Sodium storage and capacity retention behavior derived from high-spin/low-spin Fe redox reaction in monoclinic Prussian blue based on operando Mössbauer characterization

Wang, Zinan; Sougrati, Moulay Tahar; He, Yawen; Pham, Phuong Nam Le; Xu, Wei; Iadecola, Antonella; Ge, Rile; Zhou, Wenhui; Zheng, Qi; Li, Xianfeng; Wang, Junhu

doi:10.1016/j.nanoen.2023.108256

Cited by 47 publications

(19 citation statements)

References 46 publications

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“…[123] In addition to the use of binder to generate stable CEI, citric acid (CA) (C 6 H 8 O 7 ) can be introduced as a carboxylic acid source to the surface of a PB material to inhibit the thick growth of CEI, due to the presence of high spin iron (Fe HS ) ions on the surface of PB compared to other cathode materials. [124] Lim et al used this property by introducing CA during their experiments to modulate the [121] Copyright 2023, The Authors, published by Springer Nature. [122] Copyright 2019, Elsevier.…”

Section: Cei On the Surface Of Prussian Blue Cathode Materialsmentioning

confidence: 99%

CEI Optimization: Enable the High Capacity and Reversible Sodium‐Ion Batteries for Future Massive Energy Storage

Han,

Liu,

et al. 2023

Adv Energy and Sustain Res

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Sodium‐ion batteries (SIBs) have attracted attention due to their potential applications for future energy storage devices. Despite significant attempts to improve the core electrode materials, only some work has been conducted on the chemistry of the interface between the electrolytes and essential electrode materials. Therefore, the different cathode–electrolyte interfaces (CEIs) that form between various cathode materials and liquid electrolytes for SIBs are briefly reviewed, and the requirements of CEI performance in low‐temperature SIBs. Modifying the cathode materials and electrolyte formulas offers an efficient strategy for CEI enhancement. The summary and analysis, given in this article, may serve as a reference for the development of better sodium‐ion batteries.

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Section: Cei On the Surface Of Prussian Blue Cathode Materialsmentioning

confidence: 99%

CEI Optimization: Enable the High Capacity and Reversible Sodium‐Ion Batteries for Future Massive Energy Storage

Han,

Liu,

et al. 2023

Adv Energy and Sustain Res

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“…The singlet represents low-spin Fe 2+ ( S = 0) ions that are positioned within a symmetrical octahedral coordination sphere consisting of CN ligands, while the doublet represents low-spin Fe 3+ ( S = 1/2) ions . In the initial MnHCF, we can see the presence of Fe 2+ ions exclusively in the Fe(CN) 6 – form . The cycled MnHCF demonstrates an increase in the proportion of Fe 3+ ions, indicative of the formation of incompletely reduced high-valence Fe due to Mn dissolution.…”

mentioning

confidence: 94%

“…− form. 49 The cycled MnHCF demonstrates an increase in the proportion of Fe 3+ ions, indicative of the formation of incompletely reduced high-valence Fe due to Mn dissolution. The initial Mn@FeHCF exhibits a significant increase in the weight percentage of Fe 3+ as a consequence of the formation of shell FeHCF and the partial substitution of Mn 2+ with Fe 3+ in the two-phase boundary.…”

mentioning

confidence: 95%

Epitaxial Core–Shell MnFe Prussian Blue Cathode for Highly Stable Aqueous Zinc Batteries

Yang,

Liang,

et al. 2023

ACS Energy Lett.

