Rapid thermal deposited GeSe nanowires as a promising anode material for lithium-ion and sodium-ion batteries
Rapid thermal deposited GeSe nanowires as a promising anode material for lithium-ion and sodium-ion batteries
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快速热沉积GeSe纳米线作为锂离子和钠离子电池有前景的阳极材料
DOI：
10.1016/j.jcis.2020.03.026
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发表时间：
2020
影响因子：
9.9
通讯作者：
Jiang Feng
中科院分区：
文献类型：
--
作者：
Wang Kang;Liu Miao;Huang Dingwang;Li Lintao;Feng Kuang;Zhao Lingzhi;Li Jingbo;Jiang Feng
重要的是要开发一种简单，方便和环境友好的策略，以改善各种储能系统中材料的性能。本文中，基于具有GeSe颗粒的自组装纳米线结构的无粘合剂阳极通过快速箱式热沉积形成，并且首次报道为用于锂/钠离子电池的先进阳极。对于LIB，它具有出色的储能性能，具有高比容量（在200 mA g− 1下，300次循环后约为815.49 mAh g− 1），上级倍率性能（在4000 mA g−1下，10次循环后约为578.49 mAh g− 1）和出色的循环稳定性（在300次循环后约为87.78%的容量保持率）。它甚至在2000次循环后显示出在500 mA g − 1下359.5 mAh g− 1的高可逆容量。对于SIB，它表现出良好的循环稳定性（在200 mA g − 1下，50次循环后约为433.4 mAh g− 1，容量保持率约为85.3%）和倍率性能（在1000 mA g−1下，10次循环约为299.7 mAh g− 1）。在该电极中，GeSe纳米线（GeSe-NWs）由纳米颗粒组成，纳米颗粒之间具有空隙，这些空隙缩短了锂/钠离子和电子的扩散长度，并缓冲了锂/钠离子插入/提取过程中的体积变化。此外，镍泡沫框架的引入增强了电极的导电性，并在循环时保持结构完整性。这一方法为研究和合成各种新型和适用于储能领域的材料提供了新的视角。
It is important to develop a simple, facile and environmentally friendly strategy for improving the properties of materials in various energy storage systems. Herein, a binder-free anode based on self-assembled nanowires structures with GeSe particles is formed through a rapid box thermal deposition and first reported as an advanced anode for lithium/sodium-ion batteries. For LIBs, it delivers an excellent energy storage performance with high specific capacity (~815.49 mAh g−1at 200 mA g−1after 300 cycles), superior rate capability (~578.49 mAh g−1for 10 cycles at 4000 mA g−1) and outstanding cycling stability (~87.78% of capacity retention after 300 cycles). It even shows a high reversible capacity of 359.5 mAh g−1at 500 mA g−1after 2000 cycles. For SIBs, it shows good cycling stability (~433.4 mAh g−1at 200 mA g−1after 50 cycles with ~85.3% capacity retention) and rate performance (~299.7 mAh g−1for 10 cycles at 1000 mA g−1). In this electrode, GeSe nanowires (GeSe-NWs) consist of nanoparticles with voids between them that shorten the diffusion length for lithium/sodium ions and electrons and buffer the volumetric variation during the lithium/sodium ion insertion/extraction process. In addition, the introduction of Ni foam frameworks enhances the electrical conductivity of the electrode and retains the structural integrity upon cycling. This approach provides a new perspective for investigating and synthesizing various novel and suitable materials for energy storage fields.