Free-standing SnS/carbonized cellulose film as durable anode for lithium-ion batteries

Fanshu Yuan; Yang Huang; Jieshu Qian; Muhammad M Rahman; Pulickel M Ajayan; Dongping Sun

doi:10.1016/j.carbpol.2020.117400

Free-standing SnS/carbonized cellulose film as durable anode for lithium-ion batteries

Carbohydr Polym. 2021 Mar 1:255:117400. doi: 10.1016/j.carbpol.2020.117400. Epub 2020 Nov 16.

Authors

Fanshu Yuan¹, Yang Huang², Jieshu Qian³, Muhammad M Rahman⁴, Pulickel M Ajayan⁵, Dongping Sun⁶

Affiliations

¹ Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Department of Materials Science and NanoEngineering, Rice University, TX 77030, USA.
² Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, Nanjing, 210037, China.
³ Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. Electronic address: qianjieshu@foxmail.com.
⁴ Department of Materials Science and NanoEngineering, Rice University, TX 77030, USA. Electronic address: mr64@rice.edu.
⁵ Department of Materials Science and NanoEngineering, Rice University, TX 77030, USA. Electronic address: ajayan@rice.edu.
⁶ Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. Electronic address: sundpe301@163.com.

PMID: 33436227
DOI: 10.1016/j.carbpol.2020.117400

Abstract

Metal sulfides have recently attracted broad attention for lithium-ion batteries (LIB) owing to their high theoretical capacity and long lifetime. However, the inferior structural integrity and low electron conductivity of metal sulfides limit their practical applications. A feasible strategy is to distribute these materials in conductive carbonaceous substrates with shapeable morphology. Here we report the design of free-standing films of tin sulfide (SnS) nanosheets distributed uniformly on carbonized bacterial cellulose (CBC) nanofibers. The SnS/CBC composites possess three dimensional interconnected nanostructures, which is crucial for the high conductivity and high lithium storage capacity. LIB using SnS/CBC as anode exhibits a reversible capacity of 872 mA h g^-1 at 100 mA g^-1 after 100 cycles, and the capacity remains as high as 527 mA h g^-1 at 2000 mA g^-1 after 1000 cycles. The free-standing sulfide-based nanocomposites with unique nanostructure composition and flexibility could be utilized as promising electrode materials for future LIB systems.

Keywords: Carbonized bacterial cellulose; Free-standing anodes; Li-ion batteries; Nanofibers; Three-dimensional structure; Tin (II) sulfide.