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Date of Publication:2022-10-09

Journal:电化学

Affiliation of Author(s):化工学院

Volume:19

Issue:2

Page Number:169-173

ISSN No.:1006-3471

Abstract:Carbon coated tin powder was prepared by decomposing glucose applying a
   hydrothermal method, and was further used as the active material for
   negative electrode of lithium secondary battery. Charge-discharge tests
   show that the carbon coated tin electrode with the addition of 5% (by
   mass) acetylene black as a conductive agent could obtain an initial
   discharge capacity of 967 mAh·g~(-1) and a discharge capacity of 362
   mAh·g~(-1) after 50 cycles, which is much higher than that of tin
   electrode (166 mAh·g~(-1) after 50 cycles). The coated carbon hinders
   the agglomeration of tin powder and reduces the irreversible capacity
   loss of tin. The addition of acetylene black could reduce the impedance
   between the electrode and the electrolyte, therefore, improve the
   transfer property of lithium ions and the electrons within the
   electrode, which contribute to the higher initial discharge capacity.

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