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
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.