Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Porous carbon derived from corncob as cathode host for Li–Se battery

Porous carbon derived from corncob as cathode host for Li–Se battery Corncob was employed as low-cost carbon source to prepare spongy porous carbon by KOH activation and carbonization. The corncob-derived porous carbon (CPC) had multi-level pore structure, with microporous and mesoporous surface and microporous interior. So, CPC had a large specific surface area of 1155 m2·g−1 and micropore volume of 0.431 cm3·g−1. Se/CPC was fabricated through ball milling and melt diffusion of selenium and CPC mixture powder. Used as cathode active material of Li–Se battery, Se/CPC had a Se loading of 59.83% and maintained a 3D porous structure, providing electrochemical reaction area and volume expansion space. In Li–Se batteries in carbonate electrolyte, the Se/CPC cathode showed a reversible capacity of 608.3 mAh·g−1, close to theoretical value (675 mAh·g−1) at 0.1 C (1 C = 675 mA·g−1). After 100 cycles at 0.2 C, 213.2 mA h g−1 remained, while the coulomb efficiency maintained at about 100%. Rate capacity of the Se/CPC at different current densities kept 89.99% of its initial capacity (0.1 C). Thus, the application of corncob to Li–Se batteries provides cheap and environmentally friendly creativities for the preparation of space-confined selenium cathode. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Porous carbon derived from corncob as cathode host for Li–Se battery

Loading next page...
 
/lp/springer-journals/porous-carbon-derived-from-corncob-as-cathode-host-for-li-se-battery-n21cr6oKsk

References (36)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-022-04521-7
Publisher site
See Article on Publisher Site

Abstract

Corncob was employed as low-cost carbon source to prepare spongy porous carbon by KOH activation and carbonization. The corncob-derived porous carbon (CPC) had multi-level pore structure, with microporous and mesoporous surface and microporous interior. So, CPC had a large specific surface area of 1155 m2·g−1 and micropore volume of 0.431 cm3·g−1. Se/CPC was fabricated through ball milling and melt diffusion of selenium and CPC mixture powder. Used as cathode active material of Li–Se battery, Se/CPC had a Se loading of 59.83% and maintained a 3D porous structure, providing electrochemical reaction area and volume expansion space. In Li–Se batteries in carbonate electrolyte, the Se/CPC cathode showed a reversible capacity of 608.3 mAh·g−1, close to theoretical value (675 mAh·g−1) at 0.1 C (1 C = 675 mA·g−1). After 100 cycles at 0.2 C, 213.2 mA h g−1 remained, while the coulomb efficiency maintained at about 100%. Rate capacity of the Se/CPC at different current densities kept 89.99% of its initial capacity (0.1 C). Thus, the application of corncob to Li–Se batteries provides cheap and environmentally friendly creativities for the preparation of space-confined selenium cathode.

Journal

IonicsSpringer Journals

Published: Jun 1, 2022

Keywords: Li–Se battery; Cathode; Corncob; Biomass carbon; Se/C composite

There are no references for this article.