Estimation of energy efficiency in neptunium redox flow batteries by the standard rate constants

K. Hasegawa, A. Kimura, Tomoo Yamamura, Y. Shiokawa

Research output: Contribution to journalConference article

21 Citations (Scopus)

Abstract

The light actinide has two kinds of the isostructural redox couple, An 4+ /An 3+ and AnO 2 2+ /AnO 2 + . The battery with these couples is expected to be excellent energy efficiency due to the rapid electrode reactions. In the present paper, the standard rates for Np 4+ /Np 3+ and NpO 2 2+ /NpO 2 + electrode reactions were evaluated by the cyclic voltammetry and the energy efficiency in the neptunium battery was estimated from the standard rate constants. As a result, the efficiency is found to be excellent. Moreover, the uranium battery with U 4+ /U 3+ and UO 2 2+ /UO 2 + couples is expected to be feasible in the aprotic solvents.

Original languageEnglish
Pages (from-to)593-595
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume66
Issue number2-4
DOIs
Publication statusPublished - 2005 Feb 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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