title: Graphitic Nanocarbon-Selenium Cathode with Favorable Rate Capability for Li-Se Batteries.
abstract: A well-organized selenium/carbon nanosheets nanocomposite(Se/CNSs) is prepared by confining chain-like Senmolecules in hierarchically micromesoporous carbon nanosheets. A unique two-dimensional morphology and high graphitization degree of carbon nanosheets benefits fast Li+/e-access to the active Se, which guarantees a high utilization of Se during the(de)lithiation process. Besides, the chain-like Se molecules confined in the carbon matrix could alleviate the shuttle effect of polyselenides and promise a stable electrochemistry. Therefore, the resultant Se/CNSs delivers a highly reversible capacity, a long cycle life and favorable rate capabilities. Furthermore, a Li-Se pouch cell built from a metallic Li anode and the as-prepared Se/CNSs cathode exhibits an excellent electrochemical performance, demonstrating the potential of Se/CNSs in serving future energy storage devices with high energy density.
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Shuai-Feng
authors.initials: SF
authors.lastname: Zhang
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Wen-Peng
authors.initials: WP
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China.
authors.forename: Sen
authors.identifier: http://orcid.org/0000-0002-0546-0626
authors.initials: S
authors.lastname: Xin
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Huan
authors.initials: H
authors.lastname: Ye
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Ya-Xia
authors.initials: YX
authors.lastname: Yin
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Yu-Guo
authors.identifier: http://orcid.org/0000-0003-0322-8476
authors.initials: YG
authors.lastname: Guo
keywords: Li−Se batteries; Se cathode; chain-like Se molecules; graphitic carbon; high-rate capability