Graphite Equivalent Evaluation of Anthracite-Associated Graphite by Raman Spectroscopy

Wubo Chu; Wen Dai; Bo Wang; Chen Ye; Weiping Xie; Bing Yin; He Li; Nan Jiang

doi:10.3390/ma16237278

Graphite Equivalent Evaluation of Anthracite-Associated Graphite by Raman Spectroscopy

Materials (Basel). 2023 Nov 22;16(23):7278. doi: 10.3390/ma16237278.

Authors

Wubo Chu^{1

2}, Wen Dai¹, Bo Wang^{1

3}, Chen Ye¹, Weiping Xie¹, Bing Yin⁴, He Li^{1

2}, Nan Jiang¹

Affiliations

¹ Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
³ Chair of Functional Materials, Department of Materials Science & Engineering, Saarland University, 66123 Saarbrücken, Germany.
⁴ Dalian Customs, Dalian 116001, China.

Abstract

Anthracite-associated graphite is an important graphite resource with a wide range of applications besides being used as a fuel. This paper introduces a method for evaluating the graphite equivalent evaluation of anthracite-associated graphite. A series of graphite-anthracite standard samples with known graphite content were prepared, and their Raman spectra were obtained using a Raman spectrometer. By employing peak-fitting analysis to decipher the peak spectrum information of the D peak and G peak, trends in the peak position, peak intensity ratio, half-width, and peak area of the D peak and G peak in standard samples with different graphite contents were obtained. Subsequently, a standard curve and fitting equation were established using the peak area data. The goodness of fit for the equation (R²) was 0.9984. Then the equation was used to evaluate 100 natural anthracite-associated graphite samples with unknown graphite content, obtaining a corresponding graphite equivalent evaluation.

Keywords: Raman; anthracite-associated graphite; graphite equivalent evaluation.

Grants and funding

This research was funded by the Project of the Science and Technology Innovation 2025 Major Projects, Ningbo, China (2022Z054), the Science and Technology Major Project of Ningbo (20211ZDYF020196) and the National Natural Science Foundation of China (51573201).