Quantum-Size FeS2 with Delocalized Electronic Regions Enable High-Performance Sodium-Ion Batteries Across Wide Temperatures
Quantum-scaled FeS 2 induces delocalized electronic regions, effectively reducing electrostatic potential barriers and accelerating Na + diffusion kinetics. The free charge accumulation regions were formed by edge mismatched atoms, activating numerous electrochemically sites to enable high-capacity Na + storage and ultrafast-ion transport across wide temperature range (−35 to 65 °C). The FeS 2 QD/MXene anode delivers superior wide-temperature capacity of 255.2 mAh g −1 (−35 °C) and 424.9 mAh g −1 (65 °C) at 0.1 A g −1 . The FeS 2 QD/MXene//NVP cell achieves a record energy density of 162.4 Wh kg⁻ 1 at − 35 °C.
研究领域:
材料科学
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电化学
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能源存储
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纳米科技
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固态物理
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先进电池技术
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产品关联
DOI
PubMed
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