Green synthesis of graphite from CO2 without graphitization process of amorphous carbon

Chu Liang, Yun Chen, Min Wu, Kai Wang, Wenkui Zhang (), Yongping Gan, Hui Huang, Jian Chen, Yang Xia, Jun Zhang, Shiyou Zheng () and Hongge Pan ()
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Chu Liang: Zhejiang University of Technology
Yun Chen: Zhejiang University of Technology
Min Wu: Zhejiang University of Technology
Kai Wang: Zhejiang University of Technology
Wenkui Zhang: Zhejiang University of Technology
Yongping Gan: Zhejiang University of Technology
Hui Huang: Zhejiang University of Technology
Jian Chen: Xi’an Technological University
Yang Xia: Zhejiang University of Technology
Jun Zhang: Zhejiang University of Technology
Shiyou Zheng: University of Shanghai for Science and Technology
Hongge Pan: Zhejiang University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Environmentally benign synthesis of graphite at low temperatures is a great challenge in the absence of transition metal catalysts. Herein, we report a green and efficient approach of synthesizing graphite from carbon dioxide at ultralow temperatures in the absence of transition metal catalysts. Carbon dioxide is converted into graphite submicroflakes in the seconds timescale via reacting with lithium aluminum hydride as the mixture of carbon dioxide and lithium aluminum hydride is heated to as low as 126 °C. Gas pressure-dependent kinetic barriers for synthesizing graphite is demonstrated to be the major reason for our synthesis of graphite without the graphitization process of amorphous carbon. When serving as lithium storage materials, graphite submicroflakes exhibit excellent rate capability and cycling performance with a reversible capacity of ~320 mAh g–1 after 1500 cycles at 1.0 A g–1. This study provides an avenue to synthesize graphite from greenhouse gases at low temperatures.

Date: 2021
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DOI: 10.1038/s41467-020-20380-0

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