Year 2020, Volume 8 , Issue 1, Pages 1 - 10 2020-06-30

Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading

Hilal DEMİR KIVRAK [1] , Aykut CAGLAR [2] , Tulin AVCI HANSU [3] , Ömer ŞAHİN [4]


At present, monometallic CNT supported Pd electrocatalysts (Pd/CNT) are prepared at varying Pd loadings via sodium borohydride (NaBH4) reduction method to investigate their NaBH4 electrooxidation activities. These monometallic Pd/CNT catalysts are characterized by X-ray Diffraction (XRD), N2 adsorption-desorption, Fourier-Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy-Energy Dispersive X-ray analysis (SEM-EDX). Characterization results are revealed that Pd/CNT metallic Pd with a face center cubic structure is detected. The crystallite size corresponding to (1 1 1 ) plane is found as 5.87 nm for 30% Pd/CNT catalyst. The average pore size, pore-volume, and Brunauer, Emmet ve Teller (BET) surface area of Pd/CNT are obtained as 24.5 nm, 0.93 cm³/g, and 129.48 cm2/g, respectively. From the SEM-EDX results, it indicates that the Pd metal is homogeneously distributed in the carbon structures. NaBH4 electrooxidation measurements are performed with cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). The effect of Pd loading (0.1-70.0 %) for NaBH4 electrooxidation is investigated via CV. The 30% Pd/CNT catalyst exhibits the highest electrochemical activity with a current density of 16.5 mA cm-2. By altering Pd loading, catalyst surface electronic structure changes significantly, leading to enhanced NaBH4 electrooxidation activity. CA and EIS measurement results are agreement with CV results. As a conclusion, it is clear that Pd/CNT catalysts are promising catalysts for direct borohydride fuel cells.
Pd/CNT, fuel cell, sodium borohydride, catalyst
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Primary Language en
Subjects Engineering
Journal Section Research Article
Authors

Orcid: 0000-0001-8001-7854
Author: Hilal DEMİR KIVRAK (Primary Author)
Institution: Van Yuzuncu Yıl University
Country: Turkey


Orcid: 0000-0002-0681-1096
Author: Aykut CAGLAR
Institution: YÜZÜNCÜ YIL ÜNİVERSİTESİ
Country: Turkey


Orcid: 0000-0001-5441-4696
Author: Tulin AVCI HANSU
Institution: Siirt University
Country: Turkey


Orcid: 0000-0003-4575-3762
Author: Ömer ŞAHİN
Institution: SİİRT ÜNİVERSİTESİ
Country: Turkey


Dates

Publication Date : June 30, 2020

Bibtex @research article { mjen719632, journal = {MANAS Journal of Engineering}, issn = {1694-7398}, eissn = {1694-7398}, address = {}, publisher = {Kyrgyz-Turkish Manas University}, year = {2020}, volume = {8}, pages = {1 - 10}, doi = {}, title = {Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading}, key = {cite}, author = {Demi̇r Kıvrak, Hilal and Caglar, Aykut and Avcı Hansu, Tulin and Şahi̇n, Ömer} }
APA Demi̇r Kıvrak, H , Caglar, A , Avcı Hansu, T , Şahi̇n, Ö . (2020). Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading. MANAS Journal of Engineering , 8 (1) , 1-10 . Retrieved from https://dergipark.org.tr/en/pub/mjen/issue/55261/719632
MLA Demi̇r Kıvrak, H , Caglar, A , Avcı Hansu, T , Şahi̇n, Ö . "Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading". MANAS Journal of Engineering 8 (2020 ): 1-10 <https://dergipark.org.tr/en/pub/mjen/issue/55261/719632>
Chicago Demi̇r Kıvrak, H , Caglar, A , Avcı Hansu, T , Şahi̇n, Ö . "Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading". MANAS Journal of Engineering 8 (2020 ): 1-10
RIS TY - JOUR T1 - Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading AU - Hilal Demi̇r Kıvrak , Aykut Caglar , Tulin Avcı Hansu , Ömer Şahi̇n Y1 - 2020 PY - 2020 N1 - DO - T2 - MANAS Journal of Engineering JF - Journal JO - JOR SP - 1 EP - 10 VL - 8 IS - 1 SN - 1694-7398-1694-7398 M3 - UR - Y2 - 2020 ER -
EndNote %0 MANAS Journal of Engineering Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading %A Hilal Demi̇r Kıvrak , Aykut Caglar , Tulin Avcı Hansu , Ömer Şahi̇n %T Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading %D 2020 %J MANAS Journal of Engineering %P 1694-7398-1694-7398 %V 8 %N 1 %R %U
ISNAD Demi̇r Kıvrak, Hilal , Caglar, Aykut , Avcı Hansu, Tulin , Şahi̇n, Ömer . "Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading". MANAS Journal of Engineering 8 / 1 (June 2020): 1-10 .
AMA Demi̇r Kıvrak H , Caglar A , Avcı Hansu T , Şahi̇n Ö . Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading. MJEN. 2020; 8(1): 1-10.
Vancouver Demi̇r Kıvrak H , Caglar A , Avcı Hansu T , Şahi̇n Ö . Carbon nanotube supported direct borohydride fuel cell anode catalysts: the effect of catalyst loading. MANAS Journal of Engineering. 2020; 8(1): 10-1.