An effective hybrid organic/inorganic inhibitor for alkaline aluminum-air fuel cells

Yujuan Nie, Jianxin Gao, Erdong Wang, Luhua Jiang, Liang An, Xuyun Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

An effective approach is to add inhibitors in electrolytes to reduce the anode corrosion rate. In this work, Na2SnO3and casein are proposed to act as a hybrid inhibitor in alkaline aluminum-air fuel cell. It is demonstrated that 0.05 M Na2SnO3and 0.6 g L−1casein offers the strongest corrosion protection, reducing the corrosion rate by approximately one order of magnitude. The corrosion inhibition is mainly attributed to the inhibition of cathodic reaction process. In addition, the analysis on the morphology and composition of the aluminum surface suggests that casein can greatly promote the deposition of tin to form a uniform and stable layer on the aluminum surface, due to the strong adsorption of polar functional groups in casein. Furthermore, the use of the hybrid inhibitor in aluminum-air fuel cell contributes to an increase of discharge capacity by 89.3%.
Original languageEnglish
Pages (from-to)478-485
Number of pages8
JournalElectrochimica Acta
Volume248
DOIs
Publication statusPublished - 10 Sep 2017

Keywords

  • Aluminum
  • Anode corrosion
  • Casein
  • Fuel cell
  • Hybrid inhibitor

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this