Synergistic effects of electrodeposited Co(OH)2 nanoflakes on O2 plasma treated activated carbon electrodes for supercapacitor

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Bulletin Pub Date : 2025-10-01 Epub Date: 2025-04-15 DOI:10.1016/j.materresbull.2025.113497

Eunseon Chae , Seongjae Myeong , Chung Gi Min , Seoyeong Cheon , In Woo Lee , Young-Seak Lee

{"title":"Synergistic effects of electrodeposited Co(OH)2 nanoflakes on O2 plasma treated activated carbon electrodes for supercapacitor","authors":"Eunseon Chae , Seongjae Myeong , Chung Gi Min , Seoyeong Cheon , In Woo Lee , Young-Seak Lee","doi":"10.1016/j.materresbull.2025.113497","DOIUrl":null,"url":null,"abstract":"<div><div>Co(OH)2 nanoflakes were electrodeposited on O2 plasma-treated activated carbon (OAC) electrodes. O2 plasma treatment introduces oxygen functional groups and simultaneously etches the activated carbon (AC) surface in a short time, maximizing the efficiency of the subsequent electrodeposition process. Electrodeposition enables the rapid and uniform formation of Co(OH)2 nanoflakes through interactions with oxygen functional groups. The resulting OAC@Co(OH)2 exhibits excellent cycling stability due to its high surface area and hydrophilic functional groups and achieves a high specific capacitance of up to 244.7 F g-1. The OAC@Co600//AC exhibited a capacitance retention of 88.9 % after 10,000 cycles and an energy density of 44.6 Wh kg-1 at 700 W kg-1. The enhanced electrochemical properties were attributed to the synergistic effect of Co(OH)2 and OAC with hydrophilic functional groups. Thus, we present an efficient way to fabricate hydrophilic AC-based Co(OH)2 electrodes via electrodeposition.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113497"},"PeriodicalIF":5.7000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Bulletin","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0025540825002053","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/15 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Co(OH)₂ nanoflakes were electrodeposited on O₂ plasma-treated activated carbon (OAC) electrodes. O₂ plasma treatment introduces oxygen functional groups and simultaneously etches the activated carbon (AC) surface in a short time, maximizing the efficiency of the subsequent electrodeposition process. Electrodeposition enables the rapid and uniform formation of Co(OH)₂ nanoflakes through interactions with oxygen functional groups. The resulting OAC@Co(OH)₂ exhibits excellent cycling stability due to its high surface area and hydrophilic functional groups and achieves a high specific capacitance of up to 244.7 F g^-1. The OAC@Co600//AC exhibited a capacitance retention of 88.9 % after 10,000 cycles and an energy density of 44.6 Wh kg^-1 at 700 W kg^-1. The enhanced electrochemical properties were attributed to the synergistic effect of Co(OH)₂ and OAC with hydrophilic functional groups. Thus, we present an efficient way to fabricate hydrophilic AC-based Co(OH)₂ electrodes via electrodeposition.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

电沉积Co(OH)2纳米片在O2等离子体处理的超级电容器活性炭电极上的协同效应

将Co(OH)2纳米薄片电沉积在O2等离子体处理的活性炭（OAC）电极上。O2等离子体处理引入氧官能团，同时在短时间内蚀刻活性炭（AC）表面，最大限度地提高后续电沉积工艺的效率。电沉积通过与氧官能团的相互作用，使Co(OH)2纳米片快速均匀地形成。所得的OAC@Co(OH)2由于其高表面积和亲水官能团而表现出优异的循环稳定性，并达到高达244.7 F -1的高比电容。OAC@Co600//AC在循环10,000次后电容保持率为88.9%，在700 W kg-1时能量密度为44.6 Wh kg-1。电化学性能的增强是由于Co(OH)2和OAC与亲水性官能团的协同作用。因此，我们提出了一种通过电沉积制备亲水性交流基Co(OH)2电极的有效方法。

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分钟内获得全文去求助

来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.