气候变化领域集成服务门户(CCPortal): Reversible anionic redox activity in Na3RuO4 cathodes: A prototype Na-rich layered oxide

CCPortal

DOI	10.1039/c7ee03554c
	Reversible anionic redox activity in Na3RuO4 cathodes: A prototype Na-rich layered oxide
	Qiao Y.; Guo S.; Zhu K.; Liu P.; Li X.; Jiang K.; Sun C.-J.; Chen M.; Zhou H.
发表日期	2018
ISSN	17545692
起始页码	299
结束页码	305
卷号	11 期号:2
英文摘要	Sodium-ion batteries are attractive for large-scale energy storage due to the abundance of sodium, but the deficient capacity achieved by cathode materials prevents their further applications. Chemical substitution of Na in transition metal layers is a promising solution to utilize both the cationic and anionic redox activities for boosting energy storage. Unfortunately, different from the classic Li-rich Li2MnO3, a pure prototype with anionic redox activity has not been found among the typical Na-rich cathodes. Herein, we originally design a Na-rich layered oxide prototype, namely Na3RuO4 (Ru5+), which delivers a partial reversible capacity solely via the participation of oxygen anions. More importantly, the anionic redox activity is validated by the in situ Raman observation of reversible peroxo-based O-O (de)bonding upon cycling. Our findings not only highlight the multiple electron-transfer strategy for capacity extension, but also broaden the horizon in designing Na-rich electrode materials for high-energy sodium-ion batteries. © 2018 The Royal Society of Chemistry.
英文关键词	Battery storage; Cathodes; Chemical bonds; Electric batteries; Electrodes; Energy storage; Ions; Metal ions; Redox reactions; Ruthenium compounds; Secondary batteries; Sodium-ion batteries; Transition metals; Cath-ode materials; Chemical substitution; Electrode material; Layered oxides; Multiple electron transfer; Redox activity; Reversible capacity; Transition metal layers; Sodium compounds; anion; chemical bonding; chemical reaction; design; electrode; energy storage; inorganic compound; oxide; oxygen; redox potential; sodium; transition element
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190313
作者单位	Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China; Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, 305-8568, Japan; Graduate School of System and Information Engineering, University of Tsukuba, 1-1-1, Tennoudai, Tsukuba, 305-8573, Japan; State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, United States
推荐引用方式 GB/T 7714	Qiao Y.,Guo S.,Zhu K.,et al. Reversible anionic redox activity in Na3RuO4 cathodes: A prototype Na-rich layered oxide[J],2018,11(2).
APA	Qiao Y..,Guo S..,Zhu K..,Liu P..,Li X..,...&Zhou H..(2018).Reversible anionic redox activity in Na3RuO4 cathodes: A prototype Na-rich layered oxide.Energy & Environmental Science,11(2).
MLA	Qiao Y.,et al."Reversible anionic redox activity in Na3RuO4 cathodes: A prototype Na-rich layered oxide".Energy & Environmental Science 11.2(2018).