Self-Assembled Binary Organic Granules with Multiple Lithium Uptake Mechanisms toward High-Energy Flexible Lithium-Ion Hybrid Supercapacitors

2018 ◽  
Vol 8 (30) ◽  
pp. 1802273 ◽  
Author(s):  
Zhongli Hu ◽  
Shah Sayed ◽  
Tao Jiang ◽  
Xingyu Zhu ◽  
Chen Lu ◽  
...  
Keyword(s):  
Lithium Ion ◽  
High Energy ◽  
Hybrid Supercapacitors ◽  
Self Assembled ◽  
Uptake Mechanisms

scholarly journals Niobium Tungsten Oxide in a Green Water-in-Salt Electrolyte Enables Ultra-Stable Aqueous Lithium-Ion Capacitors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Shengyang Dong ◽  
Yi Wang ◽  
Chenglong Chen ◽  
Laifa Shen ◽  
Xiaogang Zhang
Keyword(s):  
Tungsten Oxide ◽  
Electrode Materials ◽  
Low Cost ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Green Water ◽  
Lithium Acetate ◽  
Hybrid Supercapacitors

AbstractAqueous hybrid supercapacitors are attracting increasing attention due to their potential low cost, high safety and eco-friendliness. However, the narrow operating potential window of aqueous electrolyte and the lack of suitable negative electrode materials seriously hinder its future applications. Here, we explore high concentrated lithium acetate with high ionic conductivity of 65.5 mS cm−1 as a green “water-in-salt” electrolyte, providing wide voltage window up to 2.8 V. It facilitates the reversible function of niobium tungsten oxide, Nb18W16O93, that otherwise only operations in organic electrolytes previously. The Nb18W16O93 with lithium-ion intercalation pseudocapacitive behavior exhibits excellent rate performance, high areal capacity, and ultra-long cycling stability. An aqueous lithium-ion hybrid capacitor is developed by using Nb18W16O93 as negative electrode combined with graphene as positive electrode in lithium acetate-based “water-in-salt” electrolyte, delivering a high energy density of 41.9 W kg−1, high power density of 20,000 W kg−1 and unexceptionable stability of 50,000 cycles.

High-energy lithium-ion hybrid supercapacitors composed of hierarchical urchin-like WO3/C anodes and MOF-derived polyhedral hollow carbon cathodes

Nanoscale ◽  
2016 ◽  
Vol 8 (37) ◽  
pp. 16761-16768 ◽  
Author(s):  
Juan Xu ◽  
Yuanyuan Li ◽  
Lei Wang ◽  
Qifa Cai ◽  
Qingwei Li ◽  
...  
Keyword(s):  
Lithium Ion ◽  
High Energy ◽  
Hybrid Supercapacitors ◽  
Hollow Carbon

scholarly journals Blow-spun N-doped carbon fiber based high performance flexible lithium ion capacitors

RSC Advances ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 9833-9839
Author(s):  
Changzhen Zhan ◽  
Jianan Song ◽  
Xiaolong Ren ◽  
Yang Shen ◽  
Hui Wu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
High Performance ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Power Density ◽  
Hybrid Supercapacitors

Constructing flexible hybrid supercapacitors is a feasible way to achieve devices with high energy density, high power density and flexibility at the same time.

Microwave-Assisted Rapid Synthesis of Self-Assembled T-Nb2O5Nanowires for High-Energy Hybrid Supercapacitors

2017 ◽  
Vol 23 (17) ◽  
pp. 4203-4209 ◽  
Author(s):  
Huiling Yang ◽  
Henghui Xu ◽  
Libin Wang ◽  
Lei Zhang ◽  
Yunhui Huang ◽  
...  
Keyword(s):  
High Energy ◽  
Rapid Synthesis ◽  
Hybrid Supercapacitors ◽  
Microwave Assisted ◽  
Self Assembled

Controllable synthesis of uniform mesoporous H-Nb2O5/rGO nanocomposites for advanced lithium ion hybrid supercapacitors

2019 ◽  
Vol 7 (2) ◽  
pp. 693-703 ◽  
Author(s):  
Shengyuan Li ◽  
Ting Wang ◽  
Wangqin Zhu ◽  
Jiabiao Lian ◽  
Yunpeng Huang ◽  
...  
Keyword(s):  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
Controllable Synthesis ◽  
Hybrid Supercapacitors ◽  
Excellent Cycling Stability ◽  
Power Densities

Uniform mesoporous H-Nb2O5/rGO nanocomposites are developed for advanced lithium ion hybrid supercapacitors with remarkably high energy/power densities and excellent cycling stability.

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