TỔNG HỢP VÀ NGHIÊN CỨU TÍNH CHẤT ĐIỆN HÓA CỦA VẬT LIỆU ĐIỆN CỰC DƯƠNG Na1,0Li0,05Mn0,6Ni0,3Al0,05O2 DÙNG CHO PIN ION NATRI=FABRICATION AND ELECTROCHEMICAL CHARACTERIZATION OF CATHODE MATERIAL Na1.0Li0.05Mn0.6Ni0.3Al0.05O2 FOR SODIUM ION BATTERIES

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Tiến Phát Đoàn, Trung Sơn Lương, Quý Quyền Ngô, Thị Lan Ngô, Văn Nghĩa Nguyễn, Văn Tuấn Nguyễn, Văn Nguyện Tô

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Journal of Science and Technique: Section on Physics and Chemical Engineering, 2024

Mô tả vật lý: tr.102

Bộ sưu tập: Metadata

ID: 483706

Thêm vào giỏ

Pin ion natri có cấu tạo và cơ chế hoạt động tương tự như pin ion lithium và đang dần chứng tỏ là giải pháp thay thế lý tưởng cho pin ion natri. Trong bối cảnh đó, cần phải có những nghiên cứu về vật liệu điện cực cho loại pin này nhằm cải thiện dung lượng, tính ổn định và tiết kiệm chi phí sản xuất, để sớm đưa pin ion natri vào thương mại hóa. Với những mục tiêu như trên, trong nghiên cứu này chúng tôi đã tổng hợp thành công vật liệu Na1,0Li0,05Mn0,6Ni0,3Al0,05O2 bằng phương pháp sol-gel kết hợp với nung. Kết quả chỉ ra rằng, vật liệu chế tạo được có cấu trúc P2, đạt dung lượng riêng cao nhất là 142,2 mAh/g với mật độ dòng phóng là 10 mA/g trong khoảng thế 1,5 - 4,1 V
tính ổn định của vật liệu duy trì được 89,1% sau 50 chu kỳ và 76,4% sau 100 chu kỳ nạp xả tại mật độ dòng 15 mA/g trong khoảng thế 1,5 - 4,1 V, hứa hẹn là vật liệu tiềm năng cho sản xuất cực dương cho pin ion natri.Sodium-ion batteries exhibit structural and operational similarities to lithium-ion batteries, and they are increasingly recognized as a viable alternative to lithium-ion batteries. In this context, it is imperative to investigate electrode materials specific to sodium-ion batteries to enhance their capacity, stability, and cost-effectiveness, thereby facilitating their commercialization in the near future. In pursuit of these objectives, this study successfully synthesized Na1.0Li0.05Mn0.6Ni0.3Al0.05O2using a sol-gel method followed by calcination. The resulting material demonstrated a P2 crystal structure and achieved a maximum specific capacity of 142.2 mAh g-1 at a discharge current density of 10 mA g-1 within the voltage range of 1.5 to 4.1 V. Furthermore, the material exhibited commendable stability, maintaining 89.1% capacity retention after 50 cycles and 76.4% after 100 charge-discharge cycles at a current density of 15 mA g-1 within the same voltage range, indicating its potential as a cathode material for sodium-ion batteries.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR