Few layered graphene wrapped Sn4P3 with high initial coulombic efficiency and cyclic stability for reversible Li+ storage

时间:2022-04-13作者:浏览量:127


Few layered graphene wrapped Sn4P3 with high initial coulombic efficiency and cyclic stability for reversible Li+ storage

作者:

Qi, J (Qi, Jun) [1] ; Zhang, JQ (Zhang, Jiaqing) [1] ; Liu, JW (Liu, Jiangwen) [1] ; Ouyang, LZ (Ouyang, Liuzhang) [1] ; Wang, H (Wang, Hui) [1] ; Yang, LC (Yang, Lichun) [1] , [2] ; Hu, RZ (Hu, Renzong) [1]

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卷899

文献号163198

DOI10.1016/j.jallcom.2021.163198

出版时间APR 5 2022

在线发表DEC 2021

已索引2022-02-08

文献类型Article

摘要

To enhance the rate capability and cyclic stability, we develop few layered graphene wrapped nanocrystalline/amorphous Sn4P3 (named as Sn4P3@FLG) by ball milling. The high energy output of vibrational ball milling enables tight contact of Sn4P3 with FLG via P-O-C bonding as well as compact structure with a high tap density of 4.5 g cm(-3). The constraint of FLG not only enhances kinetics of electron and Li+ transfer, but also relieves the volume variation and particle aggregation of Sn4P3 during the lithiation/delithiation process. Therefore, Sn4P3@FLG exhibits superior rate and cyclic performance when evaluated as anode material for lithium-ion batteries. At 0.1 A g(-1), it delivers a high reversible capacity of 1077.6 mA h g(-1) with a high coulombic efficiency of 89.0% in the first cycle. Even at 1 A g(-1), it still retains 929.6 mA h g(-1) after 830 cycles. Furthermore, when matched with commercial LiFePO4 cathode in a full cell, it delivers a reversible capacity of 778.0 mA h g(-1), with a coulombic efficiency of 79.4%. Considering the high tap density of 4.5 g cm(-3), the volumetric capacity of Sn4P3@FLG can be as high as 3500 A h dm(-3). Therefore, Sn4P3@FLG can be a promising anode material for high performance lithium-ion batteries. (C) 2021 Elsevier B.V. All rights reserved.


关键词

作者关键词Tin phosphideLithium-ion batteryAnodeFew layered grapheneBall milling

Keywords PlusHIGH-PERFORMANCE ANODELITHIUM-IONSODIUM-IONELECTROCHEMICAL REACTIONTIN PHOSPHIDEHIGH-CAPACITYLOW-COSTPHOSPHORUSSNINTERCALATION

作者信息

通讯作者地址

Yang, Lichun;

Hu, Renzong

(通讯作者)

South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China

地址

1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China

2 Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

电子邮件地址mslcyang@scut.edu.cnmsrenzonghu@scut.edu.cn

类别/分类

研究方向ChemistryMaterials ScienceMetallurgy & Metallurgical Engineering