Oxygen Functional Groups Regulating Sulfur Distribution in Carbon Micropores to Enhance Solid-Phase Conversion Reactions for Lithium–Sulfur Batteries DOI
Luna Yoshida, Takashi Hakari, Yukiko Matsui

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 5, 2025

The performance of lithium-sulfur (Li-S) batteries is determined by the cathode, which to a large extent affected low electrical conductivity S and dissolution lithium polysulfides (Li2Sx). confinement within microporous C promising method address these challenges. introduction O-containing functional groups inside micropores improves capacity for solid-phase conversion in Li-S batteries. However, mechanism behind this enhanced performance, particularly role on pores, remains unclear. In study, we investigate effect and/or Li2Sx micropores, focusing their impact electrochemical efficiency suppression polysulfide migration. Electrochemical impedance spectroscopy measurements show that accelerate charge transfer reactions Li+ ion diffusion. Cross-sectional scanning transmission electron microscopy-electron energy loss S-C composites reveals that, without groups, migrate localize inner edge carbon host during cycling. contrast, presence pores maintains uniform distribution explaining improved conclusion, paper proposes new design cathode high-performance For first time, experimental evidence provided confirm whereby into enhances lowering resistance preventing These modifications improve offer insights developing more effective cathodes advance commercialization

Язык: Английский

Oxygen Functional Groups Regulating Sulfur Distribution in Carbon Micropores to Enhance Solid-Phase Conversion Reactions for Lithium–Sulfur Batteries DOI
Luna Yoshida, Takashi Hakari, Yukiko Matsui

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 5, 2025

The performance of lithium-sulfur (Li-S) batteries is determined by the cathode, which to a large extent affected low electrical conductivity S and dissolution lithium polysulfides (Li2Sx). confinement within microporous C promising method address these challenges. introduction O-containing functional groups inside micropores improves capacity for solid-phase conversion in Li-S batteries. However, mechanism behind this enhanced performance, particularly role on pores, remains unclear. In study, we investigate effect and/or Li2Sx micropores, focusing their impact electrochemical efficiency suppression polysulfide migration. Electrochemical impedance spectroscopy measurements show that accelerate charge transfer reactions Li+ ion diffusion. Cross-sectional scanning transmission electron microscopy-electron energy loss S-C composites reveals that, without groups, migrate localize inner edge carbon host during cycling. contrast, presence pores maintains uniform distribution explaining improved conclusion, paper proposes new design cathode high-performance For first time, experimental evidence provided confirm whereby into enhances lowering resistance preventing These modifications improve offer insights developing more effective cathodes advance commercialization

Язык: Английский

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