Understanding the Electrochemical Mechanisms Induced by Gradient Mg2+ Distribution of Na-Rich Na3+xV2–xMgx(PO4)3/C for Sodium Ion Batteries
Hui Li
1, 2, 3
,
Hanmei Tang
2
,
Chuze Ma
2
,
Ying Bai
1
,
Judith Alvarado
2
,
Balachandran Radhakrishnan
2
,
Shyue Ping Ong
2
,
Feng Wua
4
,
Ying Meng
2
,
Chuan Wu
1, 4
3
State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd., Beijing 102211, China
|
4
Collaborative
Innovation Center of Electric Vehicles in Beijing, Beijing 100081, China
|
Publication type: Journal Article
Publication date: 2018-04-03
scimago Q1
wos Q1
SJR: 2.065
CiteScore: 12.0
Impact factor: 7.0
ISSN: 08974756, 15205002
Materials Chemistry
General Chemistry
General Chemical Engineering
Abstract
Metal-ion doping can improve the electrochemical performance of Na3V2(PO4)3. However, the reason for the enhanced electrochemical performance and the effects of cation doping on the structure of Na3V2(PO4)3 have yet been probed. Herein, Mg2+ is doped into Na3V2(PO4)3/C according to the first-principles calculation. The results indicate that Mg2+ prefers to reside in the V site and an extra electrochemical active Na+ is introduced to the Na3V2(PO4)3/C crystal to maintain the charge balance. The distribution of Mg2+ in the particle of Na3V2(PO4)3/C is further studied by electrochemical impedance spectroscopy. We find that the highest distribution of Mg2+ on the surface of the particles leads to facile surface electrochemical reactions for Mg2+-doped samples, especially at high rates.
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GOST
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Li H. et al. Understanding the Electrochemical Mechanisms Induced by Gradient Mg2+ Distribution of Na-Rich Na3+xV2–xMgx(PO4)3/C for Sodium Ion Batteries // Chemistry of Materials. 2018. Vol. 30. No. 8. pp. 2498-2505.
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Li H., Tang H., Ma C., Bai Y., Alvarado J., Radhakrishnan B., Ong S. P., Wua F., Meng Y., Wu C. Understanding the Electrochemical Mechanisms Induced by Gradient Mg2+ Distribution of Na-Rich Na3+xV2–xMgx(PO4)3/C for Sodium Ion Batteries // Chemistry of Materials. 2018. Vol. 30. No. 8. pp. 2498-2505.
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TY - JOUR
DO - 10.1021/acs.chemmater.7b03903
UR - https://doi.org/10.1021/acs.chemmater.7b03903
TI - Understanding the Electrochemical Mechanisms Induced by Gradient Mg2+ Distribution of Na-Rich Na3+xV2–xMgx(PO4)3/C for Sodium Ion Batteries
T2 - Chemistry of Materials
AU - Li, Hui
AU - Tang, Hanmei
AU - Ma, Chuze
AU - Bai, Ying
AU - Alvarado, Judith
AU - Radhakrishnan, Balachandran
AU - Ong, Shyue Ping
AU - Wua, Feng
AU - Meng, Ying
AU - Wu, Chuan
PY - 2018
DA - 2018/04/03
PB - American Chemical Society (ACS)
SP - 2498-2505
IS - 8
VL - 30
SN - 0897-4756
SN - 1520-5002
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2018_Li,
author = {Hui Li and Hanmei Tang and Chuze Ma and Ying Bai and Judith Alvarado and Balachandran Radhakrishnan and Shyue Ping Ong and Feng Wua and Ying Meng and Chuan Wu},
title = {Understanding the Electrochemical Mechanisms Induced by Gradient Mg2+ Distribution of Na-Rich Na3+xV2–xMgx(PO4)3/C for Sodium Ion Batteries},
journal = {Chemistry of Materials},
year = {2018},
volume = {30},
publisher = {American Chemical Society (ACS)},
month = {apr},
url = {https://doi.org/10.1021/acs.chemmater.7b03903},
number = {8},
pages = {2498--2505},
doi = {10.1021/acs.chemmater.7b03903}
}
Cite this
MLA
Copy
Li, Hui, et al. “Understanding the Electrochemical Mechanisms Induced by Gradient Mg2+ Distribution of Na-Rich Na3+xV2–xMgx(PO4)3/C for Sodium Ion Batteries.” Chemistry of Materials, vol. 30, no. 8, Apr. 2018, pp. 2498-2505. https://doi.org/10.1021/acs.chemmater.7b03903.