A fuel cell is an electrochemical cell that converts a source fuel into an electrical current. It generates electricity inside a cell through reactions between a fuel and an oxidant, triggered in the presence of an electrolyte. Fuel cells have been attracting more and more attention in recent decades due to high-energy demands, fossil fuel depletions, and environmental pollution throughout world. In this study, different sized metallic and bimetallic nanoparticles (AuNPs, Fe@AuNPs, Ag@AuNPs) were synthesized on graphene oxide sheets and their electrocatalytic activities for methanol oxidation were investigated. All the catalysts were characterized by transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Electrochemical measurements are performed to compare the catalytic efficiencies of methanol oxidation. Experimental results demonstrated that graphene oxide-supported bimetallic nanoparticles enhanced electrochemical efficiency for methanol electro-oxidation with regard to diffusion efficiency, oxidation potential and forward oxidation peak current. Graphene oxide-supported Ag@AuNPs, in comparison to graphene oxide-supported Fe@AuNPs and AuNPs, showed the more efficiency for methanol electro-oxidation. -
Keywords: Fuel cell; Graphene oxide; Nanoparticle; Characterization; Methanol oxidation
Название публикации (dc.title) | Electrochemical studies on graphene oxide-supported metallic and bimetallic nanoparticles for fuel cell applications |
Автор/ы (dc.contributor.yazarlar) | Vinod Kumar Gupta, Mehmet Lütfi Yola, Necip Atar, Zafer Üstündağ, Ali Osman Solak |
Вид публикации (dc.type) | Makale |
Язык (dc.language) | İngilizce |
Год публикации (dc.date.issued) | 2014 |
Национальный/Международный (dc.identifier.ulusaluluslararasi) | Uluslararası |
Источник (dc.relation.journal) | Journal of Molecular Liquids |
Том/№ (dc.identifier.volume) | 191 |
Страница (dc.identifier.startpage) | 172–176 |
ISSN/ISBN (dc.identifier.issn) | ISSN: 0167-7322; Online ISSN: 1873-3166 |
Издатель (dc.publisher) | Elsevier |
Базы данных (dc.contributor.veritaban) | Web of Science Core Collection |
Базы данных (dc.contributor.veritaban) | Sciencedirect |
Базы данных (dc.contributor.veritaban) | Scopus |
Вид индекса (dc.identifier.index) | SCI Expanded |
Вид индекса (dc.identifier.index) | Scopus |
Импакт-фактор (dc.identifier.etkifaktoru) | 4,513 / 2017-WOS / 5 Year: 3,929 |
Резюме (dc.description.abstract) | A fuel cell is an electrochemical cell that converts a source fuel into an electrical current. It generates electricity inside a cell through reactions between a fuel and an oxidant, triggered in the presence of an electrolyte. Fuel cells have been attracting more and more attention in recent decades due to high-energy demands, fossil fuel depletions, and environmental pollution throughout world. In this study, different sized metallic and bimetallic nanoparticles (AuNPs, Fe@AuNPs, Ag@AuNPs) were synthesized on graphene oxide sheets and their electrocatalytic activities for methanol oxidation were investigated. All the catalysts were characterized by transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Electrochemical measurements are performed to compare the catalytic efficiencies of methanol oxidation. Experimental results demonstrated that graphene oxide-supported bimetallic nanoparticles enhanced electrochemical efficiency for methanol electro-oxidation with regard to diffusion efficiency, oxidation potential and forward oxidation peak current. Graphene oxide-supported Ag@AuNPs, in comparison to graphene oxide-supported Fe@AuNPs and AuNPs, showed the more efficiency for methanol electro-oxidation. - |
Резюме (dc.description.abstract) | Keywords: Fuel cell; Graphene oxide; Nanoparticle; Characterization; Methanol oxidation |
URL (dc.rights) | http://www.sciencedirect.com/science/article/pii/S0167732213004431 |
DOI (dc.identifier.doi) | 10.1016/j.molliq.2013.12.014 |
Факультет / Институт (dc.identifier.fakulte) | Mühendislik Fakültesi |
Кафедра (dc.identifier.bolum) | Kimya Mühendisliği Bölümü |
Автор(ы) в учреждении (dc.contributor.author) | Ali Osman SOLAK |
№ регистрации (dc.identifier.kayitno) | BLFB84A9DF |
Дата регистрации (dc.date.available) | 2016-03-03 |
Заметка (Год публикации) (dc.identifier.notyayinyili) | March 2014 |
Wos No (dc.identifier.wos) | WOS:000331022500028 |
Тематический рубрикатор (dc.subject) | fuel cell |
Тематический рубрикатор (dc.subject) | graphene oxide |
Тематический рубрикатор (dc.subject) | nanoparticle |
Тематический рубрикатор (dc.subject) | characterization |
Тематический рубрикатор (dc.subject) | methanol oxidation |