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The high-safety aqueous zinc battery is regarded as a desirable alternative to lithium-ion batteries; however, it still lacks sufficient cycling capability. The primary impediment is structural distortion of cathode materials in aqueous electrolytes. Here we propose an epitaxial Fe- on Mn-hexacyanoferrate to construct a core–shell double-atom-redox Prussian blue analogue (PBA). The shell Fe-PBA shows a small volumetric change, inclined toward surface amorphization upon ion-insertion, leading to the low-strain core–double shell structure. The in situ surface reorganization effectively suppresses Jahn–Teller distortion and prevents Mn dissolution into electrolyte in the core Mn-PBA. Consequently, the cathode design that facilitates high-voltage full cells (over 1.8 V vs Zn2+/Zn) enables a high discharge capacity of 166 and 117 mAh g–1 and a capacity retention of 72.4% and 83.9% over 400 and 4800 cycles at 0.1 and 2 A g–1, respectively. A pouch cell operates successfully under harsh conditions from −30 to 60 °C.

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“…With the increasing demands for large scale energy storage system in pursing the carbon neutralization society, sodium‐ion batteries (SIBs) have emerged as an appealing alternative to the state‐of‐art lithium‐ion batteries (LIBs) because of the low‐cost and naturally abundant sodium resources. [ 1–4 ] Cathode materials, such as layered transition metal oxides, [ 5–7 ] Prussian blue analogs, [ 8–11 ] polyanionic compounds and etc., [ 12–14 ] play a critical role in realizing the high energy density and long life‐span SIBs. Owing to the merits of iron in abundance, cost, environmental friendliness, and the successful commercialization of LiFePO 4 cathode material for LIBs, iron‐based phosphates have raised considerable attention in the development of future low‐cost SIBs.…”

Section: Introductionmentioning

confidence: 99%

Activating the Inert Na1 Sites in Na₂FePO₄F Toward High Performance Sodium Storage

Huang

Xia

Hao

et al. 2023

Adv Funct Materials

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Na2FePO4F, an iron‐based fluorophosphate with facile 2D sodium ion channels, is considered as a promising cathode material for sodium‐ion batteries because of low cost, resource abundance, and nontoxicity. However, its application is considerably restricted by the limited intrinsic electronic conductivity and specific capacity. Herein, a doping strategy represented by Cu2+ is proposed to boost the electrochemical performance, attributed to the derivation of a new active Na3 site originated from the inert Na1 site and the band gap reduction due to the d‐orbital hybridization. Consequently, the as‐obtained Na2Fe0.95Cu0.05PO4F/C composite can deliver an excellent rate capacity of 74 mAh g⁻1 at 20 C and a decent specific capacity of 119 mAh g⁻1 at 0.1 C, which is superior to the previously reported Na2FePO4F‐based cathode materials. This study sheds new light on developing high performance fluorophosphates cathode materials via regulating the Na site and electronic structure.

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Sodium storage and capacity retention behavior derived from high-spin/low-spin Fe redox reaction in monoclinic Prussian blue based on operando Mössbauer characterization

Cited by 47 publications

References 46 publications

CEI Optimization: Enable the High Capacity and Reversible Sodium‐Ion Batteries for Future Massive Energy Storage

CEI Optimization: Enable the High Capacity and Reversible Sodium‐Ion Batteries for Future Massive Energy Storage

Epitaxial Core–Shell MnFe Prussian Blue Cathode for Highly Stable Aqueous Zinc Batteries

Activating the Inert Na1 Sites in Na₂FePO₄F Toward High Performance Sodium Storage

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Sodium storage and capacity retention behavior derived from high-spin/low-spin Fe redox reaction in monoclinic Prussian blue based on operando Mössbauer characterization

Cited by 47 publications

References 46 publications

CEI Optimization: Enable the High Capacity and Reversible Sodium‐Ion Batteries for Future Massive Energy Storage

CEI Optimization: Enable the High Capacity and Reversible Sodium‐Ion Batteries for Future Massive Energy Storage

Epitaxial Core–Shell MnFe Prussian Blue Cathode for Highly Stable Aqueous Zinc Batteries

Activating the Inert Na1 Sites in Na2FePO4F Toward High Performance Sodium Storage

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Activating the Inert Na1 Sites in Na₂FePO₄F Toward High Performance Sodium Storage