Self‐Catalysis‐Graphitization Strategy Toward Coal‐Derived Graphitic Hierarchical Porous Carbon with Advanced Zn‐Ion Storage Capability and Ultrastability

IF 13 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Small Pub Date : 2025-07-22 DOI:10.1002/smll.202504629
Huan Liu, Lei Ding, Xiuli Huang, Lulu Wang, Long Kuai
{"title":"Self‐Catalysis‐Graphitization Strategy Toward Coal‐Derived Graphitic Hierarchical Porous Carbon with Advanced Zn‐Ion Storage Capability and Ultrastability","authors":"Huan Liu, Lei Ding, Xiuli Huang, Lulu Wang, Long Kuai","doi":"10.1002/smll.202504629","DOIUrl":null,"url":null,"abstract":"Based on dual carbon targets, it is a clean and efficient utilization to convert coal into high value‐added carbon materials for Zn‐ion hybrid supercapacitor (ZIHSC), coupling high energy density of batteries and high power output of supercapacitors. Herein, a one‐step self‐catalysis‐graphitization approach is developed to fabricate N/O/S co‐doped graphitic hierarchical porous carbon from bituminous coal by taking advantages of the intrinsic heteroatoms for self‐doping, the associated minerals for graphization and KOH activation for hierarchical porosity, contributing to abundant entrapments for Zn<jats:sup>2+</jats:sup> capture, express transfer pathway for fast kinetics and sturdy skeleton for long‐term duration and thereby endowing the coin‐type ZIHSC device an ultrahigh capacity of 229.8 mAh g<jats:sup>−1</jats:sup> at 0.1 A g<jats:sup>−1</jats:sup> with 110.7 mAh g<jats:sup>−1</jats:sup> conservation even at a 500‐fold amplified current density, the maximum energy density of 183.2 Wh kg<jats:sup>−1</jats:sup> and an outstanding stability of 99.3% over 100,000 cycles at 50 A g<jats:sup>−1</jats:sup>. Gratifyingly, the soft‐pack ZIHSC device still delivered a capacity of 141.2 mAh g<jats:sup>−1</jats:sup> at 0.1 A g<jats:sup>−1</jats:sup> and a energy density of 112.3 Wh kg<jats:sup>−1</jats:sup> for practicability. The quasi‐solid ZIHSC device also displayed a capacity of 144.7 mAh g<jats:sup>−1</jats:sup> at 0.1 A g<jats:sup>−1</jats:sup> with a energy density of 115.2 Wh kg<jats:sup>−1</jats:sup> plus excellent mechanical flexibility.","PeriodicalId":228,"journal":{"name":"Small","volume":"14 1","pages":""},"PeriodicalIF":13.0000,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/smll.202504629","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Based on dual carbon targets, it is a clean and efficient utilization to convert coal into high value‐added carbon materials for Zn‐ion hybrid supercapacitor (ZIHSC), coupling high energy density of batteries and high power output of supercapacitors. Herein, a one‐step self‐catalysis‐graphitization approach is developed to fabricate N/O/S co‐doped graphitic hierarchical porous carbon from bituminous coal by taking advantages of the intrinsic heteroatoms for self‐doping, the associated minerals for graphization and KOH activation for hierarchical porosity, contributing to abundant entrapments for Zn2+ capture, express transfer pathway for fast kinetics and sturdy skeleton for long‐term duration and thereby endowing the coin‐type ZIHSC device an ultrahigh capacity of 229.8 mAh g−1 at 0.1 A g−1 with 110.7 mAh g−1 conservation even at a 500‐fold amplified current density, the maximum energy density of 183.2 Wh kg−1 and an outstanding stability of 99.3% over 100,000 cycles at 50 A g−1. Gratifyingly, the soft‐pack ZIHSC device still delivered a capacity of 141.2 mAh g−1 at 0.1 A g−1 and a energy density of 112.3 Wh kg−1 for practicability. The quasi‐solid ZIHSC device also displayed a capacity of 144.7 mAh g−1 at 0.1 A g−1 with a energy density of 115.2 Wh kg−1 plus excellent mechanical flexibility.
具有先进锌离子储存能力和超稳定性的煤衍生石墨级多孔碳的自催化石墨化策略
基于双碳目标,将煤转化为锌离子混合超级电容器(ZIHSC)的高附加值碳材料,实现电池的高能量密度和超级电容器的高功率输出,是一种清洁高效的利用方法。本文提出了一种一步自催化石墨化方法,利用烟煤自掺杂的杂原子、石墨化的伴生矿物和KOH活化的分层孔隙,制备了N/O/S共掺杂的石墨分层多孔碳,为Zn2+捕获提供了丰富的包裹层。这使得硬币型ZIHSC器件在0.1 A g−1时具有229.8 mAh g−1的超高容量,即使在放大500倍的电流密度下也能保持110.7 mAh g−1,最大能量密度为183.2 Wh kg−1,并且在50 A g−1的10万次循环中具有99.3%的出色稳定性。令人满意的是,软封装ZIHSC器件在0.1 a g−1时仍然提供141.2 mAh g−1的容量和112.3 Wh kg−1的能量密度,具有实用性。准固体ZIHSC器件在0.1 a g−1下的容量为144.7 mAh g−1,能量密度为115.2 Wh kg−1,具有优异的机械灵活性。
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
Small
Small 工程技术-材料科学:综合
CiteScore
17.70
自引率
3.80%
发文量
1830
审稿时长
2.1 months
期刊介绍: Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信