Article
Chemistry, Multidisciplinary
Ruth Dikki, Eda Cagli, Drace Penley, Metin Karayilan, Burcu Gurkan
Summary: Choline-based sorbents were developed for CO2 capture, and the impact of different molecular structures on regenerability was explored. Eutectic solvents were formed by mixing with ethylene glycol, enabling renewable regeneration. The study provides guidance for molecular design of eutectic sorbents.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yu Chen, Di Zhao, Yue Bai, Yaoting Duan, Cong Liu, Jiaming Gu, Xin Wang, Xuanchao Sun, Yuting Li, Lijuan Zhang
Summary: This study systematically investigates the refractive index of typical deep eutectic solvents (DESs) and analyzes the effects of hydrogen-bonding donor, hydrogen-bonding acceptor, mole ratio, and temperature. The results show that these factors have a significant impact on the refractive index, and the presence of water decreases the refractive index of all DESs studied.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Thermodynamics
Behrouz Mohammadi, Hemayat Shekaari, Mohammed Taghi Zafarani-Moattar
Summary: The thermophysical properties of novel choline chloride-based deep eutectic solvents and binary mixtures with aromatics were measured to evaluate solute-solvent interactions. The results indicate that deep eutectic solvents with amine functional groups interact more effectively with benzene or thiophene. Different quantification parameters were used for interpreting the molecular interactions in the studied systems.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Green & Sustainable Science & Technology
Rangaswamy Puttaswamy, Chanchal Mondal, Dibyendu Mondal, Debasis Ghosh
Summary: Deep eutectic solvents (DES) have emerged as promising alternative electrolytes for rechargeable batteries and supercapacitors. DES possesses properties similar to ionic liquids, such as low vapor pressure, non-flammability, and high ionic conductivity. It is a cost-efficient and environmentally friendly option for energy storage devices. Recent research efforts have focused on designing and developing novel DES systems and investigating their physicochemical characteristics and electrochemical performances. The challenges and future prospects of DES electrolytes have also been discussed, along with proposed strategies for improving their performance.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Chemistry, Applied
Bahareh Abtahi, Hossein Tavakol
Summary: An environmentally friendly method using CuI catalyst was developed for the synthesis of various benzofuran derivatives, with a one-pot, 3-component reaction in a specific deep eutectic solvent. The method showed easy workup and high yields, preparing 12 different derivatives in 7 hours at 80 degrees C.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Chiara Allegretti, Paola D'Arrigo, Francesco G. Gatti, Letizia A. M. Rossato, Eleonora Ruffini
Summary: H-1-NMR spin lattice relaxation times (T-1) measured by inversion recovery technique were used to determine the stoichiometric coefficient of trimethylglycine betaine/diol based deep eutectic solvents (DESs) including ethylene glycol, triethylene glycol, and 1,3-propandiol as H-bond donors. The maximum water content tolerated by the DESs before complete hydration was also determined. Furthermore, the method was validated by comparing the eutectic composition of the betaine/glycol system with that determined by differential scanning calorimetry analysis, and the stoichiometric coefficients were found to be identical.
