Article
Chemistry, Physical
Haifeng Yuan, Lili Zhao, Bin Chang, Yuke Chen, Tianjiao Dong, Jietong He, Di Jiang, Wanqiang Yu, Hong Liu, Weijia Zhou
Summary: In this study, efficient electrocatalysts for hydrogen evolution reaction (HER) were synthesized by laser ablation and reduction, resulting in Mo2C micropillars decorated with Pt nanoparticles. These catalysts showed excellent performance and stability in acid media. Integrated gas diffusion and catalytic electrodes constructed using laser technology exhibited lower voltage in a proton exchange membrane water electrolyzer compared to traditional catalysts, offering promising applications in the field of hydrogen energy.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Luz A. Zavala, Kavita Kumar, Vincent Martin, Frederic Maillard, Francoise Mauge, Xavier Portier, Laetitia Oliviero, Laetitia Dubau
Summary: This study presents the synthesis and characterization of efficient and durable hydrogen evolution reaction (HER) nanocatalysts based on MoS2 supported on high-surface-area carbon. The MoS2 catalyst was modified with Co and Pt to enhance the density of active sites and weaken the Hads binding energy. The results demonstrate that this modified catalyst shows promising electrocatalytic performance for acidic water electrolyzers.
Article
Thermodynamics
Ashkan Makhsoos, Mohsen Kandidayeni, Loic Boulon, Bruno G. Pollet
Summary: Proton Exchange Membrane Water Electrolyzers have significant potential for hydrogen production from renewable energy sources. This study compares single-stack and modular designs and introduces a strategic power allocation mechanism to optimize system performance. Experimental results show that modular design can significantly increase hydrogen production while minimizing system degradation.
Article
Chemistry, Physical
Merve Ozturk, Ibrahim Dincer
Summary: This study presents an analysis and assessment study of an integrated system for producing ammonia, consisting of a cryogenic air separation unit, polymer electrolyte membrane electrolyzer, and reactor. The system's efficiency is impacted by solar radiation intensity and inlet air conditions, with an increase in solar influx leading to decreased efficiencies. Additionally, the mass flow rate of inlet air significantly affects ammonia production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Merve Ozturk, Ibrahim Dincer
Summary: This study presents a novel integrated system for geothermal-based power generation and hydrogen production, as well as blending hydrogen into natural gas for household devices. The combustion efficiency and emissions of the blend are found to be influenced by the hydrogen fraction in natural gas.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Pablo A. Garcia-Salaberri
Summary: This paper presents a 1D multi-phase, non-isothermal model of a proton exchange membrane water electrolyzer (PEMWE) to analyze the effect of key operating conditions, electrochemical parameters and effective transport properties on efficiency and voltage losses. The results show that temperature, catalyst layer exchange current density, and membrane thickness are the most influential variables. Performance can be improved by developing catalyst layers with good activity, thin membranes with low permeability and stability at high temperatures, and permeable porous transport layers with tailored two-phase properties.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Di Chen, Yoo Sei Park, Fan Liu, Liyang Fang, Chuancheng Duan
Summary: This study demonstrates a novel class of hybrid perovskite materials that can serve as highly active and platinum group metal-free electrocatalysts for the oxygen evolution reaction, enabling low-cost and clean hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Bon-Hyuk Goo, Sae Yane Paek, Abu Zafar Al Munsur, Ook Choi, Youngkwang Kim, Oh Joong Kwon, So Young Lee, Hyoung-Juhn Kim, Tae-Hyun Kim
Summary: The article developed polyamide-coated Nafion composite membranes for the first time via interfacial polymerization to overcome the limitations of Nafion in real operational settings. It successfully improved the ion conductivity, mechanical performance, and dimensional stability of the membrane.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Xia Zhang, Qing Sheng Wei, Byeong Soo Oh
