In-situ formation of hollow hybrids composed of cobalt sulfides embedded within porous carbon polyhedra/carbon nanotubes for high-performance lithium-ion batteries

Renbing Wu; Dan Ping Wang; Xianhong Rui; Bo Liu; Kun Zhou; Adrian W K Law; Qingyu Yan; Jun Wei; Zhong Chen

doi:10.1002/adma.201500783

In-situ formation of hollow hybrids composed of cobalt sulfides embedded within porous carbon polyhedra/carbon nanotubes for high-performance lithium-ion batteries

Adv Mater. 2015 May 20;27(19):3038-44. doi: 10.1002/adma.201500783. Epub 2015 Apr 9.

Authors

Renbing Wu^{1

2}, Dan Ping Wang^{3

4}, Xianhong Rui⁴, Bo Liu^{1

2}, Kun Zhou^{1

2}, Adrian W K Law^{1

5}, Qingyu Yan⁴, Jun Wei⁶, Zhong Chen^{3

4}

Affiliations

¹ DHI-NTU Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 CleanTech Loop, Singapore, 637141, Singapore.
² School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
³ Energy Research Institute, Nanyang Technological University, 1 CleanTech Loop, Singapore, 637141, Singapore.
⁴ School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
⁵ School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
⁶ Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore, 638075, Singapore.

PMID: 25856242
DOI: 10.1002/adma.201500783

Abstract

3D hollow hybrid composites with ultrafine cobalt sulfide nanoparticles uniformly embedded within the well-graphitized porous carbon polyhedra/carbon nanotubes framework are rationally fabricated using a green and one-step method involving the simultaneous pyrolysis and sulfidation of ZIF-67. Because of the synergistic coupling effects favored by the unique nanohybridization, these composites exhibit high specific capacity, excellent cycle stability, and superior rate capability when evaluated as electrodes in lithium-ion batteries.

Keywords: batteries; carbon nanotubes; carbon polyhedral; cobalt sulfides; hollow hybrids.