• 文献标题:   In-situ PECVD-enabled graphene-V2O3 hybrid host for lithium-sulfur batteries
  • 文献类型:   Article
  • 作  者:   SONG YZ, ZHAO W, WEI N, ZHANG L, DING F, LIU ZF, SUN JY
  • 作者关键词:   lithiumsulfur batterie, polysulfide shuttle, plasmaenhanced chemical vapor deposition, redox kinetic, graphenev2o3 hybrid
  • 出版物名称:   NANO ENERGY
  • ISSN:   2211-2855 EI 2211-3282
  • 通讯作者地址:   Soochow Univ
  • 被引频次:   26
  • DOI:   10.1016/j.nanoen.2018.09.002
  • 出版年:   2018

▎ 摘  要

Lithium-sulfur (Li-S) batteries have been regarded as promising candidates for current energy-storage technologies due to their remarkable advantages in energy density and theoretical capacity. However, one of the daunting challenges remained for advanced Li-S systems thus far deals with the synchronous suppression of polysulfide (LiPS) shuttle and acceleration of redox kinetics. Herein, a cooperative interface bridging adsorptive V2O3 and conductive graphene is constructed in-situ by virtue of direct plasma-enhanced chemical vapor deposition (PECVD), resulting in the design of a novel V2O3-graphene hybrid host to synergize the LiPS entrapment and conversion. The redox kinetics and electrochemical performances of thus-derived cathodes were accordingly enhanced owing to the smooth adsorption-diffusion-conversion of LiPSs even at a sulfur mass loading of 3.7 mg cm(-2). Such interfacial engineering offers us a valuable opportunity to gain insight into the comprehensive regulation of LiPS anchoring ability, electrical conductivity and ion diffusive capability in hybrid hosts on suppressing the LiPS shuttle and propelling the redox kinetics. Our devised PECVD route might pave a new route toward the facial and economic design of hetero-phased multi-functional hosts for high-performance Li-S systems.