Issue 35, 2018

Synthesizing higher-capacity hard-carbons from cellulose for Na- and K-ion batteries

Abstract

Non-graphitizable hard carbons are synthesized through carbonization of glucose, sucrose, maltose, cellulose, glycogen, and amylopectin. Cellulose-derived carbon delivers superior reversible sodiation capacity, and optimal carbonization for a higher capacity Na-ion battery is found to be two-step heating of cellulose at 275 °C and 1300–1500 °C in air and argon, respectively. The hard carbon delivers a higher reversible capacity of 353 mA h g−1 in a Na cell. The 275 °C heating is important to regulate dehydration and cross-linkage degrees of cellulose, which affect the nano-scale structure of hard carbons. The cellulose-derived carbons deliver 523 and 290 mA h g−1 in Li and K cells, respectively.

Graphical abstract: Synthesizing higher-capacity hard-carbons from cellulose for Na- and K-ion batteries

Supplementary files

Article information

Article type
Communication
Submitted
02 Jun 2018
Accepted
31 Jul 2018
First published
04 Aug 2018

J. Mater. Chem. A, 2018,6, 16844-16848

Author version available

Synthesizing higher-capacity hard-carbons from cellulose for Na- and K-ion batteries

H. Yamamoto, S. Muratsubaki, K. Kubota, M. Fukunishi, H. Watanabe, J. Kim and S. Komaba, J. Mater. Chem. A, 2018, 6, 16844 DOI: 10.1039/C8TA05203D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements