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Cited 7 time in webofscience Cited 9 time in scopus
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Outstanding performance of direct urea/hydrogen peroxide fuel cell based on precious metal-free catalyst electrodes

Authors
Eisa, TasnimPark, Sung-GwanMohamed, Hend OmarAbdelkareem, Mohammad AliLee, JieunYang, EuntaeCastano, PedroChae, Kyu-Jung
Issue Date
1-Aug-2021
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Direct urea fuel cell; Urea electro-oxidation; H2O2 reduction; Nickel nanorods; Precious metal free; Prussian blue
Citation
ENERGY, v.228
Indexed
SCIE
SCOPUS
Journal Title
ENERGY
Volume
228
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/3385
DOI
10.1016/j.energy.2021.120584
ISSN
0360-5442
Abstract
Direct urea/hydrogen peroxide fuel cells (DUHP-FCs) can produce electrical energy by recycling urea-rich wastewater. This study expands the commerciality of DUHP-FC by removing precious metals from their design. Nickel nanorod/nickel foam (NNR/NF) was fabricated using hydrothermal treatment to be used as the anode, and Prussian blue coating was deposited by potentiostatic electrodeposition onto hydrophilic carbon felt at the cathode (PB/CF). The anode exhibited a 7-folds higher current density than bare NF at 0-2 M urea, and lower charge transfer resistance. The cathode reported a high H2O2 reduction current. In addition, fuel cell tests indicated current density dependency on H2O2 concentration and cell voltage dependency on KCl concentration. A competitive maximum power density of 10.6 mW cm(-2) was achieved at 0.98 open circuit voltage and 45 mA cm(-2) maximum current density, in 0.33 M urea vs 2 M KCl and 2 M H2O2, exclusively via diffusive mass transfer. These findings indicate the practical application of DUHP-FC on a large scale. (C) 2021 Elsevier Ltd. All rights reserved.
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해양과학대학 (해양환경공학과)
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