Use of a novel layered titanoniobate as an anode material for long cycle life sodium ion batteries
Use of a novel layered titanoniobate as an anode material for long cycle life sodium ion batteries
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使用新型层状铌酸钛作为长循环寿命钠离子电池负极材料
DOI：
10.1039/c6ra02530g
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发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
Wei Bingqing
中科院分区：
文献类型：
--
作者：
Xie Keyu;Wei Wenfei;Yu Haoran;Deng Manjiao;Ke Shanming;Zeng Xierong;Li Zhihua;Shen Chao;Wang Jian-gan;Wei Bingqing
钠离子电池作为锂离子电池的替代品在大规模能源应用中受到越来越多的关注。然而，事实证明很难找到兼具高容量和优异循环稳定性的合适钠主体材料。我们通过固态煅烧和离子交换制备了层状铌酸钛（HTi2NbO7），用于钠离子电池。层状 HTi2NbO7 在 100 mA g−1 时的比容量约为 90 mA h g−1。该容量在 2000 次循环后高度可逆。这些结果表明，这种层状铌酸钛材料是一种有前途的钠离子电池负极材料，具有长循环寿命。
Sodium ion batteries have been attracting increasing attention as a replacement for lithium ion batteries in large-scale energy applications. However, it is proving difficult to find suitable sodium host materials with both a high capacity and excellent cycle stability. We prepared a layered titanoniobate (HTi2NbO7) via solid-state calcination followed by ion exchange for use in sodium ion batteries. The lamellar HTi2NbO7 had a specific capacity of about 90 mA h g−1 at 100 mA g−1. The capacity was highly reversible over 2000 cycles. These results show that this lamellar titanoniobate material is a promising anode material for sodium ion batteries with a long cycle life.