Interface-Induced Self-Assembly Strategy Toward 2D Ordered Mesoporous Carbon/MXene Heterostructures for High-Performance Supercapacitors

Zhilin Liu; Hailong Xiong; Yaxiao Luo; Liangliang Zhang; Kuo Hu; Ling Zhang; Yu Gao; Zhen-An Qiao

doi:10.1002/cssc.202101374

Interface-Induced Self-Assembly Strategy Toward 2D Ordered Mesoporous Carbon/MXene Heterostructures for High-Performance Supercapacitors

ChemSusChem. 2021 Oct 20;14(20):4422-4430. doi: 10.1002/cssc.202101374. Epub 2021 Aug 31.

Authors

Zhilin Liu¹, Hailong Xiong^{1

2}, Yaxiao Luo³, Liangliang Zhang¹, Kuo Hu³, Ling Zhang⁴, Yu Gao⁵, Zhen-An Qiao¹

Affiliations

¹ State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China.
² Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovative Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science and, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.
³ State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, Jilin, 130012, P. R. China.
⁴ State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China.
⁵ Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, Jilin University, Changchun, Jilin, 130012, P. R. China.

PMID: 34350723
DOI: 10.1002/cssc.202101374

Abstract

Two-dimensional transition metal carbonitrides (MXene) have demonstrated great potential in many fields. However, the serious aggregation and poor thermodynamic stability of MXene greatly hinder their applications. Here, an interface-induced self-assembly strategy to synthesize ordered mesoporous carbon/Ti₃ C₂ T_x heterostructures (OMCTs) was developed. In this method, the composite monomicelles formed by Pluronic F127 and low-molecular-weight phenolic resol self-assembled on the surface of Ti₃ C₂ T_x to prevent the restacking of Ti₃ C₂ T_x and maintain its thermostability. The obtained OMCTs possessed high specific surface areas (259-544 m² g^-1 ), large pore volumes (0.296-0.481 cm³ g^-1 ), and excellent thermodynamic stability (up to 600 °C). Benefiting from these advantages, OMCTs serving as the electrode materials for supercapacitor exhibited superior supercapacitor performances, including high capacitance of 247 F g^-1 at 0.2 A g^-1 , satisfactory rate performance of 190 F g^-1 at 5 A g^-1 , and cyclability.

Keywords: MXene; heterostructures; interface-induced self-assembly; ordered mesoporous carbon; supercapacitors.

Abstract

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