Article
Chemistry, Physical
Bilquis Ali Al-Qodami, Hafsa H. Alalawy, Islam M. Al-Akraa, Sayed Youssef Sayed, Nageh K. Allam, Ahmad M. Mohammad
Summary: A novel electrochemical engineering method utilizing intersected ferric oxyhydroxide nanotubes for synthesizing spherical Pt nanoparticles showed remarkable catalytic performance in direct formic acid fuel cells, effectively eliminating the issue of permanent CO poisoning and hinting at quick industrialization potential for the technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Yanmin Hu, Mengzhao Zhu, Xuan Luo, Geng Wu, Tingting Chao, Yunteng Qu, Fangyao Zhou, Rongbo Sun, Xiao Han, Hai Li, Bin Jiang, Yuen Wu, Xun Hong
Summary: Efficient and highly stable catalysts for the oxygen reduction reaction are essential for long-term operation of proton exchange membrane fuel cells. The coplanar Pt-carbon nanomeshes synthesized in this study exhibit excellent activity and stability in fuel cell tests, with peak power density of 1.21 W cm(-2) and current density of 0.360 A cm(-2) at 0.80 V in the H-2/O-2 cell. Density-functional theory analysis suggests that the increased vacancy formation energy of Pt atoms in coplanar Pt/C NMs helps restrain Pt dissolution and aggregation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Biochemistry & Molecular Biology
Nathaniel Hurley, Luyao Li, Christopher Koenigsmann, Stanislaus S. Wong
Summary: Researchers synthesized a series of 3D hierarchical metal oxide spherical motifs and explored their performance as catalysts for the methanol oxidation reaction. They found that the MOR activity of perovskite materials increases with decreasing ionic radius of the A-site cation, with 3D spherical motifs exhibiting enhanced catalytic activity compared to ultra-small or cubic control samples. Additionally, the Pt/CTO sample showed improved mass and specific activity values, as well as greater stability and durability compared to commercial TiO2 nanoparticle standards and precursor TiO2 templates.
Article
Nanoscience & Nanotechnology
J. Shen, Z. Hu, K. Chen, C. Chen, Y. Zhu, C. Li
Summary: The slow kinetics of oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFC) limits their performance. The development of platinum (Pt)-based high entropy alloy (HEA) catalysts has shown promise in enhancing ORR activity and reducing costs.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Multidisciplinary
Matthias Riegraf, Diana M. Amaya-Duenas, Noriko Sata, K. Andreas Friedrich, Remi Costa
Summary: The study found that Ni-doped chromite anodes show promising performance at high temperatures, especially with increased electrode thickness leading to enhanced performance and stability. However, sulfur poisoning and increasing current density can degrade performance, requiring redox cycling for reversal.
Article
Chemistry, Physical
Hyungjun Lee, Hoyeon Jung, Chanho Kim, Sungmin Kim, Inyoung Jang, Heesung Yoon, Ungyu Paik, Taeseup Song
Summary: The use of nickel oxide nanoparticles as a catalyst has shown to enhance the electrochemical performance of the BCFZY cathode in protonic ceramic fuel cells, leading to reduced polarization resistance and increased power density. This improvement is attributed to the enhanced surface-exchange reaction kinetics.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Linlin Yang, Ren He, Xiang Wang, Tingting Yang, Ting Zhang, Yong Zuo, Xuan Lu, Zhifu Liang, Junshan Li, Jordi Arbiol, Paulina R. Martinez-Alanis, Xueqiang Qi, Andreu Cabot
Summary: Direct urea fuel cells (DUFCs) offer a solution for treating residual wastewater and generating electricity. The use of self-supported electrodes consisting of NiO nanosheets grown on CuO nanowires proves to be effective for urea oxidation reaction (UOR). These electrodes exhibit excellent UOR performance, requiring 1.39 V vs. RHE to achieve a current density of 100 mA/cm2. Additionally, the DUFCs demonstrate high open circuit voltages and power densities of 0.88 V and 11.35 mW/cm2, respectively. The formation of NiOOH and the presence of a NiO/CuO p-p heterostructure contribute to the enhanced performance through improved charge transfer and modulated electronic states.
