title: Si/SiOx-Conductive Polymer Core-Shell Nanospheres with an Improved Conducting Path Preservation for Lithium-Ion Battery.
abstract: Non-stoichiometric SiOxbased 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/SiOxnanosphere 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-1with 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.
authors: Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, South Korea.
authors: Eunjun
authors: E
authors: Park
authors: Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales, 2500, Australia.
authors: Jeonghun
authors: J
authors: Kim
authors: Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, South Korea.
authors: Dong Jae
authors: DJ
authors: Chung
authors: Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, South Korea.
authors: Min-Sik
authors: MS
authors: Park
authors: Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, South Korea. khansu@hanyang.ac.kr.
authors: Hansu
authors: H
authors: Kim
authors: Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales, 2500, Australia. jhk@uow.edu.au.
authors: Jung Ho
authors: JH
authors: Kim
mesh_terms: D011211:Electric Power Supplies; D054118:Nanospheres / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*
chemical_list: D012825:Silicon
keywords: core-shell materials; lithium-ion batteries; metal oxides; polymers; silicon