Summary: Diesel engine power plants are still widely used on remote islands in South Korea, but they have disadvantages. A case study conducted on Ui Island aimed to provide a zero emissions solution using renewable energy sources in an off-grid application. The PV/wind/battery/PEMFC system was found to be the best system.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Huong Doan, Ian Kendrick, Remi Blanchard, Qingying Jia, Ellie Knecht, Andrew Freeman, Tanner Jankins, Michael K. Bates, Sanjeev Mukerjee
Summary: By carefully thermal treating carbon-supported Ni nanoparticles chelated with cupferron, this study demonstrates enabled close juxtaposition of Ni-Ni-oxide surfaces, leading to improved stability and activity of the catalyst. The functionalized Ni catalyst outperforms carbon-supported Pt in AEM membrane-based hydrogen pump experiments.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Michael Moore, Manas Mandal, Aslan Kosakian, Marc Secanell
Summary: The hydrogen pump technique is effective in measuring the effective protonic conductivity of intermediate layers (ILs) in proton exchange membrane fuel cells and electrolyzers. The technique can only be used for ILs that are inactive during the hydrogen reaction, as proton transport through the ionomer can be bypassed by transferring the charge to the electronic phase. This study uses numerical modeling and experimental testing to investigate the impact of IL hydrogen reaction activity, thickness, and electronic conductivity on the prediction of IL protonic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Energy & Fuels
Zulfirdaus Zakaria, Siti Kartom Kamarudin
Summary: Electrochemical water splitting is a practical system for green hydrogen production, with alkaline electrolyzers and proton exchange membrane electrolyzers at advanced commercial levels. Anion exchange membrane (AEM) electrolyzers are recommended for their ability to address crucial issues with previous electrolyzer types, such as the use of non-platinum and non-Nafion membrane materials, high hydrogen storage density, and the ability to build compact micro-cells. The efficiency of the AEM electrolyzer is influenced by the solid polymer alkaline membrane, which serves as an anode and cathode separator, ion transfer pathway, and electron flow barriers.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Zhen Zhang, Cheng Jiang, Ping Li, Keguang Yao, Zhiliang Zhao, Jiantao Fan, Hui Li, Haijiang Wang
Summary: This study reveals the intrinsic behaviors of a series of ruthenium dichalcogenide crystals towards hydrogen evolution reaction through density functional theory calculations, and proposes a simple production strategy for efficient HER catalysts. Experimental results demonstrate that RuX2 catalysts exhibit impressive HER catalytic behavior, showing promise for potential commercial applications.
Article
Energy & Fuels
Seyedhassan Fakourian, Mahsa Alizadeh
Summary: This study investigates the preliminary design of generating hydrogen from coal utility boilers' wastewater by integrating electricity and an electrolyzer. A numerical model for the integrated PV solar panels and polymer electrolyte membrane (PEM) electrolyzer is developed, considering parallel solar panels and series PEM electrolyzer cells for optimal arrangement. The model considers essential losses and investigates the effects of working temperature, solar irradiation, and charge transfer coefficient on system efficiency. The calculated efficiency of the PEM electrolyzer and PV solar panels is 60-62.5% and 18-20%, respectively. The study demonstrates the potential application of the design in Texas, generating green hydrogen at a lower cost. The model provides valuable insights for large-scale hydrogen generation from power plants' wastewater using solar energy and electrolysis.
Article
Chemistry, Physical
Wonjae Lee, Hyebin Yun, Yongmin Kim, Sun Seo Jeon, Hoon Taek Chung, Byungchan Han, Hyunjoo Lee
Summary: Water electrolysis using anion exchange membranes holds promise for hydrogen production, and Ni-Mo catalysts have shown high activity for alkaline hydrogen evolution reaction. This study investigates their performance in a single-cell setup and reveals the significant impact of activation procedures on cell performance. The study also provides insights into the distribution of Mo, the surface structure, and the reaction mechanism, contributing to the development of efficient catalysts for large-scale hydrogen production.
