High-voltage quasi-solid-state flexible supercapacitor with wide operational temperature based on a low-cost “water-in-salt” hydrogel electrolyte

Nanoscale ◽  
2021 ◽  
Author(s):  
Yongqi Deng ◽  
Hongfei Wang ◽  
Kefu Zhang ◽  
Jingwen Shao ◽  
Jun Qiu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
Electrochemical Stability ◽  
High Energy Density ◽  
Flexible Supercapacitor ◽  
Operational Temperature ◽  
Water Based ◽  
Electrochemical Stability Window

Recently, “water-in-salt” electrolyte provides a huge boost to the realization of high energy density for water-based supercapacitors by broadening the electrochemical stability window. However, the high cost and low conductivity...

Self-assembled polypyrrole nanotubes/MoS2 quantum dots for high performance solid state flexible symmetric supercapacitors

2021 ◽  
Author(s):  
Vijeth Hebri ◽  
Rabah Boukherroub ◽  
Ashokkumar Shankar Pawar ◽  
Vandana Molahalli ◽  
Devendrappa Hundekal
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Soft Template ◽  
Flexible Supercapacitor ◽  
Polypyrrole Nanotubes ◽  
Excellent Cycling Stability

A unique CS–PNT/MoS2 nanocomposite was synthesized using a self-degradable soft template approach and a flexible supercapacitor device is fabricated which shows a high energy density of 32.12 W h kg−1 and excellent cycling stability of 91.2% even after 10 000 cycles.

Mn3O4/RGO/SWCNT hybrid film for all-solid-state flexible supercapacitor with high energy density

2018 ◽  
Vol 283 ◽  
pp. 174-182 ◽  
Author(s):  
Jin He ◽  
Dong Yang ◽  
Huan Li ◽  
Xin Cao ◽  
Liping Kang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Hybrid Film ◽  
High Energy ◽  
High Energy Density ◽  
Flexible Supercapacitor

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

Graphite-Based Lithium-Free 3D Hybrid Anodes for High Energy Density All-Solid-State Batteries

2021 ◽  
pp. 1831-1838
Author(s):  
Xing Xing ◽  
Yejing Li ◽  
Shen Wang ◽  
Haodong Liu ◽  
Zhaohui Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Solid State Batteries ◽  
All Solid State Batteries

A High-Performance Free-Standing Zn Anode for Flexible Zinc-Ion Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Chenxi Gao ◽  
Jiawei Wang ◽  
Yuan Huang ◽  
Zixuan Li ◽  
Jiyan Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Free Standing ◽  
Energy Device ◽  
Zn Anode ◽  
Significant Attention

Zinc-ion batteries (ZIBs) have attracted significant attention owing to their high safety, high energy density, and low cost. ZIBs have been studied as a potential energy device for portable and...

Novel low-cost, high-energy-density (>700 Wh kg−1) Li-rich organic cathodes for Li-ion batteries

2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion
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