期刊
JOURNAL OF POWER SOURCES
卷 302, 期 -, 页码 61-69出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.10.033
关键词
Iron pyrophosphate; Composite electrodes; Multi walled carbon nanotubes; Sodium ion batteries
资金
- Fondazione Cariplo [2011-0312]
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT AMP
- Future Planning [NRF-2010-C1AAA001-2010-0029031]
Among the viable positive electrode materials recently proposed for Na-ion secondary batteries, Na2FeP2O7 was investigated thanks to its facile preparation, the use of highly abundant and low cost raw materials, and the highest thermal stability among all others cathode materials. In the present work the electrochemical features of the Na2FeP2O7 are improved by synthesizing a Na2FeP2O7-carbon nanotubes composite with prominent high-rate performances. The material shows a reversible specific capacity of 86 mAh g(-1) for 140 cycles at 1C and 68 mAh g(-1) at 10C. An in depth investigation about the Na+ diffusion rates inside the material was conducted by electrochemical impedance spectroscopy. (C) 2015 Elsevier B.V. All rights reserved.
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