易于大规模生产的纳米多孔 SnO 纳米片作为高性能锂离子电池的阳极材料。
Facile mass production of nanoporous SnO nanosheets as anode materials for high performance lithium-ion batteries.
机构信息
State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
出版信息
J Colloid Interface Sci. 2017 Oct 1;503:205-213. doi: 10.1016/j.jcis.2017.05.017. Epub 2017 May 9.
Facile one-step ultrasonic-assisted chemical precipitation strategy has been developed for the mass production of SnO nanomaterials with different morphologies. As anode material for lithium-ion batteries, the nanoporous SnO nanosheets exhibited an extremely high initial specific capacity of 2231mAh/g in comparison with 1242mAh/g of the SnO microcrystals and 1244mAh/g of the nanoporous SnO nanoflowers. Meanwhile the nanoporous SnO nanosheet electrode displayed a specific capacity of 688mAh/g after 60 cycles at 0.2 A/g current density and an extraordinary capacity retention of 224mAh/g at a current density of 8A/g (approximately 10 C) owing to a huge increase of Li diffusion coefficient.
已经开发出一种简便的一步超声辅助化学沉淀策略，用于大规模生产具有不同形态的 SnO 纳米材料。作为锂离子电池的阳极材料，与 SnO 微晶体的 1242mAh/g 和纳米多孔 SnO 纳米花的 1244mAh/g 相比，纳米多孔 SnO 纳米片显示出极高的初始比容量 2231mAh/g。同时，纳米多孔 SnO 纳米片电极在 0.2 A/g 电流密度下经过 60 次循环后具有 688mAh/g 的比容量，并且在 8A/g（约 10 C）的电流密度下具有 224mAh/g 的非凡容量保持率，这归因于 Li 扩散系数的大幅增加。
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