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A Rechargeable Hydrogen Battery Based on Ru Catalysis
Author(s) -
Hsu ShihFan,
Rommel Susanne,
Eversfield Philipp,
Muller Keven,
Klemm Elias,
Thiel Werner R.,
Plietker Bernd
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201310972
Subject(s) - formic acid , catalysis , battery (electricity) , hydrogen , hydrogen storage , energy storage , decomposition , chemical engineering , process (computing) , lead–acid battery , materials science , fuel cells , chemistry , process engineering , inorganic chemistry , computer science , organic chemistry , engineering , thermodynamics , power (physics) , physics , operating system
Apart from energy generation, the storage and liberation of energy are among the major problems in establishing a sustainable energy supply chain. Herein we report the development of a rechargeable H 2 battery which is based on the principle of the Ru‐catalyzed hydrogenation of CO 2 to formic acid (charging process) and the Ru‐catalyzed decomposition of formic acid to CO 2 and H 2 (discharging process). Both processes are driven by the same catalyst at elevated temperature either under pressure (charging process) or pressure‐free conditions (discharging process). Up to five charging–discharging cycles were performed without decrease of storage capacity. The resulting CO 2 /H 2 mixture is free of CO and can be employed directly in fuel‐cell technology.