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Title: Self-supported Zn/Si core-shell arrays as advanced electrodes for lithium ion batteries

Abstract

Graphical abstract: Zn/Si core-shell arrays prepared by combined hydrothermal plus sputtering method show good performance with high specific capacity and excellent cycling stability. - Highlights: • Construct Zn/Si core-shell arrays via sputtering. • The Zn/Si core-shell arrays show high capacity and good cycles. • Core-shell arrays is favorable for fast ion/electron transfer. - Abstract: Silicon is considered as the most promising substitute for the commercial graphite anode of lithium ion batteries (LIBs) due to its high capacity and low working voltage. In this work, we realize the rational combination between Zn nanorods and Si forming self-supported Zn/Si core-shell arrays with the aid of hydrothermal and sputtering methods. Amorphous Si layer is well coated on the backbone of Zn nanorods with diameters of 70–80 nm. As a preliminary test, the Zn/Si core-shell arrays are used as the anode of LIBs and demonstrated with a high initial reversible capacity of 2795 mAh g{sup −1} at 0.1C, good high-rate capability with 1985 mAh g{sup −1} at 1C and stable cycling life. The good performance is due to the highly conductive Zn nanorod network and porous core-shell structure providing good mechanical support and fast transport of ions/electrons.

Authors:
 [1]; ; ;  [1];  [2]
  1. Key Laboratory of Engineering Dielectric and Applications (Ministry of Education), Harbin University of Science and Technology, Harbin 150080 (China)
  2. State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)
Publication Date:
OSTI Identifier:
22730465
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 95; Other Information: Copyright (c) 2017 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; CAPACITORS; CAPACITY; ELECTRON TRANSFER; ENERGY CONVERSION; ENERGY STORAGE; LITHIUM ION BATTERIES; NANOSTRUCTURES; POROUS MATERIALS; SPUTTERING; THIN FILMS; ZINC

Citation Formats

Chen, Minghua, Qi, Meili, Yin, Jinghua, Chen, Qingguo, and Xia, Xinhui. Self-supported Zn/Si core-shell arrays as advanced electrodes for lithium ion batteries. United States: N. p., 2017. Web. doi:10.1016/J.MATERRESBULL.2017.08.024.
Chen, Minghua, Qi, Meili, Yin, Jinghua, Chen, Qingguo, & Xia, Xinhui. Self-supported Zn/Si core-shell arrays as advanced electrodes for lithium ion batteries. United States. doi:10.1016/J.MATERRESBULL.2017.08.024.
Chen, Minghua, Qi, Meili, Yin, Jinghua, Chen, Qingguo, and Xia, Xinhui. Wed . "Self-supported Zn/Si core-shell arrays as advanced electrodes for lithium ion batteries". United States. doi:10.1016/J.MATERRESBULL.2017.08.024.
@article{osti_22730465,
title = {Self-supported Zn/Si core-shell arrays as advanced electrodes for lithium ion batteries},
author = {Chen, Minghua and Qi, Meili and Yin, Jinghua and Chen, Qingguo and Xia, Xinhui},
abstractNote = {Graphical abstract: Zn/Si core-shell arrays prepared by combined hydrothermal plus sputtering method show good performance with high specific capacity and excellent cycling stability. - Highlights: • Construct Zn/Si core-shell arrays via sputtering. • The Zn/Si core-shell arrays show high capacity and good cycles. • Core-shell arrays is favorable for fast ion/electron transfer. - Abstract: Silicon is considered as the most promising substitute for the commercial graphite anode of lithium ion batteries (LIBs) due to its high capacity and low working voltage. In this work, we realize the rational combination between Zn nanorods and Si forming self-supported Zn/Si core-shell arrays with the aid of hydrothermal and sputtering methods. Amorphous Si layer is well coated on the backbone of Zn nanorods with diameters of 70–80 nm. As a preliminary test, the Zn/Si core-shell arrays are used as the anode of LIBs and demonstrated with a high initial reversible capacity of 2795 mAh g{sup −1} at 0.1C, good high-rate capability with 1985 mAh g{sup −1} at 1C and stable cycling life. The good performance is due to the highly conductive Zn nanorod network and porous core-shell structure providing good mechanical support and fast transport of ions/electrons.},
doi = {10.1016/J.MATERRESBULL.2017.08.024},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 95,
place = {United States},
year = {2017},
month = {11}
}