Determining effects of doping lithium nickel oxide with tungsten using Compton scattering.

Autor:	Kothalawala, Veenavee Nipunika, Suzuki, Kosuke, Li, Xin, Barbiellini, Bernardo, Nokelainen, Johannes, Makkonen, Ilja, Ferragut, Rafael, Tynjälä, Pekka, Laine, Petteri, Välikangas, Juho, Hu, Tao, Lassi, Ulla, Takano, Kodai, Tsuji, Naruki, Amada, Yosuke, Sasikala Devi, Assa Aravindh, Alatalo, Matti, Sakurai, Yoshiharu, Sakurai, Hiroshi, Babar, Mohammad
Předmět:	NICKEL oxides TUNGSTEN COMPTON scattering LITHIUM-ion batteries ELECTRIC conductivity
Zdroj:	APL Energy; Jun2024, Vol. 2 Issue 2, p1-7, 7p
Abstrakt:	X-ray Compton scattering experiments along with parallel first-principles computations were carried out on LiNiO2 to understand the effects of W doping on this cathode material for Li-ion batteries. By employing high-energy x rays exceeding 100 keV, an insight is gained into the fate of the W valence electrons, which are adduced to undergo transfer to empty O 2p energy bands within the active oxide matrix of the cathode. The substitution of W for Ni is shown to increase the electronic conductivity and to enhance the total magnetization per Ni atom. Our study demonstrates that an analysis of line shapes of Compton scattered x rays in combination with theoretical modeling can provide a precise method for an atomic level understanding of the nature of the doping process. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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