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Lithium Storage in Heat‐Treated SnF 2 /Polyacrylonitrile Anode
Author(s) -
Shen Lian,
Shen Lanyao,
Wang Zhaoxiang,
Chen Liquan
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201500620
Subject(s) - polyacrylonitrile , lithium (medication) , anode , tin , electrode , lithium fluoride , materials science , battery (electricity) , lithium ion battery , thermal energy storage , chemistry , chemical engineering , inorganic chemistry , composite material , polymer , metallurgy , thermodynamics , medicine , power (physics) , physics , endocrinology , engineering
Tin(II) fluoride (SnF 2 ) has a high Li‐storage capacity because it stores lithium first by a conversion reaction and then by a Li/Sn alloying/dealloying reaction. A polyacrylonitrile (PAN)‐bound SnF 2 electrode was heat‐treated to enhance the integral electrical contact and the mechanical strength through its cross‐linked framework. The heat‐treated SnF 2 electrode showed reversible capacities of 1047 mAh g −1 in the first cycle and 902 mAh g −1 after 100 cycles. Part of the excess capacity is due to lithium storage at the Sn/LiF interface, and the other part is assumed to correspond to the presence of reduced SnF 2 with protons released during the thermal cross‐linking of PAN.
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