scholarly journals Micro-area investigation on electrochemical performance improvement with Co and Mn doping in PbO2 electrode materials

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 28949-28960
Author(s):  
Ze Lv ◽  
Zhen Chen ◽  
Qiang Yu ◽  
Wei Zhu ◽  
Hongjun You ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Performance Improvement ◽  
Electrode Materials ◽  
Scanning Electrochemical Microscopy ◽  
Mn Doping ◽  
Electrochemical Reactivity ◽  
Pbo2 Electrode ◽  
Electrochemical Microscopy

The causes of the increase in electrochemical reactivity are unveiled from a micro perspective through scanning electrochemical microscopy.

Local electrochemical activity of transition metal dichalcogenides and their heterojunctions on 3D-printed nanocarbon surfaces

Nanoscale ◽  
2021 ◽  
Author(s):  
Katarina A. Novčić ◽  
Christian Iffelsberger ◽  
Siowwoon Ng ◽  
Martin Pumera
Keyword(s):  
Transition Metal ◽  
Electrochemical Performance ◽  
Transition Metal Dichalcogenides ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Activity ◽  
Thermally Activated ◽  
Metal Dichalcogenides ◽  
3D Printed ◽  
Electrochemical Microscopy

MoS2 and WS2 and their heterojunctions are used to modify thermally activated 3D-printed nanocarbon structures. Herein, the local electrochemical performance for HER of the modified structures is demonstrated by scanning electrochemical microscopy.

Comparison of fast electron transfer kinetics at platinum, gold, glassy carbon and diamond electrodes using Fourier-transformed AC voltammetry and scanning electrochemical microscopy

2017 ◽  
Vol 19 (13) ◽  
pp. 8726-8734 ◽  
Author(s):  
Sze-yin Tan ◽  
Robert A. Lazenby ◽  
Kiran Bano ◽  
Jie Zhang ◽  
Alan M. Bond ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glassy Carbon ◽  
Fast Electron ◽  
Electrode Materials ◽  
Scanning Electrochemical Microscopy ◽  
Diamond Electrodes ◽  
Electron Transfer Kinetics ◽  
Transfer Rates ◽  
Complementary Techniques ◽  
Electrochemical Microscopy

Complementary techniques reveal new insights on electron transfer rates at different electrode materials.

Electrochemical performance improvement of N-doped graphene as electrode materials for supercapacitors by optimizing the functional groups

RSC Advances ◽  
2015 ◽  
Vol 5 (17) ◽  
pp. 12583-12591 ◽  
Author(s):  
Wei Li ◽  
Hong-Yan Lü ◽  
Xing-Long Wu ◽  
Hongyu Guan ◽  
Ying-Ying Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Performance Improvement ◽  
Functional Groups ◽  
Electrode Materials ◽  
Doped Graphene

The electrochemical properties of doped graphene as electrode materials for supercapacitors can be significantly enhanced by optimizing the surface nitrogen functional groups.

Poly(aniline-co-pyrrole)-coated Ni-doped manganese dioxide as electrode materials for supercapacitors

2020 ◽  
Vol 13 (02) ◽  
pp. 2051007
Author(s):  
Jie Dong ◽  
Qinghao Yang ◽  
Qiuli Zhao ◽  
Zhenzhong Hou ◽  
Yue Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Manganese Dioxide ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
Mass Ratio ◽  
Scan Rate ◽  
Poly Aniline ◽  
Inorganic And Organic

Electrode materials with a high specific capacitance, outstanding reversibility and excellent cycle stability are constantly pursued for supercapacitors. In this paper, we present an approach to improve the electrochemical performance by combining the advantages of both inorganic and organic. Ni-MnO2/PANi-co-PPy composites are synthesized, with the copolymer of aniline/pyrrole being coated on the surface of Ni-doped manganese dioxide nanospheres. The inorganic–organic composite enables a substantial increase in its specific capacitance and cycle stability. When the mass ratio of Ni-MnO2 to aniline and pyrrole mixed monomer is 1:5, the composite delivers high specific capacitance of 445.49[Formula: see text]F/g at a scan rate of 2[Formula: see text]mV/s and excellent cycle stability of 61.65% retention after 5000 cycles. The results indicate that the Ni-MnO2/PANi-co-PPy composites are promising electrode materials for future supercapacitors application.

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