Hydrolysis Batteries: Generating Electrical Energy during Hydrogen Absorption

Rui Xiao, Jun Chen, Kai Fu, Xinyao Zheng, Teng Wang, Jie Zheng, Xingguo Li

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

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.

Original languageEnglish
Pages (from-to)2219-2223
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number8
DOIs
StatePublished - 19 Feb 2018
Externally publishedYes

Keywords

  • aluminum
  • batteries
  • hydrogen storage
  • hydrolysis
  • yttrium

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