Application of a conversion electrode based on decomposition derivatives of Ag<sub>4</sub>[Fe(CN)<sub>6</sub>] for aqueous electrolyte batteries

Malchik, Fyodor; Maldybayev, Kaiyrgali; Kan, Tatyana; Kokhmetova, Saule; Kurbatov, Andrey; Galeyeva, Alina; Tubul, Nufar; Shpigel, Netanel; Djenizian, Thierry

doi:10.1039/d2ra00617k

Cited by 1 publication

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“…More pronounced is the appearance of a redox pair located around 1.2/0.9 V vs Zn/Zn 2+ in the Ag‐NP‐MXene cathode. These peaks are attributed to the conversion‐type redox reactions of the embedded Ag nanoparticles with the chloride anions: [ 46 ]

\begin{equation}{\mathrm{AgCl}} + {{{\mathrm{e}}}^ - } \rightleftharpoons {\mathrm{Ag}} + {\mathrm{1}}\,{\mathrm{C}}{{{\mathrm{l}}}^ - }\end{equation}

…”

Section: Resultsmentioning

confidence: 99%

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Super‐Stretchable and High‐Energy Micro‐Pseudocapacitors Based on MXene Embedded Ag Nanoparticles

Cao,

Zhu,

Chen

et al. 2024

Advanced Materials

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The advancement of aqueous micro‐supercapacitors offers an enticing prospect for a broad spectrum of applications, spanning from wearable electronics to micro‐robotics and sensors. Unfortunately, conventional micro‐supercapacitors are characterized by low capacity and slopy voltage profiles, limiting their energy density capabilities. To enhance the performance of these devices, the use of 2D MXene‐based compounds has recently been proposed. Apart from their capacitive contributions, these structures can be loaded with redox‐active nanowires which increase their energy density and stabilize their operation voltage. However, introducing rigid nanowires into MXene films typically leads to a significant decline in their mechanical properties, particularly in terms of flexibility. To overcome this issue, we demonstrate herein super stretchable micro‐pseudocapacitor electrodes composed of MXene nanosheets and in‐situ reconstructed Ag nanoparticles (Ag‐NP‐MXene) delivering high energy density, stable operation voltage of ∼1 V, and fast charging capabilities. Careful experimental analysis and theoretical simulations of the charging mechanism of the Ag‐NP‐MXene electrodes reveal a dual nature charge storage mechanism involving ad(de)sorption of ions and conversion reaction of Ag nanoparticles. The superior mechanical properties of synthesized films obtained through in‐situ construction of Ag‐NP‐MXene structure show an ultrastretchability, allowing the devices to provide stable voltage and energy output even at 100% elongation.This article is protected by copyright. All rights reserved

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\begin{equation}{\mathrm{AgCl}} + {{{\mathrm{e}}}^ - } \rightleftharpoons {\mathrm{Ag}} + {\mathrm{1}}\,{\mathrm{C}}{{{\mathrm{l}}}^ - }\end{equation}

…”

Section: Resultsmentioning

confidence: 99%

“…More pronounced is the appearance of a redox pair located around 1.2/0.9 V vs Zn/Zn 2+ in the Ag-NP-MXene cathode. These peaks are attributed to the conversion-type redox reactions of the embedded Ag nanoparticles with the chloride anions: [46] AgCl + e − ⇌ Ag + 1 Cl −…”

Section: Resultsmentioning

confidence: 99%

Super‐Stretchable and High‐Energy Micro‐Pseudocapacitors Based on MXene Embedded Ag Nanoparticles

Cao,

Zhu,

Chen

et al. 2024

Advanced Materials

Self Cite

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Application of a conversion electrode based on decomposition derivatives of Ag₄[Fe(CN)₆] for aqueous electrolyte batteries

Abstract: The lack of stable electrode materials for water-based electrolytes based on intercalation and conversion reaction mechanisms encourage scientists to design new or renovate existing materials with better cyclability, capacity, and cost-effectiveness.

Cited by 1 publication

References 24 publications

Super‐Stretchable and High‐Energy Micro‐Pseudocapacitors Based on MXene Embedded Ag Nanoparticles

Super‐Stretchable and High‐Energy Micro‐Pseudocapacitors Based on MXene Embedded Ag Nanoparticles

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Application of a conversion electrode based on decomposition derivatives of Ag4[Fe(CN)6] for aqueous electrolyte batteries

Abstract: The lack of stable electrode materials for water-based electrolytes based on intercalation and conversion reaction mechanisms encourage scientists to design new or renovate existing materials with better cyclability, capacity, and cost-effectiveness.

Cited by 1 publication

References 24 publications

Super‐Stretchable and High‐Energy Micro‐Pseudocapacitors Based on MXene Embedded Ag Nanoparticles

Super‐Stretchable and High‐Energy Micro‐Pseudocapacitors Based on MXene Embedded Ag Nanoparticles

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Application of a conversion electrode based on decomposition derivatives of Ag₄[Fe(CN)₆] for aqueous electrolyte batteries