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Optimal tailored preparation of Sb/Sb4O5Cl2 nanosheet composite anodes for efficient sodium-ion storage

Nguyen Biomaterials and Nanotechnology Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, 700000, Viet Nam|
Il Tae (57198443251) | Tuan Loi (57194379132); Kim | Thuy-An (57814003900); Nguyen Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang City, 550000, Viet Nam| Tejaswi Tanaji (57205455032); Nguyen Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Viet Nam| Quoc Hai (57203956354); Salunkhe Department of Chemical and Biological Engineering, Gachon University, Gyeonggi-do, Seongnam-si, 13120, South Korea|

Electrochimica Acta Số , năm 2022 (Tập 436, trang -)

ISSN: 134686

ISSN: 134686

DOI: 10.1016/j.electacta.2022.141429

Tài liệu thuộc danh mục:



Từ khóa: Anodes; Antimony; Antimony compounds; Chlorine compounds; Metal ions; Nanosheets; Reaction kinetics; Sodium compounds; Structural optimization; Substitution reactions; Amorphous phasis; Anode material; Composite anodes; Electrochemical performance; Galvanic replacement reactions; Ion storage; Sb-O-cl composite; Sheet structure; Sodium ion batteries; Sodium ions; Sodium-ion batteries
Tóm tắt tiếng anh
Herein, we report the preparation of Sb/Sb4O5Cl2 nanosheet composites (NSCs) via a galvanic replacement reaction for application as advanced anode materials for sodium-ion batteries. X-ray diffraction and electron microscopy analyses reveal the presence of Sb and Sb4O5Cl2 phases with sheet structures, and amorphous and crystalline regions. The reaction time significantly influences both the sheet size and the amount of amorphous phase in the Sb/Sb4O5Cl2 NSCs. The Sb/Sb4O5Cl2–6 h NSCs exhibits notable electrochemical performance, including high Na-ion storage capacity, high rate capability, and outstanding cycling stability compared to the Sb/Sb4O5Cl2–12 h NSCs. The difference in the electrochemical performances can be assigned to the presence of sheet structures and optimum amorphous phases that act as buffers against the volumetric variation, prevent the destruction of the electrodes during charge/discharge, and improve the reaction kinetics. A full battery consisting of Sb/Sb4O5Cl2||NaxFeFe(CN)6 is developed with an Sb/Sb4O5Cl2–6 h NSC anode and a NaxFeFe(CN)6 cathode. This full battery presents a high working potential of up to 2.45 V, high energy density of 110 Wh kg−1, excellent rate capacity, and stable capability. © 2022 Elsevier Ltd

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