Rational Design of Hierarchical CoS2/CuCo2S4 for Three-dimensional All-Solid-State Hybrid Supercapacitors with High Energy Density, Rate Efficiency and Operational Stability

2021 ◽  
Author(s):  
Yogesh Kumar Sonia ◽  
Mahesh Kumar Paliwal ◽  
Sumanta Kumar Meher
Keyword(s):  
Solid State ◽  
Rational Design ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Superior Performance ◽  
Exchange Method ◽  
Hybrid Supercapacitors ◽  
Storage Energy ◽  
Density Rate

In the context to develop superior-performance all-solid-state hybrid supercapacitor devices, with excellent charge storage, energy & power density, working stability and rate efficiency, herein we have adopted an anion-exchange method...

Single crystal Ni-rich layered cathodes enabling superior performance in all-solid-state batteries with PEO-based solid electrolytes

2021 ◽  
Author(s):  
Maoyi Yi ◽  
Li Jie ◽  
Xin-ming Fan ◽  
Maohui Bai ◽  
Zhi Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Single Crystal ◽  
Solid Electrolytes ◽  
High Energy ◽  
High Energy Density ◽  
Superior Performance ◽  
Composite Electrolytes ◽  
Solid State Batteries ◽  
All Solid State Batteries

PEO-based composite electrolytes are one of the most practical electrolytes in all-solid batteries (ASSBs). To achieve the perspective of ASSBs with high energy density, PEO based composite electrolytes should match...

Three-dimensional Co3O4@C@Ni3S2 sandwich-structured nanoneedle arrays: towards high-performance flexible all-solid-state asymmetric supercapacitors

2015 ◽  
Vol 3 (31) ◽  
pp. 16150-16161 ◽  
Author(s):  
Dezhi Kong ◽  
Chuanwei Cheng ◽  
Ye Wang ◽  
Jen It Wong ◽  
Yaping Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solid State ◽  
High Performance ◽  
Three Dimensional ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Cycle Stability ◽  
Asymmetric Supercapacitors

A novel asymmetric supercapacitor composed of Co3O4@C@Ni3S2 NNAs as the positive electrode and activated carbon (AC) as the negative electrode can deliver a high energy density and excellent long cycle stability.

Regulated synthesis of Eutectic Ni3S2/NiS nanorods for quasi-solid-state hybrid supercapacitors with high energy density

2021 ◽  
Vol 482 ◽  
pp. 228910 ◽  
Author(s):  
Fangshuai Chen ◽  
Chang Liu ◽  
Baihua Cui ◽  
Shuming Dou ◽  
Jie Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Hybrid Supercapacitors

Selective design of binder-free hierarchical nickel molybdenum sulfide as a novel battery-type material for hybrid supercapacitors

2019 ◽  
Vol 7 (44) ◽  
pp. 25467-25480 ◽  
Author(s):  
Ramu Manikandan ◽  
C. Justin Raj ◽  
Goli Nagaraju ◽  
Myoungho Pyo ◽  
Byung Chul Kim
Keyword(s):  
Energy Density ◽  
Rational Design ◽  
Electrode Materials ◽  
High Energy ◽  
Molybdenum Sulfide ◽  
High Energy Density ◽  
Type Material ◽  
Hybrid Supercapacitors ◽  
Binder Free

Recently, binder-free and hierarchical electrode materials have attracted special attention for the rational design of high-energy density hybrid supercapacitors.

scholarly journals Coconut Shell-Derived Activated Carbon for High-Performance Solid-State Supercapacitors

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4546
Author(s):  
Kuan-Ching Lee ◽  
Mitchell Shyan Wei Lim ◽  
Zhong-Yun Hong ◽  
Siewhui Chong ◽  
Timm Joyce Tiong ◽  
...  
Keyword(s):  
Solid State ◽  
Surface Area ◽  
Activated Carbons ◽  
High Energy ◽  
High Energy Density ◽  
Coconut Shell ◽  
Superior Performance ◽  
Bet Surface Area ◽  
Koh Activation ◽  
Symmetric Supercapacitor

Coconut shells, low-cost and renewable agro-wastes, were used as a starting material in the synthesis of hierarchical activated carbons via hydrothermal, KOH-activation, and carbonization techniques. The ratio of KOH to hydrochar was varied in a systemic manner to study how it influences the texture and electrochemical behavior of the capacitor. Coconut shell-based carbon coated on nickel foams presented a surface area of 1567 m2 g−1, with micropores as well as mesopores widely distributed. The sample showed superior electrochemical performance, attaining 449 F g−1 at 1 A g−1 in 6 M LiNO3 aqueous solution. The solid-state symmetric supercapacitor device delivered a specific capacitance of 88 F g−1 at 1 A g−1 and a high energy density of 48.9 Whkg−1 at a power density of 1 kW kg−1. At a wide voltage window of 2.0 V, the sample was highly stable during the cycle test, showing a 92% capacitance retention at 2 A g−1 after cycling for 5000 times. The superior performance is due to the sample possessing great BET surface area, a good distribution of pores, and the usage of a suitable electrolyte. This facilitates an electrical double layer that can be deployed for applications to store energy.

γ-FeOOH and amorphous Ni–Mn hydroxide on carbon nanofoam paper electrodes for hybrid supercapacitors

2018 ◽  
Vol 6 (6) ◽  
pp. 2612-2624 ◽  
Author(s):  
Tuyen Nguyen ◽  
M. Fátima Montemor
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Rate Performance ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Hybrid Supercapacitors ◽  
Density Rate

High energy density, rate performance and long cycle life hybrid γ-FeOOH-carbon nanofoam paper∥amorphous Ni–Mn hydroxide-carbon nanofoam paper supercapacitors.

Potassium Pre-Inserted K1.04Mn8O16 Cathode Materials for Aqueous Li-Ion and Na-Ion Hybrid Capacitors

2019 ◽  
Author(s):  
Yamin Zhang ◽  
Lina Chen ◽  
Chongyang Hao ◽  
Xiaowen Zheng ◽  
Yixuan Guo ◽  
...  
Keyword(s):  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Potassium Ions ◽  
Tunnel Structure ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Li Ion ◽  
Power Densities ◽  
Hybrid Capacitors

For the applications of aqueous Li-ion hybrid capacitors and Na-ion hybrid capacitors, potassium ions are pre-inserted into MnO<sub>2</sub> tunnel structure, the as-prepared K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16</sub> materials consist of <a>nanoparticles</a> and nanorods were prepared by facile high-temperature solid-state reaction. <a></a>The as-prepared materials were well studied andthey show outstanding electrochemical behavior. We assembled hybrid supercapacitors with commercial activated carbon (YEC-8A) as anode and K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16 </sub>as cathode. It has high energy densities and power densities. Li-ion capacitors reach a high energy density of 127.61 Wh kg<sup>-1 </sup>at the power density of 99.86 W kg<sup>-1</sup> and Na-ion capacitor obtains 170.96 Wh kg<sup>-1 </sup>at 133.79 W kg<sup>-1</sup>. In addition, the <a>hybrid supercapacitor</a>s demonstrate excellent cycling performance which maintain 97 % capacitance retention for Li-ion capacitor and 85 % for Na-ion capacitor after 10,000 cycles.

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