Nitrogen and Oxygen Co‐doped Hierarchical Porous Carbon: Electrode Materials for High‐Energy Density and Flexible Solid‐State Supercapacitors

2020 ◽  
Vol 7 (14) ◽  
pp. 3065-3073
Author(s):  
Xuehua Song ◽  
Qibin Chen ◽  
Enhui Shen ◽  
Chenkai Li ◽  
Honglai Liu
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Electrode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Electrode ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Porous Carbon Electrode ◽  
Co Doped

A cross-like hierarchical porous lithium-rich layered oxide with (110)-oriented crystal planes as a high energy density cathode for lithium ion batteries

2019 ◽  
Vol 7 (21) ◽  
pp. 13120-13129 ◽  
Author(s):  
Min Chen ◽  
Xiaojing Jin ◽  
Zhi Chen ◽  
Yaotang Zhong ◽  
Youhao Liao ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Oriented Crystal ◽  
Layered Oxide ◽  
Hierarchical Porous ◽  
Implantation Method

Cross-like hierarchical porous Li1.167Mn0.583Ni0.250O2 with (110)-oriented crystal planes (CHP-LMNO) is successfully developed by a morphology-conserved solid-state Li implantation method.

scholarly journals Self-Supported Sheets-on-Wire CuO@Ni(OH)2/Zn(OH)2 Nanoarrays for High-Performance Flexible Quasi-Solid-State Supercapacitor

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 680
Author(s):  
Jianyang Jiang ◽  
Xiong Xiong Liu ◽  
Jiayu Han ◽  
Ke Hu ◽  
Jun Song Chen
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Electrode Materials ◽  
Red Light ◽  
High Capacity ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Supercapacitor Application ◽  
Charge Discharge

Transition metal hydroxides have attracted a lot of attention as the electrode materials for supercapacitors owing to their relatively high theoretical capacity, low cost, and facile preparation methods. However, their low intrinsic conductivity deteriorates their high-rate performance and cycling stability. Here, self-supported sheets-on-wire CuO@Ni(OH)2/Zn(OH)2 (CuO@NiZn) composite nanowire arrays were successfully grown on copper foam. The CuO nanowire backbone provided enhanced structural stability and a highly efficient electron-conducting pathway from the active hydroxide nanosheets to the current collector. The resulting CuO@NiZn as the battery-type electrode for supercapacitor application delivered a high capacity of 306.2 mAh g−1 at a current density of 0.8 A g−1 and a very stable capacity of 195.1 mAh g−1 at 4 A g−1 for 10,000 charge–discharge cycles. Furthermore, a quasi-solid-state hybrid supercapacitor (qss HSC) was assembled with active carbon, exhibiting 125.3 mAh g−1 at 0.8 A g−1 and a capacity of 41.6 mAh g−1 at 4 A g−1 for 5000 charge–discharge cycles. Furthermore, the qss HSC was able to deliver a high energy density of about 116.0 Wh kg−1. Even at the highest power density of 7.8 kW kg−1, an energy density of 20.5 Wh kg−1 could still be obtained. Finally, 14 red light-emitting diodes were lit up by a single qss HSC at different bending states, showing good potential for flexible energy storage applications.

Ultrahigh surface area biomass derived 3D hierarchical porous carbon nanosheet electrodes for high energy density supercapacitors

Carbon ◽  
2021 ◽  
Vol 174 ◽  
pp. 463-474
Author(s):  
Aravindha Raja Selvaraj ◽  
Anand Muthusamy ◽  
Inho-Cho ◽  
Hee-Je Kim ◽  
Karuppanan Senthil ◽  
...  
Keyword(s):  
Energy Density ◽  
Surface Area ◽  
Porous Carbon ◽  
High Energy ◽  
High Energy Density ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

Synergistic design of a N, O co-doped honeycomb carbon electrode and an ionogel electrolyte enabling all-solid-state supercapacitors with an ultrahigh energy density

2019 ◽  
Vol 7 (2) ◽  
pp. 816-826 ◽  
Author(s):  
Ziyang Song ◽  
Liangchun Li ◽  
Dazhang Zhu ◽  
Ling Miao ◽  
Hui Duan ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Porous Carbon ◽  
Energy Output ◽  
Carbon Electrode ◽  
Ultrahigh Energy ◽  
Porous Carbon Electrode ◽  
Co Doped

Synergistic design of a N, O co-doped honeycomb porous carbon electrode and an ionogel electrolyte is reported to boost the energy output of all-solid-state supercapacitors.

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