Modeling the Gouy–Chapman Diffuse Capacitance with Attractive Ion–Surface Interaction

电解质 电容 离子 可见的 化学物理 电极 化学 分析化学(期刊) 吸附 物理化学 物理 色谱法 量子力学 有机化学
作者
Katharina Doblhoff-Dier,Marc T. M. Koper
出处
期刊:Journal of Physical Chemistry C [American Chemical Society]
卷期号:125 (30): 16664-16673 被引量:40
标识
DOI:10.1021/acs.jpcc.1c02381
摘要

The interfacial capacitance of a metal electrode in contact with a dilute electrolyte is generally expected to follow the behavior predicted by the Gouy–Chapman–Stern model. Recent experiments [Angew. Chem. Int. Ed. 2020, 59, 711], however, have shown that a deviation from the Gouy–Chapman behavior is observed even in dilute electrolytes on platinum and gold single-crystal electrodes. Such deviations are usually attributed to an interaction between the surface and the electrolyte ions. However, a quantitative model showing that the strong deviations from the Gouy–Champan behavior observed for Pt can be ascribed to such an effect is still lacking, particularly as other experimental observables do not indicate a strong ion adsorption. Here, we propose a double-layer model that is capable of reproducing the main experimental findings in a simple and (in parts) analytical way. The analytical model thereby includes the attractive ion–surface interaction via an additional capacitive element connected in parallel to the Gouy–Chapman capacitance. By comparing the model predictions to experiment, we subsequently infer characteristics of the ion–surface interaction. In particular, we find that the model predicts the attractive interaction to be weak (weaker than a typical chemical bond formed when contact adsorbing) and that the interaction has to be very similar for all ions. Furthermore, for a good agreement with experiment, ion-size effects are suggested to play a role in determining the potential of minimum capacitance.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
重要元容完成签到,获得积分10
1秒前
美有姬完成签到,获得积分10
2秒前
金钱完成签到,获得积分10
3秒前
4秒前
Ziyi_Xu发布了新的文献求助10
5秒前
xiaojian_291发布了新的文献求助10
5秒前
6秒前
6秒前
文献直达完成签到,获得积分10
7秒前
打打应助Lily采纳,获得10
7秒前
8秒前
木木完成签到,获得积分10
8秒前
松鼠完成签到 ,获得积分10
10秒前
zsg发布了新的文献求助10
11秒前
didilucky完成签到,获得积分10
11秒前
Yana1311发布了新的文献求助10
12秒前
12秒前
Gaahung发布了新的文献求助30
13秒前
二九十二完成签到,获得积分10
13秒前
Coco发布了新的文献求助10
15秒前
orixero应助ZWGS采纳,获得10
16秒前
斯文败类应助momo采纳,获得10
16秒前
传奇3应助会飞的YU采纳,获得40
16秒前
16秒前
xww完成签到,获得积分10
17秒前
小蘑菇应助毛毛采纳,获得10
19秒前
20秒前
田様应助任性一兰采纳,获得10
20秒前
20秒前
han应助阿良采纳,获得10
23秒前
Fine完成签到,获得积分10
23秒前
zym完成签到,获得积分10
24秒前
方格发布了新的文献求助10
25秒前
turquoise应助周一采纳,获得20
26秒前
26秒前
YvonneL发布了新的文献求助10
27秒前
弄香完成签到,获得积分10
27秒前
28秒前
28秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988920
求助须知:如何正确求助?哪些是违规求助? 3531290
关于积分的说明 11253247
捐赠科研通 3269903
什么是DOI,文献DOI怎么找? 1804830
邀请新用户注册赠送积分活动 882027
科研通“疑难数据库(出版商)”最低求助积分说明 809052