Hierarchical NiCo-LDH/NiCoP@NiMn-LDH hybrid electrodes on carbon cloth for excellent supercapacitors

2018 ◽  
Vol 6 (31) ◽  
pp. 15040-15046 ◽  
Author(s):  
Haoyan Liang ◽  
Jinghuang Lin ◽  
Henan Jia ◽  
Shulin Chen ◽  
Junlei Qi ◽  
...  
Keyword(s):  
Life Span ◽  
High Performance ◽  
Rational Design ◽  
Carbon Cloth ◽  
Active Materials ◽  
Electrochemically Active ◽  
Long Life

To realize high-performance and long life span supercapacitors, highly electrochemically active materials and rational design of structure are highly desirable.

Design and synthesis of hierarchical mesoporous WO3-MnO2 composite nanostructures on carbon cloth for high-performance supercapacitors

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Pragati A. Shinde ◽  
Vaibhav C. Lokhande ◽  
Amar M. Patil ◽  
Taeksoo Ji ◽  
Chandrakant D. Lokhande
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Rational Design ◽  
Electrode Materials ◽  
Mesoporous Structure ◽  
Carbon Cloth ◽  
Power Performance ◽  
Active Electrode ◽  
Composite Nanostructures ◽  
Design And Synthesis

AbstractTo enhance the energy density and power performance of supercapacitors, the rational design and synthesis of active electrode materials with hierarchical mesoporous structure is highly desired. In the present work, fabrication of high-performance hierarchical mesoporous WO

scholarly journals Engineering Ternary Copper-Cobalt Sulfide Nanosheets as High-performance Electrocatalysts toward Oxygen Evolution Reaction

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 459 ◽  
Author(s):  
Heng Luo ◽  
Hang Lei ◽  
Yufei Yuan ◽  
Yongyin Liang ◽  
Yi Qiu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
High Performance ◽  
Rational Design ◽  
Renewable Energy Sources ◽  
Cobalt Sulfide ◽  
Carbon Cloth

The rational design and development of the low-cost and effective electrocatalysts toward oxygen evolution reaction (OER) are essential in the storage and conversion of clean and renewable energy sources. Herein, a ternary copper-cobalt sulfide nanosheets electrocatalysts (denoted as CuCoS/CC) for electrochemical water oxidation has been synthesized on carbon cloth (CC) via the sulfuration of CuCo-based precursors. The obtained CuCoS/CC reveals excellent electrocatalytic performance toward OER in 1.0 M KOH. It exhibits a particularly low overpotential of 276 mV at current density of 10 mA cm−2, and a small Tafel slope (58 mV decade−1), which is superior to the current commercialized noble-metal electrocatalysts, such as IrO2. Benefiting from the synergistic effect of Cu and Co atoms and sulfidation, electrons transport and ions diffusion are significantly enhanced with the increase of active sites, thus the kinetic process of OER reaction is boosted. Our studies will serve as guidelines in the innovative design of non-noble metal electrocatalysts and their application in electrochemical water splitting

Three-Layer Sulfur Cathode with a Conductive Material-Free Middle Layer

2020 ◽  
Vol 20 (8) ◽  
pp. 4943-4948
Author(s):  
Jukyoung Kang ◽  
Jong Won Park ◽  
Seok Kim ◽  
Yongju Jung
Keyword(s):  
High Performance ◽  
Rational Design ◽  
Unique Feature ◽  
Specific Capacity ◽  
Middle Layer ◽  
Sulfur Cathode ◽  
Active Materials ◽  
Conductive Materials ◽  
Sulfur Layer ◽  
Sulfur Cathodes

An ingenious design for a three-layer sulfur cathode is demonstrated, in which the pure sulfur layer is sandwiched between carbon nanotube (CNT) films. The unique feature of this particular model is that the sulfur layer does not contain any conductive materials, and therefore, the top CNT film of the prepared three-layer CNT/S/CNT electrode is electrically isolated from the bottom CNT film. Scanning electron microscopy studies revealed that the three-layer cathode was transformed into a single CNT cathode, with proximate contact between the two CNT films in the upper plateau of the first discharge. The lithium–sulfur cells employing a CNT/S/CNT cathode exhibited remarkably enhanced performance in terms of the specific capacity, rate property, and cycling stability compared to the cells with a sulfur-coated CNT cathode. This can mainly be attributed to the top CNT film, which serves not only as an interlayer to trap the migrating polysulfides, but also as an electrode to facilitate the redox reaction of active materials. Such an innovative approach is promising as it may promote the rational design of high-performance sulfur cathodes.

