Design of cross-linked hard carbon with high initial coulombic efficiency for sodium-ion batteries anode

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2024-09-28 DOI:10.1016/j.cplett.2024.141651

Xue Li , Yating Zhang , Keke Li , Yanping Hu , Youyu Zhu , Yicheng Wang , Yuan Liu

引用次数: 0

Abstract

Cross-linked hard carbon materials (SFC_zGLC₁) were prepared from Shenfu bituminous coal (SFC) and glucose (GLC) via a one-step carbonization method. The relationship between the microstructure and Na⁺ storage behavior was explored. The initial coulombic efficiency (ICE) was related to surface defects. Owing to abundant porous structure and low defects, SFC₃GLC₁ delivered the highest reversible capacity of 413.1 mAh/g at 0.02 A/g with ICE ∼84 % and excellent cycling stability (89.4 % capacity retention over 200 cycles). This work provides a facile route to develop high-performance, low-cost carbon-based anodes for next-generation sodium-ion batteries (SIBs).

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为钠离子电池阳极设计具有高初始库仑效率的交联硬碳

以神府烟煤（SFC）和葡萄糖（GLC）为原料，通过一步碳化法制备了交联硬碳材料（SFCzGLC1）。探讨了其微观结构与 Na+ 储存行为之间的关系。初始库仑效率（ICE）与表面缺陷有关。由于具有丰富的多孔结构和较低的缺陷，SFC3GLC1 在 0.02 A/g 条件下可提供最高的可逆容量（413.1 mAh/g），ICE ∼ 84 %，并具有优异的循环稳定性（200 次循环的容量保持率为 89.4 %）。这项工作为开发用于下一代钠离子电池（SIB）的高性能、低成本碳基阳极提供了一条便捷的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.