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. 23, 2022
Filed:
Nov. 14, 2019
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Xiqing Wang, Ningde, CN;
Yongsheng Guo, Ningde, CN;
Chengdu Liang, Ningde, CN;
Shuojian Su, Ningde, CN;
Ying Wang, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Fujian Province, CN;
Abstract
The present disclosure provides a prussian blue analogue positive electrode material, a preparation method therefor and an electrochemical energy storage device. A molecular formula of the prussian blue analogue positive electrode material is AM[M'(CN)](b-HO)L.□.(i-HO), where, A is one or more selected from a group consisting of alkali metal cation, alkaline-earth metal cation, Znand Al; M is a metal with the valence of 2+ or 3+; M′ is a metal with the valence of 2+ or 3+; b-HO is a coordinated water; □ is a M′(CN)cavity; L is a neutral ligand, the neutral ligand is one or more selected from a group consisting of CHCN, NH, CO and CHN; i-HO is an interstitial water; 0<x≤2; 0<c≤1; 0<y<1; 0<d≤6y; 0≤z≤16. In the prussian blue analogue positive electrode material of the present disclosure, the neutral ligand L participates in the coordination with a transition metal and substitutes the coordinated water partly or wholly, so that a content of the coordinated water is decreased or even eliminated, therefore, the water absorption performance of the prussian blue analogue positive electrode material will be decreased significantly, in turn the performance of the electrochemical energy storage device is significantly improved.