Nanostructured intercalation compounds as cathode materials for supercapacitors

2014 ◽  
Vol 86 (5) ◽  
pp. 593-609 ◽  
Author(s):  
Yu Liu ◽  
Baihe Zhang ◽  
Faxing Wang ◽  
Zubiao Wen ◽  
Yuping Wu
Keyword(s):  
Electrochemical Performance ◽  
Recent Work ◽  
Cathode Materials ◽  
Sol Gel ◽  
Intercalation Compounds ◽  
Research Progress ◽  
Template Methods

AbstractThis article reviews the research progress in the intercalation compounds for cathode materials for supercapacitors. Typical methods to prepare various intercalation compounds with different nanostructures are summarized. More specifically, the approaches can be subdivided into physical routes such as sonication and microwaves, and chemical routes such as hydrothermal, sol-gel and template methods. The most recent work on nanostructured intercalation compounds including LiCoO2, LiMn2O4, Li[Ni1/3Co1/3Mn1/3]O2, Li1+xV3O8, NaxMnO2, and KxMnO2 is mainly focused including their preparation and electrochemical performance, and new trends in nanomaterials development for supercapacitors are pointed out.

scholarly journals Research Progress of Cathode Materials for Lithium-ion Batteries

2021 ◽  
Vol 233 ◽  
pp. 01020
Author(s):  
Kaijia Lu ◽  
Chuanshan Zhao ◽  
Yifei Jiang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Research Progress ◽  
Energy Storage Materials ◽  
Factors Affecting ◽  
New Energy ◽  
Oxide Spinel

Lithium-ion batteries have attracted widespread attention as new energy storage materials, and electrode materials, especially cathode materials, are the main factors affecting the electrochemical performance of lithium-ion batteries, and they also determine the cost of preparing lithium-ion batteries. In recent years, there have been a lot of researches on the selection and modification of cathode materials based on lithium-ion batteries to continuously optimize the electrochemical performance of lithium-ion batteries. This article introduces the research progress of cathode materials for lithium ion batteries, including three types of cathode materials (layer oxide, spinel oxide, polyanionic compound) and three modification methods (doping modification, surface coating modification, nano modification method), and prospects for the future development of lithium ion battery cathode materials.

scholarly journals Research progress on design strategies, synthesis and performance of LiMn2O4-based cathodes

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 105248-105258 ◽  
Author(s):  
Fangxin Mao ◽  
Wei Guo ◽  
Jianmin Ma
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Performance ◽  
Cathode Materials ◽  
Structural Design ◽  
Recent Progress ◽  
Research Progress ◽  
Design Strategies ◽  
And Performance

In this work, we review recent progress in structural design, designing composites with graphene/carbon nanotubes, crystalline doping, and coatings for improving the electrochemical performance of LiMn2O4-based cathode materials.

Improved electrochemical performance of lanthanum-modified Na3V2(PO4)3/C cathode materials for sodium-ion batteries

2021 ◽  
Author(s):  
Hong-bo Huang ◽  
Cai-ling Liu ◽  
Yue Yang ◽  
Shao-hua Luo
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Sol Gel ◽  
Sodium Ion ◽  
Sodium Ion Batteries

A series of lanthanum-doped Na3V2−xLax(PO4)3/C (0 ≤ x ≤ 0.03) composites have been fabricated via a simple sol–gel approach.

Synthesis and electrochemical performance of Ni and F doped LiMn2O4 cathode materials

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75333-75340 ◽  
Author(s):  
Qingqing Wang ◽  
Xiusheng Zhang ◽  
Yunlong Xu ◽  
Dong Liu ◽  
Hui Dong ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Sol Gel ◽  
Composite Cathode ◽  
Gel Method ◽  
Sol Gel Method ◽  
Excellent Electrochemical Performance ◽  
Limn2o4 Cathode

A series of Ni and F ion doped LiMn2O4 composite cathode materials are synthesized via a sol–gel method. LiNi0.03Mn1.97O3.95F0.05 exhibits an excellent electrochemical performance.

The Effect of Lithium Source on the Electrochemical Performance of LiFePO4/C Cathode Materials Synthesized by Sol-Gel Method

2013 ◽  
Vol 669 ◽  
pp. 311-315 ◽  
Author(s):  
Zhi Qiang Hu ◽  
Dong Xue Yang ◽  
Ke Jian Yin ◽  
Jing Xiao Liu ◽  
Fei Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Sol Gel ◽  
Water Soluble ◽  
Process Conditions ◽  
Gel Method ◽  
Sol Gel Method ◽  
Excellent Electrochemical Performance ◽  
Internal Impedance ◽  
Specific Discharge

LiFePO4/C cathode materials were synthesized by Sol-gel method under the same process conditions using different water-soluble lithium source (LiOH, Li2CO3, LiNO3). The phase of synthesized powders were characterized by XRD; and the electrochemical performance of the material was investigated by measurements of cyclic voltammetry, AC impedance measurements, charge and discharge. The results show that the synthesized LiFePO4/C using LiOH as the lithium source has high electrochemical reversibility and low internal impedance. The specific discharge capacity is 147.5mAh/g under the discharge at 0.2C rate. It also has high stability of cycle capacity, and almost no attenuation after 30 cycles. So it has the excellent electrochemical performance.

Preparation and Electrochemical Performance of Li3V2(PO4)3 Cathode Materials by Microwave-Heated Sol-Gel Method

2010 ◽  
Vol 156-157 ◽  
pp. 1219-1222 ◽  
Author(s):  
Bo Quan Jiang ◽  
Shu Fen Hu ◽  
Min Wei Wang
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Vanadium Phosphate ◽  
Optimal Conditions ◽  
Gel Method ◽  
Sol Gel Method

The lithium vanadium phosphate (Li3V2(PO4)3 solid cathode materials were synthesized by microwave-heated sol-gel method using lithium hydroxide, ammonium metavanadate, phosphate and citric acid as starting materials. The test was conducted with orthogonal experiment method. The optimal conditions for (Li3V2(PO4)3 synthesis were determined to be microwave heating time of 10 min, microwave power of 700 W, Li/V molar ratio of 3.05:2.0 and pH value(gel solution) of 7.0. The synthesized (Li3V2(PO4)3 under the optimal conditions demonstrated perfect crystal growth and good electrochemical performance with initial charge/discharge specific capacity of 172.42 mAh·g-1/154.93 mAh·g-1 and discharge decay rate of 2.25 % after 50 cycles. The lithium ion diffusion coefficient was determined to be 1.434 ×10-8 cm2·s-1 by electrochemical impedance spectroscopy and mathematical models derived from simulative equivalent circuit.

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