Fluorinated N,P co-doped biomass carbon with high-rate performance as cathode material for lithium/fluorinated carbon battery

Yan, Ke; Zou, Yan; Bao, Liang-Xue; Xia, Qi; Meng, Ling-Yi; Lin, Hai-Chen; Chen, Hui-Xin; Yue, Hong-Jun

doi:10.1007/s12598-024-02894-4

Rare Met.

2024

DOI: 10.1007/s12598-024-02894-4

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Fluorinated N,P co-doped biomass carbon with high-rate performance as cathode material for lithium/fluorinated carbon battery

Ke Yan,

Yan Zou,

Liang-Xue Bao

et al.

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Cited by 3 publications

References 56 publications

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Enhanced Li/CFx primary battery energy density by relay discharge and the use of difunctional electrolytes

Lai,

Yang,

Yao

et al. 2025

Electrochimica Acta

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Enhanced Li/CFx primary battery energy density by relay discharge and the use of difunctional electrolytes

Lai,

Yang,

Yao

et al. 2025

Electrochimica Acta

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Core–shell cobalt-iron@N-doped carbon: A high-performance cathode material for lithium–sulfur batteries

Zhang,

Feng

et al. 2024

The Journal of Chemical Physics

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Lithium–sulfur batteries hold great promise as energy storage systems, but the shuttle effect of lithium polysulfides (LiPS) and large volume variation limit their capacity and cycle life. We have developed CoFe alloy wrapped in N-doped porous carbon spheres (e-CF@NC) with a core–shell structure through simple copolymerization and pyrolysis. The nitrogen-doped porous carbon shell provides electron and ion transport channels and more active sites for electrolyte ion adsorption. The high chemically stable carbon can limit the segregation of polysulfides, further improving the battery cycling stability. Besides, the inside CoFe alloy particles catalyze the conversion between LiPS and Li2S, speeding up reaction kinetics and reducing solvation of active sites. Consequently, lithium–sulfur batteries with e-CF@NC-2 as the cathode display a high initial specific capacity of 1146 mA h g−1 at 0.1 C, excellent rate performance (891 mA h g−1 at 1 C, 741 mA h g−1 at 2 C), and satisfied cycle stability (average capacity decay rate of 0.033% per cycle at 1 C for 300 cycles), demonstrating significant application potential.

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Fluorinated Hollow Porous Carbon Spheres as High-Performance Cathode Material for Primary Battery

Zou,

Yan,

Bao

et al. 2024

Batteries

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Fluorinated carbon cathode materials have extremely high theoretical specific energy among known cathode materials of lithium primary batteries. Nevertheless, current fluorinated carbon cannot meet the performance demands of future applications due to the rate performance. This work innovatively applies hollow carbon spheres with a porous structure as carbon sources to prepare fluorinated hollow porous carbon spheres (FHPCS) with high energy density and power density. The porous structure provides more reaction sites for the fluorination process and also shortens the diffusion path of lithium ions during the discharge. Additionally, the hollow porous structure offers more interfacial contact areas and reduces volumetric expansion during discharge reactions. The Li/CFx primary battery has a maximum specific energy of 2007 Wh kg−1 and a maximum power density of 30,400 W kg−1 and can have a capacity retention rate of 80.8% at a current density of 16 A g−1. In addition, FHPCS also has the highest specific energy of 1999 Wh kg−1 and 1711 Wh kg−1 in Na/CFx and K/CFx primary batteries, respectively. The diffusion efficiency of an alkali metal ion is analyzed by the different discharge depths with electrochemical impedance spectroscopy and galvanostatic intermittent titration technique. This effort introduces a new high-performance fluorinated carbon featuring a hollow porous structure and puts forward an innovative approach to designing fluorinated carbon materials.

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Fluorinated N,P co-doped biomass carbon with high-rate performance as cathode material for lithium/fluorinated carbon battery

Cited by 3 publications

References 56 publications

Enhanced Li/CFx primary battery energy density by relay discharge and the use of difunctional electrolytes

Enhanced Li/CFx primary battery energy density by relay discharge and the use of difunctional electrolytes

Core–shell cobalt-iron@N-doped carbon: A high-performance cathode material for lithium–sulfur batteries

Fluorinated Hollow Porous Carbon Spheres as High-Performance Cathode Material for Primary Battery

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