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Title: Hard-Soft Composite Carbon as a Long-Cycling and High-Rate Anode for Potassium-Ion Batteries

Abstract

There exist tremendous needs for sustainable storage solutions for intermittent renewable energy sources, such as solar and wind energy. Thus, systems based on Earth-abundant elements deserve much attention. Potassium-ion batteries represent a promising candidate because of the abundance of potassium resources. As for the choices of anodes, graphite exhibits encouraging potassium-ion storage properties; however, it suffers limited rate capability and poor cycling stability. Here in this paper, nongraphitic carbons as K-ion anodes with sodium carboxymethyl cellulose as the binder are systematically investigated. Compared to hard carbon and soft carbon, a hard–soft composite carbon with 20 wt% soft carbon distributed in the matrix phase of hard carbon microspheres exhibits highly amenable performance: high capacity, high rate capability, and very stable long-term cycling. In contrast, pure hard carbon suffers limited rate capability, while the capacity of pure soft carbon fades more rapidly.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [2];  [1]
  1. Oregon State Univ., Corvallis, OR (United States). Dept. of Chemistry
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1362157
Report Number(s):
BNL-113906-2017-JA
Journal ID: ISSN 1616-301X; R&D Project: 16060; 16060; KC0403020
Grant/Contract Number:
SC0012704; SC-00112704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advanced Functional Materials
Additional Journal Information:
Journal Volume: 27; Journal Issue: 26; Journal ID: ISSN 1616-301X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY, AND ECONOMY; 25 ENERGY STORAGE; Carbon anode; Hard carbon; Soft carbon; Non-graphitic; Potassium-ion batteries

Citation Formats

Jian, Zelang, Hwang, Sooyeon, Li, Zhifei, Hernandez, Alexandre S., Wang, Xingfeng, Xing, Zhenyu, Su, Dong, and Ji, Xiulei. Hard-Soft Composite Carbon as a Long-Cycling and High-Rate Anode for Potassium-Ion Batteries. United States: N. p., 2017. Web. doi:10.1002/adfm.201700324.
Jian, Zelang, Hwang, Sooyeon, Li, Zhifei, Hernandez, Alexandre S., Wang, Xingfeng, Xing, Zhenyu, Su, Dong, & Ji, Xiulei. Hard-Soft Composite Carbon as a Long-Cycling and High-Rate Anode for Potassium-Ion Batteries. United States. doi:10.1002/adfm.201700324.
Jian, Zelang, Hwang, Sooyeon, Li, Zhifei, Hernandez, Alexandre S., Wang, Xingfeng, Xing, Zhenyu, Su, Dong, and Ji, Xiulei. 2017. "Hard-Soft Composite Carbon as a Long-Cycling and High-Rate Anode for Potassium-Ion Batteries". United States. doi:10.1002/adfm.201700324.
@article{osti_1362157,
title = {Hard-Soft Composite Carbon as a Long-Cycling and High-Rate Anode for Potassium-Ion Batteries},
author = {Jian, Zelang and Hwang, Sooyeon and Li, Zhifei and Hernandez, Alexandre S. and Wang, Xingfeng and Xing, Zhenyu and Su, Dong and Ji, Xiulei},
abstractNote = {There exist tremendous needs for sustainable storage solutions for intermittent renewable energy sources, such as solar and wind energy. Thus, systems based on Earth-abundant elements deserve much attention. Potassium-ion batteries represent a promising candidate because of the abundance of potassium resources. As for the choices of anodes, graphite exhibits encouraging potassium-ion storage properties; however, it suffers limited rate capability and poor cycling stability. Here in this paper, nongraphitic carbons as K-ion anodes with sodium carboxymethyl cellulose as the binder are systematically investigated. Compared to hard carbon and soft carbon, a hard–soft composite carbon with 20 wt% soft carbon distributed in the matrix phase of hard carbon microspheres exhibits highly amenable performance: high capacity, high rate capability, and very stable long-term cycling. In contrast, pure hard carbon suffers limited rate capability, while the capacity of pure soft carbon fades more rapidly.},
doi = {10.1002/adfm.201700324},
journal = {Advanced Functional Materials},
number = 26,
volume = 27,
place = {United States},
year = 2017,
month = 5
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on May 5, 2018
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