高能钠离子电池硬碳阳极封闭孔的全面认识。

IF 36.3 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-07-07 DOI:10.1007/s40820-025-01833-x

Siyang Gan, Yujie Huang, Ningyun Hong, Yinghao Zhang, Bo Xiong, Zhi Zheng, Zidong He, Shengrui Gao, Wentao Deng, Guoqiang Zou, Hongshuai Hou, Xiaobo Ji

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引用次数: 0

摘要

硬碳（HC）由于其高成本效益和优异的综合性能，被认为是钠离子电池（sib）最有前途的负极材料。然而，HC的非晶态和复杂的微观结构给阐明结构-性能关系带来了重大挑战，这导致了对闭孔内在特征的持续误解。不合理的闭孔构造方法必然导致高原承载力下降，严重制约了HC在高能量密度场景下的实际应用。本文对封闭孔隙的概念框架和形成机制进行了系统的阐述，为其结构特征和形成途径提供了重要的见解。随后，通过将晶格参数与缺陷构型相关联，建立了控制脱溶动力学和钠储存行为的结构-性能关系。此外，结构工程的开创性进展被严格地综合起来，以建立HC中封闭孔隙的合理调节的基本设计原则。必须强调的是，采用分子水平的观点，结合协同动力学/热力学方法，对于理解和控制开孔到闭孔的转化过程至关重要。这些创新的观点是战略性的，旨在加速HC的商业化，从而促进sib的可持续和高效发展。

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Comprehensive Understanding of Closed Pores in Hard Carbon Anode for High-Energy Sodium-Ion Batteries

Highlights

This review summarizes the latest advances in closed pore structures within hard carbon anodes for sodium-ion batteries, establishing a conceptual framework and origination mechanisms under a unified perspective of active sites.
The influence of closed pore characteristics on sodium storage behavior is systematically explored, with design principles proposed for directional regulation of pore structures.
Future research directions are highlighted, integrating advanced modification strategies with molecular-level design and dynamic/thermodynamic hybrid analyses for performance optimization.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.