Mn3O4 Nanosheets Decorated on Graphene Modified Carbon Cloth with Improved Pseudocapacitive Performance

2020 ◽  
Vol 861 ◽  
pp. 284-288
Author(s):  
Zhen Jun Dou ◽  
Zong Yi Qin
Keyword(s):  
Electrochemical Performance ◽  
Manganese Oxide ◽  
Structural Stability ◽  
Current Density ◽  
High Performance ◽  
Graphene Layer ◽  
Carbon Cloth ◽  
Active Materials ◽  
Metal Bonds ◽  
A Current

Mn3O4 nanosheets were deposited electrochemically on graphene modified carbon cloth (G–CC). The graphene layer improved significantly the hydrophilic property of carbon cloth and its compatibility with active materials, as a result, lower resistance and better structural stability were obtained for Mn3O4/G–CC compared with those for the electrode based on neat carbon cloth. Furthermore, the Mn3O4/G–CC possessed a capacitance of 1335 mF cm–2 at a current density of 2 mA cm−2, and a capacitance retention of up to 88 % after 2000 cycles at 10 mA cm–2. It is believed that manganese oxide was anchored strongly on graphene layer through C–O–metal bonds, and the graphene layer on the surface of the CC could serve as elastic buffering layers to release the strain within manganese oxide, resulting the remarkable improvements in electrochemical performance. These excellent characteristics make this kind of the composites promising candidates as high performance electrodes for supercapacitor.

High-performance flexible supercapattery enables by binder-free two-dimensional mesoporous ultrathin nickel-ferrite nanosheets

2021 ◽  
Author(s):  
Jianguo Xi ◽  
Muhammad Sufyan Javed ◽  
Sumreen Asim ◽  
Muhammad Idrees ◽  
Syed Shoaib Ahmad Shah ◽  
...  
Keyword(s):  
Nickel Ferrite ◽  
High Performance ◽  
Ferrite Nanoparticles ◽  
Two Dimensional ◽  
Active Materials ◽  
Electrochemically Active ◽  
Nickel Ferrite Nanoparticles ◽  
Binder Free

To accomplish an efficient and high-performance flexible supercapattery, electrochemically active materials with multicomponent and rational morphological architectures are highly enviable. Herein, we demonstrated the dual-morphology based mesoporous nickel-ferrite nanoparticles embedded...

Electrochemically active separators with excellent catalytic ability toward high-performance Li–S batteries

2018 ◽  
Vol 6 (25) ◽  
pp. 11694-11699 ◽  
Author(s):  
Maoxu Wang ◽  
Lishuang Fan ◽  
Yue Qiu ◽  
Dandan Chen ◽  
Xian Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Promising Technology ◽  
Electrochemically Active ◽  
Long Life

Separator modification has been proven to be a promising technology to realize high sulfur-utilization and long-life Li–S batteries.

Rational Design of a High Performance and Robust Solar Evaporator via 3D‐Printing Technology

2021 ◽  
pp. 2102649
Author(s):  
Sourav Chaule ◽  
Jongha Hwang ◽  
Seong‐Ji Ha ◽  
Jihun Kang ◽  
Jong‐Chul Yoon ◽  
...  
Keyword(s):  
3D Printing ◽  
High Performance ◽  
Rational Design ◽  
Printing Technology ◽  
3D Printing Technology

Interpenetrating Gels as Conducting/Adhering Matrices Enabling High-Performance Silicon Anodes

2021 ◽  
Author(s):  
Tingting Xia ◽  
Chengfei Xu ◽  
Pengfei Dai ◽  
Xiaoyun Li ◽  
Riming Lin ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Electrochemical Energy Storage ◽  
Active Materials ◽  
Silicon Anodes ◽  
Weak Binding ◽  
Binding Forces

Three-dimensional (3D) conductive polymers are promising conductive matrices for electrode materials toward electrochemical energy storage. However, their fragile nature and weak binding forces with active materials could not guarantee long-term...

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