Article
Chemistry, Physical
Salih Ozbay, Nursev Erdogan, Fuat Erden, Merve Ekmekcioglu, Busra Rakop, Mehtap Ozdemir, Gulnur Aygun, Lutfi Ozyuzer
Summary: ITO, ZTO, AZO, and Ag are commonly used in multilayer thin films of transparent conducting oxide (TCO)/metal/TCO electrodes, with critical knowledge of surface free energy (SFE) being important for designing desirable TCO-based sandwich structures. Contact angle measurements of different liquids were used to evaluate the wettability properties of TCO, Ag interlayer, and TCO/Ag/TCO. The results showed that the SFE components varied depending on the TCO type, the total SFE values of TCO/Ag/TCO films were lower than TCO films, and AZO/Ag adhesion was stronger than other TCO/Ag structures.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
M. Moradi, R. Saidi, B. Hoomehr, K. Raeissi
Summary: Zinc oxide coatings with different morphologies were electrodeposited on Ti6Al4V substrates, and the incorporation of BG nanoparticles modified the spherical morphology of the coatings. The coatings with spherical morphology exhibited enhanced surface roughness, wettability, and adhesion strength, and showed complete barrier property after immersion in PBS solution. However, adverse effects were observed for the coatings with flower-like morphology at higher deposition voltage. The ZnO-BG composite coating with spherical morphology achieved the highest corrosion barrier performance and improved formation of Ca-P deposits on its surface during bioactivity tests in SBF.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
S. N. M. Nazhirah, S. K. Ghoshal, R. Arifin, K. Hamzah
Summary: The inclusion of bimetallic nanoparticles in tellurite-based glass can achieve optimum hydrophobic activity resembling the lotus effects. By controlling the contents of Ag and TiO2 NPs, the hydrophobic and hydrophilic traits of the studied glasses can be tailored for diverse self-cleaning applications.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Imosobomeh L. Ikhioya, Nwamaka Akpu, Agnes C. Nkele
Summary: The research studied the structure, elemental composition, optical properties, and energy band gap of undoped and ytterbium-doped zinc oxide films, revealing a decrease in band gap after introducing ytterbium as a dopant. The ytterbium-doped zinc oxide films are suitable materials for solar thermal energy collectors and photovoltaic applications.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
R. Saidi, K. Raeissi, F. Ashrafizadeh, M. Kharaziha
Summary: The study aimed to improve the corrosion resistance of Ti6Al4V using electrodeposited zinc oxide coatings. By controlling the process parameters, zinc oxide coatings with various morphologies were created, with spherical morphology providing higher corrosion performance at the initial stage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Karolina Syrek, Olena Tynkevych, Mateusz Wojtas, Marcin Koziel, Lukasz Pieta, Leszek Zaraska
Summary: The possibility of fabricating nanostructured ZnO layers on conductive glass substrates via simple room-temperature electrodeposition was investigated. The deposits' morphology, composition, and semiconducting properties were examined using various techniques. The photoelectrochemical performance of the ZnO photoanodes was found to be greatly influenced by the electrodeposition duration, with the most promising activity observed for the photoanode deposited at -1.5 V vs. SCE for 40 min.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Analytical
Ahmad Fallatah, Nicolas Kuperus, Mohammed Almomtan, Sonal Padalkar
Summary: In this study, a zinc oxide-based biosensor was developed for detecting organophosphate pesticides. It was found that the biosensor fabricated on carbon cloth as the substrate exhibited better performance with higher detection sensitivity and stability.
Article
Materials Science, Ceramics
Wentao Zhou, Zhaojun Li, Jianlin Li
Summary: The novel process of cladding drawing is used to produce strong and conducting glass fibers from reduced graphene oxide and soda-lime-silica glass, showing greatly improved mechanical properties and sensitivity to temperature due to the wrinkled configuration of the graphene oxide sheets. The fibers have a conducting network of graphene oxide sheets along their length, making them suitable for intensive wear conditions and potentially serving as built-in temperature sensors.
CERAMICS INTERNATIONAL
(2021)
Article
Thermodynamics
Chanwoo Park, Taegun Kim, Yong-Il Kim, Ali Aldalbahi, Mohammad Rafe Hatshan, Segonpil An, Sam S. Yoon
Summary: Hierarchically structured ZnO nanowires were fabricated via electrospraying and chemical bath deposition for pool boiling applications, showing an enhancement in critical heat flux and effective heat transfer coefficient while promoting efficient boiling process. The study revealed that ZnO nanowires exhibited good surface wettability and the combination of bare and coated surfaces achieved optimal pool boiling conditions.
