scholarly journals Cage-like MnO 2 -Mn 2 O 3 hollow spheres with high specific capacitance and high rate capability as supercapacitor material

2016 ◽  
Vol 219 ◽  
pp. 540-546 ◽  
Author(s):  
Shan Ji ◽  
Yuanyuan Ma ◽  
Hui Wang ◽  
Julian Key ◽  
Dan J.L. Brett ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Hollow Spheres ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
High Rate ◽  
High Rate Capability

Electrodeposition of manganese dioxide film on activated carbon paper and its application in supercapacitors with high rate capability

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 64187-64192 ◽  
Author(s):  
Yongfu Qiu ◽  
Pingru Xu ◽  
Bing Guo ◽  
Zhiyu Cheng ◽  
Hongbo Fan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Manganese Dioxide ◽  
Specific Capacitance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
High Rate ◽  
Carbon Paper ◽  
High Rate Capability ◽  
First Time ◽  
Dioxide Film

The composite MnO2/ACP is reported for the first time and it shows high specific capacitance and remarkable rate capability.

A cost effective, highly porous, manganese oxide/carbon supercapacitor material with high rate capability

2016 ◽  
Vol 4 (15) ◽  
pp. 5390-5394 ◽  
Author(s):  
Rongfang Wang ◽  
Yuanyuan Ma ◽  
Hui Wang ◽  
Julian Key ◽  
Dan Brett ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Carbon Material ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Cost Effective ◽  
High Rate ◽  
Cycle Stability ◽  
High Rate Capability ◽  
Highly Porous

A porous, cube-shaped, Mn2O3/carbon material has been prepared and it shows a high specific capacitance of 349.6 F g−1 at 50 mA g−1 and excellent long-term cycle stability after 2000 cycles.

Mn3O4 hollow spheres for lithium-ion batteries with high rate and capacity

2014 ◽  
Vol 2 (13) ◽  
pp. 4627-4632 ◽  
Author(s):  
Guoqiang Jian ◽  
Yunhua Xu ◽  
Li-Chung Lai ◽  
Chunsheng Wang ◽  
Michael R. Zachariah
Keyword(s):  
Lithium Ion Batteries ◽  
Hollow Spheres ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability

This work focuses on development of Mn3O4 hollow spheres with high cycling capacity and high rate capability in lithium ion batteries.

Hierarchical core/shell structure of MnO2@polyaniline composites grown on carbon fiber paper for application in pseudocapacitors

2015 ◽  
Vol 17 (44) ◽  
pp. 29874-29879 ◽  
Author(s):  
MinHo Yang ◽  
Seok Bok Hong ◽  
Bong Gill Choi
Keyword(s):  
Carbon Fiber ◽  
Shell Structure ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
High Rate ◽  
Core Shell ◽  
High Rate Capability ◽  
Carbon Fiber Paper ◽  
Core Shell Structure ◽  
Polyaniline Composites

Hierarchical core/shell structured arrays of MnO2@polyaniline nanosheets synthesized on the surface of carbon fiber paper, showed high specific capacitance, high rate capability, and good cycle life.

High-rate capability and long-term cycling of self-assembled hierarchical Fe3O4/carbon hollow spheres through interfacial control

2019 ◽  
Vol 7 (28) ◽  
pp. 16720-16727 ◽  
Author(s):  
Jing Huang ◽  
Songpu Cheng ◽  
Yuxi Chen ◽  
Zhanglong Chen ◽  
Hao Luo ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Hollow Spheres ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Oxide Interfaces ◽  
Carbon Hollow Spheres ◽  
Self Assembled

Nowadays it remains a big challenge to achieve high-rate capability and long-term cycling of metal oxide anodes for secondary batteries, due to large volumetric variation-induced unstable electrolyte–metal oxide interfaces.

Homogeneous Growth of Ni(OH)2 Nanoparticle on Graphene Nanosheet for High-Performance Supercapacitor Electrode Material

2016 ◽  
Vol 852 ◽  
pp. 921-927 ◽  
Author(s):  
Huan Lin ◽  
Dong Lin Zhao ◽  
Ran Ran Yao ◽  
Zhao Hui Qiang ◽  
Wan Xin Zhang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
High Performance ◽  
Electrochemical Impedance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Chemical Precipitation ◽  
High Energy ◽  
High Rate ◽  
Supercapacitor Electrode ◽  
Graphene Nanosheet

A homogeneous Ni (OH)2/graphene nanosheet (GNS) nanocomposite with excellent supercapacitive performance has been synthesized by a facile chemical precipitation. The Ni (OH)2/GNS nanocomposite presented an ideal morphology with the nanosized Ni (OH)2 particles homogeneously growing on the GNS. Its microstructure, morphology were investigated by XRD, SEM and TEM. The electrochemical performance of the Ni (OH)2/GNS nanocomposite was test by cyclic voltammetry, galvanostatic charge−discharge and electrochemical impedance spectroscopy techniques. The homogeneous Ni (OH)2/GNS nanocomposite exhibited a high specific capacitance of 1667 F/g at a current density of 1A/g and maintained a good stability in 5000 cycles, suggesting that it can be a promising candidate for supercapacitor. The high specific capacitance and remarkable rate capability are promising for applications in supercapacitors with both high energy and power densities. The Ni (OH)2/GNS nanocomposite exhibited large specific capacitance, high rate capability and good cycling stability.

A molecular engineering approach to pore-adjustable nanoporous carbons with narrow distribution for high-performance supercapacitors

2019 ◽  
Vol 55 (16) ◽  
pp. 2305-2308 ◽  
Author(s):  
Sheng Lei ◽  
Yun Lu ◽  
Xiaofang Zhang ◽  
Pengyuan Gao ◽  
Xun Cui ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
High Performance ◽  
Rate Capability ◽  
Molecular Engineering ◽  
High Rate ◽  
Porous Carbons ◽  
High Rate Capability ◽  
Nanoporous Carbons ◽  
Engineering Approach

The space-confined twin-polymerization of silanes induces large-micropores and/or small-mesopores into porous carbons with large specific capacitance and high rate capability.

scholarly journals A porous graphene–NiFe2O4 nanocomposite with high electrochemical performance and high cycling stability for energy storage applications

2020 ◽  
Vol 2 (9) ◽  
pp. 4229-4241 ◽  
Author(s):  
Meenaketan Sethi ◽  
U. Sandhya Shenoy ◽  
D. Krishna Bhat
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Solvothermal Synthesis ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Cycling Stability ◽  
High Rate ◽  
High Rate Capability ◽  
Porous Graphene ◽  
Energy Storage Applications

Solvothermal synthesis of a porous graphene–NiFe2O4 nanocomposite exhibiting high specific capacitance and high rate capability along with high cycling stability.

Macroscopic porous MnO2 aerogels for supercapacitor electrodes

2016 ◽  
Vol 3 (8) ◽  
pp. 1043-1047 ◽  
Author(s):  
Kongliang Xu ◽  
Xuedong Zhu ◽  
Ping She ◽  
Yinxing Shang ◽  
Hang Sun ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability

Supercapacitor electrodes fabricated from macroscopic porous MnO2 aerogels have demonstrated enhanced specific capacitance, high rate capability and excellent cycling durability.

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