Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7730193 | Journal of Power Sources | 2016 | 9 Pages |
Abstract
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 gâ1 for 140 cycles at 1C and 68 mAh gâ1 at 10C. An in depth investigation about the Na+ diffusion rates inside the material was conducted by electrochemical impedance spectroscopy.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Gianluca Longoni, Ji Eun Wang, Young Hwa Jung, Do Kyung Kim, Claudio M. Mari, Riccardo Ruffo,