Advanced Energy Materials, volume 7, issue 18, pages 1602894

Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping

Zhifei Li 1
Clement Bommier 1
Zhi Sen Chong 1
Zelang Jian 1
Todd Wesley Surta 1
Zhenyu Xing 1
Jörg Neuefeind 2
William F. Stickle 3
P. Alex Greaney 4
Publication typeJournal Article
Publication date2017-05-23
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor27.8
ISSN16146832, 16146840
General Materials Science
Renewable Energy, Sustainability and the Environment
Abstract
Hard carbon is the leading candidate anode for commercialization of Na-ion batteries. Hard carbon has a unique local atomic structure, which is composed of nanodomains of layered rumpled sheets that have short-range local order resembling graphene within each layer, but complete disorder along the c-axis between layers. A primary challenge holding back the development of Na-ion batteries is that a complete understanding of the structure–capacity correlations of Na-ion storage in hard carbon has remained elusive. This article presents two key discoveries: first, the characteristics of hard carbons structure can be modified systematically by heteroatom doping, and second, that these structural changes greatly affect Na-ion storage properties, which reveals the mechanisms for Na storage in hard carbon. Specifically, via P or S doping, the interlayer spacing is dilated, which extends the low-voltage plateau capacity, while increasing the defect concentrations with P or B doping leads to higher sloping sodiation capacity. The combined experimental studies and first principles calculations reveal that it is the Na-ion-defect binding that corresponds to the sloping capacity, while the Na intercalation between graphenic layers causes the low-potential plateau capacity. The understanding suggests a new design principle of hard carbon anode: more reversibly binding defects and dilated turbostratic domains, given that the specific surface area is maintained low.

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GOST Copy
Li Z. et al. Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping // Advanced Energy Materials. 2017. Vol. 7. No. 18. p. 1602894.
GOST all authors (up to 50) Copy
Li Z., Bommier C., Chong Z. S., Jian Z., Surta T. W., Wang X., Xing Z., Neuefeind J., Stickle W. F., Dolgos M., Greaney P. A., Ji X. Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping // Advanced Energy Materials. 2017. Vol. 7. No. 18. p. 1602894.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1002/aenm.201602894
UR - https://doi.org/10.1002/aenm.201602894
TI - Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping
T2 - Advanced Energy Materials
AU - Bommier, Clement
AU - Chong, Zhi Sen
AU - Jian, Zelang
AU - Surta, Todd Wesley
AU - Stickle, William F.
AU - Li, Zhifei
AU - Wang, Xingfeng
AU - Xing, Zhenyu
AU - Neuefeind, Jörg
AU - Dolgos, Michelle
AU - Greaney, P. Alex
AU - Ji, Xiulei
PY - 2017
DA - 2017/05/23 00:00:00
PB - Wiley
SP - 1602894
IS - 18
VL - 7
SN - 1614-6832
SN - 1614-6840
ER -
BibTex |
Cite this
BibTex Copy
@article{2017_Li,
author = {Clement Bommier and Zhi Sen Chong and Zelang Jian and Todd Wesley Surta and William F. Stickle and Zhifei Li and Xingfeng Wang and Zhenyu Xing and Jörg Neuefeind and Michelle Dolgos and P. Alex Greaney and Xiulei Ji},
title = {Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping},
journal = {Advanced Energy Materials},
year = {2017},
volume = {7},
publisher = {Wiley},
month = {may},
url = {https://doi.org/10.1002/aenm.201602894},
number = {18},
pages = {1602894},
doi = {10.1002/aenm.201602894}
}
MLA
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MLA Copy
Li, Zhifei, et al. “Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping.” Advanced Energy Materials, vol. 7, no. 18, May. 2017, p. 1602894. https://doi.org/10.1002/aenm.201602894.
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