Atomically Dispersed Sn Incorporated into Carbon Matrix for Stable Electrochemical Lithium Storage

Qiongguang Li; Menglei Yuan; Yongjun Ji; Xiao Chen; Yanhong Wang; Xingyue Gao; Huifang Li; Hongyan He; Han Chen; Qiangqiang Tan; Guangwen Xu; Ziyi Zhong; Fabing Su

doi:10.1016/j.cej.2022.135340

Atomically Dispersed Sn Incorporated into Carbon Matrix for Stable Electrochemical Lithium Storage

Qiongguang Li, Menglei Yuan, Yongjun Ji, Xiao Chen, Yanhong Wang^*, Xingyue Gao, Huifang Li, Hongyan He, Han Chen, Qiangqiang Tan, Guangwen Xu, Ziyi Zhong, Fabing Su^*

^*Corresponding author for this work

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Although possessing a high specific capacity, the practical implementation of SnO2 nanoparticles as a promising anode for lithium-ion batteries (LIBs) is hampered by their poor cyclability. This work demonstrates that incorporating single atomic Sn (SASn) species into a carbon matrix can address this issue effectively. The SASn/C composite was synthesized via polymerization of formaldehyde and 3-aminophenol in the presence of Tin (II) chloride, followed by pyrolysis. The SASn atoms were homogeneously dispersed in the carbon matrix. Each Sn atom coordinated with two O and two C atoms, forming the Sn-O-C and Sn-C bonds, providing channels for fast electron/ion transfer and boosting electrochemical kinetics. The SASn/C anode exhibited unique lithium storage behaviors, enhanced lithium storage capability, and excellent cyclic stability with a capacity fading rate of 0.0031% per cycle at 1000 mA g-1 after 7000 cycles. Density functional theory calculations reveal that one SASn atom can adsorb three Li+ ions at the fully discharged state during the discharging process. Subsequently, the Li+ ions are directly desorbed from the SASn atom, which is different from the traditional multi-step de-alloying process. This facile strategy represents a significant advancement in developing high-performance Sn-based anode materials for LIBs.

Original language	English
Journal	Chemical Engineering Journal
DOIs	https://doi.org/10.1016/j.cej.2022.135340
State	Published - 19 Feb 2022

Keywords

Single atom Sn
Cyclability
Lithium storage mechanism
Anode
Lithium-ion batteries

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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@article{a85e7e3893714e44a2419d42f9d2f5f1,

title = "Atomically Dispersed Sn Incorporated into Carbon Matrix for Stable Electrochemical Lithium Storage",

abstract = "Although possessing a high specific capacity, the practical implementation of SnO2 nanoparticles as a promising anode for lithium-ion batteries (LIBs) is hampered by their poor cyclability. This work demonstrates that incorporating single atomic Sn (SASn) species into a carbon matrix can address this issue effectively. The SASn/C composite was synthesized via polymerization of formaldehyde and 3-aminophenol in the presence of Tin (II) chloride, followed by pyrolysis. The SASn atoms were homogeneously dispersed in the carbon matrix. Each Sn atom coordinated with two O and two C atoms, forming the Sn-O-C and Sn-C bonds, providing channels for fast electron/ion transfer and boosting electrochemical kinetics. The SASn/C anode exhibited unique lithium storage behaviors, enhanced lithium storage capability, and excellent cyclic stability with a capacity fading rate of 0.0031% per cycle at 1000 mA g-1 after 7000 cycles. Density functional theory calculations reveal that one SASn atom can adsorb three Li+ ions at the fully discharged state during the discharging process. Subsequently, the Li+ ions are directly desorbed from the SASn atom, which is different from the traditional multi-step de-alloying process. This facile strategy represents a significant advancement in developing high-performance Sn-based anode materials for LIBs.",

keywords = "Single atom Sn, Cyclability, Lithium storage mechanism, Anode, Lithium-ion batteries",

author = "Qiongguang Li and Menglei Yuan and Yongjun Ji and Xiao Chen and Yanhong Wang and Xingyue Gao and Huifang Li and Hongyan He and Han Chen and Qiangqiang Tan and Guangwen Xu and Ziyi Zhong and Fabing Su",

year = "2022",

month = feb,

day = "19",

doi = "10.1016/j.cej.2022.135340",

language = "英语",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

}

TY - JOUR

T1 - Atomically Dispersed Sn Incorporated into Carbon Matrix for Stable Electrochemical Lithium Storage

