Microwave sintering rapid synthesis of nano/micron β-sic from waste lithium battery graphite and photovoltaic silicon to achieve carbon reduction

Min Zhao, Qin Chen, Michael Johnson, Abhishek Kumar Awasthi, Qing Huang, Weihua Gu, Chenglong Zhang, Jianfeng Bai, Zhen Tian, Ruyan Li, Jingwei Wang

Research output: Contribution to journalArticlepeer-review

Abstract

The paper describes one promising method and approach for the recycling, reuse, and co-resource treatment of waste photovoltaic silicon and lithium battery anode graphite. Specifically, this work considers the preparation of nano/micron silicon carbide (SiC) from waste resources. Using activated carbon as a microwave susceptor over a very short timeframe, this research paper shows that nano/micron β-SiC can be successfully synthesized using microwave sintering technology. The used sintering temperature is significantly faster and more energy-efficient than traditional processes. The research results show that the β-SiC particle growth morphology greatly affected by the microwave sintering time. In a short microwave sintering time, the morphology of the β-SiC product is in the form of nano/micron clusters. The clusters tended to be regenerated into β-SiC nanorods after appropriately extending the microwave sintering time. In the context of heat conversion and resource saving, the comprehensive CO2 emission reduction is significantly higher than that of the traditional SiC production method.

Original languageEnglish
Article number11846
JournalSustainability (Switzerland)
Volume13
Issue number21
DOIs
Publication statusPublished - 1 Nov 2021

Keywords

  • Carbon emission reduction
  • Graphite
  • Microwave
  • Photovoltaic silicon
  • SiC
  • Waste lithium-ion battery

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