Durmuş, Gizem Nur Bulanık

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https://hdl.handle.net/20.500.14411/7049
Name Variants
D., Gizem Nur Bulanik
Durmus, Gizem Nur Bulanik
G., Durmus
D., Gizem Nur Bulanık
G. N. B. Durmus
Gizem Nur Bulanik, Durmus
G.N.B.Durmus
Durmus G.
Gizem Nur Bulanık, Durmuş
Durmus,G.N.B.
G. N. B. Durmuş
Durmuş, Gizem Nur Bulanık
Durmuş,G.N.B.
G.,Durmuş
D.,Gizem Nur Bulanık
G.N.B.Durmuş
D.,Gizem Nur Bulanik
Job Title
Doktor Öğretim Üyesi
Email Address
gizem.bulanik@atilim.edu.tr
Main Affiliation
Energy Systems Engineering
Status
Website
ORCID ID
0000-0001-8457-8093
Scopus Author ID
57222495877
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
ETF-8415-2022

Sustainable Development Goals

NO POVERTY1
NO POVERTY
0
Research Products
ZERO HUNGER2
ZERO HUNGER
0
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GOOD HEALTH AND WELL-BEING3
GOOD HEALTH AND WELL-BEING
0
Research Products
QUALITY EDUCATION4
QUALITY EDUCATION
0
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GENDER EQUALITY5
GENDER EQUALITY
0
Research Products
CLEAN WATER AND SANITATION6
CLEAN WATER AND SANITATION
0
Research Products
AFFORDABLE AND CLEAN ENERGY7
AFFORDABLE AND CLEAN ENERGY
11
Research Products
DECENT WORK AND ECONOMIC GROWTH8
DECENT WORK AND ECONOMIC GROWTH
0
Research Products
INDUSTRY, INNOVATION AND INFRASTRUCTURE9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
1
Research Products
REDUCED INEQUALITIES10
REDUCED INEQUALITIES
0
Research Products
SUSTAINABLE CITIES AND COMMUNITIES11
SUSTAINABLE CITIES AND COMMUNITIES
0
Research Products
RESPONSIBLE CONSUMPTION AND PRODUCTION12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
CLIMATE ACTION13
CLIMATE ACTION
0
Research Products
LIFE BELOW WATER14
LIFE BELOW WATER
0
Research Products
LIFE ON LAND15
LIFE ON LAND
0
Research Products
PEACE, JUSTICE AND STRONG INSTITUTIONS16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
PARTNERSHIPS FOR THE GOALS17
PARTNERSHIPS FOR THE GOALS
0
Research Products
Documents

5

Citations

109

h-index

2

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Documents

7

Citations

209

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Scholarly Output

12

Articles

7

Views / Downloads

31/37

Supervised MSc Theses

1

Supervised PhD Theses

1

WoS Citation Count

209

Scopus Citation Count

222

Patents

0

Projects

0

WoS Citations per Publication

17.42

Scopus Citations per Publication

18.50

Open Access Source

0

Supervised Theses

2

JournalCount
International Journal of Hydrogen Energy4
Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2 -- 23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022 -- 26 June 2022 through 30 June 2022 -- Istanbul -- 1861763
International Journal of Energy Research2
Journal of Power Sources1
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Author: Colpan, C. OzgurEnd date: 2024

