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Silicon/Mesoporous Carbon/Crystalline TiO2 Nanoparticles for Highly Stable Lithium Storage.
ACS Nano. 2016 11 22; 10(11):10524-10532.AN

Abstract

A core-shell-shell heterostructure of Si nanoparticles as the core with mesoporous carbon and crystalline TiO2 as the double shells (Si@C@TiO2) is utilized as an anode material for lithium-ion batteries, which could successfully tackle the vital setbacks of Si anode materials, in terms of intrinsic low conductivity, unstable solid-electrolyte interphase (SEI) films, and serious volume variations. Combined with the high theoretical capacity of the Si core (4200 mA h g-1), the double shells can perfectly avoid direct contact of Si with electrolyte, leading to stable SEI films and enhanced Coulombic efficiency. On the other hand, the carbon inner shell is effective at improving the overall conductivity of the Si-based electrode; the TiO2 outer shell is expected to serve as a rigid layer to achieve high structural stability and integrity of the core-shell-shell structure. As a result, the elaborate Si@C@TiO2 core-shell-shell nanoparticles are proven to show excellent Li storage properties. It delivers high reversible capacity of 1726 mA h g-1 over 100 cycles, with outstanding cyclability of 1010 mA h g-1 even after 710 cycles.

Authors+Show Affiliations

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University , Shanghai 201620, People's Republic of China.Institute for Superconducting & Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University , Shanghai 201620, People's Republic of China.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University , Shanghai 201620, People's Republic of China.Institute for Superconducting & Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia.Institute for Superconducting & Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia.Institute for Superconducting & Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University , Shanghai 201620, People's Republic of China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

27786460

Citation

Luo, Wei, et al. "Silicon/Mesoporous Carbon/Crystalline TiO2 Nanoparticles for Highly Stable Lithium Storage." ACS Nano, vol. 10, no. 11, 2016, pp. 10524-10532.
Luo W, Wang Y, Wang L, et al. Silicon/Mesoporous Carbon/Crystalline TiO2 Nanoparticles for Highly Stable Lithium Storage. ACS Nano. 2016;10(11):10524-10532.
Luo, W., Wang, Y., Wang, L., Jiang, W., Chou, S. L., Dou, S. X., Liu, H. K., & Yang, J. (2016). Silicon/Mesoporous Carbon/Crystalline TiO2 Nanoparticles for Highly Stable Lithium Storage. ACS Nano, 10(11), 10524-10532.
Luo W, et al. Silicon/Mesoporous Carbon/Crystalline TiO2 Nanoparticles for Highly Stable Lithium Storage. ACS Nano. 2016 11 22;10(11):10524-10532. PubMed PMID: 27786460.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Silicon/Mesoporous Carbon/Crystalline TiO2 Nanoparticles for Highly Stable Lithium Storage. AU - Luo,Wei, AU - Wang,Yunxiao, AU - Wang,Lianjun, AU - Jiang,Wan, AU - Chou,Shu-Lei, AU - Dou,Shi Xue, AU - Liu,Hua Kun, AU - Yang,Jianping, Y1 - 2016/10/27/ PY - 2016/10/28/pubmed PY - 2016/10/28/medline PY - 2016/10/28/entrez KW - coating KW - core−shell nanostructure KW - lithium-ion battery KW - silicon anode KW - sol−gel process SP - 10524 EP - 10532 JF - ACS nano JO - ACS Nano VL - 10 IS - 11 N2 - A core-shell-shell heterostructure of Si nanoparticles as the core with mesoporous carbon and crystalline TiO2 as the double shells (Si@C@TiO2) is utilized as an anode material for lithium-ion batteries, which could successfully tackle the vital setbacks of Si anode materials, in terms of intrinsic low conductivity, unstable solid-electrolyte interphase (SEI) films, and serious volume variations. Combined with the high theoretical capacity of the Si core (4200 mA h g-1), the double shells can perfectly avoid direct contact of Si with electrolyte, leading to stable SEI films and enhanced Coulombic efficiency. On the other hand, the carbon inner shell is effective at improving the overall conductivity of the Si-based electrode; the TiO2 outer shell is expected to serve as a rigid layer to achieve high structural stability and integrity of the core-shell-shell structure. As a result, the elaborate Si@C@TiO2 core-shell-shell nanoparticles are proven to show excellent Li storage properties. It delivers high reversible capacity of 1726 mA h g-1 over 100 cycles, with outstanding cyclability of 1010 mA h g-1 even after 710 cycles. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/27786460/Silicon/Mesoporous_Carbon/Crystalline_TiO2_Nanoparticles_for_Highly_Stable_Lithium_Storage_ L2 - https://dx.doi.org/10.1021/acsnano.6b06517 DB - PRIME DP - Unbound Medicine ER -
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