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Li et al. Chem Synth 2023;3:30 Chemical Synthesis
DOI: 10.20517/cs.2023.16

Research Article Open Access

Pore structure unveiling effect to boost lithium-

selenium batteries: selenium confined in
hierarchically porous carbon derived from aluminum

based MOFs

1,2
3,*
1,2
3
1,2
Hong-Yan Li 1,2,# , Chao Li 1,2,# , Ying-Ying Wang , Wen-Da Dong , Xi-Kun Zhang , Ming-Hui Sun , Yu Li ,
Bao-Lian Su 1,2,3,*
1
Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Namur B-5000, Belgium.
2
Namur Institute of Structured Matter (NISM), University of Namur, Namur B-5000, Belgium.
3
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology,
Wuhan 430074, Hubei, China.
#
These authors contributed equally.
*Correspondence to: Prof. Bao-Lian Su, Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de
Bruxelles 61, Namur 5000, Belgium. E-mail: bao-lian.su@unamur.be/baoliansu@whut.edu.cn; Prof. Yu Li, State Key Laboratory of
Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan
430074, Hubei, China. E-mail: yu.li@whut.edu.cn
How to cite this article: Li HY, Li C, Wang YY, Dong WD, Zhang XK, Sun MH, Li Y, Su BL. Pore structure unveiling effect to boost
lithium-selenium batteries: selenium confined in hierarchically porous carbon derived from aluminum based MOFs. Chem Synth
2023;3:30. https://dx.doi.org/10.20517/cs.2023.16
Received: 19 Mar 2023 First Decision: 07 Apr 2023 Revised: 10 May 2023 Accepted: 22 May 2023 Published: 9 Jun 2023
Academic Editors: Xiangdong Yao, Aicheng Chen Copy Editor: Dan Zhang Production Editor: Dan Zhang

Abstract
Lithium-selenium (Li-Se) batteries have attracted much attention in recent years because of their high volumetric
-3
capacity (3253 mA h cm ) compared to the current commercial Li-ion battery. The shuttle effect and large volume
variation during the electrochemical reactions limit its practical applications. The widely accepted strategy to
reduce these drawbacks is confining selenium (Se) in porous carbon materials. However, how to boost
electrochemical kinetics, reduce the shuttle effect and accommodate volume expansion for maximized battery
performance still remains highly challenging. Herein, we synthesized three kinds of hierarchically porous carbon
materials by facile pyrolysis of aluminum-based metal-organic frameworks (MOFs) with different porous
networks. The large surface area and high pore volume can ensure the excellent polyselenides adsorption while
tailoring the ratio between micropores and mesopores of the hierarchically porous hosts can highly enhance
electrolyte and electron transportation, leading to excellent electrochemical performance with a capacity as high as
-1
-1
530.1 mA h g (Se@MIL-68-800) after 200 cycles, an excellent rate capability of 307 mA h g at 5 C, and a high

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