涂覆有聚吡咯的氧化锡纳米片阵列作为钠离子电池的柔性阳极用于碳布上
SnO Nanoflake Arrays Coated with Polypyrrole on a Carbon Cloth as Flexible Anodes for Sodium-Ion Batteries.
作者信息
Wang Minya, Wang Xiuli, Yao Zhujun, Tang Wangjia, Xia Xinhui, Gu Changdong, Tu Jiangping
机构信息
State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering , Zhejiang University , Hangzhou 310027 , China.
出版信息
ACS Appl Mater Interfaces. 2019 Jul 10;11(27):24198-24204. doi: 10.1021/acsami.9b08378. Epub 2019 Jun 27.
SnO has been extensively studied as an anode material for sodium-ion batteries, which, however, has long been subjected to poor conductivity and large volume expansion accompanied with an unsatisfactory electrochemical performance. Here, novel interlaced SnO nanoflakes are synthesized directly on a carbon cloth collector via hydrothermal and annealing treatment and then coated with polypyrrole (PPy) via electrodeposition. The as-prepared flexible SnO@PPy on the carbon cloth exhibits a high initial capacity of 1172.1 mAh g and an outstanding cycling stability with 85% capacity retention after 300 cycles at 0.1 A g, which can be contributed to the interlaced SnO nanoflakes as well as the coating of PPy. This result shows promising potential for construction of an electrode in high-performance energy storage fields.
氧化亚锡（SnO）作为钠离子电池的负极材料已被广泛研究，然而，长期以来它一直存在导电性差和体积膨胀大的问题，伴随着不尽人意的电化学性能。在此，通过水热和退火处理直接在碳布集流体上合成了新型交错排列的氧化亚锡纳米片，然后通过电沉积法包覆聚吡咯（PPy）。制备得到的碳布上的柔性SnO@PPy展现出1172.1 mAh g的高初始容量以及出色的循环稳定性，在0.1 A g下循环300次后容量保持率为85%，这可归因于交错排列的氧化亚锡纳米片以及聚吡咯涂层。该结果显示了在高性能储能领域构建电极方面具有广阔的应用潜力。
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