【作者】 张卫新； 李昇； 杨则恒； 范小明；

【Author】 ZHANG Weixin;LI Sheng;YANG Zeheng;FAN Xiaoming;School of Chemistry and Chemical Engineering, Hefei University of Technology;

【机构】 合肥工业大学化学与化工学院；

【摘要】 这里我们介绍一种通用的软化学方法-基于乙醇/水混合溶剂共沉淀方法成功制备一系列高能量密度和功率密度的一维微纳结构锂离子电池电极材料,如层状的三元LiNixCo_1-x-yMnyO₂和富锂xLi₂MnO₃·（1-x）LiNi_1/3Mn_1/3Co_1/3O₂（0≤x≤1）、尖晶石型的LiNi_0.5Mn_1.5O₄等。通过调节混合溶剂中乙醇/水的体积比对晶体的成核和生长动力学进行有效调控,进而实现对材料的尺寸、形貌、结构以及性能的优化。该方法在制备高性能一维锂离子电池锰基电极材料方面具有易于控制、重复性好和通用性强等优势。更多还原

【Abstract】 Herein we report a Chimie Douce approach--- by mixed solvent co-precipitation--- to selectively prepare an extensive series of 1D micro/nanostructured electrode materials including layered LiN ixCo_1-x-yMnyO₂, spinel LiN i_0.5Mn_1.5O₄ and layered Li-rich x Li₂ Mn O₃·（1-x）LiN i_1/3Mn_1/3Co_1/3O₂（0 ≤ x ≤ 1） for LIBs with high energy and power densities. Based on the kinetic elaboration of crystallite nucleation and growth through mixed solvent mediation, the new route is easily controllable, repeatable, and generalizable to the fabrication of highly promising manganese-based electrode materials with tunable 1D micro/nanostructures for enhanced performances in lithium-ion batteries.更多还原