A Study on Surface Modification Characteristics and Charge-Discharge Mechanism of Natural Serpentinite Ore Secondary Battery

被引：0
作者：
Zhao, Jun-Ren [1 ]
Chen, Kuan-Jen [2 ]
Hung, Fei-Yi [1 ]
Tsai, Yung-Yi [1 ]
Wu, Po-Ting [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan
[2] Southern Taiwan Univ Sci & Technol, Dept Mech Engn, Tainan 710, Taiwan
来源：
INORGANICS | 2024年 / 12卷 / 01期
关键词：
ore battery; serpentinite; magnesium iron silicate; sulfidation; charge-discharge; IRON-OXIDE FILMS; PYRITE; TEMPERATURE; MN; FE; CO;
D O I：
10.3390/inorganics12010013
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
This study conducts low-vacuum sulfidation to form a sulfidation layer on the serpentinite-derived magnesium iron silicate, thereby enhancing its electrochemical properties. Results show (Mg,Fe)2SiO4 calcined at 900 degrees C has the best crystallinity, and the cubic FeS2 is synthesized on the surface of the orthorhombic magnesium iron silicate (MFS). Two distinct charge plateaus can be distinguished during the first charge process, and the discharge capacities increased significantly. This study confirms that the surface FeS2 layer provides extra ion pathways, allowing more lithium/magnesium ions to be extracted and inserted in the serpentinite-derived magnesium iron silicate. Accordingly, the serpentinite electrode boasts straightforward exploitation with low-cost advantages and potential.
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页数：19
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