Hierarchical porous carbons from polysaccharides carboxymethyl cellulose, bacterial cellulose, and citric acid for supercapacitor

Yu Shu; Qiuhong Bai; Guangxu Fu; Qiancheng Xiong; Cong Li; Huafeng Ding; Yehua Shen; Hiroshi Uyama

doi:10.1016/j.carbpol.2019.115346

Hierarchical porous carbons from polysaccharides carboxymethyl cellulose, bacterial cellulose, and citric acid for supercapacitor

Carbohydr Polym. 2020 Jan 1:227:115346. doi: 10.1016/j.carbpol.2019.115346. Epub 2019 Sep 21.

Authors

Yu Shu¹, Qiuhong Bai², Guangxu Fu², Qiancheng Xiong², Cong Li², Huafeng Ding², Yehua Shen³, Hiroshi Uyama⁴

Affiliations

¹ College of Food Science and Technology, Northwest University, Xi'an, Shaanxi 710069, China.
² Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, China.
³ Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, China. Electronic address: yhshen@nwu.edu.cn.
⁴ Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, China; Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan. Electronic address: uyama@chem.eng.osaka-u.ac.jp.

PMID: 31590873
DOI: 10.1016/j.carbpol.2019.115346

Abstract

This study reports excellent supercapacitor performance of hierarchical composite porous carbon (HPC) materials successfully fabricated by one-step carbonization and activation process derived from polysaccharides carboxymethyl cellulose, bacterial cellulose, and citric acid. The resultant HPC displayed unique porous nanosheet morphology with high specific surface area (2490 m² g^-1) and rich oxygen content (7.3%). The developed structures with macropores, mesopore walls, micropores, and high oxygen content led to excellent electrochemical performance for electrode of electric double-layer capacitors (EDLCs). In a three-electrode system, the HPC electrode showed a high specific capacitance of 350 F g^-1, good rate performance, and excellent cycling stability. The energy density of supercapacitor based on HPC was comparable to or higher than that of commercially supercapacitors. More importantly, two series-wound devices were easy to light light-emitting diode (LED, 3.0 V). These results suggest that the current material is a promising candidate for low-cost and eco-friendly energy storage devices.

Keywords: Bacterial cellulose; Carboxymethyl cellulose; Hierarchical porous carbon; Polysaccharides; Supercapacitor.

MeSH terms

Carbon / chemistry
Cellulose / chemistry*
Citric Acid / chemistry*
Electric Capacitance*
Electric Power Supplies
Electrodes
Polysaccharides, Bacterial / chemistry*
Porosity

Substances

Polysaccharides, Bacterial
Citric Acid
Carbon
Cellulose