Premium
Phosphorus Enhanced Intermolecular Interactions of SnO 2 and Graphene as an Ultrastable Lithium Battery Anode
Author(s) -
Zhang Lei,
Zhao Kangning,
Yu Ruohan,
Yan Mengyu,
Xu Wangwang,
Dong Yifan,
Ren Wenhao,
Xu Xu,
Tang Chunjuan,
Mai Liqiang
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201603973
Subject(s) - graphene , anode , materials science , lithium (medication) , electrolyte , battery (electricity) , tin , nanotechnology , covalent bond , oxide , chemical engineering , nanocrystal , electrode , chemistry , medicine , power (physics) , physics , organic chemistry , quantum mechanics , endocrinology , engineering , metallurgy
SnO 2 suffers from fast capacity fading in lithium‐ion batteries due to large volume expansion as well as unstable solid electrolyte interphase. Herein, the design and synthesis of phosphorus bridging SnO 2 and graphene through covalent bonding are demonstrated to achieve a robust structure. In this unique structure, the phosphorus is able to covalently “bridge” graphene and tin oxide nanocrystal through PC and SnOP bonding, respectively, and act as a buffer layer to keep the structure stable during charging–discharging. As a result, when applied as a lithium battery anode, SnO 2 @P@GO shows very stable performance and retains 95% of 2nd capacity onward after 700 cycles. Such unique structural design opens up new avenues for the rational design of other high‐capacity materials for lithium battery, and as a proof‐of‐concept, creates new opportunities in the synthesis of advanced functional materials for high‐performance energy storage devices.