Synthesis of CuS@CoS2 Double-Shelled Nanoboxes with Enhanced Sodium Storage Properties
Synthesis of CuS@CoS2 Double-Shelled Nanoboxes with Enhanced Sodium Storage Properties
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DOI：
10.1002/anie.201902583
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发表时间：
2019-06-03
影响因子：
16.6
通讯作者：
Lou, Xiong Wen (David)
中科院分区：
文献类型：
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作者：
Fang, Yongjin;Guan, Bu Yuan;Lou, Xiong Wen (David)
金属硫化物由于其高容量和良好的氧化还原可逆性而受到人们的广泛关注。然而，其倍率性能差和容量衰减快的缺点极大地阻碍了其在钠离子电池中的实际应用。在此，一个优雅的多步模板策略已被开发，合理地合成分层双壳纳米盒与CoS2纳米片构造的外壳上的CuS内壳支持。它们的结构和组成使这些分层CuS@CoS2纳米盒能够显示出增强的电化学性能，具有高容量，出色的倍率性能和长循环寿命。
Metal sulfides have received considerable attention for efficient sodium storage owing to their high capacity and decent redox reversibility. However, the poor rate capability and fast capacity decay greatly hinder their practical application in sodium-ion batteries. Herein, an elegant multi-step templating strategy has been developed to rationally synthesize hierarchical double-shelled nanoboxes with the CoS2 nanosheet-constructed outer shell supported on the CuS inner shell. Their structure and composition enable these hierarchical CuS@CoS2 nanoboxes to show boosted electrochemical properties with high capacity, outstanding rate capability, and long cycle life.