Article
Engineering, Environmental
Mahesh M. Shanbhag, Nagaraj P. Shetti, Shankara S. Kalanur, Bruno G. Pollet, Mallikarjuna N. Nadagouda, Tejraj M. Aminabhavi
Summary: In this research, a hafnium-doped tungsten oxide modified carbon paste electrode was developed for the detection of trace levels of highly toxic perfluorooctanoic acid (PFOA). The electrode showed high sensitivity and selectivity, and demonstrated reliable results in real-time application for PFOA determination in various samples. The study also investigated the influence of electrolyte pH, temperature, immersion time, and concentration on the electrode's performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Hamid Reza Zamanizadeh, Svein Sunde, Bruno G. Pollet, Frode Seland
Summary: This study found that electrochemical activation of 316 stainless steel electrodes in high pH KOH electrolytes significantly improves their OER activity. The surface composition can be precisely controlled by adjusting the KOH concentration. By optimizing the surface composition, steel materials offer a cost-effective alternative to bulk nickel electrodes as OER electrodes in commercial AWE.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Jhuma Sadhukhan, Bruno G. Pollet, Miles Seaman
Summary: Green hydrogen production through photocatalytic water-splitting and lignocellulosic reforming is a significant proposition for renewable energy storage in global net-zero policies. This study investigates a novel hybrid system driven by visible solar radiation, combining photocatalytic water-splitting, lignocellulosic oxidation, and atmospheric CO2 fixation. The integration of these processes enables renewable hydrogen economy and direct CO2 capture from air, providing a solution to address the impact of climate change.
Article
Electrochemistry
Kwang-Seon Ahn, Rajangam Vinodh, Bruno G. Pollet, Rajendran Suresh Babu, Vanaraj Ramkumar, Seong-Cheol Kim, Kungumaraj Krishnakumar, Hee-Je Kim
Summary: Novel bimetallic manganese-cobalt hydrogen phosphate materials with unique hexagonal structures and porous nature were efficiently prepared and analyzed. The materials showed excellent performance in electrochemical testing and have potential applications in supercapacitors.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Xiao Xu, Shan Ji, Hui Wang, Xuyun Wang, Bruno G. Pollet, Rongfang Wang
Summary: In this study, porous NiO nanosheets decorated with Ni3S2 quantum dots were successfully prepared and used as electrocatalysts for urea electrolysis. The NiO/Ni3S2/NF electrode exhibited excellent catalytic activity and stability, enabling low-voltage and high-current-density urea electrolysis. The superior performance of NiO/Ni3S2/NF was attributed to the uniform pore structure on NiO nanosheets and the synergistic effect between Ni3S2 quantum dots and NiO nanosheets.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Biochemistry & Molecular Biology
Henrik E. Hansen, Daniel O. Fakhri, Frode Seland, Svein Sunde, Odne S. Burheim, Bruno G. Pollet
Summary: In this study, Cu@Pt bimetallic nanocatalysts were successfully synthesized using the sonochemical method, exhibiting significantly higher mass activity in the hydrogen evolution reaction compared to traditional Pt catalysts.
