Co3O4 microcubes with exceptionally high conductivity using a CoAl layered double hydroxide precursor via soft chemically synthesized cobalt carbonate

Churchil A. Antonyraj; Divesh N. Srivastava; Gurudas P. Mane; Sivashunmugam Sankaranarayanan; Ajayan Vinu; Kannan Srinivasan

doi:10.1039/C4TA00561A

Co₃O₄ microcubes with exceptionally high conductivity using a CoAl layered double hydroxide precursor via soft chemically synthesized cobalt carbonate†

Churchil A. Antonyraj,^a Divesh N. Srivastava,^be Gurudas P. Mane,^c Sivashunmugam Sankaranarayanan,^ae Ajayan Vinu^cd and Kannan Srinivasan*^ae

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* Corresponding authors

^a Discipline of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), GB Marg, Bhavnagar 364002, India
E-mail: skannan@csmcri.org, kanhem1@yahoo.com
Fax: +91-278-2567562
Tel: +91-278-2567760 ext. 7030

^b Analytical Discipline and Centralized Instrument Facility, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), GB Marg, Bhavnagar 364002, India

^c International Center for Materials Nanoarchitectonics, World Premier International Research Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

^d Multifunctional Nanoporous Materials Group, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads, Brisbane Qld 4072, Australia

^e Academy of Scientific and Innovative Research, Central Salt and Marine Chemicals Research Institute, GB Marg, Bhavnagar 364002, India

Abstract

Cubic microparticles of Co₃O₄ spinel were synthesized by calcination of CoCO₃ obtained using CoAl layered double hydroxide (LDH) as a unitary precursor through soft-chemical decomposition. The obtained cobalt spinel showed an exceptionally high electrical conductivity at room temperature. This is attributed to high concentrations of charge carriers (Co⁴⁺), unique morphology, high reduction temperature and low activation barrier.

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Article information

DOI: https://doi.org/10.1039/C4TA00561A
Article type: Communication
Submitted: 31 Jan 2014
Accepted: 17 Feb 2014
First published: 18 Feb 2014

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J. Mater. Chem. A, 2014,2, 6301-6304

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Co₃O₄ microcubes with exceptionally high conductivity using a CoAl layered double hydroxide precursor via soft chemically synthesized cobalt carbonate

C. A. Antonyraj, D. N. Srivastava, G. P. Mane, S. Sankaranarayanan, A. Vinu and K. Srinivasan, J. Mater. Chem. A, 2014, 2, 6301 DOI: 10.1039/C4TA00561A

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Journal of Materials Chemistry A