Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure

doi:10.3390/nano11051122

	Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure
	Wang, Zhenyan 1; Zhu, He 1; Ai, Li 1; Ding, Jimin 1; Zhu, Pengfei 1; Li, Ziqing 1; Li, Bo 1; Jiang, Hechun 1; Yu, Fapeng 1; Duan, Xiulan 1; Jiang, Huaidong1,2
	2021-05
发表期刊	NANOMATERIALS
EISSN	2079-4991
卷号	11 期号:5
DOI	10.3390/nano11051122
摘要	Mg2MnO4 nanoparticles with cubic spinel structure were synthesized by the sol-gel method using polyvinyl alcohol (PVA) as a chelating agent. X-ray powder diffraction, infrared spectrum (IR), scanning electron microscope (SEM), and transmission electron microscope (TEM) were used to characterize the crystalline phase and particle size of as-synthesized nanoparticles. The electronic structure of Mg2MnO4 spinel was studied by X-ray photoelectron spectroscopy (XPS). The results showed that pure cubic Mg2MnO4 spinel nanoparticles were obtained when the annealing temperature was 500-700 degrees C. The samples had a porous-spongy structure assembled by nanoparticles. XPS studies indicated that Mg2MnO4 nanoparticles were mixed spinel structures and the degree of cation inversion decreased with increasing annealing temperature. Furthermore, the performance of Mg2MnO4 as lithium anode material was studied. The results showed that Mg2MnO4 samples had good cycle stability except for the slight decay in the capacity at 50 cycles. The coulombic efficiency (ratio of discharge and charge capacity) in most cycles was near 100%. The sample annealed at 600 degrees C exhibited good electrochemical properties, the first discharge capacity was 771.5 mAh/g, and the capacity remained 340 mAh/g after 100 cycles. The effect of calcination temperature on the charge-discharge performance of the samples was studied and discussed.
关键词	cubic spinel Mg2MnO4 inversion degree Li-ion batteries anode materials
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收录类别	SCIE
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000657047100001
出版者	MDPI
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/126949
专题	大科学中心_PI研究组_江怀东组物质科学与技术学院大科学中心
通讯作者	Duan, Xiulan
作者单位	1.Shandong Univ, Inst Crystal Mat, State Key Lab Crystal Mat, Jinan 250100, Peoples R China; 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhenyan,Zhu, He,Ai, Li,et al. Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure[J]. NANOMATERIALS,2021,11(5).
APA	Wang, Zhenyan.,Zhu, He.,Ai, Li.,Ding, Jimin.,Zhu, Pengfei.,...&Jiang, Huaidong.(2021).Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure.NANOMATERIALS,11(5).
MLA	Wang, Zhenyan,et al."Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure".NANOMATERIALS 11.5(2021).