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Hydrolysis Batteries: Generating Electrical Energy during Hydrogen Absorption
Author(s) -
Xiao Rui,
Chen Jun,
Fu Kai,
Zheng Xinyao,
Wang Teng,
Zheng Jie,
Li Xingguo
Publication year - 2018
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.201711666
Subject(s) - hydrolysis , battery (electricity) , chemistry , hydrogen , absorption (acoustics) , inorganic chemistry , materials science , organic chemistry , composite material , power (physics) , physics , quantum mechanics
The hydrolysis reaction of aluminum can be decoupled into a battery by pairing an Al foil with a Pd‐capped yttrium dihydride (YH 2 –Pd) electrode. This hydrolysis battery generates a voltage around 0.45 V and leads to hydrogen absorption into the YH 2 layer. This represents a new hydrogen absorption mechanism featuring electrical energy generation during hydrogen absorption. The hydrolysis battery converts 8–15 % of the thermal energy of the hydrolysis reaction into usable electrical energy, leading to much higher energy efficiency compared to that of direct hydrolysis.