Review
Electrochemistry
Zhiheng Li, Mengran Li, Zhonghua Zhu
Summary: Acceleration of the oxygen reduction reaction at the cathode is crucial for low-temperature solid oxide fuel cells. Understanding the interactions between surface and bulk of the cathode materials is important for electrode kinetics and overall efficacy. Future research directions include investigating the role of oxygen vacancy, rational modulation of surface-bulk interactions, and the use of advanced fabrication techniques.
ELECTROCHEMICAL ENERGY REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Jie Zhao, Hao Zeng, Zhe-Xue Lu
Summary: The study demonstrated that composite microspheres composed of intertwined Pt nanowires and graphene oxide (GO) exhibited improved catalytic performance for direct methanol fuel cells (DMFCs) compared to commercial Pt-C, with higher methanol oxidation reaction activity, lower onset potential, better anti-CO toxicity, and enhanced durability.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Islam M. Al-Akraa, Ahmed E. Salama, Yaser M. Asal, Ahmad M. Mohammad
Summary: The study introduced a NiOx/Pt/CNTs/GC catalyst that significantly enhanced the electro-oxidation activity of formic acid and exhibited better tolerance against CO poisoning. By driving the reaction mechanism exclusively via the desirable direct dehydrogenation pathway, the catalyst suppressed the undesirable poisoning dehydration route and showed improved performance in direct formic acid fuel cells.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Analytical
Rafael Alcides Vicente, Swathi Patchaiammal Raju, Heloisa Vampre Nascimento Gomes, Itamar Tomio Neckel, Helio Cesar Nogueira Tolentino, Pablo Sebastian Fernandez
Summary: Real electrocatalysts are heterogeneous and their activity depends on specific active sites. Spatially resolved techniques can characterize different regions of catalysts. Spectroelectrochemical cells enable obtaining X-ray and vibrational spectroscopy contrast images, facilitating complete analysis of catalyst performance.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Ashish Gaur, Vikas Pundir, Takahiro Maruyama, Chandan Bera, Vivek Bagchi
Summary: The activity-enhancement of a new-generation catalyst is achieved by the collegial approach among specific solids, which exploit the mutual coactions of these materials for HER applications. The formation of the NiWO4-NiO interface, designed and synthesized through a three-step method, leads to the formation of abundant heterointerfaces. This catalyst exhibits superior HER activity and stability in an alkaline electrolyte.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Peng Yin, Shan-Cheng Shen, Le-Le Zhang, Xu-Sheng Zheng, Ming Zuo, Yan-Wei Ding, Hai-Wei Liang
Summary: This study demonstrates a high-temperature SMSI between platinum and sulfur-doped carbon (S-C) supports, which helps suppress platinum sintering and enhance the stability and electrocatalytic performance of Pt/S-C catalysts.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Fei He, Nannan Xia, Yan Zheng, Yixin Zhang, Huailin Fan, Delong Ma, Qianhe Liu, Xun Hu
Summary: By coupling impregnation and electrochemical activation, an efficient, stable, and robust Ru-based electrocatalyst with ultrasmall and well-distributed Ru nanoparticles was developed, showing superior performance compared to Pt-based and Ru-based catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Rodolfo M. Antoniassi, Heiki Erikson, Jose Solla-Gullon, Roberto M. Torresi, Juan M. Feliu
Summary: The study demonstrates that deposition of Pd on small supported Pt materials leads to enhanced electrocatalytic activity for formic acid electrooxidation, with lower overpotentials and higher oxidation current densities. The intrinsic activity after Pd decoration is significantly increased, while the oxidation overpotential is shifted to lower values by around 200 mV.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Bilquis Ali Al-Qodami, Hafsa H. Alalawy, Islam M. Al-Akraa, Sayed Youssef Sayed, Nageh K. Allam, Ahmad M. Mohammad
Summary: A novel electrochemical engineering method utilizing intersected ferric oxyhydroxide nanotubes for synthesizing spherical Pt nanoparticles showed remarkable catalytic performance in direct formic acid fuel cells, effectively eliminating the issue of permanent CO poisoning and hinting at quick industrialization potential for the technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Islam M. Al-Akraa, Yaser M. Asal, Sohair A. Darwish, Rafik M. Fikry, Reem H. Mahmoud, Mohamed Hassan, Ahmad M. Mohammad