APPLIED THERMAL ENGINEERING
(2021)
Review
Biochemistry & Molecular Biology
Hong Yong Sohn, Arun Murali
Summary: This article reviews and summarizes recent work in this laboratory on the synthesis of advanced transparent conducting oxide nanopowders using plasma. The process involves selecting suitable precursors, injecting them into a non-transferred thermal plasma, vaporizing them, and forming nanosized oxide particles through vapor-phase reactions. The thermal plasma process shows great potential as an efficient technique for synthesizing oxide nanopowders.
Article
Materials Science, Ceramics
Ray-Jay Jeng, Tetsuo Kishi, Kakeru Hirota, Nobuhiro Matsushita, Tetsuji Yano
Summary: This study successfully formed submicron-thick tellurite glass films by optimizing fabrication conditions and revealed the relationship between the formation mechanism of glass films and the surface tension gradient. These tellurite films have potential applications as optical waveguides in next-generation optical circuits.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Hajar Ghannam, J. P. B. Silva, Adil Chahboun
Summary: By synthesizing zinc oxide nanowires of different lengths, the relationship between surface morphology and electrochemical performance was studied, with the finding that increasing the length of the nanowires contributes to a decrease in electrochemical performance. A new strategy combining nanowires and microsheets was proposed to improve the morphology for enhanced electrochemical performance.
Article
Mechanics
P. Rodriguez-Diaz, A. Rubio, J. M. Montanero, A. M. Ganan-Calvo, M. G. Cabezas
Summary: This study focuses on the bursting of bubbles in weakly viscoelastic liquids and the effects of dissolved macromolecules on the bubble dynamics. The results show that the presence of macromolecules at the water-air interface influences the wave propagation and energy focusing during cavity collapse, resulting in changes in the velocity and radius of the first-emitted droplet. The study also reveals that bulk viscoelasticity leads to a significant difference between the velocity of the jet front and the first-emitted droplet, and even small polymer concentrations can cause droplet coalescence. Overall, viscoelasticity hinders the ejection of small droplets, even in quasi-Newtonian liquids.
Article
Metallurgy & Metallurgical Engineering
J. K. L. S. Monteiro, D. Majuste, M. P. Porto, A. M. Freitas, R. A. M. Gomes
Summary: This study examines the feasibility of using highly-variable direct current to produce high-quality cathodes. By simulating different current profiles and applying them to an electrowinning cell, it was found that highly-variable DC current can still have high efficiency and low energy consumption under different current densities and amplitude variations.
Article
Chemistry, Physical
Julian Guerrero, Elisabeth Bajard, Nathanaelle Schneider, Fabienne Dumoulin, Daniel Lincot, Umit Isci, Marc Robert, Negar Naghavi
Summary: Using an electrochemical method, we developed transparent and conductive ZnO nanoporous layers that encapsulate molecular catalysts, serving as both a window layer for thin-film solar cells and a catalytic layer for solar-to-fuel conversion. We demonstrated the conversion of CO2 into CO with high selectivity and current densities using tetraammonium-substituted Co phthalocyanine encapsulated in the window layer of Cu(In,Ga)Se-2 solar cells, achieving a turnover number of above 100,000 and a turnover frequency of 10s(-1) after 3 hours of operation under 1 sun irradiation. This approach has the potential for adapting to various high-efficiency solar cells and facilitating the testing of different molecular catalysts for CO2 conversion into valuable fuels.
