Spider-web-inspired cellulose nanofibrils networking polyaniline-encapsulated silica nanoparticles as anode material of lithium-ion batteries

Kaisheng Luo; Kaili Wu; Qingxi Hou; Wenwen Zhang; Tongbao Jiang; Xiaodi Wang; Xiuzhi Liu; Wei Liu

doi:10.1016/j.carbpol.2021.118833

Spider-web-inspired cellulose nanofibrils networking polyaniline-encapsulated silica nanoparticles as anode material of lithium-ion batteries

Carbohydr Polym. 2022 Feb 1:277:118833. doi: 10.1016/j.carbpol.2021.118833. Epub 2021 Oct 30.

Authors

Kaisheng Luo¹, Kaili Wu¹, Qingxi Hou², Wenwen Zhang¹, Tongbao Jiang¹, Xiaodi Wang¹, Xiuzhi Liu¹, Wei Liu³

Affiliations

¹ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, Tianjin 300457, China.
² Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, Tianjin 300457, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: qingxihou@tust.edu.cn.
³ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, Tianjin 300457, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China. Electronic address: wei.liu2009@hotmail.com.

PMID: 34893250
DOI: 10.1016/j.carbpol.2021.118833

Abstract

As the promising anode material of lithium-ion batteries (LIBs), SiO₂ has high theoretical capacity, but the volume expansion severely hinders its application. To address the challenge, inspired by the highly flexible spider-web architecture, the SiO₂@carbonized polyaniline/carbonized 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (SiO₂@cPANI/cTOCNFs) composite was designed, and fabricated via carbonizing the freeze-dried SiO₂@PANI/TOCNFs. The resultant SiO₂@cPANI/cTOCNFs composite exhibited unique spider-web-like nanostructures, providing a double-layer carbon network to protect SiO₂ anode material. The results showed that, the SiO₂@cPANI/cTOCNFs composite as anode material of LIBs offered a reversible capacity of 1103 mAh g^-1 at a current density of 0.1 A g^-1 after 200 cycles, and gave a capacity of 302 mAh g^-1 after 1000 cycles at a current density of 1 A g^-1, exhibiting excellent cycling stability. This study provides a strategy of spider-web-inspired cellulose nanofibrils networking polyaniline-encapsulated silica nanoparticles as anode material of LIBs.

Keywords: Anode; Double‑carbon protection; Lithium-ion batteries; SiO(2); Spider-web; TEMPO-oxidized cellulose nanofibrils.