Summary: This study investigates the influence of the catalyst mass loaded onto a glassy carbon electrode on the catalytic activity of methanol, formic acid, and ethylene glycol electro-oxidation, and the corresponding principal anodic reactions in the fuel cells. Increasing the Pd loading increases the peak currents and shifts the oxidation peak potentials to higher values.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Electrochemistry
Ghada H. El-Nowihy, Mohamed S. El-Deab
Summary: The electro-oxidation of ascorbate (AAO) in the presence of urea at NiOx/CoOx/GNs/GC electrode is investigated. The study highlights the crucial role of catalyst composition and order of deposition on the activity of AAO. Blending ascorbate with urea significantly promotes the AAO reaction and increases fuel utilization.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yaser M. Asal, Ahmad M. Mohammad, Sayed S. Abd El Rehim, Islam M. Al-Akraa
Summary: A binary catalyst composed of Pt and Cu was electrodeposited onto a glassy carbon substrate for formic acid electro-oxidation reaction. The simultaneous co-electrodeposition of Pt and Cu allowed for the tuning of catalyst functionality and improved catalytic activity and tolerance against CO poisoning.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Mohamed R. Rizk, Muhammad G. Abd El-Moghny, Hosam H. Abdelhady, Wael M. Ragheb, Adham H. Mohamed, Hazem F. Fouad, Moaz Mohsen, Abdelrahman S. Kamel, Mohamed S. El-Deab
Summary: In this study, the structure and composition of bimetallic CoNi porous electrocatalysts were optimized to improve the activity and stability of the hydrogen evolution reaction. The oxygen evolution reaction was replaced by glycerol oxidation reaction to reduce the input voltage.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Abdelmoniem H. Abu-Ghazala, Hosam H. Abdelhady, Amina A. Mazhar, Mohamed S. El-Deab
Summary: The study aims to utilize hazardous white brick waste powder as a heterogeneous catalyst for biodiesel production through transesterification. Various techniques were used to characterize the processed waste, and response surface methodology was employed to optimize the reaction conditions. The prepared catalyst showed good reusability, and the physico-chemical properties of the biodiesel met the standard ranges.
Article
Chemistry, Multidisciplinary
George E. Azmi, Aya M. Saada, Eissa M. Shokir, Mohamed S. El-Deab, Attia M. Attia, Walaa A. E. Omar
Summary: Chemical flooding using polymer and surfactant is commonly used in oilfields for enhanced oil recovery. This study investigates the adsorption of xanthan gum and sodium dodecylbenzenesulfonate on rock surfaces and the influence of concentration and reservoir salinity on adsorption capacity. The addition of nanosilica particles to the displacement fluids is also explored. Results show that increasing chemical concentration leads to increased adsorption on the rock surface, and permeability reduction is affected by both concentration and type of chemical used. The addition of nanosilica particles enhances adsorption on the rock surface.
Article
Electrochemistry
Ahmed M. Abdelrahim, Muhammad G. Abd El-Moghny, Mohamed E. El-Shakre, Mohamed S. El-Deab
Summary: Graphite felt (GF) is electrochemically modified via a controlled method by scanning the potential from +2 to -1.5 V in solutions with different NiCl2 concentrations. Increasing the NiCl2 amount enhances the anodic oxidation and cathodic deposition processes and functionalizes the GF surface. The modified GF, Ni(OH)2/GF-100, exhibits excellent catalytic activity for hydrogen evolution reaction and urea oxidation. Furthermore, a two-electrode cell for urea electrolysis shows promising energy-saving performance.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Mohamed E. Ghaith, Muhammad G. Abd El-Moghny, Gumaa A. El-Nagar, Hafsa H. Alalawy, Mohamed E. El-Shakre, Mohamed S. El-Deab
Summary: Nickel-copper bimetallic nanostructures are decorated on 3D carbon felt through sequential or co-electrodeposition tactics. The catalytic activity of these structures towards glycerol electrooxidation is investigated through various electrochemical measurements. The co-deposition of Ni-Cu shows a dendritic-like structure with higher electrocatalytic activity compared to the monometallic counterparts. The best electrode, prepared by sequential electrodeposition, shows significantly enhanced glycerol oxidation activity.
