High-rate asymmetrical supercapacitors based on cobalt-doped birnessite nanotubes and Mn-FeOOH nanotubes

2020 ◽  
Vol 56 (22) ◽  
pp. 3257-3260 ◽  
Author(s):  
Man Shen ◽  
Shi Jin Zhu ◽  
Ziyang Guo ◽  
Xin Fu ◽  
Wangchen Huo ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
High Rate ◽  
Template Method ◽  
Molar Ratios ◽  
Doping Ratio ◽  
Co Doped ◽  
Simple Hydrothermal Process

Herein, we firstly prepared Co-doped birnessite and Mn-FeOOH nanotubes by a simple hydrothermal process using a sacrificed template method. The doping ratio was adjusted by setting the molar ratios of Co and Mn in the preparing process. Both the Co-doped birnessite and Mn-FeOOH nanotubes exhibit ideal electrochemical properties, especially their excellent rate capability.

Free-standing boron and oxygen co-doped carbon nanofiber films for large volumetric capacitance and high rate capability supercapacitors

Nano Energy ◽  
2015 ◽  
Vol 15 ◽  
pp. 235-243 ◽  
Author(s):  
Zi-You Yu ◽  
Li-Feng Chen ◽  
Lu-Ting Song ◽  
Yan-Wu Zhu ◽  
Heng-Xing Ji ◽  
...  
Keyword(s):  
Carbon Nanofiber ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Free Standing ◽  
Volumetric Capacitance ◽  
Co Doped

scholarly journals A stable TiO2–graphene nanocomposite anode with high rate capability for lithium-ion batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29975-29982 ◽  
Author(s):  
Umer Farooq ◽  
Faheem Ahmed ◽  
Syed Atif Pervez ◽  
Sarish Rehman ◽  
Michael A. Pope ◽  
...  
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Microwave Hydrothermal ◽  
Reduced Graphene ◽  
Graphene Nanocomposite ◽  
Li Ion

A rapid microwave hydrothermal process is adopted for the synthesis of titanium dioxide and reduced graphene oxide nanocomposites as high-performance anode materials for Li-ion batteries.

High rate capability of Co-doped LiFePO4/C

2013 ◽  
Vol 97 ◽  
pp. 143-149 ◽  
Author(s):  
Haiyan Gao ◽  
Lifang Jiao ◽  
Jiaqin Yang ◽  
Zhan Qi ◽  
Yijing Wang ◽  
...  
Keyword(s):  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Co Doped

Synthesis of nitrogen-doped carbon cellular foam with ultra-high rate capability for supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (14) ◽  
pp. 10296-10303 ◽  
Author(s):  
Zhiling Du ◽  
Youshun Peng ◽  
Zhipeng Ma ◽  
Chunying Li ◽  
Jing Yang ◽  
...  
Keyword(s):  
Carbon Source ◽  
Pore Structure ◽  
Three Dimensional ◽  
Rate Capability ◽  
High Rate ◽  
Template Method ◽  
High Rate Capability ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Different Levels

Three-dimensional (3D) interconnected N-doped porous carbons (NPCs) with different levels of pore structure are synthesized by a template method using MnOx as template and N-enriched pyrrole as carbon source.

Ultrahigh rate capability supercapacitors based on tremella-like nitrogen and phosphorus co-doped graphene

2020 ◽  
Vol 4 (9) ◽  
pp. 2704-2715
Author(s):  
Guifang Li ◽  
Yawen Li ◽  
Jingxia Deng ◽  
Huiting Lin ◽  
Xinyi Hou ◽  
...  
Keyword(s):  
Crystal Lattice ◽  
Electrochemical Properties ◽  
Rate Capability ◽  
Nitrogen And Phosphorus ◽  
Doped Graphene ◽  
Co Doped

The incorporation of heteroatomic atoms into the graphene crystal lattice not only effectively introduces the bandgap but also increases the defects and the localized reactivity of the graphene, and thereby the remarkable electrochemical properties of graphene are imparted.

