标题:Sacrificial templating synthesis of rod-like LiNixMn2-xO4 spinels and their improved cycling performance
作者:Zhao, C.;Kang, W.;Wang, X.;Zhao, S.;Shen, Q.
作者机构:[Zhao, C] Shandong University, Key Laboratory for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, 更多
通讯作者:Zhao, C.
通讯作者地址:[Zhao, CH]Shandong Univ, Key Lab Colloid & Interface Chem, Educ Minist, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
来源:Micro & nano letters
出版年:2012
卷:7
期:6
页码:558-560
DOI:10.1049/mnl.2012.0020
摘要:Nanofabrication of crystalline materials has been well recognised as one of the most efficient pathways to improve the electrochemical performance of an electrode on the principle of lithium-ion insertion/extraction depth. Herein, it is reported that freshly prepared B-MnO2 nanorods have been successfully used as sacrificial templates to synthesise the rod-like spinels of pristine LiMn2O4 with high purity and good crystallinity. Under the optimum sintering temperature of 750°C for 10 h, the presence of doping reactant Ni(CH3COO)2.4H2O can greatly weaken the templating effectiveness of B-MnO2 nanorods, effectively resulting in LiNixMn2-xO4 (x = 0.025, 0.05 and 0.1) samples with a relatively short aspect ratio. Galvanostatic charge-discharge tests showed that the undoped rods could acquire an initial discharge capacity of 125.9 mAh/g at 1 C and the corresponding capacity retention of 75.3% after 100 cycles. Interestingly, with the increase of element-doped amount, the resulting LiNixMn2-xO4 displayed a gradually improved cyclability at the charge-discharge rate of 1 C at room temperature.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:6
Scopus被引频次:6
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863535058&doi=10.1049%2fmnl.2012.0020&partnerID=40&md5=245290a9e4a9415c51f9260366cd59bb
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