Cargando…
The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold
This study investigated the electrochemical actuation behavior of nanoporous material during the capacitive process. The length change of nanoporous gold (npg) was in situ investigated in a liquid environment using the dilatometry technique. The mechanical effect of MnO(2) layers was introduced in t...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603228/ https://www.ncbi.nlm.nih.gov/pubmed/33081009 http://dx.doi.org/10.3390/nano10102056 |
_version_ | 1783603875192766464 |
---|---|
author | Han, Zhifei Qi, Zhengpan Wei, Qiang Deng, Qibo Wang, Ke |
author_facet | Han, Zhifei Qi, Zhengpan Wei, Qiang Deng, Qibo Wang, Ke |
author_sort | Han, Zhifei |
collection | PubMed |
description | This study investigated the electrochemical actuation behavior of nanoporous material during the capacitive process. The length change of nanoporous gold (npg) was in situ investigated in a liquid environment using the dilatometry technique. The mechanical effect of MnO(2) layers was introduced in this work to improve the actuation characteristics of the npg samples. Our work found that the actuation behavior of npg sample could be significantly modulated with a covering of MnO(2) layers. The electrochemical actuation amplitude was efficiently improved and strongly dependent on the thickness of MnO(2) layers covered. Aside from the amplitude, the phase relation between the length change and the electrode potential was inverted when covering the MnO(2) layer on the npg samples. This means the expansion of the npg samples and the contraction of samples covered with the MnO(2) layer when electrochemical potential sweeps positively. A simple finite element model was built up to understand the effect of the MnO(2) layer. The agreement between the simulation result and the experimental data indicates that the sign-inverted actuation-potential response of nanoporous gold contributes to the mechanical effect of MnO(2). It is believed that our work could offer a deep understanding on the effect of the MnO(2) layer on the electrochemical actuation and then provide a useful strategy to modulate the actuation performance of nanoporous metal materials. |
format | Online Article Text |
id | pubmed-7603228 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-76032282020-11-01 The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold Han, Zhifei Qi, Zhengpan Wei, Qiang Deng, Qibo Wang, Ke Nanomaterials (Basel) Communication This study investigated the electrochemical actuation behavior of nanoporous material during the capacitive process. The length change of nanoporous gold (npg) was in situ investigated in a liquid environment using the dilatometry technique. The mechanical effect of MnO(2) layers was introduced in this work to improve the actuation characteristics of the npg samples. Our work found that the actuation behavior of npg sample could be significantly modulated with a covering of MnO(2) layers. The electrochemical actuation amplitude was efficiently improved and strongly dependent on the thickness of MnO(2) layers covered. Aside from the amplitude, the phase relation between the length change and the electrode potential was inverted when covering the MnO(2) layer on the npg samples. This means the expansion of the npg samples and the contraction of samples covered with the MnO(2) layer when electrochemical potential sweeps positively. A simple finite element model was built up to understand the effect of the MnO(2) layer. The agreement between the simulation result and the experimental data indicates that the sign-inverted actuation-potential response of nanoporous gold contributes to the mechanical effect of MnO(2). It is believed that our work could offer a deep understanding on the effect of the MnO(2) layer on the electrochemical actuation and then provide a useful strategy to modulate the actuation performance of nanoporous metal materials. MDPI 2020-10-18 /pmc/articles/PMC7603228/ /pubmed/33081009 http://dx.doi.org/10.3390/nano10102056 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Communication Han, Zhifei Qi, Zhengpan Wei, Qiang Deng, Qibo Wang, Ke The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold |
title | The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold |
title_full | The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold |
title_fullStr | The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold |
title_full_unstemmed | The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold |
title_short | The Mechanical Effect of MnO(2) Layers on Electrochemical Actuation Performance of Nanoporous Gold |
title_sort | mechanical effect of mno(2) layers on electrochemical actuation performance of nanoporous gold |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603228/ https://www.ncbi.nlm.nih.gov/pubmed/33081009 http://dx.doi.org/10.3390/nano10102056 |
work_keys_str_mv | AT hanzhifei themechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT qizhengpan themechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT weiqiang themechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT dengqibo themechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT wangke themechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT hanzhifei mechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT qizhengpan mechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT weiqiang mechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT dengqibo mechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold AT wangke mechanicaleffectofmno2layersonelectrochemicalactuationperformanceofnanoporousgold |