P-Doped Cotton Stalk Carbon for High-Performance Lithium-Ion Batteries and Lithium-Sulfur Batteries

Yanbin Wei; Wenhua Cheng; Yudai Huang; Zhenjie Liu; Rui Sheng; Xingchao Wang; Dianzeng Jia; Xincun Tang

doi:10.1021/acs.langmuir.2c01336

P-Doped Cotton Stalk Carbon for High-Performance Lithium-Ion Batteries and Lithium-Sulfur Batteries

Langmuir. 2022 Sep 27;38(38):11610-11620. doi: 10.1021/acs.langmuir.2c01336. Epub 2022 Sep 14.

Authors

Yanbin Wei¹, Wenhua Cheng¹, Yudai Huang¹, Zhenjie Liu¹, Rui Sheng¹, Xingchao Wang¹, Dianzeng Jia¹, Xincun Tang²

Affiliations

¹ State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, Xinjiang 830017, People's Republic of China.
² School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, People's Republic of China.

PMID: 36104265
DOI: 10.1021/acs.langmuir.2c01336

Abstract

Biomass as a carbon material source is the characteristic of green chemistry. Herein, a series of hierarchical P-doped cotton stalk carbon materials (HPCSCMs) were prepared from cheap and abundant biowaste cotton stalk. These materials possess a surface area of 3463.14 m² g^-1 and hierarchical pores. As lithium-ion battery (LIB) anodes, the samples exhibit 1100 mAh g^-1 at 0.1 A g^-1 after 100 cycles and hold 419 mAh g^-1 at 1 A g^-1 after 1000 cycles, with nearly 100% capacity retention. After HPCSCMs are loaded with sulfur (S/HPCSCMs), the samples (S/HPCSCMs-2) deliver a discharge capacity of 413 mAh g^-1 at 0.1 A g^-1 after 100 cycles as lithium-sulfur (Li-S) battery cathodes. This excellent electrochemical performance can be attributed to P in carbon networks, which not only provides more active sites, but also improves electrical conductivity.