Graphite-induced interface regulation in hard carbon for high-performance sodium-ion storage

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2026-10-05 DOI:10.1063/5.0356390

Zihan Yang,Zheng Hu,Le Chen,Shan Yin,Wentao Zhang,Xusheng Wang,Wenjie Mai,Jinliang Li

引用次数: 0

Abstract

In this work, we propose a graphite-induced interface strategy, in which pre-carbonized coconut shell carbon is wrapped with graphite paper and then carbonized. This process induces ordered rearrangement of carbon atoms on the hard carbon surface, forming ion transport channels composed of graphitic domains. These channels lower the kinetic barrier for Na+ entry into the internal closed pores, thereby converting inaccessible closed pores into accessible ones. The designed hard carbon achieves a high specific capacity of 359.64 mAh g−1 at 30 mA g−1, with a plateau contribution of 215.08 mAh g−1 and an excellent initial Coulombic efficiency of 91.21%.

查看原文本刊更多论文

高性能钠离子存储硬碳中石墨诱导的界面调节

在这项工作中，我们提出了一种石墨诱导界面策略，即用石墨纸包裹预碳化的椰子壳碳，然后进行碳化。该过程诱导碳原子在硬碳表面有序重排，形成由石墨畴组成的离子传输通道。这些通道降低了Na+进入内部封闭孔隙的动力学屏障，从而将不可进入的封闭孔隙转化为可进入的封闭孔隙。所设计的硬碳在30 mA g−1时获得了359.64 mAh g−1的高比容量，平台贡献为215.08 mAh g−1，初始库仑效率为91.21%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.