Concurrent Multifactorial Engineering of Closed-Pore Hard Carbon Architectures with Optimized Crystallographic Spacing for Advanced Sodium Storage

Опубликована: Янв. 1, 2025

Язык: Английский

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Reversible Na15Sn4 alloy compensation for hard carbon anodes to enhance initial coulombic efficiency in sodium-ion full cells†

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

An effective sodium compensation strategy utilizes a Na 15 Sn 4 alloy as reversible + reservoir, which de-alloy at low potentials to offset initial irreversible losses in hard carbon anodes.

Язык: Английский

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Enhancing Structural Integrity With Stress‐Resilient Carbon for Stable Potassium‐Ion Storage

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 5, 2025

Abstract While graphite anodes hold promise for potassium‐ion batteries (PIBs), their practical implementation faces critical challenges stemming from mechanical degradation and interfacial compatibility in carbonate ester electrolytes. Herein, a hierarchical porous carbon architecture derived renewable biomass precursors with stress‐resilient characteristics are developed to enhance structural integrity cyclability PIBs. The synergistic combination of homogeneous shell frameworks enables the anode form an integrated solid electrolyte interphase uniform stress distribution ester‐based electrolyte. optimized delivers high reversible capacity 170.3 mAh g −1 at 200 mA , retention 84.0% after 600 cycles. Remarkably, full cells integrating Mn‐based layered oxides Prussian blue analogue cathodes demonstrate 70.1% 70.8% This work establishes biomass‐to‐device engineering paradigm sustainable energy storage systems, offering fundamental insights into interface‐structure‐property relationships alkali‐metal ion batteries.

Язык: Английский

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From Sodium Storage Mechanism to Design of High-Capacity Carbon-Based Anode: A Review

Materials, Год журнала: 2025, Номер 18(10), С. 2248 - 2248

Опубликована: Май 13, 2025

Sodium-ion batteries (SIBs) have emerged as a viable alternative to lithium-ion technologies, with carbon-based anodes playing pivotal role in addressing key challenges of sodium storage. This review systematically examines hard carbon the premier anode material, elucidating its dual storage mechanisms: (1) sloping capacity (2.0-0.1 V vs. Na+/Na) from surface/defect adsorption and (2) plateau (<0.1 V) via closed-pore filling pseudo-graphitic intercalation. Through critical analysis recent advancements, we establish that optimized architectures delivering 300-400 mAh/g require precise coordination domains (d002 = 0.36-0.40 nm) <1 nm closed pores. ultimately provides design blueprint for next-generation anodes, proposing three research frontiers: machine learning-guided microstructure optimization, dynamic sodiation/desodiation control sub pores, (3) scalable manufacturing heteroatom-doped engineered domains. These advancements position enablers high-performance, cost-effective SIBs grid-scale energy applications.

Язык: Английский

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Preparation of mesoporous hard carbon anode materials by nitrogen doping of biomass to enhance the specific capacity of sodium ion adsorption

Journal of Electroanalytical Chemistry, Год журнала: 2025, Номер unknown, С. 119190 - 119190

Опубликована: Май 1, 2025

Язык: Английский

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