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Title: One-pot solvothermal synthesis of ZnFe{sub 2}O{sub 4} nanospheres/graphene composites with improved lithium-storage performance

Abstract

Highlights: • A one-pot solvothermal route is developed for synthesizing ZnFe{sub 2}O{sub 4}/graphene nanocomposites. • ZnFe{sub 2}O{sub 4} nanospheres with a size of about 100–200 nm are uniformly dispersed on graphene nanosheets. • The nanocomposite delivers a reversible capacity of 704 mAh/g after 50 cycles. • The improved lithium-storage performance is ascribed to the confining and conducting effects of graphene nanosheets. - Abstract: We report a facile one-pot solvothermal route for synthesizing ZnFe{sub 2}O{sub 4}/graphene nanocomposites. XRD, SEM and TEM results demonstrate that ZnFe{sub 2}O{sub 4} nanospheres with a size of about 100–200 nm are uniformly dispersed on graphene nanosheets. Each ZnFe{sub 2}O{sub 4} nanosphere is assembled by many nanoparticles around 10 nm. When evaluated as anode for Li-ion batteries, ZnFe{sub 2}O{sub 4}/graphene nanocomposites deliver a first discharge capacity of 1400 mAh g{sup −1} and remain a reversible capacity up to 704.2 mAh g{sup −1} after 50 cycles. ZnFe{sub 2}O{sub 4}/graphene nanocomposites also exhibit ameliorative rate capacity of 271.8 mAh g{sup −1} at the current of 800 mA g{sup −1}, which can recover to 814 mAh g{sup −1} when the current density is reduced back to 100 mA g{sup −1}. The enhanced electrochemical performances of the nanocomposites are ascribed tomore » the confining and conducting effects of graphene and the synergistic effects between the conductive graphene and ZnFe{sub 2}O{sub 4} nanospheres.« less

Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
22475770
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 65; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CURRENT DENSITY; ELECTRIC BATTERIES; ELECTROCHEMISTRY; ENERGY STORAGE; FERRITES; GRAPHENE; LITHIUM IONS; NANOCOMPOSITES; NANOPARTICLES; NANOSTRUCTURES; PERFORMANCE; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZINC COMPOUNDS

Citation Formats

Shi, Jingjing, Zhou, Xiaoyan, Liu, Ya, Su, Qingmei, Zhang, Jun, and Du, Gaohui, E-mail: gaohuidu@zjnu.edu.cn. One-pot solvothermal synthesis of ZnFe{sub 2}O{sub 4} nanospheres/graphene composites with improved lithium-storage performance. United States: N. p., 2015. Web. doi:10.1016/J.MATERRESBULL.2015.01.057.
Shi, Jingjing, Zhou, Xiaoyan, Liu, Ya, Su, Qingmei, Zhang, Jun, & Du, Gaohui, E-mail: gaohuidu@zjnu.edu.cn. One-pot solvothermal synthesis of ZnFe{sub 2}O{sub 4} nanospheres/graphene composites with improved lithium-storage performance. United States. doi:10.1016/J.MATERRESBULL.2015.01.057.
Shi, Jingjing, Zhou, Xiaoyan, Liu, Ya, Su, Qingmei, Zhang, Jun, and Du, Gaohui, E-mail: gaohuidu@zjnu.edu.cn. Fri . "One-pot solvothermal synthesis of ZnFe{sub 2}O{sub 4} nanospheres/graphene composites with improved lithium-storage performance". United States. doi:10.1016/J.MATERRESBULL.2015.01.057.
@article{osti_22475770,
title = {One-pot solvothermal synthesis of ZnFe{sub 2}O{sub 4} nanospheres/graphene composites with improved lithium-storage performance},
author = {Shi, Jingjing and Zhou, Xiaoyan and Liu, Ya and Su, Qingmei and Zhang, Jun and Du, Gaohui, E-mail: gaohuidu@zjnu.edu.cn},
abstractNote = {Highlights: • A one-pot solvothermal route is developed for synthesizing ZnFe{sub 2}O{sub 4}/graphene nanocomposites. • ZnFe{sub 2}O{sub 4} nanospheres with a size of about 100–200 nm are uniformly dispersed on graphene nanosheets. • The nanocomposite delivers a reversible capacity of 704 mAh/g after 50 cycles. • The improved lithium-storage performance is ascribed to the confining and conducting effects of graphene nanosheets. - Abstract: We report a facile one-pot solvothermal route for synthesizing ZnFe{sub 2}O{sub 4}/graphene nanocomposites. XRD, SEM and TEM results demonstrate that ZnFe{sub 2}O{sub 4} nanospheres with a size of about 100–200 nm are uniformly dispersed on graphene nanosheets. Each ZnFe{sub 2}O{sub 4} nanosphere is assembled by many nanoparticles around 10 nm. When evaluated as anode for Li-ion batteries, ZnFe{sub 2}O{sub 4}/graphene nanocomposites deliver a first discharge capacity of 1400 mAh g{sup −1} and remain a reversible capacity up to 704.2 mAh g{sup −1} after 50 cycles. ZnFe{sub 2}O{sub 4}/graphene nanocomposites also exhibit ameliorative rate capacity of 271.8 mAh g{sup −1} at the current of 800 mA g{sup −1}, which can recover to 814 mAh g{sup −1} when the current density is reduced back to 100 mA g{sup −1}. The enhanced electrochemical performances of the nanocomposites are ascribed to the confining and conducting effects of graphene and the synergistic effects between the conductive graphene and ZnFe{sub 2}O{sub 4} nanospheres.},
doi = {10.1016/J.MATERRESBULL.2015.01.057},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 65,
place = {United States},
year = {2015},
month = {5}
}