标题:Self-supporting, eutectic-like, nanoporous biphase bismuth-tin film for high-performance magnesium storage
作者:Song, Meijia; Niu, Jiazheng; Yin, Kuibo; Gao, Hui; Zhang, Chi; Ma, Wensheng; Luo, Fakui; Peng, Zhangquan; Zhang, Zhonghua
作者机构:[Song, Meijia; Niu, Jiazheng; Gao, Hui; Ma, Wensheng; Luo, Fakui; Zhang, Zhonghua] Shandong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Liquid Soli 更多
通讯作者:Zhang, ZH;Zhang, Zhonghua
通讯作者地址:[Zhang, ZH]Shandong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jingshi Rd 17923, Jinan 250061, Shandong, Pe 更多
来源:NANO RESEARCH
出版年:2019
卷:12
期:4
页码:801-808
DOI:10.1007/s12274-019-2291-1
关键词:magnesium ion batteries; alloying-type anode; biphase bismuth-tin film;; hierarchically porous structure; magnetron cosputtering
摘要:Magnesium ion batteries are emerging as promising alternatives to lithium ion batteries because of their advantages including high energy density, dendrite-free features and low cost. Nevertheless, one of the major challenges for magnesium ion batteries is the kinetically sluggish magnesium insertion/extraction and diffusion in electrode materials. Aiming at this issue, biphase eutectic-like bismuth-tin film is designed herein to construct a self-supporting anode with interdigitated phase distribution and hierarchically porous structure, and further fabricated by a facile one-step magnetron cosputtering route. As benchmarked with single-phase bismuth or tin film, the biphase bismuth-tin film delivers high specific capacity (538 mAh/g at 50 mA/g), excellent rate performance (417 mAh/g at 1,000 mA/g) and good cycling stability (233 mAh/g at the 200th cycle). The superior magnesium storage performance of the sputtered bismuth-tin film could be attributed to the synergetic effect of the interdigitated bismuth/tin phase distribution, hierarchically porous structure and biphase buffering matrices, which could increase ionic transport channels, shorten diffusion lengths and reduce total volume changes.
收录类别:EI;SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060605096&doi=10.1007%2fs12274-019-2291-1&partnerID=40&md5=901bb8bfc0416f4f863171cdef1b7d5a
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