Hydrolysis Batteries: Generating Electrical Energy during Hydrogen Absorption. Issue 8 (12th January 2018)

• Record Type: Journal Article
• Authors: Xiao, Rui; Chen, Jun; Fu, Kai; Zheng, Xinyao; Wang, Teng; Zheng, Jie; Li, Xingguo
• Is Part Of: Angewandte Chemie international edition. Volume 57:Issue 8(2018)
• Page Start: 2219
• Page End: 2223
• Publication Date: 2018-01-12
• Subjects: aluminum -- batteries -- hydrogen storage -- hydrolysis -- yttrium; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201711666
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The hydrolysis reaction of aluminum can be decoupled into a battery by pairing an Al foil with a Pd‐capped yttrium dihydride (YH2 –Pd) electrode. This hydrolysis battery generates a voltage around 0.45 V and leads to hydrogen absorption into the YH2 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. Abstract : Heat of the action : The hydrolysis reaction of aluminum can be utilized as a battery to convert 8–15 % of the hydrolysis heat into electric energy, which also leads to a new hydrogen absorption mechanism featuring hydrogen absorption together with electrical energy generation.