期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 9, 页码 8107-8112出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b15666
关键词
Na-ion battery; cathode battery materials; vanadium hexacyanoferrate; Prussian blue analogues; intercalation
资金
- cluster of excellence Nanosystems Initiative Munich (NIM)
The so-called Prussian blue analogues (PBAs) are spotlighted as promising cathode materials for aqueous Na-ion batteries regarding their good performance for the application in future large-scale energy storage systems. In this work, we demonstrate that one of the PBA representatives, namely Na2VOx[Fe(CN)(6)] thin films (VHCFs), is a promising cathode material for aqueous Na-ion batteries with very positive intercalation/deintercalation potentials, which might likely designate a new benchmark in the field. To maximize the material utilization, we have formed VHCF thin films on model current collectors from aqueous solutions. The resulting films demonstrated a very positive half-charge potential (Delta E-I/2 approximate to 0.91 V vs Ag/AgCl reference electrode) in acidic media with a specific capacity of similar to 80 mAh g(-1) recorded at high C-rates (30 C) in 1 M LiNO3, 3 M NaNO3 and 3 M KNO3 electrolytes in the presence of 3.6 M H2SO4. It is also shown that well-known solvation effects related to the nature of the alkali metal cations during intercalation and deintercalation are surprisingly not pronounced in the case of VHCFs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据