Nanoconfined SnS in 3D interconnected macroporous carbon as durable anodes for lithium/sodium ion batteries
Nanoconfined SnS in 3D interconnected macroporous carbon as durable anodes for lithium/sodium ion batteries
复制标题
3D互连大孔碳中的纳米限制SnS作为锂/钠离子电池的耐用阳极
DOI：
10.1016/j.carbon.2018.04.003
复制
发表时间：
2018
期刊：
影响因子：
10.9
通讯作者：
Dou Shixue
中科院分区：
文献类型：
--
作者：
Xue Pan;Wang Nana;Wang Yunxiao;Zhang Yaohui;Liu Yuanlin;Tang Bin;Bai Zhongchao;Dou Shixue
以硅蛋白石为模板，通过碳化和硫化反应制备了三维互连大孔碳中的纳米级SnS（3D SnS/C）。研究了3D SnS/C作为锂/钠离子电池负极材料的电化学性能。在LIB中循环1000次后，1 A g− 1时的高比容量为869 mA h g− 1;在SIB中循环100次后，100 mA g− 1时的高比容量为400 mA h g − 1。速率性能也非常出色（在3 A g− 1 in LIB时为550 mA h g− 1，在5 A g− 1 in SIB时为220.9 mA h g− 1）。3D SnS/C材料优异的电化学性能是由于其三维多孔碳互连结构和纳米尺度的SnS纳米颗粒在碳基体中的广泛分布，不仅提高了材料的导电性，而且保持了结构的完整性，提高了材料的循环稳定性。此外，这种简单而新奇的策略可以潜在地用于制备用于储能的其他3D金属硫化物互连大孔碳复合材料。
Nanoconfined SnS in 3D interconnected macroporous carbon (3D SnS/C) has been produced using silica opals as template following a carbonization and sulfuration route. The electrochemical properties of the 3D SnS/C were examined comprehensively as anode materials for lithium/sodium ion batteries (LIBs/SIBs). It delivers a high specific capacity of 869 mA h g−1at 1 A g−1after 1000 cycles in LIBs and 400 mA h g−1at 100 mA g−1after 100 cycles in SIBs. The rate performance is also excellent (550 mA h g−1at 3 A g−1in LIBs and 220.9 mA h g−1at 5 A g−1in SIBs). The outstanding electrochemical performance of the 3D SnS/C is ascribed to its 3D porous carbon interconnected structure and nanoconfined SnS nanoparticles distributing broadly in carbon matrix, which not only improve the conductivity, but also keep the structure integrity, and as a result of enhancing the cycling stability of the material. In addition, this facile and novelty strategy can be potentially utilized for preparing other 3D metal sulfides interconnected macroporous carbon composite for energy storage.