Three-dimensional hollow microtubular carbonized kapok fiber/cobalt-nickel binary oxide composites for high-performance electrode materials of supercapacitors

2017 ◽  
Vol 224 ◽  
pp. 113-124 ◽  
Author(s):  
Weibing Xu ◽  
Bin Mu ◽  
Aiqin Wang
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Binary Oxide ◽  
Kapok Fiber ◽  
Cobalt Nickel ◽  
Oxide Composites

scholarly journals Cobalt–Nickel Oxides with Three-Dimensional Hexagon Films for High Performance Supercapacitors

NANO ◽  
2018 ◽  
Vol 13 (03) ◽  
pp. 1850032 ◽  
Author(s):  
Yinan Lv ◽  
Guixia Dong ◽  
Lei Li ◽  
Jingrui Kang ◽  
Weidan Han
Keyword(s):  
Nickel Oxide ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Nickel Ions ◽  
Cobalt Nickel ◽  
Nickel Oxide Electrode ◽  
Cobalt Nickel Oxide

Cobalt–nickel oxide electrode materials with three-dimensional hexagon films or flower-shaped structures have been synthesized by a chemical precipitation method at different thermal decomposition temperatures. Nickel ions enter into the lattice of Co3O4 by forming solid solution and promote primary nanoparticles partly self-assemble into three-dimensional hexagon films which interlace with each other to form a flower-like structure. Consequently, cobalt–nickel oxide with a Ni/Co mole ratio of 1:6 at 220[Formula: see text]C displays a highest capacitance of 796.16[Formula: see text]F/g at 200[Formula: see text]mA/g and cobalt–nickel oxide with a Ni/Co mole ratio of 1:3 at 200[Formula: see text]C exhibits a highest capacitance of 290[Formula: see text]F/g at 10[Formula: see text]A/g, which significantly improve the electrochemical properties of Co3O4.

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...

Fabrication of nitrogen-doped hierarchical porous carbons from Sargassum as advanced electrode materials for supercapacitors

2021 ◽  
Author(s):  
Feiqiang Guo ◽  
Yinbo Zhan ◽  
Xiaopeng Jia ◽  
Huiming Zhou ◽  
Shuang Liang ◽  
...  
Keyword(s):  
High Performance ◽  
Nitrogen Doping ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Koh Activation ◽  
Porous Carbons ◽  
Nitrogen Doped ◽  
Novel Approach ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Using Sargassum as the precursor, a novel approach was developed to synthesize three-dimensional porous carbons as high-performance electrode materials for supercapacitors via KOH activation and subsequent nitrogen-doping employing melamine as...

Solvothermal synthesis of cobalt nickel layered double hydroxides with a three-dimensional nano-petal structure for high-performance supercapacitors

2020 ◽  
Vol 4 (1) ◽  
pp. 337-346 ◽  
Author(s):  
Hailiang Chu ◽  
Ying Zhu ◽  
Tingting Fang ◽  
Junqiang Hua ◽  
Shujun Qiu ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Solvothermal Synthesis ◽  
High Performance ◽  
Three Dimensional ◽  
Rate Performance ◽  
Supercapacitor Electrode ◽  
Long Term Stability ◽  
Cobalt Nickel ◽  
Double Hydroxides

CoNi LDH-6 with a nano-petal structure was prepared, which exhibited excellent rate performance and long-term stability as a supercapacitor electrode.

scholarly journals Recent Progress of Electrochemical Energy Devices: Metal Oxide–Carbon Nanocomposites as Materials for Next-Generation Chemical Storage for Renewable Energy

2019 ◽  
Vol 11 (13) ◽  
pp. 3694 ◽  
Author(s):  
Dohyeong Seok ◽  
Yohan Jeong ◽  
Kyoungho Han ◽  
Do Young Yoon ◽  
Hiesang Sohn
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Structural Instability ◽  
Energy Devices ◽  
High Theoretical Capacity ◽  
2D And 3D ◽  
Oxide Composites ◽  
Electrochemical Energy

With the importance of sustainable energy, resources, and environmental issues, interest in metal oxides increased significantly during the past several years owing to their high theoretical capacity and promising use as electrode materials for electrochemical energy devices. However, the low electrical conductivity of metal oxides and their structural instability during cycling can degrade the battery performance. To solve this problem, studies on carbon/metal-oxide composites were carried out. In this review, we comprehensively discuss the characteristics (chemical, physical, electrical, and structural properties) of such composites by categorizing the structure of carbon in different dimensions and discuss their application toward electrochemical energy devices. In particular, one-, two-, and three-dimensional (1D, 2D, and 3D) carbon bring about numerous advantages to a carbon/metal-oxide composite owing to the unique characteristics of each dimension.

A free-standing manganese cobalt sulfide@cobalt nickel layered double hydroxide core–shell heterostructure for an asymmetric supercapacitor

2020 ◽  
Vol 49 (1) ◽  
pp. 196-202 ◽  
Author(s):  
Haoyan Liang ◽  
Tiesong Lin ◽  
Shengyao Wang ◽  
Henan Jia ◽  
Chun Li ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
High Performance ◽  
Rational Design ◽  
Electrode Materials ◽  
Cobalt Sulfide ◽  
Core Shell ◽  
Asymmetric Supercapacitor ◽  
Free Standing ◽  
Cobalt Nickel ◽  
Double Hydroxide

Rational design of self-supported electrode materials is important to develop high-performance supercapacitors.

scholarly journals 3D Porous Ti3C2 MXene/NiCo-MOF Composites for Enhanced Lithium Storage

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 695 ◽  
Author(s):  
Yijun Liu ◽  
Ying He ◽  
Elif Vargun ◽  
Tomas Plachy ◽  
Petr Saha ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
High Current Density ◽  
Composite Films ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Energy Storage Devices ◽  
Lithium Storage ◽  
Hierarchical Porous

To improve Li storage capacity and the structural stability of Ti3C2 MXene-based electrode materials for lithium-ion batteries (LIBs), a facile strategy is developed to construct three-dimensional (3D) hierarchical porous Ti3C2/bimetal-organic framework (NiCo-MOF) nanoarchitectures as anodes for high-performance LIBs. 2D Ti3C2 nanosheets are coupled with NiCo-MOF nanoflakes induced by hydrogen bonds to form 3D Ti3C2/NiCo-MOF composite films through vacuum-assisted filtration technology. The morphology and electrochemical properties of Ti3C2/NiCo-MOF are influenced by the mass ratio of MOF to Ti3C2. Owing to the interconnected porous structures with a high specific surface area, rapid charge transfer process, and Li+ diffusion rate, the Ti3C2/NiCo-MOF-0.4 electrode delivers a high reversible capacity of 402 mAh g−1 at 0.1 A g−1 after 300 cycles; excellent rate performance (256 mAh g−1 at 1 A g−1); and long-term stability with a capacity retention of 85.7% even after 400 cycles at a high current density, much higher than pristine Ti3C2 MXene. The results highlight that Ti3C2/NiCo-MOF have great potential in the development of high-performance energy storage devices.

Morphology engineering of high performance binary oxide electrodes

2015 ◽  
Vol 17 (2) ◽  
pp. 732-750 ◽  
Author(s):  
Kunfeng Chen ◽  
Congting Sun ◽  
Dongfeng Xue
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Binary Oxide ◽  
Electrochemical Energy Storage ◽  
Oxide Electrode ◽  
Oxide Electrodes ◽  
Morphology Engineering ◽  
Electrochemical Energy

A review of morphology engineering of high performance binary oxide electrode materials for electrochemical energy storage is presented.

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