Atomic‐Scale Interface Engineering for Robust Sodium‐Ion Battery Anodes with Superior Stability and High Energy Density DOI

Zhi Huo,

Han Fang,

S. Lin

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 6, 2025

Abstract In the quest for high‐performance sodium‐ion batteries, enduring dilemma of enhancing interfacial kinetics while preserving structural integrity in conventional hard carbon anodes has remained a formidable barrier. This study presents groundbreaking molten salt‐assisted synthesis manganese single atoms anchored within hierarchically porous nanosheets (Mn‐PHCS) with unique asymmetric Mn–O 3 –N configuration. Through atomic‐level interface engineering, local electronic architecture is intricately modulated, expediting charge transfer and fostering rapid pseudocapacitive reactions. Density functional theory calculations further validate that active centers refine electrode–electrolyte interface, catalyze controlled NaPF 6 decomposition, facilitate formation an inorganic‐rich (NaF‐dominated) solid‐electrolyte interphase layer. The meticulous atomic configuration Mn‐PHCS results impressive reversible capacity 419 mAh g −1 , robust retention 94.3% after 1000 cycles at 1 A extraordinary cycle life exceeding 7500 5 . full cell, when paired Na V 2 (PO 4 ) cathode, achieves compelling energy density 269.2 Wh kg work not only elucidates intricate relationship between atomic‐scale engineering electrochemical performance but also sets forth transformative principle development next‐generation storage systems.

Язык: Английский

Metal valence state-regulated Li bond chemistry for efficient lithium–sulfur battery catalysis: A case study of cupric and cuprous oxides DOI
Haobo Zhang,

Bobo Zou,

Xian Zhong

и другие.

Particuology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1
Activating Transition-Metal Oxides through In Situ Regulation of Lower Hubbard Band for Catalytic Conversion of Lithium Polysulfides DOI
Pan Zeng, Yong‐Sheng Hu, Bin Su

и другие.

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 30, 2025

Catalytic conversion of lithium polysulfides (LiPSs) is regarded as an effective avenue to tackle the shuttle effect lithium-sulfur (Li-S) batteries, especially based upon transition-metal oxides (TMOs). However, activity origin and corresponding mechanistic insights into such catalytic systems remain elusive. Herein, activated state associated with lower Hubbard band (LHB) transition proposed elucidate TMOs by taking Mn3O4 a model electrocatalyst. Specifically, broadening LHB width, upshift position, orbital rearrangement LHB, triggered in situ substitution O atoms S LiPSs under working conditions, synergistically enable fast electron transfer modulate adsorption capability moderate level. Benefiting from these advantages, electrocatalyst converted torpid for expediting LiPS conversion. Eventually, Li-S batteries assembled deliver excellent rate performance over 6 C outstanding cycling stability 1000 cycles. Moreover, Ah-scale pouch cell constructed delivers notable energy density 388.1 W h kg-1. Our work offers promising pathway on regulation designing high-performance electrocatalysts beyond.

Язык: Английский

Процитировано

1
Atomic‐Scale Interface Engineering for Robust Sodium‐Ion Battery Anodes with Superior Stability and High Energy Density DOI

Zhi Huo,

Han Fang,

S. Lin

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 6, 2025

Abstract In the quest for high‐performance sodium‐ion batteries, enduring dilemma of enhancing interfacial kinetics while preserving structural integrity in conventional hard carbon anodes has remained a formidable barrier. This study presents groundbreaking molten salt‐assisted synthesis manganese single atoms anchored within hierarchically porous nanosheets (Mn‐PHCS) with unique asymmetric Mn–O 3 –N configuration. Through atomic‐level interface engineering, local electronic architecture is intricately modulated, expediting charge transfer and fostering rapid pseudocapacitive reactions. Density functional theory calculations further validate that active centers refine electrode–electrolyte interface, catalyze controlled NaPF 6 decomposition, facilitate formation an inorganic‐rich (NaF‐dominated) solid‐electrolyte interphase layer. The meticulous atomic configuration Mn‐PHCS results impressive reversible capacity 419 mAh g −1 , robust retention 94.3% after 1000 cycles at 1 A extraordinary cycle life exceeding 7500 5 . full cell, when paired Na V 2 (PO 4 ) cathode, achieves compelling energy density 269.2 Wh kg work not only elucidates intricate relationship between atomic‐scale engineering electrochemical performance but also sets forth transformative principle development next‐generation storage systems.

Язык: Английский

Процитировано

0