Szczegóły publikacji
Opis bibliograficzny
Elevating the discharge plateau of prussian blue analogs through low-spin Fe redox induced intercalation pseudocapacitance / Jianguo Sun, Hualin Ye, Jin An Sam Oh, Anna PLEWA, Yao Sun, Tian Wu, Qiaomei Sun, Kaiyang Zeng, Li Lu // Energy Storage Materials ; ISSN 2405-8297. — 2021 — vol. 43, s. 182–189. — Bibliogr. s. 188–189, Abstr. — Publikacja dostępna online od: 2021-09-05
Autorzy (9)
- Sun Jianguo
- Ye Hualin
- Oh Jin An Sam
- AGHHanc Anna Florentyna
- Sun Yao
- Wu Tian
- Sun Qiaomei
- Zeng Kaiyang
- Lu Li
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 137105 |
|---|---|
| Data dodania do BaDAP | 2021-10-20 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ensm.2021.09.004 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Energy Storage Materials |
Abstract
Low-cost Prussian blue analogs (PBAs) have attracted great attentions as a group of promising cathodes for sodium-ion batteries (SIBs) due to their tailorable and open frameworks which endue the possibility of ultrahigh Na+ diffusion kinetics. Herein, a unique discharging plateau elevation was firstly determined in the iron hexacyanoferrate. The synergy between the crystal field and ligand field stabilization energy in the OH-coordinated Fe sites lowers the activation energy barrier of low-spin Fe, thus inducing the intercalation pseudocapacitance. Furthermore, we prove that the Na+ storage mechanism of high-spin Fe redox reaction features an ion–diffusion behavior while the low-spin Fe redox reaction shows a pseudocapacitance behavior. Benefitting from the improved ionic diffusivity in intercalation pseudocapacitance, the full cell achieves an outstanding rate performance and long-term cycling stability of over 3000 cycles at 500 mA g−1. It is expected that manipulating Fe redox kinetics of the PBAs through inducing special coordinated groups could be a new pathway towards the design of practical high-voltage SIBs.