Boron and Phosphorus Dual-Doped Carbon Coating Improves Electrochemical Performances of LiFe0.8Mn0.2PO4 Cathode Materials

doi:10.1021/acsaem.1c01318

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	Boron and Phosphorus Dual-Doped Carbon Coating Improves Electrochemical Performances of LiFe0.8Mn0.2PO4 Cathode Materials
	Tuo, Kuanyou 1,2; Mao, Liping 1,2; Ding, Hao 1,2; Dong, Hong 1,2; Zhang, Ningshuang 1,2,3; Fu, Xiaolan 1,2; Huang, Jin 1,2; Liang, Wenbiao 1,2; Li, Shiyou 1,2,3; Li, Chunlei 1,2,3
刊名	ACS APPLIED ENERGY MATERIALS
	2021-08-23
卷号	4 期号:8 页码:8003-8015
关键词	LiFe0.8Mn0.2PO4 boron/phosphorus dual doping carbon coating high-rate performance lithium-ion battery
ISSN号	2574-0962
DOI	10.1021/acsaem.1c01318
英文摘要	Although LiMPO4 (M = Fe, Mn) cathode materials have been widely applied in electric vehicles owing to the advantages of excellent safety, cycle stability, and low cost, poor electronic conductivity of LiMPO4 severely limits the further expansion of its applied field. Herein, the LiFe0.8Mn0.2PO4 composite with boron/phosphorus dual-doped carbon coating (LFMP@B/P-C) was fabricated by a sol-gel hydrothermal method. As a result, LFMP@B/P-C exhibits superior rate performance (97.1 mAh g(-1) at 20 C) and preferable low-temperature performance (78.2 mAh g(-1) at 1 C and -20 degrees C). It is mainly attributed to the synergistic effect of boron/phosphorus dual-doped carbon coatings, as confirmed by combined experimental characterizations with density functional theory calculations. That is, boron-doped carbon coating offers additional hole carriers, and phosphorus doping provides abundant electron carriers, making it easy for electrons to escape and enter and greatly improving the conductivity of the material. In addition, the phosphorus atom also acts as a bridge so that the carbon coating layer is tightly coated on the surface of the material. This will provide an idea for the research on the modification of cathode materials in the future.
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000688250200061
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148805]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China; 2.Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Lanzhou 730050, Peoples R China; 3.Gansu Engn Lab Cathode Mat Lithium Ion Battery, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Tuo, Kuanyou,Mao, Liping,Ding, Hao,et al. Boron and Phosphorus Dual-Doped Carbon Coating Improves Electrochemical Performances of LiFe0.8Mn0.2PO4 Cathode Materials[J]. ACS APPLIED ENERGY MATERIALS,2021,4(8):8003-8015.
APA	Tuo, Kuanyou.,Mao, Liping.,Ding, Hao.,Dong, Hong.,Zhang, Ningshuang.,...&Li, Chunlei.(2021).Boron and Phosphorus Dual-Doped Carbon Coating Improves Electrochemical Performances of LiFe0.8Mn0.2PO4 Cathode Materials.ACS APPLIED ENERGY MATERIALS,4(8),8003-8015.
MLA	Tuo, Kuanyou,et al."Boron and Phosphorus Dual-Doped Carbon Coating Improves Electrochemical Performances of LiFe0.8Mn0.2PO4 Cathode Materials".ACS APPLIED ENERGY MATERIALS 4.8(2021):8003-8015.