Fabrication of Li4Ti5O12@CN Composite With Enhanced Rate Properties

Fabrication of Li4Ti5O12@CN Composite With Enhanced Rate Properties
复制标题

具有增强倍率性能的Li4Ti5O12@CN复合材料的制备

DOI:
10.3389/fchem.2019.00432
复制
发表时间:
2019-06
影响因子:
5.5
通讯作者:
Shibiao Zhou
Shibiao Zhou
中科院分区:
化学3区
文献类型:
--
作者:
Hui Xiao;Xiaobing Huang;Yurong Ren;Xiang Ding;Shibiao Zhou

文献摘要

参考文献

相似文献

首次以叶酸为碳氮前驱体,以乙醇为溶剂,通过球磨纳米TiO2、Li2CO3和叶酸,然后在氩气保护下热处理制备了Li4Ti5O12@CN复合材料。采用XRD、SEM、TEM、XPS、充放电测试和电化学阻抗谱等方法研究了N掺杂对碳涂层结构、形貌和电化学性能的影响。结果表明,与纯Li4Ti5O12相比,N掺杂碳包覆Li4Ti5O12复合材料具有上级的高倍率性能。它在0.5和10 C下分别具有174和165 mAh g−1的高放电容量。此外,在10 ℃下200次循环后获得96.2%的初始比容量。其优异的性能可能归因于N掺杂碳层提供了有效的电子传导网络和纳米尺寸减少了锂离子的扩散路径。
Folic acid is first time applied as a carbon-nitrogen precursor to fabricate Li4Ti5O12@CN composites via ball milling Nano-TiO2, Li2CO3 and folic acid with ethanol as solvent, and then followed by heating treatment in argon. XRD, SEM, TEM, XPS, charge-discharge test and EIS are used to evaluate the influence of N-doped carbon coating on its structure, morphologies and electrochemical property. It is demonstrated that the N-doped carbon coated Li4Ti5O12 composite exhibits superior high-rate performance compared with pure Li4Ti5O12. It possesses a high discharge capacity of 174, 165 mAh g−1 at 0.5 and 10 C, respectively. Additionally, an initial specific capacity of 96.2% is obtained after 200 cycles at 10 C. The remarkable performance might be put down to the N-doped carbon layer providing efficiently electron conductive network and nanosized decreasing lithium ion diffusion path.
DOI: 10.1016/j.ssi.2017.03.018
发表时间: 2017-06
期刊: Solid State Ionics
影响因子: 3.2
作者:
G. Xu;X. Quan;H. Gao;Jun Li;Yongwei Cai;Xingxing Cheng;Liping Guo
通讯作者: G. Xu;X. Quan;H. Gao;Jun Li;Yongwei Cai;Xingxing Cheng;Liping Guo
DOI: 10.1016/j.jpowsour.2017.01.073
发表时间: 2017-03
影响因子: 9.2
作者:
Qian Wang-;Jian Zhang;Wei Liu;Xiaohua Xie;B. Xia
通讯作者: Qian Wang-;Jian Zhang;Wei Liu;Xiaohua Xie;B. Xia
富锂正极材料Li-1.35[Ni0.35Mn0.65]O-2中残留锂化合物的形成及其影响
DOI: 10.1021/acsami.9b01806
发表时间: 2019
影响因子: 9.5
作者:
Zhou Chun-xian;Wang Peng-bo;Zhang Bao;Tang Lin-bo;Tong Hui;He Zhen-jiang;Zheng Jun-chao
通讯作者: Zheng Jun-chao
DOI: 10.1016/j.ceramint.2017.05.341
发表时间: 2017-10
影响因子: 5.2
作者:
Chunhai Jiang;Shangbiao Liu;Qinghuang Lian;J. Zhao;W. Ding;Zhiyang Yu;Renzhong Huang;Zhimin Zou-Zhimi
通讯作者: Chunhai Jiang;Shangbiao Liu;Qinghuang Lian;J. Zhao;W. Ding;Zhiyang Yu;Renzhong Huang;Zhimin Zou-Zhimi
DOI: 10.1016/j.powtec.2011.09.011
发表时间: 2012
期刊: Powder Technology
影响因子: 5.2
作者:
Li Wang;Zonglin Zhang;Guangchuan Liang;Xiuqin Ou;Ying Xu
通讯作者: Li Wang;Zonglin Zhang;Guangchuan Liang;Xiuqin Ou;Ying Xu