The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2025
Filed:
Mar. 13, 2024
Beijing University of Chemical Technology, Beijing, CN;
Ying Xiao, Beijing, CN;
Yue Miao, Beijing, CN;
Fenglian Gong, Beijing, CN;
Shilin Hu, Beijing, CN;
Shimou Chen, Beijing, CN;
Abstract
This invention introduces a homologous heterostructure FeSe electrode material with exceptional tap density and its preparation method, situated within a specific technical domain. The material comprises a unique homo-heterostructure of tetragonal t-FeSe and hexagonal h-FeSe, boasting a tap density of 2.57 cm3g-1. It is synthesized by uniformly mixing iron and selenium powders, followed by heating in a tube furnace. This carbon-free, homologous heterogeneous crystalline FeSe, designed as a sodium-ion battery anode, demonstrates notable structural stability and superior rate performance. The invention enhances charge transfer efficiency through charge redistribution and lattice distortion at the phase boundary, facilitates metal ion transport, and introduces extra active sites for reversible redox reactions. These features significantly boost the material's ion transport kinetics and storage capacity, leading to remarkable long-cycle and high-rate performance.