Article
Chemistry, Multidisciplinary
Hui Fu, Xinyu Wang, Haina Sang, Jinhe Liu, Xufeng Lin, Longli Zhang
Summary: This study synthesized superbase-based deep eutectic solvents (DESs) with different active sites for CO2 capture, and found that the presence of ethylene glycol (EG) played a crucial role in enhancing CO2 absorption capacity. By analyzing experimental results, it was determined that the synergistic interaction between IL and EG contributes to the improved CO2 absorption performance observed in the DESS.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Biotechnology & Applied Microbiology
Rashmi Walvekar, Ricky Saputra, Mohammad Khalid, Mahesh Vaka, Nabisab Mujawar Mubarak, Swapnil Dharaskar
Summary: This study successfully synthesized ammonium-ethylene glycol-based ternary deep eutectic solvents (TDESs) and measured their thermophysical properties. The results showed that the TDESs exhibited superior properties compared to their constituent components. The viscosity, pH, and density decreased, while electrical conductivity increased with increasing temperature. These observations can be attributed to excitation phenomena and hydrogen bonding delocalization.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Antai Zhu, Qinqin Xu, Jun Huang, Yue Li, Fazhi Zhang, Shangdong Qin, Shizhao Li, Chao Wan, Haibo Xie
Summary: This article presents a simplified method to fabricate gelatin into gel electrolytes using deep eutectic solvent. The resulting gel exhibits excellent mechanical properties, ionic conductivity, and high temperature performance, showing great potential for applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yu Chen, Li Fu, Yaoting Duan, Yue Bai, Xin Wang, Xuanchao Sun, Cong Liu, Bingyang Zhang, Zimeng Di
Summary: The effect of organic solvents on the conductivity of PEG-based DESs is investigated, and it is found that the presence of organic solvents can change the conductivity of PEG-based DESs depending on the concentration. The effect on the molar conductivity is different from the conclusion of conductivity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Weirong Wang, Michael M. Sabugaa, Subhash Chandra, Yuli Panca Asmara, Baraa Abd Alreda, Nestor Ulloa, Yasser Elmasry, Mustafa M. Kadhim
Summary: This study proposes a new approach to use choline chloride-based deep eutectic solvents (DESs) as cost-effective and anti-corrosion electrolytes for activated carbon-based electrochemical capacitors (ECs). The DESs of choline chloride/glycerol and choline chloride/propionic acid exhibit good viscosity, electrical conductivity, and electrochemical performance, with better performance at higher temperatures. The evaluation results suggest the potential application of these DES electrolytes in high-performance ECs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Electrochemistry
Fariha Ahmed, Domenec Paterno, Gurneet Singh, Sophia Suarez
Summary: The ion dynamics of null solvents consisting of 1ZnCl2:4EtG and 1ChCl:1ZnCl2:6EtG with the incorporation of 1M water, propylene carbonate (PC) or acetonitrile (AcN) were investigated. Various measurements, including 1H NMR spectra, spin-lattice relaxation time (T1) measurements, ionic conductivity, density and viscosity, were conducted to study the properties as a function of temperature. The results revealed increased free volume and dynamic heterogeneities in the mixtures, as well as selective interactions between hydrogen bond donors and acceptors, as well as with the co-solvents.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Elisabete S. C. Ferreira, Iuliia V. Voroshylova, Nadia M. Figueiredo, M. Natalia D. S. Cordeiro
Summary: The applicability of deep eutectic solvents is determined by their physicochemical properties, with alcohol-based DESs being more appealing in industrial applications due to their low viscosities. Modeling the composition-property relationships in polyalcohol-based mixtures is crucial for understanding and predicting their behavior. A study comparing physicochemical properties and structures of four choline chloride polyalcohol-based DESs is conducted, with simulations generally aligning well with experimental data.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Analytical
Zhong Jie Zhang, Xiang Ying Chen, Hua Jie Feng
Summary: This study introduced a deep eutectic solvent (DES) composed of choline chloride and ethylene glycol into water to produce DES-H2O electrolyte, enabling high voltage and wide temperature range operation for supercapacitors. Experimental results demonstrated that the molar ratio of DES played a crucial role in the solvent structure and supercapacitor performance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Haikun Guo, Leibo Li, Xiaolei Xu, Minghao Zeng, Shengchao Chai, Lixin Wu, Haolong Li
Summary: Semi-solid bulk supramolecular polymer (SP) materials were fabricated by using polyoxometalate (POM) nanoclusters as supramolecular cross-linkers to solidify a deep eutectic solvent (DES). The resulting materials exhibited high proton conductivity and mechanical strength, and formed a stable electrode-electrolyte interface by a melt-infiltration strategy, leading to improved performance in supercapacitors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Nattanon Joraleechanchai, Ruttiyakorn Donthongkwa, Nutthaphon Phattharasupakun, Salatan Duangdangchote, Poramane Chiochan, Kan Homlamai, Montree Sawangphruk
