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001-es BibID:	BIBFORM118257
035-os BibID:	(Scopus)85182896817 (cikkazonosító)107058
Első szerző:	Vo, Thuan Ngoc
Cím:	ZnCl2-based activation for converting spent coffee grounds into a robust anode for Li-ion batteries / Thuan Ngoc Vo, Van Thuan Le, Nguyen Khoa Dang , My Loan Phung Le, Van Hoang Nguyen, Van Man Tran, Minh Thu Nguyen, Nhu Hoa Thi Tran, Tuan Loi Nguyen, Il Tae Kim
Dátum:	2024
ISSN:	0961-9534
Megjegyzések:	Achieving a net-zero target via a circular economy approach necessitates maximizing the recycling of waste into higher-value materials. In the present study, spent coffee grounds (SCG) from industrial food processing biomass waste are converted into a high-performance anode material used in lithium-ion batteries via one-step carbonization of ZnCl2 at 550 ?C. The hybrid composites (HCs) are collected after the process contained C- and Zn-based mixed oxides, such as zinc silicate (Zn2SiO4) and zinc ferrate (ZnFe2O4). The content of Zn-based mixed oxides in HCs increases with the initial ZnCl2:SCG mass ratio and reaches its maximum at a ratio of 2:1 wt/wt (HCs_2). The electrochemical performance of the HC-based anodes is proportional to the loaded Zn content when the ZnCl2:SCG mass ratio increases from 0 to 2. The optimized anode (HCs_2) exhibits a charge capacity of 692 mAh g?1 and capacity retention of 86 % at the 100th cycle, whereas the corresponding values for HCs_0 anode (without ZnCl2 treatment) are 311 mAh g?1 and 73.3 %. The superior electrochemical performance of the optimized anode is attributed to the nanosized Zn2SiO4 and ZnFe2O4, stabilization effect of activated carbon matrices, and a strategy that increases the proportions of high-capacity components.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Activated carbon Biomass wastes Lithium-ion batteries Nanostructure materials Spent coffee grounds Zinc silicate
Megjelenés:	Biomass & Bioenergy. - 181 (2024), p. 1-10. -
További szerzők:	Le, Van Thuan Dang, Nguyen Khoa Le, My Loan Phung Nguyen, Van Hoang Tran, Van Man Nguyen, Minh Thu Tran, Nhu Hoa Thi Nguyen, Tuan Loi Kim, Il Tae
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