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- Title
In Situ Self‐Assembly of Core–Shell Multimetal Prussian Blue Analogues for High‐Performance Sodium‐Ion Batteries.
- Authors
Yin, Jinwen; Shen, Yi; Li, Chang; Fan, Chenyang; Sun, Shixiong; Liu, Yi; Peng, Jian; Qing, Li; Han, Jiantao
- Abstract
Metal–organic frameworks (MOFs), such as Prussian blue and its analogues (PB and PBAs) with open frameworks have attracted tremendous attentions as cathode materials for sodium‐ion batteries, owing to their simple method of synthesis and high theoretical specific capacity. In this study, core–shell‐structured PBAs are prepared by an in situ self‐assembly method. Owing to the advantages of both constituents, the as‐prepared core–shell PBAs show excellent rate and cycling electrochemical properties through a dual‐level‐controlled charge–discharge depth mechanism. It delivers a specific capacity of 104.3 mAh g−1 at 0.1 C, as well as a remarkably enhanced cycle performance, giving 88.3 % of its initial capacity over 1000 cycles at 300 mA g−1. In particular, the coating strategy described herein could be extended to other MOF materials, leading to wider application in energy storage.
- Subjects
SODIUM ions; PRUSSIAN blue; ELECTRIC batteries; METAL-organic frameworks; ENERGY storage; CATHODES
- Publication
ChemSusChem, 2019, Vol 12, Issue 21, p4786
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.201902013