scholarly journals Hierarchical Core/Shell Structured Ag@Ni(OH)2 Nanospheres as Binder-Free Electrodes for High Performance Supercapacitors

Crystals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 118
Author(s):  
Sa Lv ◽  
Xuefeng Chu ◽  
Fan Yang ◽  
Huan Wang ◽  
Jia Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Copper Substrate ◽  
High Specific Capacitance ◽  
Electrochemical Reactions ◽  
Galvanic Replacement ◽  
Active Electrode ◽  
Step Process ◽  
Copper Foam ◽  
Binder Free ◽  
Enhanced Electrochemical Performance

Hierarchical Ag@Ni(OH)2 nanospheres were achieved directly on copper foam substrate through a convenient two-step process. Ag nanoflowers were formed on copper substrate by galvanic replacement technology between AgNO3 and copper foam followed by electrodeposition of a layer of Ni(OH)2. Ag nanostructures as cores not only dominated the final morphology of the composites, but also improved the electrical conductivity, increased the specific surface area of the active electrode material, and even directly participated in the electrochemical reactions. The resulted Ag@Ni(OH)2 nanospheres could be directly used as high-performance binder-free electrodes and exhibited enhanced electrochemical performance with a high specific capacitance of 1.864 F cm−2 and long cycling lifespans of 90.43% capacity retaining after 3000 cycles.

scholarly journals Nanosized CoO Loaded on Copper Foam for High-Performance, Binder-Free Lithium-Ion Batteries

Nanomaterials ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 183 ◽  
Author(s):  
Mingna Liao ◽  
Qilun Zhang ◽  
Fengling Tang ◽  
Zhiwei Xu ◽  
Xin Zhou ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Copper Foam ◽  
Binder Free

Construction of leaf-like CuO–Cu2O nanocomposites on copper foam for high-performance supercapacitors

2017 ◽  
Vol 46 (10) ◽  
pp. 3318-3324 ◽  
Author(s):  
Dong He ◽  
Guanda Wang ◽  
Guolong Liu ◽  
Hui Suo ◽  
Chun Zhao
Keyword(s):  
High Performance ◽  
Supercapacitor Electrode ◽  
Copper Foam ◽  
One Step ◽  
Binder Free ◽  
Anodization Method

Leaf-like CuO–Cu2O nanosheets have been prepared on copper foam by a one-step simple anodization method, which can be used as an advanced binder-free supercapacitor electrode.

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.

scholarly journals A Facile Synthesis of PbS-G QDs Nanocomposite as Electrode Material With Enhanced Energy Density for High Performance Supercapattery Application

2021 ◽  
Author(s):  
G. Suganya ◽  
M. Arivanandhan ◽  
Kalpana Gopalakrishnan
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
High Performance ◽  
Specific Capacity ◽  
Analytical Techniques ◽  
Active Electrode ◽  
High Specific Capacity ◽  
Power Densities ◽  
Enhanced Electrochemical Performance ◽  
Discharge Curves

Abstract Bare PbS QDs and PbS-GQDs nanocomposite were prepared by chemical methods for supercapattery application and characterized by suitable analytical techniques confirming the formation of PbS-GQDs nanocomposite. The electrochemical performance of the fabricated electrodes showed that the PbS-GQDs nanocomposite exhibited high specific capacity, energy and power densities of 577.94 C g-1 , 166.45 Wh kg-1 and 576.01 W kg-1 respectively at 2 A g-1 compared to that of bare PbS QDs. The enhanced electrochemical performance of PbS-GQDs can be associated with the conductive platform provided by synergistic effect of GQDs. The nonlinearity in charge and discharge curves confirms the supercapattery behaviour of the nanocomposite. Also, PbS-G QDs nanocomposite electrode showed highly cyclic stability compared to bare PbS QDs after 5000 cycles. The results emphasize the potential of PbS-G QDs nanocomposite as a stable active electrode material for energy storage application.

Nitrogen/oxygen co-doped monolithic carbon electrodes derived from melamine foam for high-performance supercapacitors

2018 ◽  
Vol 6 (36) ◽  
pp. 17730-17739 ◽  
Author(s):  
Rui Zhang ◽  
Xiangxia Jing ◽  
Yanting Chu ◽  
Lei Wang ◽  
Wenjun Kang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Carbon Electrodes ◽  
Binder Free ◽  
Co Doped ◽  
Melamine Foam

A novel nitrogen/oxygen co-doped carbon sponge (NOCS) is directly applied as a monolithic binder-free electrode for supercapacitors. It exhibits a high specific capacitance and excellent electrochemical cyclability.

Sign in / Sign up

Export Citation Format

Share Document