AU - Li, Qiongguang

AU - Yuan, Menglei

AU - Ji, Yongjun

AU - Chen, Xiao

AU - Wang, Yanhong

AU - Gao, Xingyue

AU - Li, Huifang

AU - He, Hongyan

AU - Chen, Han

AU - Tan, Qiangqiang

AU - Xu, Guangwen

AU - Zhong, Ziyi

AU - Su, Fabing

PY - 2022/2/19

Y1 - 2022/2/19

N2 - Although possessing a high specific capacity, the practical implementation of SnO2 nanoparticles as a promising anode for lithium-ion batteries (LIBs) is hampered by their poor cyclability. This work demonstrates that incorporating single atomic Sn (SASn) species into a carbon matrix can address this issue effectively. The SASn/C composite was synthesized via polymerization of formaldehyde and 3-aminophenol in the presence of Tin (II) chloride, followed by pyrolysis. The SASn atoms were homogeneously dispersed in the carbon matrix. Each Sn atom coordinated with two O and two C atoms, forming the Sn-O-C and Sn-C bonds, providing channels for fast electron/ion transfer and boosting electrochemical kinetics. The SASn/C anode exhibited unique lithium storage behaviors, enhanced lithium storage capability, and excellent cyclic stability with a capacity fading rate of 0.0031% per cycle at 1000 mA g-1 after 7000 cycles. Density functional theory calculations reveal that one SASn atom can adsorb three Li+ ions at the fully discharged state during the discharging process. Subsequently, the Li+ ions are directly desorbed from the SASn atom, which is different from the traditional multi-step de-alloying process. This facile strategy represents a significant advancement in developing high-performance Sn-based anode materials for LIBs.

AB - Although possessing a high specific capacity, the practical implementation of SnO2 nanoparticles as a promising anode for lithium-ion batteries (LIBs) is hampered by their poor cyclability. This work demonstrates that incorporating single atomic Sn (SASn) species into a carbon matrix can address this issue effectively. The SASn/C composite was synthesized via polymerization of formaldehyde and 3-aminophenol in the presence of Tin (II) chloride, followed by pyrolysis. The SASn atoms were homogeneously dispersed in the carbon matrix. Each Sn atom coordinated with two O and two C atoms, forming the Sn-O-C and Sn-C bonds, providing channels for fast electron/ion transfer and boosting electrochemical kinetics. The SASn/C anode exhibited unique lithium storage behaviors, enhanced lithium storage capability, and excellent cyclic stability with a capacity fading rate of 0.0031% per cycle at 1000 mA g-1 after 7000 cycles. Density functional theory calculations reveal that one SASn atom can adsorb three Li+ ions at the fully discharged state during the discharging process. Subsequently, the Li+ ions are directly desorbed from the SASn atom, which is different from the traditional multi-step de-alloying process. This facile strategy represents a significant advancement in developing high-performance Sn-based anode materials for LIBs.

KW - Single atom Sn

KW - Cyclability

KW - Lithium storage mechanism

KW - Anode

KW - Lithium-ion batteries

U2 - 10.1016/j.cej.2022.135340

DO - 10.1016/j.cej.2022.135340

M3 - 文章

SN - 1385-8947

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

Atomically Dispersed Sn Incorporated into Carbon Matrix for Stable Electrochemical Lithium Storage

Abstract

Keywords

UN SDGs

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