Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries
As a potential anode material for lithium-ion batteries (LIBs), metal tin shows a high specific capacity. However, its inherent “volume effect” may easily turn tin-based electrode materials into powder and make them fall off in the cycle process, eventually leading to the reduction of the specific c...
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MDPI AG
2023-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/2/271 |
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| author | Guanhua Yang Yihong Li Xu Wang Zhiguo Zhang Jiayu Huang Jie Zhang Xinghua Liang Jian Su Linhui Ouyang Jianling Huang |
| author_facet | Guanhua Yang Yihong Li Xu Wang Zhiguo Zhang Jiayu Huang Jie Zhang Xinghua Liang Jian Su Linhui Ouyang Jianling Huang |
| author_sort | Guanhua Yang |
| collection | DOAJ |
| description | As a potential anode material for lithium-ion batteries (LIBs), metal tin shows a high specific capacity. However, its inherent “volume effect” may easily turn tin-based electrode materials into powder and make them fall off in the cycle process, eventually leading to the reduction of the specific capacity, rate and cycle performance of the batteries. Considering the “volume effect” of tin, this study proposes to construct a carbon coating and three-dimensional graphene network to obtain a “double confinement” of metal tin, so as to improve the cycle and rate performance of the composite. This excellent construction can stabilize the tin and prevent its agglomeration during heat treatment and its pulverization during cycling, improving the electrochemical properties of tin-based composites. When the optimized composite material of C@Sn/NSGr-7.5 was used as an anode material in LIB, it maintained a specific capacity of about 667 mAh g<sup>−1</sup> after 150 cycles at the current density of 0.1 A g<sup>−1</sup> and exhibited a good cycle performance. It also displayed a good rate performance with a capability of 663 mAh g<sup>−1</sup>, 516 mAh g<sup>−1</sup>, 389 mAh g<sup>−1</sup>, 290 mAh g<sup>−1</sup>, 209 mAh g<sup>−1</sup> and 141 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>, 0.2 A g<sup>−1</sup>, 0.5 A g<sup>−1</sup>, 1 A g<sup>−1</sup>, 2 A g<sup>−1</sup> and 5 A g<sup>−1</sup>, respectively. Furthermore, it delivered certain capacitance characteristics, which could improve the specific capacity of the battery. The above results showed that this is an effective method to obtain high-performance tin-based anode materials, which is of great significance for the development of new anode materials for LIBs. |
| first_indexed | 2024-03-09T11:33:26Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T11:33:26Z |
| publishDate | 2023-01-01 |
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| series | Nanomaterials |
| spelling | doaj.art-4fff43c1c0784e7fb91d3a772463748c2023-11-30T23:47:31ZengMDPI AGNanomaterials2079-49912023-01-0113227110.3390/nano13020271Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion BatteriesGuanhua Yang0Yihong Li1Xu Wang2Zhiguo Zhang3Jiayu Huang4Jie Zhang5Xinghua Liang6Jian Su7Linhui Ouyang8Jianling Huang9Guangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou 545006, ChinaAs a potential anode material for lithium-ion batteries (LIBs), metal tin shows a high specific capacity. However, its inherent “volume effect” may easily turn tin-based electrode materials into powder and make them fall off in the cycle process, eventually leading to the reduction of the specific capacity, rate and cycle performance of the batteries. Considering the “volume effect” of tin, this study proposes to construct a carbon coating and three-dimensional graphene network to obtain a “double confinement” of metal tin, so as to improve the cycle and rate performance of the composite. This excellent construction can stabilize the tin and prevent its agglomeration during heat treatment and its pulverization during cycling, improving the electrochemical properties of tin-based composites. When the optimized composite material of C@Sn/NSGr-7.5 was used as an anode material in LIB, it maintained a specific capacity of about 667 mAh g<sup>−1</sup> after 150 cycles at the current density of 0.1 A g<sup>−1</sup> and exhibited a good cycle performance. It also displayed a good rate performance with a capability of 663 mAh g<sup>−1</sup>, 516 mAh g<sup>−1</sup>, 389 mAh g<sup>−1</sup>, 290 mAh g<sup>−1</sup>, 209 mAh g<sup>−1</sup> and 141 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>, 0.2 A g<sup>−1</sup>, 0.5 A g<sup>−1</sup>, 1 A g<sup>−1</sup>, 2 A g<sup>−1</sup> and 5 A g<sup>−1</sup>, respectively. Furthermore, it delivered certain capacitance characteristics, which could improve the specific capacity of the battery. The above results showed that this is an effective method to obtain high-performance tin-based anode materials, which is of great significance for the development of new anode materials for LIBs.https://www.mdpi.com/2079-4991/13/2/271Sn-based materialgrapheneheteroatomic dopingcarbon coatinglithium ion battery |
| spellingShingle | Guanhua Yang Yihong Li Xu Wang Zhiguo Zhang Jiayu Huang Jie Zhang Xinghua Liang Jian Su Linhui Ouyang Jianling Huang Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries Nanomaterials Sn-based material graphene heteroatomic doping carbon coating lithium ion battery |
| title | Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries |
| title_full | Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries |
| title_fullStr | Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries |
| title_full_unstemmed | Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries |
| title_short | Rational Construction of C@Sn/NSGr Composites as Enhanced Performance Anodes for Lithium Ion Batteries |
| title_sort | rational construction of c sn nsgr composites as enhanced performance anodes for lithium ion batteries |
| topic | Sn-based material graphene heteroatomic doping carbon coating lithium ion battery |
| url | https://www.mdpi.com/2079-4991/13/2/271 |
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