气候变化领域集成服务门户(CCPortal): A theoretical framework for oxygen redox chemistry for sustainable batteries

CCPortal

DOI	10.1038/s41893-022-00890-z
	A theoretical framework for oxygen redox chemistry for sustainable batteries
	Kim, Byunghoon; Song, Jun-Hyuk; Eum, Donggun; Yu, Seungju; Oh, Kyungbae; Lee, Myeong Hwan; Jang, Ho-Young; Kang, Kisuk
发表日期	2022
ISSN	2398-9629
起始页码	708
结束页码	716
卷号	5 期号:8 页码:9
英文摘要	Lithium-rich layered oxides have emerged as a new model for designing the next generation of cathode materials for batteries to assist the transition to a greener energy system. The unique oxygen redox mechanism of such cathodes enables extra energy storage capacity beyond the contribution from merely transition metal ions; however, their practical application is hindered by the destabilizing structural changes during operation. Here we present a theoretical framework for the triptych of structural disorder, bond covalency and oxygen redox chemistry that applies to a wide range of layered oxides. It is revealed that structural disorder stabilizes the oxygen redox by promoting the formation of oxygen covalent bonds in favour of electrochemical reversibility. Oxygen dimers are found to move freely within the lattice structure and serve as a key catalyst of the poor structural resilience. Such fundamental understanding provides fresh insights that could inform strategies to mitigate the limitations of anionic redox cathodes, moving us a step closer to tapping into their enormous potential. Anionic redox has emerged as a new frontier in the design of high-energy cathode materials for next-generation batteries. This study provides a theoretical framework to understand the trilateral correlation of oxygen redox, structural disorder and bond covalency.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000802862200002
来源期刊	NATURE SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272826
作者单位	Seoul National University (SNU); Institute for Basic Science - Korea (IBS); Seoul National University (SNU); Seoul National University (SNU); Seoul National University (SNU); Seoul National University (SNU)
推荐引用方式 GB/T 7714	Kim, Byunghoon,Song, Jun-Hyuk,Eum, Donggun,et al. A theoretical framework for oxygen redox chemistry for sustainable batteries[J],2022,5(8):9.
APA	Kim, Byunghoon.,Song, Jun-Hyuk.,Eum, Donggun.,Yu, Seungju.,Oh, Kyungbae.,...&Kang, Kisuk.(2022).A theoretical framework for oxygen redox chemistry for sustainable batteries.NATURE SUSTAINABILITY,5(8),9.
MLA	Kim, Byunghoon,et al."A theoretical framework for oxygen redox chemistry for sustainable batteries".NATURE SUSTAINABILITY 5.8(2022):9.