Si/SiOx-conductive polymer core-shell nanospheres with an improved conducting path preservation for lithium-ion battery

Eunjun Park, Jeonghun Kim, Dong Jae Chung, Min Sik Park, Hansu Kim, Jung Ho Kim

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Non-stoichiometric SiOx based materials have gained much attention as high capacity lithium storage materials. However, their anode performance of these materials should be further improved for their commercial success. A conductive polymer, poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PE-DOT:PSS), is employed as a flexible electrical interconnector to improve the electrochemical performance of Si/SiOx nano-sphere anode materials for lithium ion batteries (LIBs). The resulting Si/SiOx-PEDOT:PSS core–shell structured material with the small amount (1 wt %) of PEDOT:PSS shows the improved initial reversible capacity of 968.2 mA hg1 with excellent long-term cycle performance over 200 cycles. These promising properties can be attributed to the use of the electroconductive and flexible PEDOT:PSS shell layer, which protects the electrical conduction pathways in the electrode from the large volume changes of silicon during cycling.

Original languageEnglish
Pages (from-to)2754-2758
Number of pages5
JournalChemSusChem
Volume9
Issue number19
DOIs
Publication statusPublished - 2016 Oct 6

Bibliographical note

Funding Information:
This research was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20132020000260).

Publisher Copyright:
© 2016 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim.

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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