journal article·2016-06-08Open access

Silicon Oxycarbide/Carbon Nanohybrids with Tiny Silicon Oxycarbide Particles Embedded in Free Carbon Matrix Based on Photoactive Dental Methacrylates

Meimei Wang, Yonggao Xia, Xiaoyan Wang, Ying Xiao, Rui Liu, Qiang Wu, Bao Qiu, Ezzeldin Metwalli, Senlin Xia, Yuan Yao, Guoxin Chen, Yan Liu, Zhaoping Liu, Jian-Qiang Meng, Zhaohui Yang, Ling-Dong Sun, Chun-Hua Yan, Peter Müller-Buschbaum, Jing Pan, Ya-Jun Cheng

Abstract

A new facile scalable method has been developed to synthesize silicon oxycarbide (SiOC)/carbon nanohybrids using difunctional dental methacrylate monomers as solvent and carbon source and the silane coupling agent as the precursor for SiOC. The content (from 100% to 40% by mass) and structure (ratio of disordered carbon over ordered carbon) of the free carbon matrix have been systematically tuned by varying the mass ratio of methacryloxypropyltrimethoxysilane (MPTMS) over the total mass of the resin monomers from 0.0 to 6.0. Compared to the bare carbon anode, the introduction of MPTMS significantly improves the electrochemical performance as a lithium-ion battery anode. The initial and cycled discharge/charge capacities of the SiOC/C nanohybrid anodes reach maximum with the MPTMS ratio of 0.50, which displays very good rate performance as well. Detailed structures and electrochemical performance as lithium-ion battery anodes have been systematically investigated. The structure-property correlation and corresponding mechanism have been discussed.
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Research context

OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Diamond and Carbon-based Materials Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Zhenhai District, Ningbo, Zhejiang Province 315201, People’s Republic of China

Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang Province 315211, People’s Republic of China

State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, People’s Republic of China

Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China

Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, People’s Republic of China

Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany

Funding

European Commission · China Scholarship Council · National Natural Science Foundation of China · Chinese Academy of Sciences · Ningbo Key Laboratory of Polymer Materials · Zhejiang Province · Beijing National Laboratory for Molecular Sciences · Center for NanoScience, Ludwig-Maximilians-Universität München

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