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

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

Content Provider	United States Department of Energy Office of Scientific and Technical Information (OSTI.GOV)
Author	Jian, Zelang Hwang, Sooyeon Li, Zhifei Wang, Xingfeng Su, Dong
Organization	Brookhaven National Laboratory (BNL), Upton, NY (United States)
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.
Sponsorship	USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Related Links	https://www.osti.gov/biblio/1362157
File Format	PDF
ISSN	1616301X
DOI	10.1002/adfm.201700324
Journal	Advanced Functional Materials
Volume Number	27
Issue Number	26
Language	English
Publisher	Wiley
Publisher Date	2017-05-05
Publisher Place	United States
Access Restriction	Open
Subject Keyword	ENERGY PLANNING, POLICY, AND ECONOMY ENERGY STORAGE Carbon anode Hard carbon Soft carbon Non-graphitic Potassium-ion batteries
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Biomaterials Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrochemistry

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