Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 21, Pages 5734-5737Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201701816
Keywords
carbon dioxide; electrochemistry; formate hydrolysis; fuel cells
Categories
Funding
- National Natural Science Foundation of China [U1261112]
- Research Project of Chinese Ministry of Education [113055A]
- 111 Project [B16038]
- Xi'an Jiaotong University
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A barrier that limits the development of the conventional cation-exchange membrane direct liquid fuel cells (CEM-DLFCs) is that the CEM-DLFCs need additional base to offer both alkaline environment and charge carriers. Herein, we propose a Na+-conducting direct formate fuel cell (Na-DFFC) that is operated in the absence of added base. A proof-of-concept Na-DFFC yields a peak power density of 33 mW cm(-2) at 60 degrees C, mainly because the hydrolysis of sodium formate provides enough OH- and Na+ ions, proving the conceptual feasibility. Moreover, contrary to the conventional chlor-alkali process, this Na-DFFC enables to generate electricity and produce NaOH simultaneously without polluting the environment. The Na-DFFC runs stably during 13 hours of continuous operation at a constant current of 10 mA, along with a theoretical production of 195 mg NaOH. This work presents a new type of electrochemical conversion device that possesses a wide range of potential applications.
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