal battery using safe ionic liquid electrolyte

2020 ◽  
Vol 117 (45) ◽  
pp. 27847-27853
Author(s):  
Hao Sun ◽  
Peng Liang ◽  
Guanzhou Zhu ◽  
Wei Hsuan Hung ◽  
Yuan-Yao Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Performance ◽  
Elevated Temperatures ◽  
High Energy ◽  
Liquid Electrolyte ◽  
Energy Storage Devices ◽  
Ionic Liquid Electrolyte ◽  
Storage Devices ◽  
Safety Issues ◽  
Reduced Graphene

Potassium secondary batteries are contenders of next-generation energy storage devices owing to the much higher abundance of potassium than lithium. However, safety issues and poor cycle life of K metal battery have been key bottlenecks. Here we report an ionic liquid electrolyte comprising 1-ethyl-3-methylimidazolium chloride/AlCl3/KCl/potassium bis(fluorosulfonyl) imide for safe and high-performance batteries. The electrolyte is nonflammable and exhibits a high ionic conductivity of 13.1 mS cm−1at room temperature. A 3.6-V battery with K anode and Prussian blue/reduced graphene oxide cathode delivers a high energy and power density of 381 and 1,350 W kg−1, respectively. The battery shows an excellent cycling stability over 820 cycles, retaining ∼89% of the original capacity with high Coulombic efficiencies of ∼99.9%. High cyclability is also achieved at elevated temperatures up to 60 °C. Uniquely, robust K, Al, F, and Cl-containing passivating interphases are afforded with this electrolyte, which is key to superior battery cycling performances.

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