ACS ENERGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Ananthakumar Ramadoss, Nilimapriyadarsini Swain, Gobi Saravanan, Sohaila Z. Noby, K. Kirubavathi, Lukas Schmidt-Mende, K. Selvaraju
Summary: The study introduces the fabrication of flexible and lightweight graphite paper current collectors and titanium oxynitride/graphite electrode for flexible supercapacitors. The results show that the prepared electrode exhibits high capacitance and excellent cycling stability, making it a promising candidate for lightweight and flexible supercapacitor applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Review
Engineering, Environmental
Nilimapriyadarsini Swain, Alekhika Tripathy, Arun Thirumurugan, B. Saravanakumar, Lukas Schmidt-Mende, Ananthakumar Ramadoss
Summary: In the modern phase of electricity and global connectivity, supercapacitors play a crucial role in overcoming the limitations of capacitors and batteries. This review discusses the recent trends in stretchable materials used for supercapacitor applications and their performance and usability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Azhar Fakharuddin, Konstantina-Kalliopi Armadorou, Leandros P. Zorba, Marinos Tountas, Tobias Seewald, Anastasia Soultati, Polychronis Tsipas, Emilia R. Schuetz, Nikolaos Tzoganakis, Stylianos Panagiotakis, Konstantina Yannakopoulou, Athanasios Dimoulas, Vassilis Psycharis, Emmanuel Kymakis, Abd Rashid bin Mohd Yusoff, Konstantinos Aidinis, Lukas Schmidt-Mende, Georgios C. Vougioukalakis, Mohammad Khaja Nazeeruddin, Maria Vasilopoulou
Summary: Inverted perovskite solar cells (PSCs) have gained attention due to their low-temperature fabrication process. However, the limited availability of electron transport materials, particularly the commonly used PCBM, compromises the efficiency and stability of the cells. In this study, a new electron transport material called EPF03 was synthesized and tested in inverted PSCs, showing a significant improvement in efficiency compared to PCBM. The results also suggest that EPF03 can enhance the stability and photostability of perovskite solar cells.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Energy & Fuels
Ananthakumar Ramadoss, Ka Kan Wong, Nilimapriyadarsini Swain, Ankita Mohanty, K. Kirubavathi, K. Selvaraju, Lukas Schmidt Mende
Summary: In this study, lightweight and ultrabendable rough graphite sheets were introduced as a current collector for flexible supercapacitors. The as-prepared electrode showed better electrochemical performance due to the rough surface and good electrical conductivity of the current collector.
Article
Chemistry, Physical
Eugen Zimmermann, Ka Kan Wong, Tobias Seewald, Julian Kalb, Jonathan Steffens, Giso Hahn, Lukas Schmidt-Mende
Summary: Atmospheric Pressure Spatial Atomic Layer Deposition (AP-SALD) is a promising deposition technique that offers a significantly increased deposition rate at ambient conditions. In this study, amorphous and anatase TiO2 layers were fabricated by AP-SALD and used as a hole-blocking layer in hybrid perovskite solar cells. However, it was found that TiO2 layers fabricated at elevated deposition temperatures exhibited unfavorable interface to the perovskite layer, resulting in reduced efficiency of the solar cells.
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2022)
Article
Chemistry, Physical
Sohaila Z. Noby, Ankita Mohanty, Peymen Zirak, Ananthakumar Ramadoss, Lukas Schmidt-Mende
Summary: This study reports the preparation of binder-free carbon coated vertically aligned α-MoO3 electrode through posttreatment in reduced gas environments. The vacuum treated α-MoO3 electrode exhibited the highest specific capacitance and maintained a stable electrochemical performance. The proposed hybrid synthesis approach shows great promise for high-performance supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Timo Raab, Tim Mayer, Tobias Seewald, Lukas Schmidt-Mende
Summary: This study investigates the spin coating process of a P3HT/PC71BM blend and reveals that it can be divided into three phases. The crystallization phase has the most significant influence on the final morphology of the film.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Emilia R. Schuetz, Azhar Fakharuddin, Yenal Yalcinkaya, Efrain Ochoa-Martinez, Shanti Bijani, Abd. Rashid bin Mohd Yusoff, Maria Vasilopoulou, Tobias Seewald, Ullrich Steiner, Stefan A. L. Weber, Lukas Schmidt-Mende
Summary: In this study, a method of controlled recrystallization using methylamine gas treatment has been successfully developed, resulting in improved crystallinity and properties of perovskite films. The trap density is reduced by half, and the surface conductivity and spatial homogeneity are enhanced after methylamine treatment. When applied in photodetectors, the method leads to significantly increased detectivities and faster response times.
Article
Materials Science, Multidisciplinary
Aurimas Vysniauskas, Simon Keegan, Kasparas Rakstys, Tobias Seewald, Vytautas Getautis, Lukas Schmidt-Mende, Azhar Fakharuddin
Summary: This research demonstrates the importance of compositional tuning using different 2D cations for perovskite emissive layers. The ratio between the 2D cation and the [PbX6]4- component affects the electrical transport and emission properties of the device. Excess cations are required to enhance the external quantum efficiency of PeLEDs, with FPEA achieving the highest EQE and BPEA resulting in the lowest EQE. Additionally, FPEA-based perovskite exhibits fewer pinholes and traps, as well as better charge transport properties.
