Facile synthesis of single-crystalline NiO nanosheet arrays on Ni foam for high-performance supercapacitors

CrystEngComm ◽  
2014 ◽  
Vol 16 (14) ◽  
pp. 2878-2884 ◽  
Author(s):  
Ming Huang ◽  
Fei Li ◽  
Jun Yi Ji ◽  
Yu Xin Zhang ◽  
Xiao Li Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Cost Effective ◽  
Ni Foam ◽  
Single Crystalline ◽  
Nanosheet Arrays ◽  
Binder Free ◽  
Hydrothermal Approach ◽  
Good Rate Capability

Single-crystalline NiO nanosheet arrays on Ni foam as a binder-free electrode for high-performance supercapacitors, fabricated by a facile and cost-effective hydrothermal approach, exhibit a high specific capacitance, good rate capability, and excellent cycling stability.

A one-step, cost-effective green method to in situ fabricate Ni(OH)2 hexagonal platelets on Ni foam as binder-free supercapacitor electrode materials

2015 ◽  
Vol 3 (5) ◽  
pp. 1953-1960 ◽  
Author(s):  
Lingjie Li ◽  
Jing Xu ◽  
Jinglei Lei ◽  
Jie Zhang ◽  
Frank McLarnon ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Cost Effective ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
One Step ◽  
Binder Free ◽  
Supercapacitor Electrode Materials

The Ni(OH)2 hexagonal platelets were in situ fabricated on Ni foam as a binder-free supercapacitor electrode material with high performance and excellent cycling stability by a one-step, cost-effective, green hydrothermal treatment of three-dimensional (3D) Ni foam in a 15 wt% H2O2 aqueous solution.

Facile synthesis of a metal–organic framework-derived Mn2O3 nanowire coated three-dimensional graphene network for high-performance free-standing supercapacitor electrodes

2016 ◽  
Vol 4 (21) ◽  
pp. 8283-8290 ◽  
Author(s):  
Dong Ji ◽  
Hu Zhou ◽  
Jian Zhang ◽  
Yuanyuan Dan ◽  
Hongxun Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Free Standing ◽  
Metal Organic ◽  
Oxide Composites ◽  
First Time ◽  
Good Rate Capability

3DGN and MOF-derived metal oxide composites as free-standing electrodes for supercapacitors have been reported for the first time which exhibit a high specific capacitance, good rate capability and excellent long cycle stability.

scholarly journals Directly Grown Multiwall Carbon Nanotube and Hydrothermal MnO2 Composite for High-Performance Supercapacitor Electrodes

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 703 ◽  
Author(s):  
Li Li ◽  
Lihui Chen ◽  
Weijin Qian ◽  
Fei Xie ◽  
Changkun Dong
Keyword(s):  
Charge Transfer ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Charge Transfer Resistance ◽  
Multiwall Carbon Nanotube ◽  
Ni Foam ◽  
Multiwalled Carbon ◽  
Transfer Resistance ◽  
Supercapacitor Application

MnO2–MWNT–Ni foam supercapacitor electrodes were developed based on directly grown multiwalled carbon nanotubes (MWNTs) and hydrothermal MnO2 nanostructures on Ni foam substrates. The electrodes demonstrated excellent electrochemical and battery properties. The charge transfer resistance dropped 88.8% compared with the electrode without MWNTs. A high specific capacitance of 1350.42 F·g−1 was reached at the current density of 6.5 A·g−1. The electrode exhibited a superior rate capability with 92.5% retention in 25,000 cycles. Direct MWNT growth benefits the supercapacitor application for low charge transfer resistance and strong MWNT–current collector binding.

Synthesis of rGO/PS compound with sandwich structure on Ni foam as binder-free electrode for supercapacitor

2017 ◽  
Vol 10 (04) ◽  
pp. 1750032 ◽  
Author(s):  
Guangsheng Luo ◽  
Haifu Huang ◽  
Zhenzhi Cheng ◽  
Chenglong Lei ◽  
Xiaoshan Wu ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Sandwich Structure ◽  
3D Structure ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Dip Coating ◽  
Layer By Layer ◽  
Ni Foam ◽  
Reduced Graphene ◽  
Binder Free

Here, we demonstrate the design of a binder-free reduced graphene oxide (rGO) and polystyrene colloidal microsphere (PS) compound with rGO/PS/rGO sandwich structure and application for supercapacitors electrode. rGO and PS are alternately deposited into 3D Ni foam by a simple layer-by-layer assembly based on dip-coating. The interlayer space of rGO film expanded by PS microsphere and 3D structure of compound electrode can effectively shorten diffusion pathways of ions and accelerate the transport of ions into graphene sheets. The resulting rGO/PS compound electrode exhibits a high specific capacitance with 164.7[Formula: see text]F g[Formula: see text], and outstanding rate capability. It is found that the specific capacitance is dependent on the number of rGO film layers in rGO/PS compound electrode.