Article
Chemistry, Multidisciplinary
Ahmed M. M. Abdelrahim, Muhammad G. G. Abd El-Moghny, Mohamed E. E. El-Shakre, Mohamed S. S. El-Deab
Summary: Nowadays, glucose electro-oxidation reaction (GOR) is recognized as an important solution for environmental pollution. In this study, the GOR is improved using a non-precious catalyst, Ni(OH)(2), on a carbon support modified with in situ generated graphene nanosheets. The Ni(OH)(2)/FEGR electrode displays high catalytic performance due to its superb ionic and electronic conductivity.
Article
Energy & Fuels
Yaser M. Asal, Ahmad M. Mohammad, Sayed S. Abd El Rehim, Islam M. Al-Akraa
Summary: This investigation demonstrates the excellent catalytic performance of a binary catalyst composed of Pt and Pd simultaneously electrodeposited onto a glassy carbon surface for formic acid electro-oxidation reaction (FAOR) in an alkaline medium. The catalytic enhancement is mainly attributed to the reduction of CO adsorption on the Pt surface.
Article
Energy & Fuels
Islam M. Al-Akraa, Ahmad M. Mohammad
Summary: In this study, a spin-coated titanium oxide modified platinum catalyst was fabricated and optimized for methanol electro-oxidation. The annealing temperature was adjusted to achieve the highest catalytic activity and stability. The PtTi-700 catalyst annealed at 700 degrees C showed the highest activity and stability, with approximately an 11-fold increase in oxidation current density and a 19-fold increase in stability after 50 potential scanning cycles. The enhancement of charge transfer kinetics and reduction of catalyst poisoning explained the origin of catalysis.
Article
Electrochemistry
Mohamed E. Ghaith, Muhammad G. Abd El-Moghny, Gumaa A. El-Nagar, Hafsa H. Alalawy, Mohamed E. El-Shakre, Mohamed S. El-Deab
Summary: This study investigates the electrooxidation behavior of glycerol/glucose fuel blend on commercial carbon fibers decorated with NiOxHy nanostructures. Blending glycerol with different ratios of glucose improves fuel utilization and turnover number, with the 1:1 blend showing the best performance. Density functional theory (DFT) calculations provide insights into the favorable change of glucose adsorption mode in the presence of glycerol through hydrogen bonding. This enhancement is attributed to the elongation of the O-H bond in glycerol and a higher ability of the blend to donate electrons to the underlying catalyst.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Mohamed E. Ghaith, Muhammad Abd G. El-Moghny, Hafsa H. Alalawy, Mohamed E. El-Shakre, Mohamed S. El-Deab
Summary: This study investigates the effect of glycerol on the deposition of Ni onto carbon felt and its catalytic activity towards glycerol electrooxidation. The addition of glycerol improves the morphology, distribution, and particle size of the electrodeposited Ni, resulting in enhanced catalytic activity. The assumption is supported by density functional theory (DFT) calculations.
Article
Chemistry, Multidisciplinary
Bilquis Ali Al-Qodami, Hafsa H. Alalawy, Sayed Youssef Sayed, Islam M. Al-Akraa, Nageh K. Allam, Ahmad M. Mohammad
Summary: This investigation focuses on designing efficient catalysts for direct formic acid fuel cells. A ternary catalyst consisting of iron and nickel nanowire oxides sequentially assembled onto a platinum substrate was recommended for formic acid electro-oxidation reaction (FAOR). The catalyst exhibited improved catalytic activity and tolerance against CO poisoning compared to the bare platinum catalyst. An activated FeOx/NiOx/Pt catalyst showed a significantly higher activity and a shift in the onset potential of the FAOR. The presence of nano-FeOx and nano-NiOx enriched the catalyst surface with extra oxygen species, effectively mitigating the CO poisoning and facilitating the kinetics of the FAOR.
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