ORGANIC ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Rajorshi Das, Michael Linseis, Stefan M. M. Schupp, Franciska S. S. Gogesch, Lukas Schmidt-Mende, Rainer F. F. Winter
Summary: Three binary charge-transfer (CT) compounds formed by the donor 2,2':6',2'':6'',6-trioxotriphenylamine (TOTA) and the acceptors F(4)TCNQ and F(4)BQ, as well as a CT compound formed by a pyrene-annulated azaacene (PAA) and the acceptor F(4)TCNQ, were reported. The identities of these compounds were confirmed by various spectroscopic techniques and single-crystal X-ray diffraction. The crystal structures revealed different stoichiometries for each compound, and the spectroscopic data indicated varying degrees of charge transfer. The compounds exhibited intricate packing motifs in the crystal lattice and showed CT transitions in the solid-state UV-vis-NIR spectra. The electrical conductivity of the compounds varied, with the CT compounds containing F(4)TCNQ being insulators and (TOTA)(2)·F(4)BQ showing weak conductivity.
Review
Energy & Fuels
Gayathry Ganesh, Amina Yasin, Izan Izwan Misnon, Azhar Fakharuddin, Lukas Schmidt-Mende, Mohd Hasbi Ab Rahim, Sabu Thomas, Rajan Jose
Summary: Perovskite solar cells (PSCs) have shown great potential in improving the renewable energy mix, but their poor operational stability hampers their market potential. This article reviews the use of polymers as a remedy to enhance stability and improve the performance of PSCs. The synergistic interactions between polymers and perovskite materials are analyzed, and the importance of polymers in various layers of the solar cells is discussed, particularly in terms of stability.
Article
Nanoscience & Nanotechnology
Timo Raab, Tobias Seewald, Stefan Kraner, Lukas Schmidt-Mende
Summary: This study investigates the influence of 1-chloronaphtalene (CN) on the spin coating of Y6:PM6 solar cells dissolved in chloroform. The film formation of Y6:PM6 can be divided into two parts in the presence of CN, with one part related to the evaporation of chloroform and the other part related to the evaporation of CN. Even at low CN concentration, the film formation is not completed for several minutes after the spin coating process. The removal of CN can be achieved by spin coating the electron transport layer PDINN from methanol, resulting in comparable performance to solar cells with more common CN concentrations.
Article
Energy & Fuels
Muhammad Irfan Haider, Hao Hu, Tobias Seewald, Safeer Ahmed, Muhammad Sultan, Lukas Schmidt-Mende, Azhar Fakharuddin
Summary: Defects in halide perovskites limit charge transfer, induce nonradiative recombination, and accelerate degradation in perovskite solar cells (PSCs). Passivating these defects using ethylenediamine (EDA) through vapor annealing enhances photovoltaic performance, increasing open-circuit voltage by over 100 mV and improving power conversion efficiency by approximately 22%. This improvement is attributed to upward shift in Fermi energy level, reduced lattice strain and Urbach energy, and reduced nonradiative recombination upon EDA passivation. The EDA-modified PSCs also demonstrate improved shelf-life, retaining 87% of initial efficiency after 850 hours.
Article
Nanoscience & Nanotechnology
Christian Jenewein, Stefan M. Schupp, Bing Ni, Lukas Schmidt-Mende, Helmut Coelfen
Summary: The electrical conductivity of platinum nanocube-based mesocrystals can be tuned by varying different capping agents. The intrinsic resistance of individual mesocrystals can be quantified reproducibly through electrical nanoprobing and focused ion beam deposition contacting. The rigidity and conductivity of mesocrystals can be increased by organically linking and mineral bridging the individual nanoparticles.
Article
Materials Science, Multidisciplinary
Sohaila Z. Noby, Azhar Fakharuddin, Stefan Schupp, Muhammad Sultan, Marina Krumova, Malte Drescher, Mykhailo Azarkh, Klaus Boldt, Lukas Schmidt-Mende
Summary: Functionalized materials are important for advancements in physics, chemistry, materials science, and biology due to their unique electronic properties. This study focuses on tuning oxygen vacancy-mediated intrinsic defects in vertically aligned alpha-MoO3 crystals through thermal treatment under different reducing and oxidizing atmospheres. The experimental results demonstrate the positions and concentrations of the oxygen vacancies and the restitution of the oxygen ions. These oxygen vacancies do not affect the optical band gap, but significantly impact the electrical conductivity.
MATERIALS ADVANCES
(2022)
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)