Article
Chemistry, Physical
Zhaoyong Chen, Xiaoyan Yan, Huali Zhu, Yanxia Wang, Qiming Liu, Junfei Duan, Shan Ji, Bruno G. Pollet
Summary: In this study, a porous prism architecture of Li1.2Mn0.54Ni0.13Co0.13O2 materials is successfully constructed, leading to improved initial discharge capacity and rate capability of lithium-ion batteries. The porous morphology promotes the intercalation and extraction of lithium ions, while the one-dimensional prism architecture ensures superior structural stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Sepanta Dokhani, Mohsen Assadi, Bruno G. Pollet
Summary: Population growth and industrial expansion have led to increased energy demand and fossil fuel use, resulting in greenhouse gas emissions and air pollution. Countries are seeking alternatives to fossil fuels, and hydrogen is a promising option for electricity generation. This study examines the production of hydrogen from seawater using a proton exchange membrane electrolyser and explores different energy sources for cost-effective power generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Weiqi Zhang, Xingchen Wang, Meihui Tan, Huiyuan Liu, Qiang Ma, Qian Xu, Bruno G. Pollet, Huaneng Su
Summary: Direct methanol fuel cell (DMFC) and direct ammonia fuel cell (DAFC) have attracted attention for their high energy density, environmental friendliness, and easy availability of liquid fuel. However, the high cost and low durability of platinum (Pt) have limited their large-scale application. In this study, self-supporting electrodes (SSEs) were developed using the square-wave potential (SWP) electro-deposition method, which led to improved catalytic activity and durability compared to conventional electrodes. The SSE with cauliflower-like Pt catalyst exhibited the best performance. This research suggests that SSEs have great potential for practical applications of DMFC and DAFC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Electrochemistry
Habib Ashassi-Sorkhabi, Amir Kazempour, Saleh Moradi-Alavian, Elnaz Asghari, Rajangam Vinodh, Bruno G. Pollet
Summary: Conversion of CO2 to value-added products is crucial in reducing atmospheric CO2 and addressing global warming crisis. Conducting polymers, with over two decades of history as efficient catalysts for CO2 reduction, exhibit excellent electrocatalytic performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Raffaela Cabriolu, Bruno G. Pollet, Pietro Ballone
Summary: Molecular dynamics simulation was used to study the impact of two ionic liquids (IL) on the nucleation, growth, and collapse of (nano)cavities in water. The first IL, tetra-ethyl ammonium mesylate, decreased the tendency of water to form cavities at 25 wt % concentration. The second IL, tetrabutyl phosphonium 2,4-dimethylbenzenesulfonate, promoted the formation of bubbles at the interface of water and IL-rich domains. The presence of ions hindered the collapse of cavities in [P4444][DMBS]/water solutions.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Review
Polymer Science
Rajangam Vinodh, Shankara Sharanappa Kalanur, Sadesh Kumar Natarajan, Bruno G. Pollet
Summary: This article summarizes one of the inexpensive methods for producing green hydrogen, which is the evolving anion exchange membrane water electrolysis (AEMWE). The most recent achievements in increasing polymer anionic conductivity, understanding AEM degradation mechanisms, and designing electrocatalysts are highlighted. The important issues affecting AEMWE behavior are discussed, as well as future constraints and opportunities. Strategies for producing dynamic and robust AEMWE electrocatalysts are also provided in this review.
Article
Chemistry, Physical
Faranak Foroughi, Marina Tintor, Alaa Y. Faid, Svein Sunde, Gregory Jerkiewicz, Christophe Coutanceau, Bruno G. Pollet
Summary: In this study, a method for activating polycrystalline metallic nickel surfaces towards the hydrogen evolution reaction (HER) in N2-saturated 1.0 M KOH aqueous electrolyte was developed through continuous and pulsed ultrasonication. It was found that ultrasonically activated Ni exhibited improved HER activity compared to non-ultrasonically activated Ni, with a much lower overpotential of -275 mV vs RHE at -10.0 mA cm-2. The ultrasonic pretreatment was observed to be a time-dependent process that gradually changed the oxidation state of Ni, and longer ultrasonication times resulted in higher HER activity compared to untreated Ni. This study highlights a straightforward strategy for activating nickel-based materials for the electrochemical water splitting reaction through ultrasonic treatment.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Electrochemistry
Youness El Issmaeli, Amina Lahrichi, Shankara S. Kalanur, Sadesh Kumar Natarajan, Bruno G. Pollet
Summary: This review examines the application of iron oxyhydroxide (FeOOH) based materials in supercapacitors (SCs). It explores factors that affect their electrochemical performance and proposes improvement strategies such as increasing surface area and facilitating electron transfer and ion diffusion. Additionally, the synergistic effects of composite materials on supercapacitive performance are investigated. FeOOH-based materials show potential for high energy-density SCs, providing an effective pathway in fabricating efficient, cost-effective, and practical energy storage systems for future devices.
