Synthesis and electrochemical characterisation of anode material NaxFe2/3Mn1/3O2 for Na-ION batteries

Authors

  • Thi Kieu Duyen Nguyen, Pham Phuong Nam Le, Hong Diem Chau, Le Thanh Nguyen Huynh, My Loan Phung Le*, Van Man Tran
  • Thi Thu Trang Nguyen

Abstract

In this research, the anode material NaxFe2/3Mn1/3O2 (NaFMO) has been successfully prepared by the co-precipitation method in an inert atmosphere. O3-NaxFe2/3Mn1/3O2 phase was formed after calcination of the precipitation at 900°C for 12, 15, 24, and 36 hours. After calcination for 12 hours, the obtained material had the best characteristics, with large lattice parameters (a=b=2.9738 Å, c=16.3815 Å and V=125.46 Å3) and a specific capacity up to 118 mAh/g in the voltage range of 1.5-4 V (vs. Na+/Na) at the current rate C/10. The specific capacity of the NaxFe2/3Mn1/3O2 material was due to the contribution of both redox pairs Mn4+/Mn3+ và Fe4+/Fe3+. In addition, the charge-discharge curves shown a large drop of ~ 500 mV, which indicated a large internal resistance of the material.

Classification number

2.5

Author Biographies

Thi Kieu Duyen Nguyen, Pham Phuong Nam Le, Hong Diem Chau, Le Thanh Nguyen Huynh, My Loan Phung Le*, Van Man Tran

Applied Physicical Chemistry, VNUHCM-University of Science

Thi Thu Trang Nguyen

Ho Chi Minh City University of Education

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Published

2020-06-25

Received: 9 September 2019; accepted: 18 October 2019

How to Cite

Nguyen Thi Kieu Duyen, Le Pham Phuong Nam, Chau Hong Diem, Huynh Le Thanh Nguyen, Le My Loan Phung*, Tran Van Man, & Nguyen Thi Thu Trang. (2020). Synthesis and electrochemical characterisation of anode material NaxFe2/3Mn1/3O2 for Na-ION batteries . Version B of Vietnam Journal of Science and Technology, 62(6). Retrieved from https://b.vjst.vn/index.php/ban_b/article/view/43

Issue

Vol. 62 No. 6 (2020): Volume 62 - Number 6 - June 2020

Section

Engineering and Technology

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