Work

C60 Fullerene-Reinforced Silicon Oxycarbide Composite Fiber Mats: Performance as Li-Ion Battery Electrodes

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Precursor-derived silicon oxycarbide (SiOC) has emerged as a potential high-capacity anode material for rechargeable Li-ion batteries. The polymer processing and pyrolysis route, a hallmark of polymer-derived ceramics, allows chemical interfacing with a variety of nanoprecursors and nanofiller phases to produce composites with low-dimensional structures such as fibers and coatings not readily attained in traditional sintered ceramics. Here, buckminsterfullerene or C 60 was introduced as a filler phase in a hybrid precursor of 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl-cyclotetrasiloxane (TTCS) along with polyvinylpyrrolidone or PVP as a spinning agent to fabricate electrospun fiber mats, which upon a high-heat treatment transformed to a C 60 -reinforced SiOC ceramic composite. Tested as the self-supporting working electrode in a Li-ion half-cell, C 60 -reinforced fiber mats show a much-improved reversible capacity (825 mA h g –1 ), nearly 100% Coulombic efficiency, and superior rate capability with low-capacity decay at high currents (only 25.5% decay at 800 mA g –1 ) compared to neat C 60 and neat carbonized fiber electrodes.

Source: ACS Omega

DOI: 10.1021/acsomega.4c04224

Authors: Arijit Roy, Shakir Bin Mujib, Gurpreet Singh

Institution: Kansas State University

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,935