Structurally stable Ni(OH)2 composite with super long‐term cycling life for hybrid supercapacitor

2021 ◽  
Author(s):  
Huaiyan Wang ◽  
Chunli Guo ◽  
Xiaochuan Ren ◽  
Yuyu Zhang ◽  
Xinquan Shi
Keyword(s):  
Hybrid Supercapacitor ◽  
Structurally Stable ◽  
Cycling Life

One-Step Hydrothermal Synthesis of CoNi2S4 for Hybrid Supercapacitor Electrodes

NANO ◽  
2019 ◽  
Vol 14 (07) ◽  
pp. 1950088 ◽  
Author(s):  
Peng Liu ◽  
Yanwei Sui ◽  
Fuxiang Wei ◽  
Jiqiu Qi ◽  
Qingkun Meng ◽  
...  
Keyword(s):  
Electrode System ◽  
Hybrid Supercapacitor ◽  
Microstructural Study ◽  
Specific Energy Density ◽  
Reduced Graphene ◽  
Efficient Charge ◽  
Spherical Core ◽  
One Step ◽  
High Specific Energy ◽  
Cycling Life

In this study, a simple one-step hydrothermal method was developed to prepare a novel hierarchical CoNi2S4 nanostructure similar to rambutan fruit. The surface microstructural study clearly visualized that the rambutan-like CoNi2S4 consists of nanorods grown directly on the surface of spherical core structures. The close attachment of the nanorods to the spheres increased the active areas of the electrode, which facilitates efficient charge transport from the nanorods to the spherical core structure. CoNi2S4 with a rambutan-like hierarchical structure showed an excellent specific capacitance of 944[Formula: see text]F[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text], considerable rate capacitance (75.6% retention at 10[Formula: see text]A[Formula: see text]g[Formula: see text]) and excellent cycling life (91.1% retention after 5000 circulations) in the three-electrode system. Besides, the assembled hybrid supercapacitor based on CoNi2S4 and reduced graphene oxide exhibited a high specific energy density of 23.58[Formula: see text]Wh[Formula: see text]kg[Formula: see text] at the power density of 800[Formula: see text]W[Formula: see text]kg[Formula: see text].

Flexible supercapacitors with high capacitance retention at temperatures from -20 to 100 oC based on DMSO-doping polymer hydrogel electrolytes

2021 ◽  
Author(s):  
Ya-Nan Liu ◽  
Huili Li ◽  
Xue Wang ◽  
Tian Lv ◽  
Keyi Dong ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
High Power ◽  
High Power Density ◽  
Energy Storage Devices ◽  
High Capacitance ◽  
Storage Devices ◽  
Flexible Supercapacitors ◽  
Cycling Life

Flexible supercapacitors have attracted increasing interests due to their high power density, long-term cycling life and excellent safety. Liking other energy storage devices, flexible supercapacitors show serious performance degradation as...

Chemical Vapor Synthesized WS2-Embedded Polystyrene-derived Porous Carbon as Superior Long-term Cycling Life Anode Material for Li-ion Batteries

2015 ◽  
Vol 153 ◽  
pp. 49-54 ◽  
Author(s):  
Weiming Lv ◽  
Jiangyong Xiang ◽  
Fusheng Wen ◽  
Zhiyan Jia ◽  
Ruilong Yang ◽  
...  
Keyword(s):  
Anode Material ◽  
Porous Carbon ◽  
Chemical Vapor ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Cycling Life

Room‐Temperature Rechargeable Ca‐Ion Based Hybrid Batteries with High Rate Capability and Long‐Term Cycling Life

2019 ◽  
Vol 9 (29) ◽  
pp. 1901099 ◽  
Author(s):  
Jihui Lang ◽  
Chunlei Jiang ◽  
Yue Fang ◽  
Lei Shi ◽  
Shijie Miao ◽  
...  
Keyword(s):  
Room Temperature ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Cycling Life

A long cycle life, high coulombic efficiency iron molten air battery

2017 ◽  
Vol 1 (3) ◽  
pp. 474-481 ◽  
Author(s):  
Baochen Cui ◽  
Wei Xiang ◽  
Shuzhi Liu ◽  
Hongyu Xin ◽  
Xianjun Liu ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Coulombic Efficiency ◽  
High Energy ◽  
Cycle Life ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Air Battery ◽  
High Energy Efficiency ◽  
Cycling Life

Despite the recent advancements in iron molten air batteries, great challenges still remain to realize cycling stability, high energy efficiency and a long-term cycling life.

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