Thin Film Electrodes of Prussian Blue Analogues with Rapid Li+ Intercalation

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Published 15 March 2012 • ©2012 The Japan Society of Applied Physics
, , Citation Yutaka Moritomo et al 2012 Appl. Phys. Express 5 041801 DOI 10.1143/APEX.5.041801

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1 Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan

2 Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba, Tsukuba 305-8571, Japan

3 School of Science and Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan

Dates

  1. Received 31 January 2012
  2. Accepted 1 March 2012
  3. Published

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Abstract

A new class of electrode materials are being intensively investigated to achieve a low-cost Li+ secondary battery (LIB) with a high discharge rate. Here, we investigated the discharge rate in thin film electrodes of the Prussian blue analogues (Li,Na)4y-2M[Fe(CN)6]yzH2O (M =Ni, Co, Mn, and Cd). Except for the Co compound, the capacities at 100 C exceed 60% of those at 1 C. We further investigated the electronic and crystal structures of Prussian blue analogues against Li+ concentration (x). On the basis of these data, we will discuss the origin of the rapid Li+ intercalation.

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10.1143/APEX.5.041801