Summary: The presence of free carbonate-based solvent molecules in hybrid electrolyte systems can lead to safety concerns and decreased charge storage performance.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Wongduan Sroysee, Ketsuda Kongsawatvoragul, Phitchayapha Phattharaphuti, Pattranit Kullawattanapokin, Chonticha Jangsan, Worapol Tejangkura, Montree Sawangphruk
Summary: A high-performance sulfite biosensor was developed in this study by immobilizing SOx on AgNPs decorated 3D-rGO. The biosensor exhibited high sensitivity and selectivity towards sulfite detection, as well as demonstrated practical application in a continuous flow injection system. The sensor produced in this work shows potential practical application in real samples such as canned fruit products.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Praeploy Chomkhuntod, Kanit Hantanasirisakul, Salatan Duangdangchote, Nutthaphon Phattharasupakun, Montree Sawangphruk
Summary: The study shows that inserting highly charged cations in layered MnO2 cathode can stabilize MnO2 layers and enhance the kinetics of Zn2+ intercalation/deintercalation, leading to improved electrochemical performance in aqueous Zn-MnO2 batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Selvamani Vadivel, Krisara Srimanon, Montree Sawangphruk
Summary: Enormous effort has been devoted to improving the performance of Ni-rich cathodes by controlling surface residues and enhancing surface ordering. In this study, a strong alkali-mediated chemical oxidation method was used to directly synthesize Ni-rich NCA cathode under an oxygen atmosphere. The lithium residue over the material was controlled, and XPS studies revealed higher percentage of oxidized nickel at the surface compared to the core. The high initial coulombic efficiency and discharge capacity further confirmed the superior surface ordering and low surface residue.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Suchakree Tubtimkuna, Nutthaphon Phattharasupakun, Panyawee Bunyanidhi, Montree Sawangphruk
Summary: In this study, Ni-rich LiNi0.8Mn0.1Co0.1O2 or NMC811 cathode material was coated with crystalline ZrO2 nanoparticles using a green and scalable mechanofusion technique with an annealing process. The controllable synergistic effect of ZrO2 coating and Zr4+ doping was investigated, and it was found that the mechanofusion with post-annealing at 800 degrees C could fine-tune the shell thickness and doping gradient. The optimized NMC@Zr-800 material showed excellent capacity retention over 1000 cycles at a severe state-of-charge, attributed to the surface protection by the ZrO2 coating and Zr4+ doping.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Physical
Nichakarn Anansuksawat, Poramane Chiochan, Kan Homlamai, Nattanon Joraleechanchai, Worapol Tejangkura, Montree Sawangphruk
Summary: In this study, a multifunctional dry coating strategy was introduced on LiNi0.8Mn0.1Co0.1O2 (NMC811) with a thickness of approximately 100 nm at 1 wt%. The coating included high chemical stable Al2O3 (0.33 wt%) to reduce parasitic reactions, high electrical carbon black (0.33 wt%) to reduce internal charge transfer resistance, and high ionic conductive Li7La3Zr2O12 (0.33 wt%) to enhance Li+ diffusion. The coated NMC811 exhibited improved stability, achieving 1000 cycles with 80% capacity retention, compared to the pristine NMC811 with only 39% capacity retention. It also demonstrated a two-fold specific capacity at a high C-rate (2.0C) and excellent safety based on the UN38.3 standard.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Analytical
Phatsawit Wuamprakhon, Alejandro Garcia-Miranda Ferrari, Robert D. Crapnell, Jessica L. Pimlott, Samuel J. Rowley-Neale, Trevor J. Davies, Montree Sawangphruk, Craig E. Banks
Summary: Zero-emission hydrogen and oxygen production is crucial for the UK to achieve net-zero greenhouse gas emissions by 2050. Electrochemical techniques, such as water splitting with renewable energy, offer a unique approach to achieving zero emissions. However, there can be misleading improvements in the reported performance of electrocatalysts due to the use of different connection lengths in screen-printed electrodes. By using electrochemical impedance spectroscopy, the uncompensated ohmic resistance can be overcome, providing more accurate analysis.
Review
Chemistry, Physical
Suchakree Tubtimkuna, Dmitri L. Danilov, Montree Sawangphruk, Peter H. L. Notten
Summary: The demand for lithium-ion batteries has increased due to the adoption of electric vehicles. However, these batteries have a limited lifespan and insufficient capacity for long-range travel. Using core-shell structured cathode and anode materials is a promising approach to address these challenges. This paper reviews the challenges and solutions of using the core-shell strategy and highlights scalable synthesis techniques for pilot plant production.
