Perovskite (ACuF3) to double perovskite (A3CuF6) (A = K, Rb) transformation by a simple shaking procedure with hydrogen peroxide

Saroj, Sanjay Kumar; Singh, Poonam; Nagarajan, Rajamani

doi:10.1016/j.solidstatesciences.2018.07.011

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Its FT-IR spectrum also reveals the stretching vibration of Cu-F bonds at 486 cm −1 . [38,39] According to the XPS F1s spectra of the CuF 2 /CF x composites, the proportion of perfluorinated -CF 2 / CF 3 decreased as the CuF 2 content increased, whereas by contrast, the proportion of semi-ionic (C x F) n increased. Furthermore, the peak ascribed to Cu-F bonds in the CuF 2 /CF x composites gradually shifted to positions with higher bonding energies as the CF x content was increased, which probably indicates charge redistribution at the interface of CF x and CuF 2 .…”

Section: Resultsmentioning

confidence: 99%

Interface‐Structure‐Modulated CuF₂/CF_x Composites for High‐Performance Lithium Primary Batteries

Sun

Peng

Kong

et al. 2022

Energy & Environ Materials

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Lithium primary batteries are widely used in various fields where high energy densities and long storage times are in demand. However, studies on lithium primary batteries are currently focused on the gravimetric energy densities of active materials and rarely account for the volumetric energy requirements of unmanned devices. Herein, CuF2/CFx composites are prepared via planetary ball milling (PBM) to improve the volumetric energy densities of lithium primary batteries using the high mass density of CuF2, achieving a maximum volumetric energy density of 4163.40 Wh L−1. The CuF2/CFx hybrid cathodes exhibit three distinct discharge plateaus rather than simple combinations of the discharge curves of their components. This phenomenon is caused by charge redistribution and lattice modulation on the contact surfaces of CuF2 and CFx during PBM, which change the valence state of Cu and modify the electronic structures of the composites. As a result, CuF2/CFx hybrid cathodes exhibit unique discharge behaviors and improved rate capabilities, delivering a maximum power density of 11.16 kW kg−1 (25.56 kW L−1). Therefore, it is a promising strategy to further improve the comprehensive performance of lithium primary batteries through the use of interfacial optimization among different fluoride cathodes.

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Section: Resultsmentioning

confidence: 99%

Interface‐Structure‐Modulated CuF₂/CF_x Composites for High‐Performance Lithium Primary Batteries

Sun

Peng

Kong

et al. 2022

Energy & Environ Materials

View full text Add to dashboard Cite

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Notizen aus der Chemie

Beemelmanns¹,

Delaittre²,

Heine³

et al. 2018

Nachr Chem

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Perovskite (ACuF3) to double perovskite (A3CuF6) (A = K, Rb) transformation by a simple shaking procedure with hydrogen peroxide

Cited by 2 publications

References 38 publications

Interface‐Structure‐Modulated CuF₂/CF_x Composites for High‐Performance Lithium Primary Batteries

Interface‐Structure‐Modulated CuF₂/CF_x Composites for High‐Performance Lithium Primary Batteries

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Perovskite (ACuF3) to double perovskite (A3CuF6) (A = K, Rb) transformation by a simple shaking procedure with hydrogen peroxide

Cited by 2 publications

References 38 publications

Interface‐Structure‐Modulated CuF2/CFx Composites for High‐Performance Lithium Primary Batteries

Interface‐Structure‐Modulated CuF2/CFx Composites for High‐Performance Lithium Primary Batteries

Notizen aus der Chemie

Contact Info

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About

Interface‐Structure‐Modulated CuF₂/CF_x Composites for High‐Performance Lithium Primary Batteries

Interface‐Structure‐Modulated CuF₂/CF_x Composites for High‐Performance Lithium Primary Batteries