Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 17, Issue -, Pages 30-33Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.01.012
Keywords
Vanadium redox battery; Hybrid membrane; Hydrothermal method; Vanadium ion permeability
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Funding
- National Basic Research Program of China (973 Program) [2010CB227201]
- National Natural Science Foundation of China [51072234]
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A SPPEK/WO3 hybrid membrane was fabricated by a hydrothermal method to improve its performance in vanadium redox flow battery (VRB). The morphology of the hybrid membrane revealed that WO3 phase was well formed in the SPPEK matrix. At 50 mA/cm(2), the VRB single cell with SPPEK/WO3 membrane presented a lower self-discharge rate (218 h above 0.8 V) and a higher coulombic and energy efficiency (98.07% and 78.06%), ascribed to its higher ionic selectivity (5.81 x 10(4) min S/cm(3)), compared with Nafion system. The hybrid membrane exhibited a stable performance during 100 cycles. (C) 2012 Elsevier B.V. All rights reserved.
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