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Huỳnh Lê Thanh Nguyên, Nguyễn Thị Hồng Ngư, Phan Thị Ánh Hồng, Nguyễn Thu Thảo, Nguyễn Thị Thu Trang, Nguyễn Hoàng Anh(1), Đào Anh Tuấn, Nguyễn Thái Hoàng, Lê Viết Hải(2)

CHẾ TẠO VẬT LIỆU ĐIỆN CỰC DƯƠNG (NH4)0,5V2O5 DẠNG THANH ĐỊNH HƯỚNG ỨNG DỤNG CHO ĐIỆN CỰC DƯƠNG TRONG ẮC QUY NATRI – ION

FABRICATION OF POSITIVE ELECTRODE (NH4)0.5V2O5 IN ROD-STRUCTURE FOR SODIUM – ION BATTERIES

Tạp chí Phân tích Hóa, Lý và Sinh học

2023

3

96

Sodium-ion batteries (SIBs) have gathered considerable attention as a potential alternative to lithium-ion batteries (LIBs), due to their abundant sodium resources, cost-effectiveness, and safety. However, a significant challenge in SIBs development lies in identifying high-performance cathode materials with exceptional rate capability and long-term cycling stability. This work explores the potential of (NH4)0.5V2O5as a promising cathode candidate for SIBs. The layered structural (NH4)0.5V2O5 was synthesized by hydrothermal method with the precursors V2O5, NH3 solution and HCOOH at 200oC for 24 hours. The structural and morphological properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman scattering spectroscopy. (NH4)0.5V2O5 demonstrated reversible intercalation of Na+ion with a specific capacity of 95 mAh.g-1at rate C/5 in potential 1.5-4 V (vs. Na+/Na) thus highlighting its potential as a high-performance SIBs cathode material.

Sodium-ion batteries (SIBs) have gathered considerable attention as a potential alternative to lithium-ion batteries (LIBs), due to their abundant sodium resources, cost-effectiveness, and safety. However, a significant challenge in SIBs development lies in identifying high-performance cathode materials with exceptional rate capability and long-term cycling stability. This work explores the potential of (NH4)0.5V2O5as a promising cathode candidate for SIBs. The layered structural (NH4)0.5V2O5 was synthesized by hydrothermal method with the precursors V2O5, NH3 solution and HCOOH at 200oC for 24 hours. The structural and morphological properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman scattering spectroscopy. (NH4)0.5V2O5 demonstrated reversible intercalation of Na+ion with a specific capacity of 95 mAh.g-1at rate C/5 in potential 1.5-4 V (vs. Na+/Na) thus highlighting its potential as a high-performance SIBs cathode material.

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