Trong nghiên cứu này, tổ hợp vật liệu graphite/nano Si/nano cácbon chế tạo bằng phương pháp nghiền và trộn trong dung dịch đơn giản, giá thành thấp ứng dụng cho điện cực anốt trong pin lithium sắt phốt phát (LFP). | TNU Journal of Science and Technology 227 08 56 - 63 RESEARCH AND FABRICATION OF GRAPHITE NANOSILIC NANOCARBONCOMPOSITE FOR ANODE ELECTRODES IN LITHIUM ION BATTERIES Nguyen Thi Ngoc Bui Xuan Thanh Ngo Viet Hoang Nguyen Thi Lan Duong Thanh Tung Hanoi University of Science and Technology ARTICLE INFO ABSTRACT Received 05 01 2022 Silicon is a potential next generation anode material for lithium- ion batteries because of its high theoritical capacity and abundance in Revised 19 4 2022 natural. However its commercial application was hindered by poor Published 21 4 2022 electronic conductivity and large volume expansion during electrochemical reactions. In this study the graphite nano KEYWORDS silicon nano carbon composite materials were prepared by a facile and low-cost mixing and grinding in solution process as an anode Lithium Iron phosphat batery electrode for lithium iron phosphate batteries LFP . LFP batteries Nano Silic that use anode electrodes with different Si Graphite ratios are tested Composite using measurements of charge discharge cyclic differential capacity and electrochemical impedence spectrum. The results revealed that the Carbon anode addition of silicon nanoporous with a mass ratio of Si G 5 95 and Charge-discharge capacity 15 85 in the graphite nanocarbon matrix improved the capacity charge- discharge energy of the LFP battery by 100 - 200 respectively compared to the battery using only graphite nano carbon anode. Although the differential capacity curves represent slight change for silicon nanoporous additional anode culombic performance still remains more than 92 after 20 cycles. This shows that nano Si has great potential for application in high-capacity li-ion batteries. NGHIÊN CỨU CHẾ TẠO VẬT LIỆU TỔ HỢP GRAPHITE NANO SILIC NANO CÁCBON CHO ĐIỆN CỰC ANỐT TRONG PIN LITHIUM ION Nguyễn Thị Ngọc Bùi Xuân Thành Ngô Việt Hoàng Nguyễn Thị Lan Dương Thanh Tùng Trường Đại học Bách khoa Hà Nội THÔNG TIN BÀI BÁO TÓM TẮT Ngày nhận
