Interwoven heterostructural Co3O4–carbon@FeOOH hollow polyhedrons with improved electrochemical performance

2016 ◽  
Vol 4 (48) ◽  
pp. 19011-19018 ◽  
Author(s):  
Wangwang Xu ◽  
Zhiqiang Xie ◽  
Zi Wang ◽  
Grant Dietrich ◽  
Ying Wang

This work displays well-defined Co3O4–carbon hollow polyhedrons that can serve as a growth platform for amorphous FeOOH nanowires, forming interwoven hollow polyhedrons that exhibit improved reversibility and high capacity as anode material for lithium ion batteries.

2020 ◽  
Vol 4 (11) ◽  
pp. 5757-5764
Author(s):  
Wen Zheng ◽  
Wanying Bi ◽  
Xuenong Gao ◽  
Zhengguo Zhang ◽  
Wenhui Yuan ◽  
...  

The Ni–Co-BTC anode shows excellent electrochemical performance, which could be ascribed to the intercalation/deintercalation mechanism and the synergistic effect of two cations.


2017 ◽  
Vol 53 (87) ◽  
pp. 11897-11900 ◽  
Author(s):  
Myungbeom Sohn ◽  
Hyeong-Il Park ◽  
Hansu Kim

The foamed Si particles prepared by a milling-assisted alkaline etching process showed excellent electrochemical performance as an anode for lithium-ion batteries.


2014 ◽  
Vol 809-810 ◽  
pp. 781-786
Author(s):  
Min Liu ◽  
Na Zhang ◽  
Feng Hui Zhao ◽  
Xiao Qin Zhao ◽  
Ke Chen ◽  
...  

As lithium-ion battery anode materials, silicon has the highest specific capacity. In order to restrain pure silicon’s serious volume change and enhance its electrochemical performance, Si/SiO2 composites were prepared by using a convenient high energy ball-milling technique. The characteristics of the composites as anode material for rechargeable lithium-ion batteries were investigated by X-ray diffraction and scanning electron microscopy methods. The electrochemical performance of the anode material was studied, and it was found the composite anode had a high capacity of 1333 mAhg-1 in the first cycle and 400 mAhg-1 could still be obtained after 46 cycles. Such prepared materials displayed improved cycle life.


Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.


2013 ◽  
Vol 28 (5) ◽  
pp. 515-520 ◽  
Author(s):  
Zhen-Jun YU ◽  
Yan-Li WANG ◽  
Hong-Gui DENG ◽  
Liang ZHAN ◽  
Guang-Zhi YANG ◽  
...  

2019 ◽  
Vol 7 (29) ◽  
pp. 17357-17365 ◽  
Author(s):  
Bozhao Wu ◽  
Xiangzheng Jia ◽  
Yanlei Wang ◽  
Jinxi Hu ◽  
Enlai Gao ◽  
...  

A new graphyne with high stability, excellent flexibility and carrier mobility is theoretically predicted as a promising anode material for lithium-ion batteries with high capacity.


2021 ◽  
Vol 10 (1) ◽  
pp. 210-220
Author(s):  
Fangfang Wang ◽  
Ruoyu Hong ◽  
Xuesong Lu ◽  
Huiyong Liu ◽  
Yuan Zhu ◽  
...  

Abstract The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g−1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.


Nanoscale ◽  
2021 ◽  
Author(s):  
Kun Wang ◽  
Yongyuan Hu ◽  
Jian Pei ◽  
Fengyang Jing ◽  
Zhongzheng Qin ◽  
...  

High capacity Co2VO4 becomes a potential anode material for lithium ion batteries (LIBs) benefiting from its lower output voltage during cycling than other cobalt vanadates. However, the application of this...


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