Journal
ELECTROCHIMICA ACTA
Volume 206, Issue -, Pages 199-206Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.04.138
Keywords
Layered material; Sol-gel synthesis; High voltage cathode; Charge-discharge cycling; Sodium-ion batteries
Categories
Funding
- Department of Biotechnology (DBT), Government of India [BT/350/NE/TBP/2012]
- IISER Thiruvananthapuram
- Department of Science and Technology (DST), Government of India [444S/2010]
Ask authors/readers for more resources
There is a great interest in developing efficient electrode materials for sodium-ion batteries, which are currently being projected as a promising alternative to lithium-ion batteries. Here we report the synthesis of a sodium-ion battery cathode material, Na0.5Ni0.25Mn0.75O2, through a sol-gel method. The as-synthesized layered Na0.5Ni0.25Mn0.75O2 material exhibits a layered P2-type structure, and shows excellent electrochemical properties when studied as a cathode for sodium-ion batteries, with a specific discharge capacity of 210 mAh g(-1) and a good capacity retention of 80% at 50th cycle in the voltage range from 1.5 to 4.4 V at 0.1C. The layered Na0.5Ni0.25Mn0.75O2 material also exhibits good cycling stability with remarkably smooth and flat charge-discharge profiles at a high voltage of 4.1 V vs Na. The overall electrochemical performance of layered Na0.5Ni0.25Mn0.75O2 is quite promising, and hence the present study will greatly contribute to the on-going search for advanced and efficient electrodes for sodium-ion batteries. (c) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available