Homogeneous Adsorption of Multiple Potassiation Products of Red Phosphorus Anode toward Stable Potassium Storage

Wang, Feiyue; Yang, Tong; Feng, Wencong; Ren, Jingke; Chen, Xingbao; Cheng, Chaojie; Luo, Wen; Liao, Xiaobin; Mai, Liqiang

doi:10.1021/acsnano.4c04344

Cited by 3 publications

References 42 publications

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Fluorine Doping Modulating Pore Structure and Adsorption Capability of Carbon Matrix Boosting Potassium Storage Performance of Red Phosphorus Anode

Wang,

Zhang,

et al. 2024

Adv Funct Materials

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The application of alloying‐typed red phosphorus (red P) anode in potassium‐ion batteries (KIBs) with ultra‐high theoretical capacity is hindered by the limited capacity and fast capacity decay due to poor electronic conductivity and huge volume change. Herein, a facile and efficient strategy of fluorine (F) doping is innovatively developed to modulate the pore structure of carbon matrix (F‐CNS) to encapsulate red P with enhanced potassium storage capability. Theoretical calculations reveal that F doping induces additional defects within the carbon layer, which facilitates P4 molecules embedding into the F‐doping‐induced micropores, enhances the adsorption ability toward K atoms and P4 molecules, and improves electrochemical kinetics assisted with more charge transfer obtained from the electron density difference, thus enabling robust potassium storage capability for such unique Red P@F‐CNS anode. Accordingly, the Red P@F‐CNS anode demonstrates outstanding cycling stability (90% capacity retention after 800 cycles at 2A g−1), and the potassium‐ion full cell (Red P@F‐CNS//KFeHCF) exhibits exceptional long‐term cycling performance (129 mAh g−1 after 2500 cycles at 5 A g−1 with only 0.014% decay per cycle). In situ characterizations confirm the superior structural integrity of the carbon‐based matrix. This study offers a rational design principle for engineering high‐performance carbon‐supported alloying‐typed anodes for KIBs.

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Fluorine Doping Modulating Pore Structure and Adsorption Capability of Carbon Matrix Boosting Potassium Storage Performance of Red Phosphorus Anode

Wang,

Zhang,

et al. 2024

Adv Funct Materials

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Topological Defect‐Regulated Porous Carbon Nanoribbon for High‐Performance Potassium‐Ion Batteries

Zhou,

Zhu,

Liu

et al. 2024

Small

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Potassium‐ion batteries (PIBs) using carbonaceous anode materials have attracted a great deal of research interest. However, the large atomic size of potassium ions inevitably leads to huge volume expansion and the collapse of anodes during intercalation, which greatly hinders rate performance and cycling life. In this work, carbon nanotube‐derived porous N‐doped carbon nanoribbon (CNR) bundles are designed as an anode for PIBs. These CNR materials are in rich defects which provide fast channels for charge transport and abundant active sites for potassium ion storage. The CNR materials exhibit a maximum capacity of 441.4 mA h g−1 at a current density of 0.2 A g−1 after 200 cycles as well as a highly reversible capacity of 263.6 mA h g−1 at a current density of 5.0 A g−1 even after 1000 cycles. This work provides guidance for the structure design of nanoribbon materials for high‐performance PIBs.

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Miraculous Iodine Catalyst Enables Safe and High-Performance Red Phosphorus/Carbon Anodes for Sodium-Ion Batteries

Song,

Wu,

Tian

et al. 2024

Preprint

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Homogeneous Adsorption of Multiple Potassiation Products of Red Phosphorus Anode toward Stable Potassium Storage

Cited by 3 publications

References 42 publications

Fluorine Doping Modulating Pore Structure and Adsorption Capability of Carbon Matrix Boosting Potassium Storage Performance of Red Phosphorus Anode

Fluorine Doping Modulating Pore Structure and Adsorption Capability of Carbon Matrix Boosting Potassium Storage Performance of Red Phosphorus Anode

Topological Defect‐Regulated Porous Carbon Nanoribbon for High‐Performance Potassium‐Ion Batteries

Miraculous Iodine Catalyst Enables Safe and High-Performance Red Phosphorus/Carbon Anodes for Sodium-Ion Batteries

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