Journal
APPLIED PHYSICS EXPRESS
Volume 6, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.6.025802
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Funding
- Canon Foundation
- Ministry of Education, Culture, Sports, Science and Technology, Japan [21244052]
- Grants-in-Aid for Scientific Research [21244052] Funding Source: KAKEN
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We investigated structural and electrochemical properties of thin film electrodes of cobalt hexacyanoferrate, NaxCo[Fe(CN)(6)](0.90)2.9H(2)O, against x. The compound exhibits a high capacity of 135 mAh/g and an average operating voltage of 3.6V against Na, with a good cyclability. The discharge curve exhibits two plateaus at approximate to 3.8 and approximate to 3.4 V, which are ascribed to the reduction processes of Fe3+ and Co3+, respectively. The ex situ X-ray diffraction (XRD) profiles reveal the robust nature of the host framework against Na+ intercalation/deintercalation. Thus, cobalt hexacyanoferrate is a promising candidate for the cathode material of sodium-ion secondary battery (SIB). (C) 2013 The Japan Society of Applied Physics
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