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.

Interface-engineered hematite nanocones as binder-free electrodes for high-performance lithium-ion batteries

2018 ◽  
Vol 6 (28) ◽  
pp. 13968-13974 ◽  
Author(s):  
Lei Wang ◽  
Kun Liang ◽  
Guanzhi Wang ◽  
Yang Yang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
One Dimensional ◽  
Binder Free ◽  
Enhanced Electrochemical Performance ◽  
Good Rate Capability

One-dimensional α-Fe2O3 nanocone arrays exhibited an enhanced electrochemical performance with high specific capacity, good rate capability, and excellent cyclability.

scholarly journals One-Step Synthesis of Self-Supported Ni3S2/NiS Composite Film on Ni Foam by Electrodeposition for High-Performance Supercapacitors

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1718 ◽  
Author(s):  
Haifu Huang ◽  
Xiaoli Deng ◽  
Liqing Yan ◽  
Geng Wei ◽  
Wenzheng Zhou ◽  
...  
Keyword(s):  
Composite Film ◽  
Active Sites ◽  
High Performance ◽  
High Current Density ◽  
Rate Capability ◽  
Ni Foam ◽  
Active Materials ◽  
Molar Ratios ◽  
One Step ◽  
Good Rate Capability

Herein, a facile one-step electrodeposition route was presented for preparing Ni3S2/NiS composite film on Ni foam substrate (denoted as NiSx/NF). The NiSx granular film is composed of mangy interconnected ultra-thin NiSx nanoflakes with porous structures. When applied as electrodes for supercapacitors, the ultra-thin nanoflakes can provide more active sites for redox reaction, and the interconnected porous structure has an advantage for electrolyte ions to penetrate into the inner space of active materials quickly. As expected, the obtained NiSx/NF sample exhibited high gravimetric capacitance of 1649.8 F·g−1 and areal capacitance of 2.63 F·cm−2. Furthermore, a gravimetric capacitance of 1120.1 F·g−1 can be maintained at a high current density of 20 mA·cm−2, suggesting a good rate capability. The influence of the different molar ratios of electrodeposition electrolyte (NiNO3 and thiourea) on the morphology and electrochemical properties of NiSx/NF sample was investigated to provide an optimum route for one-step electrodeposition of Ni3S2/NiS composite film. The outstanding performance indicated the Ni3S2/NiS composite film on Ni foam has great potential as an electrode material for supercapacitors.

In situ fabrication of three-dimensional, ultrathin graphite/carbon nanotube/NiO composite as binder-free electrode for high-performance energy storage

2015 ◽  
Vol 3 (2) ◽  
pp. 624-633 ◽  
Author(s):  
Wenwen Liu ◽  
Congxiang Lu ◽  
Xingli Wang ◽  
Kun Liang ◽  
Beng Kang Tay
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Three Dimensional ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
In Situ Fabrication ◽  
Binder Free ◽  
Graphite Film

3D ultrathin graphite film/CNTs/NiO composite as the electrode material for energy storage exhibits high specific capacitance/capacity, excellent rate capability and good cycle stability.

Hybrid MnO2@NiCo2O4 nanosheets for high performance asymmetric supercapacitors

2018 ◽  
Vol 5 (6) ◽  
pp. 1378-1385 ◽  
Author(s):  
Depeng Zhao ◽  
Xiang Wu ◽  
Chuanfei Guo
Keyword(s):  
Specific Capacitance ◽  
Current Density ◽  
High Performance ◽  
High Specific Capacitance ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Hydrothermal Approach ◽  
Nico2o4 Nanosheets ◽  
A Current

In this work, hybrid MnO2@NiCo2O4 nanosheets grown on Ni foam have been synthesized through a facile hydrothermal approach. The MnO2@NiCo2O4 electrode delivers a high specific capacitance of 3086 mF cm−2 at a current density of 2 mA cm−2.

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