Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 27, Issue -, Pages 9-13Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.10.039
Keywords
Metal-organic frameworks; Porosity; Cobalt hydroxide; Voltammetry; Membrane; Electrocatalysis
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Funding
- EPSRC [EP/H046305/1]
- University of Bath
- EPSRC through the Doctoral Training Centre at the Centre for Sustainable Chemical Technologies
- EPSRC [EP/H046305/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H046305/1] Funding Source: researchfish
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[Co(bdc)(DMF)] (Co-MOF-71 bdc = 1,4-benzenedicarboxylate DMF = N,N-dimethylformamide) has been previously reported to be a suitable supercapacitor material in spite of being electrically insulating and redox silent. The phenomenon can be explained due to a facile surface hydrolysis of Co-MOF-71 microcrystals in alkaline aqueous media via conformal transformation into a porous cobalt hydroxide. The resulting volume decrease during transformation of the MOF precursor (without a significant change in shape) is beneficial and ensures formation of a more active porous cobalt hydroxide product with high pseudo capacitance and electrocatalytic activity. The high molecular scale porosity of the MOF precursor offers benefits due to conformal transformation into products with high nano-scale porosity. (c) 2012 Elsevier B.V. All rights reserved.
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