In situ growth of urchin-like NiCo2S4 hexagonal pyramid microstructures on 3D graphene nickel foam for enhanced performance of supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 9446-9452 ◽  
Author(s):  
Xiaoli Wang ◽  
Xianjun Xia ◽  
Lemu Girma Beka ◽  
Weihua Liu ◽  
Xin Li
Keyword(s):  
Specific Capacitance ◽  
Hydrothermal Method ◽  
Nickel Foam ◽  
High Mass ◽  
In Situ Growth ◽  
Mass Loading ◽  
Rate Performance ◽  
3D Graphene ◽  
Hexagonal Pyramid

Urchin-like NiCo2S4 hexagonal pyramid microstructures have been successfully fabricated on 3-D graphene nickel foam by a two-step hydrothermal method. These achieve a rather high mass loading, with enhanced specific capacitance, rate performance and cycling stability.

scholarly journals High mass loading flower-like MnO2 on NiCo2O4 deposited graphene/nickel foam as high-performance electrodes for asymmetric supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (27) ◽  
pp. 16161-16172
Author(s):  
Jing Jin ◽  
Jie Ding ◽  
Xing Wang ◽  
Congcong Hong ◽  
Huaping Wu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Mass ◽  
Asymmetric Supercapacitor ◽  
Mass Loading ◽  
Asymmetric Supercapacitors ◽  
3D Graphene

A NiCo2O4/MnO2 heterostructure with high mass loading MnO2 microflowers was built on the surface of 3D graphene/nickel foam for the preparation of an asymmetric supercapacitor with splended energy density (45.9 Wh kg−1).

Boosting Rate Performance of Li–S Batteries under High-Mass-Loading Sulfur based on Hierarchical NCNT@Co-CoP Nanowires Integrated Electrode

2021 ◽  
Author(s):  
Jianbo Li ◽  
Wenfu Xie ◽  
Shimeng Zhang ◽  
Simin Xu ◽  
Mingfei Shao
Keyword(s):  
Storage Systems ◽  
High Mass ◽  
Mass Loading ◽  
Rate Performance ◽  
Next Generation ◽  
Practical Application ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium−sulfur batteries (Li–S) has been gradual becoming one of the most promising next-generation storage systems, but its practical application is still limited by the extremely low S loading as well...

Construction of Z-Scheme Bi3TaO7/Zn0.5Cd0.5S composites with high-efficiency for levofloxacin degradation under visible light irradiation

2021 ◽  
Author(s):  
Jingjing Xu ◽  
Yang liu ◽  
xueping li ◽  
Mindong Chen
Keyword(s):  
Visible Light ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
High Efficiency ◽  
Light Irradiation ◽  
In Situ Growth ◽  
Composite Photocatalysts ◽  
Photocatalytic Activities

Direct Z-scheme Bi3TaO7/Zn0.5Cd0.5S composite photocatalysts were successfully prepared via an in-situ growth hydrothermal method. The photocatalytic activities of composites were investigated by the degradation of levofloxacin under visible light. And...

scholarly journals Atomic Modulation of 3D Conductive Frameworks Boost Performance of MnO2 for Coaxial Fiber-Shaped Supercapacitors

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiaona Wang ◽  
Zhenyu Zhou ◽  
Zhijian Sun ◽  
Jinho Hah ◽  
Yagang Yao ◽  
...  
Keyword(s):  
Energy Density ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Superior Performance ◽  
High Mass ◽  
Mass Loading ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Cell Potential

Abstract Coaxial fiber-shaped supercapacitors are a promising class of energy storage devices requiring high performance for flexible and miniature electronic devices. Yet, they are still struggling from inferior energy density, which comes from the limited choices in materials and structure used. Here, Zn-doped CuO nanowires were designed as 3D framework for aligned distributing high mass loading of MnO2 nanosheets. Zn could be introduced into the CuO crystal lattice to tune the covalency character and thus improve charge transport. The Zn–CuO@MnO2 as positive electrode obtained superior performance without sacrificing its areal and gravimetric capacitances with the increasing of mass loading of MnO2 due to 3D Zn–CuO framework enabling efficient electron transport. A novel category of free-standing asymmetric coaxial fiber-shaped supercapacitor based on Zn0.11CuO@MnO2 core electrode possesses superior specific capacitance and enhanced cell potential window. This asymmetric coaxial structure provides superior performance including higher capacity and better stability under deformation because of sufficient contact between the electrodes and electrolyte. Based on these advantages, the as-prepared asymmetric coaxial fiber-shaped supercapacitor exhibits a high specific capacitance of 296.6 mF cm−2 and energy density of 133.47 μWh cm−2. In addition, its capacitance retention reaches 76.57% after bending 10,000 times, which demonstrates as-prepared device’s excellent flexibility and long-term cycling stability.

Rapid in situ growth of β-Ni(OH)2 nanosheet arrays on nickel foam as an integrated electrode for supercapacitors exhibiting high energy density

2020 ◽  
Vol 49 (15) ◽  
pp. 4956-4966 ◽  
Author(s):  
Jingbo Li ◽  
Yu Liu ◽  
Wei Cao ◽  
Nan Chen
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
In Situ Growth ◽  
Nanosheet Arrays

A rapid in situ method was employed to synthesize the β-Ni(OH)2@NF integrated electrode for a high performance ASC device.

In situ growth of Fe and Nb co-doped β-Ni(OH)2 nanosheet arrays on nickel foam for an efficient oxygen evolution reaction

2020 ◽  
Vol 7 (18) ◽  
pp. 3465-3474
Author(s):  
Junjie Pan ◽  
Shaoyun Hao ◽  
Xingwang Zhang ◽  
Rongxin Huang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
In Situ Growth ◽  
Nanosheet Arrays ◽  
Co Doped

Fe, Nb co-doped β-Ni(OH)2 electrode exhibited excellent OER performance with an overpotential of 294 mV at 100 mA cm−2.

scholarly journals In situ growth of hexagonal prism-like Ni(OH)2 microrods on nickel foam as binder-free electrodes

Ionics ◽  
2019 ◽  
Vol 25 (12) ◽  
pp. 5881-5888 ◽  
Author(s):  
Gang Li ◽  
Zhuoqing Chang ◽  
Tingyu Li ◽  
Kaiying Wang
Keyword(s):  
Nickel Foam ◽  
Hexagonal Prism ◽  
In Situ Growth ◽  
Binder Free
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