α-Fe2O3@C/MXene composites with core-shell structures applied as electrodes for pseudo-supercapacitors

被引：12

作者：

Zhang, Xin ^{[1
]}

Liu, Haixiong ^{[1
]}

Lu, Xinyu ^{[1
]}

Xu, Rui ^{[1
]}

Niu, Yongan ^{[2
]}

机构：

[1] Shenyang Univ Chem Technol, Sch Chem Engn, Shenyang 110142, Peoples R China

[2] Shenyang Univ Chem Technol, Sch Mat Sci & Engn, Shenyang 110142, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 983卷

基金：

中国国家自然科学基金;

关键词：

MXene; Core-shell Structures; Hydrothermal; Specific capacitance; PERFORMANCE; CARBON; NANOPARTICLES; ANODE;

D O I：

10.1016/j.jallcom.2024.173522

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

alpha-Fe2O3@C/MXene composites were successfully synthesized by a two-step hydrothermal method, and the composition and structure were investigated by XRD, SEM, TEM, and XPS instruments. Then, the electrochemical behaviors under different scanning rates were gradually measured. The mass specific capacitance of the alpha-Fe2O3@C/MXene composite with MXene usage of 0.4 mg/mL is about 40.85 F/g at the scanning rate of 10 mV/ s. The change rate of mass specific capacitance is only 84.98 %. And the BET surface area is about 28.4 m2/mg. The MXene loading on alpha-Fe2O3@C electrodes may effectively alleviate the changes of the mass ratio and the capacitance at a higher scanning rate. Finally, the pseudo-capacitance contribution of alpha-Fe2O3@C/MXene composites was quantitatively evaluated by the dynamic analysis at different scanning rates.

引用

页数：11

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