New Strategy to Build a High-Performance P′2-Type Cathode Material through Oxygen Vacancies and Mg Substitution for Sodium-Ion Batteries

doi:10.1021/acsaem.3c03039

IMR OpenIR

	New Strategy to Build a High-Performance P′2-Type Cathode Material through Oxygen Vacancies and Mg Substitution for Sodium-Ion Batteries
	Su, Chang 1; Liu, Guoqiang 1,4; Sun, Qiang 1; Wen, Lei 5; Chen, Zeyu 2; Zhao, Meiju 3
通讯作者	Liu, Guoqiang(liugq@smm.neu.edu.cn) ; Wen, Lei(leiwen@imr.ac.cn)
	2024-02-29
发表期刊	ACS APPLIED ENERGY MATERIALS
ISSN	2574-0962
卷号	7 期号:5 页码:1927-1937
摘要	The series P2-type Mn-Fe-based layered oxide materials (Na2/3MnxFe1-xO2) for sodium-ion batteries are regarded as potential commercial cathode materials due to their high specific capacity and low cost. However, the P2-type layered oxide cannot avoid some phase transformation during the charge-discharge process, which results in poor structural reversibility and low-capacity retention. Moreover, a high capacity usually means more insertion/extraction of Na+, which results in large changes in the lattice volume and poor cycling stability. Herein, a new strategy containing oxygen vacancies and Mg substitution is designed to obtain high-performance sodium storage of Mn-Fe-based layered oxide. The P ' 2-type Na0.67Mn0.85Fe0.1Mg0.05O2-delta (Ovs & Mg-sub) cathode material is synthesized by the above-mentioned dual-modification strategy. The effect of oxygen vacancies and Mg substitution on the structural evolution during the charge-discharge process is further investigated by in situ X-ray diffraction techniques. It demonstrates that Ovs & Mg-sub has reversible structural transformation and smaller lattice volume changes, thus further exhibiting prominent electrochemical properties. The initial discharge specific capacity reaches 190.2 mAh g(-1) at a current density of 20 mA g(-1) and remains at 152.9 mAh g(-1) at a current density of 100 mA g(-1) after 100 cycles. In addition, it has a superior rate capability of 88.9 mAh g(-1) at a current density of 2000 mA g(-1).
关键词	oxygen vacancies Mg substitution Mn-Fe-basedlayered oxide cathode sodium-ion batteries improvethe structural stability
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI	10.1021/acsaem.3c03039
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U23B20139] ; National Natural Science Foundation of China
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:001178670200001
出版者	AMER CHEMICAL SOC
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	http://ir.imr.ac.cn/handle/321006/184734
专题	中国科学院金属研究所
通讯作者	Liu, Guoqiang; Wen, Lei
作者单位	1.Northeastern Univ, Sch Met, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Liaoning, Peoples R China 2.Northeastern Univ, Sch Mech Engn & Automat, Dept Vehicle Engn, Shenyang 110819, Liaoning, Peoples R China 3.Shandong Tianhan New Energy Technol Co Ltd, Zaozhuang 277000, Shandong, Peoples R China 4.Sichuan Vocat & Tech Coll, Suining 629000, Sichuan, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Su, Chang,Liu, Guoqiang,Sun, Qiang,等. New Strategy to Build a High-Performance P′2-Type Cathode Material through Oxygen Vacancies and Mg Substitution for Sodium-Ion Batteries[J]. ACS APPLIED ENERGY MATERIALS,2024,7(5):1927-1937.
APA	Su, Chang,Liu, Guoqiang,Sun, Qiang,Wen, Lei,Chen, Zeyu,&Zhao, Meiju.(2024).New Strategy to Build a High-Performance P′2-Type Cathode Material through Oxygen Vacancies and Mg Substitution for Sodium-Ion Batteries.ACS APPLIED ENERGY MATERIALS,7(5),1927-1937.
MLA	Su, Chang,et al."New Strategy to Build a High-Performance P′2-Type Cathode Material through Oxygen Vacancies and Mg Substitution for Sodium-Ion Batteries".ACS APPLIED ENERGY MATERIALS 7.5(2024):1927-1937.