Scholarly Output Search Results

Now showing 1 - 5 of 5
  • Thumbnail Image
    Article
    Citation - WoS: 11
    Citation - Scopus: 11
    Experimental and Modeling Studies of a High-Temperature Electrochemical Hydrogen Compressor
    (Pergamon-elsevier Science Ltd, 2024) Durmus, Gizem Nur Bulanik; Kuzu, Cemil; Devrim, Yilser; Colpan, C. Ozgur; Bulanık Durmuş, Gizem Nur
    Some non-technical factors such as economics and logistics prevent hydrogen (H2) tech-nologies from becoming more widespread in daily life. Today, the prevalence of H2 tech-nologies requires new technological developments. Electrochemical hydrogen compressors (ECHC) are of great interest due to their ability to pressurize and purify in one step. In this study, the electrochemical H2 compression performance of high phosphoric acid (PA) doped poly 2,2-m-phenylene-5,5-benzimidazole (PBI) membrane-based HT-ECHC under high temperature and non-humid conditions was investigated through both an experimental and a numerical approach. The H2 compression capacity of HT-ECHC at different operating voltages was examined by performance tests at 160 degrees C, and it was determined that the electrochemical compression performance increased with increasing operating voltage. It was observed that the current density values also increased with increasing voltage, and it was determined that a current density of 61.2 A was obtained at 1 V. As a result of the tests, H2 was successfully compressed from atmospheric pressure to 60 bar by HT-ECHC without any gas leakage. The results of the developed model were compared with the experimental performance test data, and the variation of molar flow, cell voltage, and cell efficiency over time was examined. It has been determined that the back diffusion from the cathode to the anode in the cell increases with the increasing operating voltage of HT-ECHC and therefore the cell efficiency decreases. It has been evaluated that the developed model and experimental results are in good agreement. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
  • Thumbnail Image
    Article
    Citation - WoS: 9
    Citation - Scopus: 10
    Investigation of the Performance of High-Temperature Electrochemical Hydrogen Purification From Reformate Gases
    (Wiley, 2022) Durmus, Gizem Nur Bulanik; Durmuş, Gizem Nur Bulanık; Colpan, C. Ozgur; Devrim, Yilser; Devrim, Yılser; Durmuş, Gizem Nur Bulanık; Devrim, Yılser; Mechanical Engineering; Energy Systems Engineering; Mechanical Engineering; Energy Systems Engineering
    In the present work, the purification of hydrogen from a hydrogen/carbon dioxide/carbon monoxide (H-2:CO2:CO) mixture by a high-temperature electrochemical purification (HT-ECHP) system is examined. Electrochemical H-2 purification experiments were carried out in the temperature range of 140-180 degrees C. The effects of the molar ratio of the gases in the mixture (H-2:CO2:CO-75:25:0, H-2:CO2:CO-72:26:2,0 H-2:CO2:CO-75:22:3, H-2:CO2:CO-75:20:5, H-2:CO2:CO-97:0:3, H-2:CO2:CO-95:0:5) and the operating temperature on the electrochemical H-2 separation were investigated. As a result of the electrochemical H-2 purification experiments, it was determined that the operating temperature is the most important parameter affecting the performance. According to the results obtained, H-2 purity of 99.999% was achieved at 160 degrees C with the reformate gas mixture containing 72% H-2, 26% CO2, and 2% CO by volume. According to the polarization curves of the gas mixtures containing CO, high current densities at low voltage were reached at 180 degrees C, and it was observed that the performance increased as the temperature increased, whereas the gas mixture without CO gave the best performance at 160 degrees C.
  • Thumbnail Image
    Article
    Mathematical Modeling of a Direct Dimethyl Ether Fuel Cell
    (Wiley-hindawi, 2022) Alpaydin, Guvenc Umur; Durmus, Gizem Nur Bulanik; Colpan, C. Ozgur; Devrim, Yilser; Bulanik Durmuş, Gizem Nur
    In this study, a mathematical model of a direct dimethyl ether fuel cell (DDMEFC) is developed to examine the effect of operating conditions on voltage losses and cell performance. In modeling, the electrochemical relations and mass balances are used to find the cell voltage for the given conditions. The values of some modeling parameters are determined using experimental data through curve fitting. For validation purposes, in-house experimental studies are conducted. For this purpose, Pt50Ru25Pd25/C, Pt40Ru40Pd20/C, and Pt50Pd50/C anode catalysts are synthesized by the microwave method. The effects of these synthesized catalysts and the operating conditions (cell temperature, the molar ratio of dimethyl ether, and water) on the DDMEFC performance are discussed by comparing the activation and ohmic polarization as well as the polarization curves using the model developed. This cell-level modeling approach could be considered as a preliminary step in the design process of a DDMEFC stack.
  • Thumbnail Image
    Review
    Citation - WoS: 91
    Citation - Scopus: 99
    A Review on the Development of the Electrochemical Hydrogen Compressors
    (Elsevier, 2021) Durmus, Gizem Nur Bulanik; Colpan, C. Ozgur; Devrim, Yilser
    Hydrogen should be stored at high pressure and high purity, especially when utilized in fuel cells. Conventionally, mechanical compressors are used for pressurization of hydrogen; however, this technology has disadvantages such as noise and vibration during operation due to their moving parts. Electrochemical hydrogen compressors (ECHC) have emerged as an alternative solution, as these devices can purify and compress hydrogen electrochemically in a single device. This review provides a comprehensive overview of key components and management strategies of the ECHC systems. This review will also provide an overview of different hydrogen compression technologies and provides a comprehensive overview of the latest developments and current issues and future of ECHCs. For this purpose, firstly, the advantages and disadvantages of ECHC compared to mechanical compressors are explained. Then, recent studies on hydrogen purification methods are given. The working principle of ECHC, material development studies and mathematical modeling of ECHCs are also discussed.
  • Thumbnail Image
    Article
    Citation - WoS: 14
    Citation - Scopus: 15
    High-Temperature Electrochemical Hydrogen Separation From Reformate Gases Using Pbi/Mof Composite Membrane
    (Pergamon-elsevier Science Ltd, 2023) Durmus, Gizem Nur Bulanik; Eren, Enis Oguzhan; Devrim, Yilser; Colpan, C. Ozgur; Ozkan, Necati; Bulanık Durmuş, Gizem Nur
    In this paper, the high-temperature electrochemical Hydrogen (H2) purification perfor-mance of a polybenzimidazole/UIO-66 metal-organic framework (PBI/UIO-66) membrane is investigated and analyzed at different values of current, temperature, and reformate feed composition. Purification measurements show that a significant reduction in gas impu-rities can be obtained. In the performance tests, three different ratios of reformate gas (RG) (H2:carbon dioxide (CO2):carbon monoxide (CO)) as RG-1= (75:25:0), RG-2= (75:22:3), and RG-3= (95:0:5) were used. The highest purification values were observed at 160 & DEG;C as 99.999%, 99.931%, and 99.708% for RG-1, RG-2, and RG-3, respectively. The obtained results show that an electrochemical H2 purification (ECHP) based on PBI/UIO-66 composite membrane is promising for H2 purification.& COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.