One-step hydrothermal synthesis of NiCo2S4 nanoplates/nitrogen-doped mesoporous carbon composites as advanced electrodes for asymmetric supercapacitors

2019 ◽  
Vol 439 ◽  
pp. 227082 ◽  
Author(s):  
Hongbo Zhang ◽  
Han Li ◽  
Zhipeng Sun ◽  
Dianzeng Jia
Keyword(s):  
Hydrothermal Synthesis ◽  
Mesoporous Carbon ◽  
Carbon Composites ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
One Step

One-Step Hydrothermal Synthesis of SnO2@Carbon Composites with Super Lithium Ions Storage Performances

2019 ◽  
Vol 19 (8) ◽  
pp. 4556-4564 ◽  
Author(s):  
Man-Xia Huang ◽  
Yan-Hui Sun ◽  
Jie-Qiong Li ◽  
Jun-Min Nan ◽  
Yue-Peng Cai
Keyword(s):  
Hydrothermal Synthesis ◽  
Carbon Composites ◽  
Lithium Ions ◽  
One Step

One-step replication and enhanced catalytic activity for cathodic oxygen reduction of the mesostructured Co3O4/carbon composites

2014 ◽  
Vol 43 (10) ◽  
pp. 4163-4168 ◽  
Author(s):  
Yongxia Wang ◽  
Xiangzhi Cui ◽  
Lisong Chen ◽  
Chenyang Wei ◽  
Fangming Cui ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Redox Couple ◽  
Carbon Composites ◽  
One Step

Mesoporous carbon provides channel for the diffusion of O2 molecules to the surface of Co3O4. O2 decompose into O2−/O2− species by means of the Co3+/Co2+ redox couple.

Facile Hydrothermal Synthesis and Electrochemical Performance of NiCo2O4 Nanoneedles

2020 ◽  
Vol 15 (2) ◽  
pp. 164-170
Author(s):  
Duo Cui ◽  
Rongda Zhao ◽  
Jun Xiang ◽  
Fufa Wu ◽  
Lijun Xin ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Spatial Structure ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Retention Rate ◽  
Cyclic Stability ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Hybrid Supercapacitors ◽  
One Step

NiCo2O4 nanoneedles on the surface of Ni foam were grown by a simple one step hydrothermal method, which is used as the working electrode for asymmetric supercapacitors. Its area specific capacitance is 981.64 C cm–2 at 1 mA cm–2, and the cycling stability can reach 100% after 10000 cycles at 4 mA cm–2. The spatial structure of the nanoneedle has important influence on the cyclic stability of NiCo2O4 electrode. The hybrid supercapacitors are prepared on the basis of the prepared NiCo2O4 nanoneedle electrodes. After 8000 cycles, its cycle life is stable and the capacitance retention rate reaches 100%.

A Facile approach to NiCoO2 intimately standing on nitrogen doped graphene sheets by one-step hydrothermal synthesis for supercapacitors

2015 ◽  
Vol 3 (13) ◽  
pp. 7121-7131 ◽  
Author(s):  
Yazhou Xu ◽  
Junchao Wei ◽  
Licheng Tan ◽  
Ji Yu ◽  
Yiwang Chen
Keyword(s):  
Hydrothermal Synthesis ◽  
Graphene Sheets ◽  
Nitrogen Doped ◽  
Nickel Cobaltite ◽  
Reduced Graphene ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
One Step

Binary nickel cobaltite oxides intimately standing on nitrogen-doped reduced graphene sheets are prepared utilizing a one-step hydrothermal synthesis.

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