Modulating the Electrochemical Performances of Layered Cathode Materials for Sodium Ion Batteries through Tuning Coulombic Repulsion between Negatively Charged TMO2 Slabs

doi:10.1021/acsami.7b15590

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	Modulating the Electrochemical Performances of Layered Cathode Materials for Sodium Ion Batteries through Tuning Coulombic Repulsion between Negatively Charged TMO2 Slabs
	Li, ZY; Wang, HB; Yang, WY; Yang, JB; Zheng, LR; Chen, DF; Sun, K; Han, SB; Liu, XF; Zheng LR(郑黎荣)
	2018
发表期刊	ACS APPLIED MATERIALS & INTERFACES (IF:7.504[JCR-2016],7.823[5-Year])
ISSN	1944-8244
卷号	10 期号:2 页码:1707-1718
文章类型	Article
摘要	Exploiting advanced layered transition metal oxide cathode materials is of great importance to rechargeable sodium batteries. Layered oxides are composed of negatively charged TMO2 slabs (TM = transition metal) separated by Na+ diffusion layers. Herein, we propose a novel insight, for the first time, to control the electrochemical properties by tuning Coulombic repulsion between negatively charged TMO2 slabs. Coulombic repulsion can finely tailor the d-spacing of Na ion layers and material structural stability, which can be achieved by employing Na+ cations to serve as effective shielding layers between TMO2 layers. A series of O3-type NaxMn1/3Fe1/3Cu1/6Mg1/6O2 (x = 1.0, 0.9, 0.8, and 0.7) have been prepared, and Na0.7Mn1/3Fe1/3Cu1/6Mg1/6O2 shows the largest Coulombic repulsion between TMO2 layers, the largest space for Na ion diffusion, the best structural stability, and also the longest Na-O chemical bond with weaker Coulombic attraction, thus leading to the best electrochemical performance. Meanwhile, the thermal stability depends on the Na concentration in pristine materials. Ex situ X-ray absorption (XAS) analysis indicates that Mn, Fe, and Cu ions are all electrochemically active components during insertion and extraction of sodium ion. This study enables some new insights to promote the development of advanced layered NaxTMO(2) materials for rechargeable sodium batteries in the future.
关键词	layered oxides Coulombic repulsion neutron diffraction cathode materials sodium ion batteries
DOI	10.1021/acsami.7b15590
关键词[WOS]	TRANSITION-METAL OXIDES ; ENERGY-STORAGE ; STRUCTURAL EVOLUTION ; HIGH-CAPACITY ; HIGH-POWER ; P2-TYPE ; INTERCALATION ; SUBSTITUTION ; INSIGHTS ; ELEMENTS
收录类别	SCI ; EI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000423140400028
EI入藏号	20180404669994
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/285562
专题	多学科研究中心
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Li, ZY,Wang, HB,Yang, WY,et al. Modulating the Electrochemical Performances of Layered Cathode Materials for Sodium Ion Batteries through Tuning Coulombic Repulsion between Negatively Charged TMO2 Slabs[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(2):1707-1718.
APA	Li, ZY.,Wang, HB.,Yang, WY.,Yang, JB.,Zheng, LR.,...&郑黎荣.(2018).Modulating the Electrochemical Performances of Layered Cathode Materials for Sodium Ion Batteries through Tuning Coulombic Repulsion between Negatively Charged TMO2 Slabs.ACS APPLIED MATERIALS & INTERFACES,10(2),1707-1718.
MLA	Li, ZY,et al."Modulating the Electrochemical Performances of Layered Cathode Materials for Sodium Ion Batteries through Tuning Coulombic Repulsion between Negatively Charged TMO2 Slabs".ACS APPLIED MATERIALS & INTERFACES 10.2(2018):1707-1718.