Hierarchical CuCo2O4 nanowire@NiCo2O4 nanosheet core/shell arrays for high-performance supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (85) ◽  
pp. 69636-69641 ◽  
Author(s):  
Kang Zhang ◽  
Wei Zeng ◽  
Guanhua Zhang ◽  
Sucheng Hou ◽  
Fei Wang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
High Performance ◽  
Core Shell ◽  
Ni Foam

In this work, CuCo2O4 nanowire@NiCo2O4 nanosheet core/shell arrays were designed and synthesized on Ni foam. Taking the advantage of the synergistic effect and 3D core/shell nanostructure, the hybrid electrode exhibited a notable increased electrochemical performance.

Hierarchical 3D NiFe2O4@MnO2 core–shell nanosheet arrays on Ni foam for high-performance asymmetric supercapacitors

2018 ◽  
Vol 47 (7) ◽  
pp. 2266-2273 ◽  
Author(s):  
Xinyang Zhang ◽  
Ziqing Zhang ◽  
Shuanggan Sun ◽  
Qiushi Sun ◽  
Xiaoyang Liu
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
High Performance ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays

Hierarchical NiFe2O4@MnO2 core–shell nanosheet arrays synthesized via a two-step hydrothermal method with successive annealing exhibited outstanding electrochemical performance.

Electrodeposited nickel cobalt sulfide nanosheet arrays on 3D-graphene/Ni foam for high-performance supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 100106-100113 ◽  
Author(s):  
Yang Wang ◽  
Lidong Wang ◽  
Bing Wei ◽  
Qinghua Miao ◽  
Yinan Yuan ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
High Performance ◽  
Cobalt Sulfide ◽  
Ni Foam ◽  
3D Graphene ◽  
Nickel Cobalt ◽  
Excellent Electrochemical Performance ◽  
Nanosheet Arrays ◽  
Electrodeposited Nickel

With the synergistic effect of 3D RGO and Ni–Co–S nanosheets, a Ni–Co–S/RGO/NF electrode exhibits excellent electrochemical performance.

scholarly journals Advanced binder-free electrodes based on CoMn2O4@Co3O4 core/shell nanostructures for high-performance supercapacitors

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31594-31602 ◽  
Author(s):  
Xiaobo Chen ◽  
Xiao Liu ◽  
Yongxu Liu ◽  
Yameng Zhu ◽  
Guoce Zhuang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Cycling Stability ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Shell Nanostructures ◽  
Binder Free

CoMn2O4@Co3O4 core/shell arrays on Ni foam exhibit outstanding electrochemical performance for asymmetric supercapacitors with respect to high specific capacitance and high cycling stability.

The synthesis of hierarchical ZnCo2O4@MnO2core–shell nanosheet arrays on Ni foam for high-performance all-solid-state asymmetric supercapacitors

2018 ◽  
Vol 5 (3) ◽  
pp. 597-604 ◽  
Author(s):  
Deyang Yu ◽  
Ziqing Zhang ◽  
Ya'nan Meng ◽  
Yifei Teng ◽  
Yunpeng Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
High Performance ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays

ZnCo2O4@MnO2core–shell nanosheet arrays synthesizedviaa two-step hydrothermal method exhibited an extraordinary electrochemical performance.

Tunable design of layered CuCo2O4 nanosheets@MnO2 nanoflakes core–shell arrays on Ni foam for high-performance supercapacitors

2015 ◽  
Vol 3 (43) ◽  
pp. 21528-21536 ◽  
Author(s):  
Min Kuang ◽  
Xiao Ying Liu ◽  
Fan Dong ◽  
Yu Xin Zhang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Fine Tuning ◽  
Core Shell ◽  
Ni Foam ◽  
Operation Temperature ◽  
Excellent Electrochemical Performance

Layered CuCo2O4 nanosheets@MnO2 nanoflakes core–shell arrays (CuCo2O4@MnO2 CAs) on Ni foam have been uniformly synthesized by fine tuning the operation temperature, exhibiting superior capacitance and excellent electrochemical performance stability.

