Hierarchical structure of in-situ Fe2O3 nanoparticles decorated on crumpled Ti3C2Tx nanosheets with enhanced cycle performance as anode for lithium ion battery. Issue 15 (1st August 2021)

• Record Type: Journal Article
• Authors: Yao, Jie; Jiang, Wei; Pan, Limei; Xiong, Jie; Wang, Tiancheng; Qiu, Tai; Yang, Jian
• Is Part Of: Ceramics international. Volume 47:Issue 15(2021)
• Page Start: 21807
• Page End: 21814
• Publication Date: 2021-08-01
• Subjects: Ti3C2Tx -- Fe2O3 -- In-situ nucleation -- Anode; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.04.197
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This paper presents a simple wet-chemical method for preparing hierarchical Fe2 O3 @Ti3 C2 Tx nanocomposites with 50–70 wt% Fe2 O3 based on hydrothermal synthesis followed by freeze-drying. In this method, positively charged Fe2 O3 nanoparticles homogeneously nucleate in-situ, grow, and are electrostatically anchored on the surface of negatively charged and crumpled Ti3 C2 Tx nanosheets. The synergy between the Fe2 O3 and Ti3 C2 Tx inhibits the agglomeration and grain growth of the Fe2 O3 nanoparticles, prevents the restacking and oxidation of the Ti3 C2 Tx nanosheets, and provides abundant voids, thus significantly improving the charge transport kinetics of the composite and absorbing the expansion of the Fe2 O3 nanoparticles. In this study, a 60 wt% Fe2 O3 @Ti3 C2 Tx composite showed excellent electrochemical performance as an anode for a lithium ion battery, with a capacity of 701.86 mAh g -1 after 200 cycles at 0.2 A g -1 and a capacity of 609.9 mAh g -1 after 600 cycles at 0.5 A g -1 . The proposed strategy is scalable, universal applicable for constructing MXene-based hybrids, and can be potentially viable in fields such as energy storage, electromagnetic interference shielding, microwave absorbance, and catalysis.