南方科技大学知识苑(SUSTech KC): K doping stabilizes three-dimensional K0.2Na1.3Mn0.5O2-d as high-performance cathode for sodium-ion batteries

题名	K doping stabilizes three-dimensional K_0.2Na_1.3Mn_0.5O_2-d as high-performance cathode for sodium-ion batteries
作者	Xu, Jia-Hao1,2 ; Zhu, You-Huan2 ; Yang, Wei-Min 1; Cheng, Hua 3; Lu, Zhou-Guang2
通讯作者	Yang, Wei-Min; Cheng, Hua; Lu, Zhou-Guang
发表日期	2024-06-01
DOI	10.1007/s12598-024-02814-6
发表期刊	RARE METALS 影响因子和分区
ISSN	1001-0521
EISSN	1867-7185
摘要	It is a difficult challenge to simultaneously employ the cationic and anionic redox chemistry in cathode materials for sodium-ion batteries with high energy. Even though layered oxides (classified as two-dimensional oxides) demonstrate excellent promise in the high discharge capacity, their poor oxygen transformation via redox reactions is limited by crystal instability. Therefore, a doping strategy was conceived to tackle this issue and increase redox efficiency. K doping was applied to transform the two-dimensional Na1.3Mn0.7O2 (NMO) to three-dimensional K0.2Na1.3Mn0.5O2 (KNMO), preventing the irreversible phase shift and preserving the crystal structure's stability while cycling. With this modification treatment, KNMO features manganese and oxygen reactive sites, delivering a promising energy density of 190 mAhg(-1) at 5 mAg(-1) in the 2.0-4.5 V voltage range (vs. 71.4 mAhg(-1) for the pristine NMO). Moreover, it displays improved capacity retention of more than 83.5% after 50 cycles at 50 mAg(-1). The results demonstrated that doped intercalation oxides were promising for redox oxygen transformation in sodium-ion batteries.
关键词	High-performance cathode Metal ion dopings Sodium-ion batteries Three-dimensional structure
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	通讯
资助项目	Research Projects of Department of Education of Guangdong Province[2023KTSCX319] ; null[6021310029K]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001244875400003
出版者	NONFERROUS METALS SOC CHINA
ESI学科分类	MATERIALS SCIENCE
来源库	Web of Science
引用统计	被引频次[WOS]：1
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/787670
专题	工学院_材料科学与工程系
作者单位	1.Shenzhen Polytech Univ, Ind Training Ctr, Shenzhen 518055, Peoples R China 2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China 3.Shenzhen Polytech Univ, Sch Mat Sci & Environm Engn, Shenzhen 518055, Peoples R China
第一作者单位	材料科学与工程系
通讯作者单位	材料科学与工程系
推荐引用方式 GB/T 7714	Xu, Jia-Hao,Zhu, You-Huan,Yang, Wei-Min,et al. K doping stabilizes three-dimensional K_0.2Na_1.3Mn_0.5O_2-d as high-performance cathode for sodium-ion batteries[J]. RARE METALS,2024.
APA	Xu, Jia-Hao,Zhu, You-Huan,Yang, Wei-Min,Cheng, Hua,&Lu, Zhou-Guang.(2024).K doping stabilizes three-dimensional K_0.2Na_1.3Mn_0.5O_2-d as high-performance cathode for sodium-ion batteries.RARE METALS.
MLA	Xu, Jia-Hao,et al."K doping stabilizes three-dimensional K_0.2Na_1.3Mn_0.5O_2-d as high-performance cathode for sodium-ion batteries".RARE METALS (2024).