Si/SiOx-conductive polymer core-shell nanospheres with an improved conducting path preservation for lithium-ion battery
RIS ID
109444
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.
Publication Details
Park, E., Kim, J., Chung, D., Park, M., Kim, H. & Kim, J. (2016). Si/SiOx-conductive polymer core-shell nanospheres with an improved conducting path preservation for lithium-ion battery. ChemSusChem: chemistry and sustainability, energy and materials, 9 (19), 2754-2758.