Facile Construction of 3D Packing Porous Flower‐Like NiCo 2 O 4 @NiMoO 4 /rGO Hybrids as High‐Performance Supercapacitors with Large Areal Capacitance

2019 ◽  
Vol 7 (5) ◽  
pp. 1800940 ◽  
Author(s):  
Maofeng Zhang ◽  
Wenzhen Liu ◽  
Ran Han ◽  
Jun Xu ◽  
Zhenjie Sun ◽  
...  
Keyword(s):  
High Performance ◽  
Areal Capacitance ◽  
3D Packing

Construction of Hierarchical Ni(OH)2@CoMoO4 Nanoflake Composite for High-Performance Supercapacitors

NANO ◽  
2016 ◽  
Vol 11 (05) ◽  
pp. 1650050 ◽  
Author(s):  
Xueqing Li ◽  
Shuang-Yan Lin ◽  
Mingyi Zhang ◽  
Ge Jiang ◽  
Hong Gao
Keyword(s):  
Current Density ◽  
Electrode Material ◽  
High Performance ◽  
Synergetic Effect ◽  
Electrochemical Performances ◽  
Ni Foam ◽  
Areal Capacitance ◽  
Binder Free ◽  
Electrochemical Electrode

Hierarchical Ni(OH)2@CoMoO4 nanoflake composite on Ni foam was successfully constructed by electrodepositing Ni(OH)2 onto CoMoO4 nanoflake and investigated as binder-free electrodes for supercapacitor. The composite shows a large areal capacitance of 5.23[Formula: see text]F[Formula: see text]cm[Formula: see text] at current density of 8[Formula: see text]mA[Formula: see text]cm[Formula: see text], and a capacitance retention of 82.5% after 1000 cycles. The high electrochemical performances can be attributed to the hierarchical nanoflakes structure and the synergetic effect between Ni(OH)2 nanosheets and CoMoO4 nanoflakes. This work demonstrates that Ni(OH)2@CoMoO4 nanoflake composite is highly desirable for application as advanced electrochemical electrode material.

Self-formed porous Ni(OH)2 on Ni3S2/Ni foam during electrochemical cycling for high performance supercapacitor with ultrahigh areal capacitance

2019 ◽  
Vol 303 ◽  
pp. 148-156 ◽  
Author(s):  
Yan-Qiang Cao ◽  
Xu Qian ◽  
Wei Zhang ◽  
Min Li ◽  
Shan-Shan Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Ni Foam ◽  
Areal Capacitance ◽  
Electrochemical Cycling

scholarly journals Asymmetric Pseudocapacitors Based on Interfacial Engineering of Vanadium Nitride Hybrids

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1141 ◽  
Author(s):  
Hailan Su ◽  
Tuzhi Xiong ◽  
Qirong Tan ◽  
Fang Yang ◽  
Paul B. S. Appadurai ◽  
...  
Keyword(s):  
Current Density ◽  
High Performance ◽  
Electrode Materials ◽  
Vanadium Nitride ◽  
Mos2 Nanosheets ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Areal Capacitance ◽  
Interfacial Engineering ◽  
A Current

Vanadium nitride (VN) shows promising electrochemical properties as an energy storage devices electrode, specifically in supercapacitors. However, the pseudocapacitive charge storage in aqueous electrolytes shows mediocre performance. Herein, we judiciously demonstrate an impressive pseudocapacitor performance by hybridizing VN nanowires with pseudocapacitive 2D-layered MoS2 nanosheets. Arising from the interfacial engineering and pseudocapacitive synergistic effect between the VN and MoS2, the areal capacitance of VN/MoS2 hybrid reaches 3187.30 mF cm−2, which is sevenfold higher than the pristine VN (447.28 mF cm−2) at a current density of 2.0 mA cm−2. In addition, an asymmetric pseudocapacitor assembled based on VN/MoS2 anode and TiN coated with MnO2 (TiN/MnO2) cathode achieves a remarkable volumetric capacitance of 4.52 F cm−3 and energy density of 2.24 mWh cm−3 at a current density of 6.0 mA cm−2. This work opens a new opportunity for the development of high-performance electrodes in unfavorable electrolytes towards designing high areal-capacitance electrode materials for supercapacitors and beyond.

3D MnO2–graphene composites with large areal capacitance for high-performance asymmetric supercapacitors

Nanoscale ◽  
2013 ◽  
Vol 5 (15) ◽  
pp. 6790 ◽  
Author(s):  
Teng Zhai ◽  
Fuxin Wang ◽  
Minghao Yu ◽  
Shilei Xie ◽  
Chaolun Liang ◽  
...  
Keyword(s):  
High Performance ◽  
Asymmetric Supercapacitors ◽  
Areal Capacitance

Towards high areal capacitance, rate capability, and tailorable supercapacitors: Co3O4@polypyrrole core–shell nanorod bundle array electrodes

2018 ◽  
Vol 6 (39) ◽  
pp. 19058-19065 ◽  
Author(s):  
Longtao Ma ◽  
Huiqing Fan ◽  
Xinying Wei ◽  
Shengmei Chen ◽  
Qingzhao Hu ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Fiber ◽  
High Performance ◽  
Rate Capability ◽  
Core Shell ◽  
Areal Capacitance ◽  
Carbon Fiber Cloth ◽  
Nanorod Bundle

We report high-performance, flexible, and tailorable solid-state supercapacitors enabled by Co3O4@PPy nanorod bundle arrays immobilized on carbon fiber cloth (CFC).

Design and synthesis of 3D hierarchical NiCo2S4@MnO2 core–shell nanosheet arrays for high-performance pseudocapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (55) ◽  
pp. 44642-44647 ◽  
Author(s):  
Kaibing Xu ◽  
Qilong Ren ◽  
Qian Liu ◽  
Wenyao Li ◽  
Rujia Zou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Hybrid Materials ◽  
High Performance ◽  
Core Shell ◽  
Cyclic Stability ◽  
Areal Capacitance ◽  
Design And Synthesis ◽  
Nanosheet Arrays

3D hierarchical NiCo2S4@MnO2 hybrid materials have been successfully prepared for high-performance pseudocapacitors, which show outstanding electrochemical performance in supercapacitors such as high areal capacitance and good cyclic stability.

A new strategy for anchoring a functionalized graphene hydrogel in a carbon cloth network to support a lignosulfonate/polyaniline hydrogel as an integrated electrode for flexible high areal-capacitance supercapacitors

2019 ◽  
Vol 7 (10) ◽  
pp. 5819-5830 ◽  
Author(s):  
Dan Wu ◽  
Wenbin Zhong
Keyword(s):  
High Performance ◽  
High Mass ◽  
Carbon Cloth ◽  
Mass Loading ◽  
Functionalized Graphene ◽  
Interfacial Resistance ◽  
Areal Capacitance ◽  
New Strategy

Fully utilizing the space of CC allows achieving an electrode with high mass loading and low interfacial resistance for high-performance supercapacitors.

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