Preparation of sandwich-like phosphorus/reduced graphene oxide composites as anode materials for lithium-ion batteries
Preparation of sandwich-like phosphorus/reduced graphene oxide composites as anode materials for lithium-ion batteries
复制标题
锂离子电池负极材料三明治状磷/还原氧化石墨烯复合材料的制备
DOI：
10.1016/j.electacta.2016.06.052
复制
发表时间：
2016-09-01
影响因子：
6.6
通讯作者：
Hu, Chuansheng
中科院分区：
文献类型：
--
作者：
Wang, Liyuan;Guo, Hailong;Hu, Chuansheng
近年来，磷/碳（P/C）复合材料作为锂、钠离子电池的负极材料，因其高容量、快倍率和长循环寿命而受到广泛关注。然而，目前P/C复合材料的制备方法主要局限于高能机械球磨法和蒸发冷凝法。在这项工作中，我们报道了一种高压辅助喷涂方法来合成一种独特的纳米级磷颗粒和堆叠的还原氧化石墨烯纳米片（P@GS复合材料）的类似纳米颗粒的混合物。P@GS复合材料表现出上级的循环性能，首次放电容量为1876 mAhg（-1），50次循环后的可逆容量接近990 mAhg（-1）。P@GS复合材料优异的电化学性能是由于其三明治结构以及磷（高储锂容量）和还原氧化石墨烯纳米片（稳定的循环性能）的协同作用。高压辅助喷雾法具有连续性好、成本低、设备简单等优点，适合在生产中应用。P@GS复合材料制备方法的优越性和高可逆储锂性能为锂离子电池材料提供了一种很有前途的选择。(C)2016爱思唯尔有限公司版权所有
Recently, phosphorus/carbon (P/C) composites as anode materials for lithium or sodium ion batteries have attracted intense attention owing to their high capacity, fast rate capability and long cycle life. However, the preparation methods of P/C composites were usually confined to high-energy mechanical ball milling and vaporization-condensation strategies. In this work, we reported a high-pressure-assisted spraying method to synthesize an unique sandwich-like hybrid of nanosized phosphorus particles and stacked reduced graphene oxide nanosheets (P@GS composites). The P@GS composites presented a superior cycling performance with an initial discharge capacity of 1876 mAhg(-1) and a reversible capacity of similar to 990 mAhg(-1) after 50 cycles. The remarkable electrochemical performance of P@GS composites could be ascribed to the sandwiched structure and the cooperative effect of phosphorus(high lithium-storage capacity) and reduced graphene oxide nanosheets (stable cyclability). Furthermore, this high-pressure-assisted spraying method was well suitable for the application in production due to its continuity, low cost and simple apparatus. The superiority of the preparation method and the highly reversible lithium storage of P@GS composites offered a promising alternative for lithium-ion battery materials. (C) 2016 Elsevier Ltd. All rights reserved.