Hydrolysis Batteries: Generating Electrical Energy during Hydrogen Absorption. (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. Volume 130:Number 8(2018)
• Page Start: 2241
• Page End: 2245
• Publication Date: 2018-01-12
• Subjects: Aluminium -- Batterien -- Hydrolyse -- Wasserstoffspeicherung -- Yttrium; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201711666
• Languages: English
• ISSNs: 0044-8249

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.