Si/SiOx-Conductive Polymer Core-Shell Nanospheres with an Improved Conducting Path Preservation for Lithium-Ion Battery
- Authors
- Park, Eunjun; Kim, Jeonghun; Chung, Dong Jae; Park, Min-Sik; Kim, Hansu; Kim, Jung Ho
- Issue Date
- Oct-2016
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- core-shell materials; lithium-ion batteries; metal oxides; polymers; silicon
- Citation
- CHEMSUSCHEM, v.9, no.19, pp.2754 - 2758
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMSUSCHEM
- Volume
- 9
- Number
- 19
- Start Page
- 2754
- End Page
- 2758
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/5497
- DOI
- 10.1002/cssc.201600798
- ISSN
- 1864-5631
- 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) (PEDOT:PSS), is employed as a flexible electrical interconnector to improve the electrochemical performance of Si/SiOx nanosphere 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 h g−1 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.
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