Article
Chemistry, Physical
A. Kumaravel, S. Sathyamoorthi, S. Sadhana
Summary: In this study, activated biocarbon was synthesized using Datura stramonium seeds and fabricated into symmetrical supercapacitors with commercial-level mass loadings. The results showed that the synthesized biocarbon exhibited high specific capacitance, excellent efficiency, and retained its performance after a large number of cycles.
Article
Chemistry, Physical
Puttida Nanthamitr, Chanikarn Tomon, Chonticha Jangsan, Thitiphum Sangsanit, Worapol Tejangkura, Nattanon Joraleechanchai, Montree Sawangphruk
Summary: This study aims to reduce the drawbacks of NMC811 cathode materials by blending them with LMO. The blended NMC811/LMO cathode showed improved capacity retention and increased specific capacity, making it a promising candidate for applications such as long-range electric vehicles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Arisa Phukhrongthung, Pawin Iamprasertkun, Aritsa Bunpheng, Thanit Saisopa, Chakkrit Umpuch, Channarong Puchongkawarin, Montree Sawangphruk, Santamon Luanwuthi
Summary: This study investigates the use of hierarchical porous carbon derived from oil palm leaves in a water-in-salt supercapacitor and explores the impact of anion identity on the electrical performance of the carbon electrode. The results show that the carbon had a hierarchical porous structure with a high surface area. When using a LiTFSI electrolyte, the carbon electrode exhibited higher specific capacitance with a wider potential window, while the use of a LiCl electrolyte showed higher specific capacitance due to the smaller size of the Cl- anion. This research contributes to the understanding of using water-in-salt electrolytes in carbon-based supercapacitors and provides insights into developing low-cost, high-performance supercapacitors that can operate in a wider voltage range.
Article
Chemistry, Multidisciplinary
Surasak Kaenket, Salatan Duangdangchote, Kan Homlamai, Nattanon Joraleechanchai, Titipum Sangsanit, Worapol Tejangkura, Montree Sawangphruk
Summary: This study produced large-scale 18650 cylindrical Li-S battery cells with a sulphur loading content of 5 mg cm(-2). It was found that a key failure mode of cylindrical Li-S battery cells is the severe capacity fading during the galvanostatic charge-discharge process due to the corrosion of the electrodes, the electrolyte decomposition, and the severe polysulphide shuttling effect.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Chalita Aphirakaramwong, Oluseun Akintola, Christian T. Plass, Montree Sawangphruk, Winfried Plass, Andrea Balducci
Summary: Potassium-based energy storage devices are gaining attention as alternatives to lithium and sodium systems. Metal-organic frameworks (MOFs) are considered promising electrode materials for these devices. In this study, the MOF JUMP-1 and its potassium-exchanged analog JUMP-1(K) were synthesized and tested as anode materials in a potassium-based system. The results showed that JUMP-1(K) exhibited significantly improved capacity and stability compared to JUMP-1.
Article
Chemistry, Physical
Panyawee Bunyanidhi, Nutthaphon Phattharasupakun, Salatan Duangdangchote, Surat Prempluem, Nattanon Joraleechanchai, Montree Sawangphruk
Summary: This research systematically examines the impact of atomic cation dopants and metal oxide coatings, including their respective oxidation states, on the electrochemical performance of Ni-rich NCA90 cathode materials. The study reveals that high annealing temperatures can produce dopants with varied oxidation states, which effectively mitigate phase transitions and enhance the structural stability of the materials. Additionally, the incorporation of tungsten dopants significantly modulates the kinetics of lithium transfer throughout the battery cycling process. This research provides important insights into optimizing the electrochemical performance of Ni-rich cathode materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Kan Homlamai, Nichakarn Anansuksawat, Nattanon Joraleechanchai, Poramane Chiochan, Thitiphum Sangsanit, Worapol Tejangkura, Thana Maihom, Jumras Limtrakul, Montree Sawangphruk
Summary: Controversy exists over whether particle cracking of Ni-rich layered oxide cathode materials occurs at primary particles or grain boundaries. This study demonstrates that microcracking in NMC811 does not occur at single crystalline primary particles, even under severe conditions. Single-crystal NMC811 exhibits superior mechanical stability compared to polycrystal NMC811, resulting in higher capacity retentions after 1000 cycles.
CHEMICAL COMMUNICATIONS
(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)
