Synergy of Cu-foam/Sb<sub>2</sub>O<sub>3</sub>/rGO for stable potassium anodes of high-rate and low-temperature potassium metal batteries

Qi, Jing; Lin, Chengkai; Deng, Shuqi; Zuo, Yinze; Zheng, Hui; Jiao, Xuechao; Yan, Wei; Zhang, Jiujun

doi:10.1039/d3ta06919b

Cited by 5 publications

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Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Du,

Zhou,

et al. 2024

Chin. J. Chem.

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Comprehensive SummaryPotassium ion batteries (PIBs) are of great interest owing to the low cost and abundance of potassium resources, while the sluggish diffusion kinetics of K+ in the electrode materials severely impede their practical applications. Here, self‐hybridized BiOCl0.5Br0.5 with a floral structure is assembled and used as anode for PIBs. Based on the systematic theoretical calculation and experimental analysis, the unbalance of charge distribution between Cl and Br atoms leads to an enhanced built‐in electric field and a larger interlayer spacing, which can enhance the K+ diffusion. Furthermore, the K+ insertion causes the energetic evolution of polar states in the BiOCl0.5Br0.5 crystal framework, where the dynamic correlation between the K+ and the halogen atoms leads to the formation of hole‐like polarons, which significantly improves the K+ diffusion and reaction kinetics during the charging/discharging process, giving important implications to design the electrode materials with high electrochemical performance by engineering the interaction between electronic structure and interface. Therefore, the BiOCl0.5Br0.5 anode obtains an excellent performance of 171 mAh·g–1 at 1 A·g–1 over 2000 cycles in PIBs.

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Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Du,

Zhou,

et al. 2024

Chin. J. Chem.

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Recent advances in antimony-based anode materials for potassium-ion batteries: material selection, structural design and storage mechanisms

Cheng,

Quan,

2024

Chinese Chemical Letters

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A flexible and potassiphilic porous interconnected mediator for dendrite-free and stable potassium metal anodes

Song,

Li,

Liao

et al. 2024

Energy Storage Materials

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Synergy of Cu-foam/Sb₂O₃/rGO for stable potassium anodes of high-rate and low-temperature potassium metal batteries

Abstract: Potassium (K) with richer abundance than lithium has been explored as the anode material in K metal batteries (KMBs) for possible application in large-scale energy storage. However, the instable solid...

Cited by 5 publications

References 50 publications

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Recent advances in antimony-based anode materials for potassium-ion batteries: material selection, structural design and storage mechanisms

A flexible and potassiphilic porous interconnected mediator for dendrite-free and stable potassium metal anodes

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Synergy of Cu-foam/Sb2O3/rGO for stable potassium anodes of high-rate and low-temperature potassium metal batteries

Abstract: Potassium (K) with richer abundance than lithium has been explored as the anode material in K metal batteries (KMBs) for possible application in large-scale energy storage. However, the instable solid...

Cited by 5 publications

References 50 publications

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries†

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries†

Recent advances in antimony-based anode materials for potassium-ion batteries: material selection, structural design and storage mechanisms

A flexible and potassiphilic porous interconnected mediator for dendrite-free and stable potassium metal anodes

Contact Info

Product

Resources

About

Synergy of Cu-foam/Sb₂O₃/rGO for stable potassium anodes of high-rate and low-temperature potassium metal batteries

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†