Specific synthesis of CoS2 nanoparticles embedded in porous Al2O3 nanosheets for efficient hydrogen evolution and enhanced lithium storage

Ling Fang; Yan Zhang; Yongxin Guan; Huijuan Zhang; Shilong Wang; Yu Wang

doi:10.1039/C6TA10700A

Specific synthesis of CoS₂ nanoparticles embedded in porous Al₂O₃ nanosheets for efficient hydrogen evolution and enhanced lithium storage

Ling Fang,^a Yan Zhang,^a Yongxin Guan,^a Huijuan Zhang,^a Shilong Wang*^b and Yu Wang*^a

Author affiliations

* Corresponding authors

^a The State Key Laboratory of Mechanical Transmissions and the School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, P. R. China
E-mail: wangy@cqu.edu.cn

^b College of Mechanical Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, P. R. China
E-mail: slwang@cqu.edu.cn

Abstract

CoS₂ nanoparticles embedded in Al₂O₃ nanosheets (CoS₂ NP/Al₂O₃ NSs) have been designed and fabricated using a controllable hydrothermal process followed by a simple low-temperature sulfurization step. The as-prepared CoS₂ NP/Al₂O₃ NSs display combined properties of high nanoporosity, thin thickness and good structural stability. When used as an electrocatalyst for the hydrogen evolution reaction (HER), the composite demonstrates high catalytic activity, including a small overpotential of ∼53 mV, a small Tafel slope of 50.9 mV dec⁻¹ and remarkable stability. Moreover, the CoS₂ NP/Al₂O₃ NSs have a promising lithium-storage capability with high specific capacity (∼1150 mA h g⁻¹ at 100 mA g⁻¹ in the first cycle) and enhanced cycling stability (coulombic efficiency of around 96% for 150 cycles). The facile strategy used to synthesize the unique architecture could be expanded to the preparation of other transition metal sulfides for the HER and lithium ion batteries (LIBs).

Supplementary files

Publication details

The article was received on 13 Dec 2016, accepted on 10 Jan 2017 and first published on 10 Jan 2017

Article type: Paper

DOI: 10.1039/C6TA10700A

Citation: J. Mater. Chem. A, 2017,5, 2861-2869

Request permissions
Specific synthesis of CoS₂ nanoparticles embedded in porous Al₂O₃ nanosheets for efficient hydrogen evolution and enhanced lithium storage

L. Fang, Y. Zhang, Y. Guan, H. Zhang, S. Wang and Y. Wang, J. Mater. Chem. A, 2017, 5, 2861
DOI: 10.1039/C6TA10700A
If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using RightsLink. Go to our Instructions for using RightsLink page for details.

Authors contributing to RSC publications (journal articles, books or book chapters) do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:
For reproduction of material from NJC:
Reproduced from Ref. XX with permission from the Centre National de la Recherche Scientifique (CNRS) and The Royal Society of Chemistry.

For reproduction of material from PCCP:
Reproduced from Ref. XX with permission from the PCCP Owner Societies.

For reproduction of material from PPS:
Reproduced from Ref. XX with permission from the European Society for Photobiology, the European Photochemistry Association, and The Royal Society of Chemistry.

For reproduction of material from all other RSC journals and books:
Reproduced from Ref. XX with permission from The Royal Society of Chemistry.
If the material has been adapted instead of reproduced from the original RSC publication "Reproduced from" can be substituted with "Adapted from".

In all cases the Ref. XX is the XXth reference in the list of references.

If you are the author of this article you do not need to formally request permission to reproduce figures, diagrams etc. contained in this article in third party publications or in a thesis or dissertation provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:
For reproduction of material from NJC:
[Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC

For reproduction of material from PCCP:
[Original citation] - Reproduced by permission of the PCCP Owner Societies

For reproduction of material from PPS:
[Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC

For reproduction of material from all other RSC journals:
[Original citation] - Reproduced by permission of The Royal Society of Chemistry
If you are the author of this article you still need to obtain permission to reproduce the whole article in a third party publication with the exception of reproduction of the whole article in a thesis or dissertation.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Journal of Materials Chemistry A

Specific synthesis of CoS₂ nanoparticles embedded in porous Al₂O₃ nanosheets for efficient hydrogen evolution and enhanced lithium storage

Abstract

Supplementary files

Publication details

Specific synthesis of CoS₂ nanoparticles embedded in porous Al₂O₃ nanosheets for efficient hydrogen evolution and enhanced lithium storage

Search articles by author

Spotlight

Advertisements