Electrochemical properties of titanium fluoride with high rate capability for lithium-ion batteries

2019 ◽  
Vol 419 ◽  
pp. 1-5
Author(s):  
Ayuko Kitajou ◽  
Katsuya Eguchi ◽  
Yuji Ishado ◽  
Hiroyuki Setoyama ◽  
Toshihiro Okajima ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Titanium Fluoride

Electrochemical Properties of Highly Ordered TiO2 Nanotube Arrays as an Anode Material for Lithium-Ion Batteries

2011 ◽  
Vol 130-134 ◽  
pp. 1281-1285 ◽  
Author(s):  
Li Li Wang ◽  
Shi Chao Zhang ◽  
Xiao Meng Wu
Keyword(s):  
Electrochemical Properties ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Nanotube Arrays ◽  
Rate Performance ◽  
Treatment Rate ◽  
High Rate Capability ◽  
Nanotube Array

Well-aligned TiO2 nanotube arrays were fabricated from anodization by a subsequent heat treatment. Rate performance and electrochemical properties of TiO2 nanotube arrays were studied intensively. The electrode exhibits excellent rate capabilities at various rates with an average coulombic efficiency reaching 95.6%. It is obvious that TiO2 nanotube array possesses high rate capability and excellent cycling stability.

scholarly journals Effect of Structural and Electrochemical Properties of Yttrium-doped LiNi0.90Co0.05Al0.05O2 Electrode by Co-precipitation for Lithium Ion-batteries

2015 ◽  
Vol 18 (1) ◽  
pp. 009-016 ◽  
Author(s):  
Gi-Won Yoo ◽  
Tae-Jun Tae-Jun Park ◽  
Jong-Tae Son
Keyword(s):  
Electrochemical Properties ◽  
Rate Capability ◽  
Lithium Ion ◽  
Solid State Reaction Method ◽  
Charge Transfer Resistance ◽  
Hexagonal Structure ◽  
High Rate ◽  
Transfer Resistance ◽  
Cation Mixing ◽  
Co Precipitation

In this study, the LiNi0.90−xCo0.05Al0.05YxO2 (x = 0, 0.025, 0.075) have been synthesized by a co-precipitation and solid-state reaction method. The effect of the Y3+-doping on the structural and electrochemical properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and by electrochemical and impedance spectroscopy (EIS). From the results of the XRD pattern changes between before and after the doping, less cation mixing and more ordered hexagonal structure were observed for the LiNi0.875Co0.05Al0.05Y0.025O2 cathode and the cell delivered an initial discharge capacity of 195.8 mAhg-1 and was 10.2 mAhg-1 higher than the pristine cell by yttrium doping effect. High rate capability studies were also performed and showed the capacity retention of 95, 81.7 and 63.8 % at 0.2, 1.0 and 5.0 C-rate, respectively during the cycling. The impedance spectra showed that the charge transfer resistance for the pristine cathode grew significantly, while that for the Y3+-doped cathode decreased during cycling. It was concluded that the capacity fading for LiNi0.90Co0.05Al0.05O2 mainly due to the cation mixing, partially contributed by the impedance growth and by doping the pristine material with Y3+, cation mixing can be efficiently suppressed, which results in the improved rate capability.

Graphitic carbon balanced between high plateau capacity and high rate capability for lithium ion capacitors

2017 ◽  
Vol 5 (29) ◽  
pp. 15302-15309 ◽  
Author(s):  
Zhewei Yang ◽  
Huajun Guo ◽  
Xinhai Li ◽  
Zhixing Wang ◽  
Jiexi Wang ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Rate Capability ◽  
Lithium Ion ◽  
Amorphous Structure ◽  
Graphitic Carbon ◽  
High Rate ◽  
High Rate Capability ◽  
Graphitic Structure ◽  
High Plateau

The coexistence of the graphitic structure and amorphous structure benefits the electrochemical properties of GC.

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