Morphology and Structure Induced Co3O4 Nanowires High-Performance Supercapacitor Electrode Material

2021 ◽  
Vol 16 (6) ◽  
pp. 1005-1010
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Yucai Li ◽  
Shiwei Song
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Structural Characteristics ◽  
High Porosity ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
Morphology And Structure ◽  
Hydrothermal Approach ◽  
Large Capacitance ◽  
Superior Cycling Stability

The electrochemical performance of the material depends heavily on the morphologies and structural characteristics of the material. Co3O4 samples show the remarkable electrochemical performance owing to the high porosity, appropriate pore size distribution and novel architecture and the effect of NH4F for morphology. Co3O4 nanowires grown on Ni foam have been synthesized through a facile hydrothermal approach, revealing large capacitance of 2178.4 mF cm−2 at the current density of 2 mA cm−2 and superior cycling stability.

Hierarchical coral-like MnCo2O4.5@Co-Ni LDH composites on Ni foam as promising electrodes for high-performance supercapacitor

2021 ◽  
Author(s):  
yajun JI ◽  
Fei Chen ◽  
Shufen Tan ◽  
Fuyong Ren
Keyword(s):  
Electrochemical Performance ◽  
Metal Oxides ◽  
High Performance ◽  
High Capacity ◽  
Rate Capability ◽  
Negative Electrode ◽  
High Energy ◽  
Hybrid Nanostructures ◽  
High Energy Density ◽  
Ni Foam

Abstract Transition metal oxides are generally designed as hybrid nanostructures with high performance for supercapacitors by enjoying the advantages of various electroactive materials. In this paper, a convenient and efficient route had been proposed to prepare hierarchical coral-like MnCo2O4.5@Co-Ni LDH composites on Ni foam, in which MnCo2O4.5 nanowires were enlaced with ultrathin Co-Ni layered double hydroxides nanosheets to achieve high capacity electrodes for supercapacitors. Due to the synergistic effect of shell Co-Ni LDH and core MnCo2O4.5, the outstanding electrochemical performance in three-electrode configuration was triggered (high area capacitance of 5.08 F/cm2 at 3 mA/cm2 and excellent rate capability of maintaining 61.69 % at 20 mA/cm2), which is superior to those of MnCo2O4.5, Co-Ni LDH and other metal oxides based composites reported. Meanwhile, the as-prepared hierarchical MnCo2O4.5@Co-Ni LDH electrode delivered improved electrical conductivity than that of pristine MnCo2O4.5. Furthermore, the as-constructed asymmetric supercapacitor using MnCo2O4.5@Co-Ni LDH as positive and activated carbon as negative electrode presented a rather high energy density of 220 μWh/cm2 at 2400 μW/cm2 and extraordinary cycling durability with the 100.0 % capacitance retention over 8000 cycles at 20 mA/cm2, demonstrating the best electrochemical performance compared to other asymmetric supercapacitors using metal oxides based composites as positive electrode material. It can be expected that the obtained MnCo2O4.5@Co-Ni LDH could be used as the high performance and cost-effective electrode in supercapacitors.

Direct growth of nickel terephthalate on Ni foam with large mass-loading for high-performance supercapacitors

2017 ◽  
Vol 5 (36) ◽  
pp. 19323-19332 ◽  
Author(s):  
Qiulin Chen ◽  
Shuijin Lei ◽  
Peiqin Deng ◽  
Xiuling Ou ◽  
Lianfu Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Large Mass ◽  
High Mass ◽  
Mass Loading ◽  
Ni Foam ◽  
Direct Growth

Nickel terephthalate is grown on Ni foam with high mass-loading and its electrochemical performance can be greatly enhanced by polyaniline electrodeposition.

Hierarchical porous NiCo2O4 nanograss arrays grown on Ni foam as electrode material for high-performance supercapacitors

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20234-20238 ◽  
Author(s):  
Zhenyu Wang ◽  
Yuefei Zhang ◽  
Yonghe Li ◽  
Haoyu Fu
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
Electrode Material ◽  
High Performance ◽  
Ni Foam ◽  
Hierarchical Porous ◽  
One Step ◽  
Calcination Treatment

A novel hierarchical porous NiCo2O4 nanograss array directly grown on Ni foam has been constructed via a simple one-step hydrothermal method combined with a calcination treatment, and possessed high electrochemical performance.

Synthesis of hierarchical Ni3S2@NiMoO4 core-shell nanosheet arrays on Ni foam for high-performance asymmetric supercapacitors

2021 ◽  
Vol 44 ◽  
pp. 103459
Author(s):  
Zhengjie Xie ◽  
Dianfeng Dai ◽  
Ying Xue ◽  
Yixin Li ◽  
Liangyu Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays
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