Improve the Electrochemical Performance of Na2Ti3O7Nanorod through Pitch Coating

doi:10.1021/acssuschemeng.2c00047

IR > 石油化工学院

	Improve the Electrochemical Performance of Na2Ti3O7Nanorod through Pitch Coating
	Li, Shiyou1,2,3 ; Wen, Shuxiang 1,2; Ding, Hao 1; Yang, Li1 ; Zhao, Dongni1,2,3 ; Zhang, Ningshuang1,2,3 ; Dong, Hong 1; Wang, Shimin 1; Zhang, Jingjing 1; Wang, Jie 1
	2022-04-04
发表期刊	ACS Sustainable Chemistry and Engineering
卷号	10 期号:13 页码:4247-4257
摘要	Na2Ti3O7is proposed as a potential anode for sodium ion batteries (SIBs) because of its advantages of low operating voltage, high energy density, and low cost. However, the low conductivity and the structural instability of the intercalated phase limit its practical application. Herein, Na2Ti3O7@C nanorod composites are prepared by using Na2Ti3O7as the active substance particles and pitch as the carbon precursor. Pitch is selected due to the characteristics of low crystallinity, easy graphitization, and porous structure after carbonization. The results of electrochemical performance tests show that the Na2Ti3O7@C composite electrode has a good rate performance and stable cycle stability. In addition, the electrode thickness expansion rate of the Na2Ti3O7@C composite (22.28%) is lower than that of pure Na2Ti3O7(117.51%). The improvement of electrochemical performances mainly benefit from the porous structure of the pitch carbon layer, which reduces the volume expansion of Na2Ti3O7material from the charge-discharge process, avoids the damage of the solid electrolyte interphase (SEI) film outside the Na2Ti3O7@C composites, and thus maintains the integrity of the structure to extend the service life. This work offers some new perceptions into the mechanism of carbon coating. © 2022 American Chemical Society. All rights reserved.
关键词	Carbon Carbonization Crystallinity Electric discharges Electrochemical electrodes Expansion Lithium-ion batteries Metal ions Nanorods Porosity Sodium compounds Sodium-ion batteries Solid electrolytes Titanium compounds Electrochemical performance Higher energy density Low conductivity Low operating voltage Low-costs Pitch coating Porous structures Sodium ion batteries Through pitch Volume expansion
DOI	10.1021/acssuschemeng.2c00047
收录类别	EI
语种	英语
出版者	American Chemical Society
EI入藏号	20221511960496
EI主题词	Coatings
EI分类号	531.1 Metallurgy ; 701.1 Electricity: Basic Concepts and Phenomena ; 702.1.2 Secondary Batteries ; 761 Nanotechnology ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 813.2 Coating Materials ; 931.2 Physical Properties of Gases, Liquids and Solids ; 933 Solid State Physics ; 933.1 Crystalline Solids ; 951 Materials Science
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158385
专题	石油化工学院马克思主义学院
作者单位	1.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Gansu Engineering Laboratory of Electrolyte Material for Lithium-ion Battery, Lanzhou; 730050, China; 3.Gansu Engineering Laboratory of Cathode Material for Lithium-ion Battery, Baiyin; 730900, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Li, Shiyou,Wen, Shuxiang,Ding, Hao,et al. Improve the Electrochemical Performance of Na2Ti3O7Nanorod through Pitch Coating[J]. ACS Sustainable Chemistry and Engineering,2022,10(13):4247-4257.
APA	Li, Shiyou.,Wen, Shuxiang.,Ding, Hao.,Yang, Li.,Zhao, Dongni.,...&Wang, Jie.(2022).Improve the Electrochemical Performance of Na2Ti3O7Nanorod through Pitch Coating.ACS Sustainable Chemistry and Engineering,10(13),4247-4257.
MLA	Li, Shiyou,et al."Improve the Electrochemical Performance of Na2Ti3O7Nanorod through Pitch Coating".ACS Sustainable Chemistry and Engineering 10.13(2022):4247-4257.