Alternative strategy for a safe rechargeable battery

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Helena Braga (Author) FEUP; N. S. Grundish (Author) Other; A. J. Murchison (Author) Other; J. B. Goodenough (Author) Other

Journal

Title: Energy and Environmental Sciences

Vol. 10

Pages: 331-336

ISSN: 1754-5692

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 113 Citations

Scopus - 148 Citations

Other information

Authenticus ID: P-00M-CPA

DOI: 10.1039/c6ee02888h

Abstract (EN): The advent of a Li+ or Na+ glass electrolyte with a cation conductivity sigma(i) 4 10 > 2 S cm(-1) at 25 degrees C and a motional enthalpy Delta H-m = 0.06 eV that is wet by a metallic lithium or sodium anode is used to develop a new strategy for an all-solid-state, rechargeable, metal-plating battery. During discharge, a cell plates the metal of an anode of high-energy Fermi level such as lithium or sodium onto a cathode current collector with a low-energy Fermi level; the voltage of the cell may be determined by a cathode redox center having an energy between the Fermi levels of the anode and that of the cathode current collector. This strategy is demonstrated with a solid electrolyte that not only is wet by the metallic anode, but also has a dielectric constant capable of creating a large electric-double-layer capacitance at the two electrode/electrolyte interfaces. The result is a safe, low-cost, lithium or sodium rechargeable battery of high energy density and long cycle life.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6