Real-time observation of phase transition from layered to spinel phase under electron beam irradiation

Autor:	Jong Hyeok Seo, Joon Yong Park, Yong-Il Kim, Ki Min Nam, Jae Hyuck Jang, Ji-Hwan Kwon
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	Co(OH)2 Spinel Co3O4 Phase transition Electron beam irradiation Chemistry QD1-999 Analytical chemistry QD71-142
Zdroj:	Journal of Analytical Science and Technology, Vol 14, Iss 1, Pp 1-8 (2023)
Druh dokumentu:	article
ISSN:	2093-3371
DOI:	10.1186/s40543-023-00395-0
Popis:	Abstract Transition metal hydroxides (TM(OH)2) have drawn significant attention for their potential applications in the environmental and energy field. In this study, we investigated the phase transition of cobalt hydroxide (Co(OH)2) under electron beam irradiation using in situ high-resolution transmission electron microscopy. Both the α- and β-Co(OH)2 phases underwent a phase transition to a spinel Co3O4 phase, forming nanograins with a porous morphology. However, the α-Co(OH)2 showed a faster phase transition and dramatic volume shrinkage during the phase transition. Our results provide a detailed explanation of the mechanism behind the deterioration of the layered structure and the emergence of defects during the phase transition.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/0e182514914f4ac08698531e62d55bca Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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