Outstanding performance of direct urea/hydrogen peroxide fuel cell based on precious metal-free catalyst electrodes
- Authors
- Eisa, Tasnim; Park, Sung-Gwan; Mohamed, Hend Omar; Abdelkareem, Mohammad Ali; Lee, Jieun; Yang, Euntae; Castano, Pedro; Chae, Kyu-Jung
- Issue Date
- 1-Aug-2021
- Publisher
- Pergamon Press 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.gnu.ac.kr/handle/sw.gnu/3385
- DOI
- 10.1016/j.energy.2021.120584
- ISSN
- 0360-5442
1873-6785
- 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.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 해양과학대학 > Department of Marine Environmental Engineering > Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.gnu.ac.kr/handle/sw.gnu/3385)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.