Review
Chemistry, Multidisciplinary
Shaofeng Wang, Ying Guan, Fangqun Gan, Zongping Shao
Summary: This paper discusses the application of aqueous battery systems in response to environmental and safety concerns, with a focus on aqueous dual-ion batteries (ADIBs). The selection of charge carriers, electrode materials, and electrolytes are presented, along with emphasis on insertion mechanisms to enhance the practical performance of ADIBs.
Article
Electrochemistry
Shelton F. Kuchena, Ying Wang
Summary: The research focuses on the use of non-metal ammonium ions as effective charge carriers in battery systems and the synthesis of polyaniline-intercalated vanadium oxide to enhance NH4+ ion intercalation kinetics. By optimizing the composition of the PVO electrode, the study demonstrates excellent electrochemical performance for emerging aqueous non-metal batteries.
ELECTROCHIMICA ACTA
(2022)
Review
Chemistry, Multidisciplinary
Zhiheng Li, Jian Tan, Caiyun Gao, Yuan Wang, Yonggang Wang, Mingxin Ye, Jianfeng Shen
Summary: Organic compounds are attractive alternatives to conventional inorganic materials for aqueous zinc-ion batteries, due to their high theoretical capacities, structural tunability, controllable synthesis, and environmental friendliness. This review provides a systematic overview of recent developments, energy storage mechanisms, and design strategies for aqueous Zn-organic batteries (ZOBs). It summarizes the ion storage mechanisms, analyzes the dynamic behavior, and highlights the synthesis strategies of organic electrode materials. It also discusses strategies to improve the electrochemical performance and the challenges for practical applications of aqueous ZOBs.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Tianhao Wang, Shengwei Li, Xinger Weng, Lei Gao, Yu Yan, Ning Zhang, Xuanhui Qu, Lifang Jiao, Yongchang Liu
Summary: In this study, hierarchically porous V2O5 nanosheets vertically grown on carbon cloth were prepared, providing additional ion-diffusion channels and abundant active sites. The V2O5/C electrode exhibited exceptional high-rate capability and ultralong cycling durability in rechargeable aqueous zinc-based batteries. Moreover, the quasi-solid-state wearable zinc batteries employing the porous V2O5/C cathode demonstrated respectable performance even under severe deformations and low temperatures.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Qiang Pang, Wei He, Xiangyu Yu, Siyu Yang, Hainan Zhao, Yao Fu, Mingming Xing, Ying Tian, Xixian Luo, Yingjin Wei
Summary: In this study, an Al0.2V2O5 cathode material for AZIBs is introduced, which shows a higher Zn2+ diffusion coefficient and better stability than V2O5. It exhibits excellent electrochemical performance and long-term cycling stability, making it a promising candidate for large-scale energy storage applications.
APPLIED SURFACE SCIENCE
(2021)
Review
Materials Science, Multidisciplinary
Limin Zhou, Luojia Liu, Zhimeng Hao, Zhenhua Yan, Xue-Feng Yu, Paul K. Chu, Kai Zhang, Jun Chen
Summary: This study describes common proton-storage electrode materials for AMPBs and discusses their desirable features, as well as common problems plaguing aqueous electrolytes and metal anodes in AMPBs. The crucial importance of stable electrolyte/electrode interfaces and homogeneous ion distributions in charging/discharging processes is highlighted.
Article
Chemistry, Physical
Puja De, Joyanti Halder, Surbhi Priya, Alok Kumar Srivastava, Amreesh Chandra
Summary: An interconnected sheet-like morphology of low-cost V2O5 is used as a cathode material for aluminum-ion batteries to improve their capacity, rate capability, and cycling stability. The V2O5-based cathode shows excellent performance, with an initial discharge capacity of around 140 mA h g-1 and a capacity retention of 96% after 1000 cycles. The fast intercalation and deintercalation of Al3+ within the stacked layers of V2O5 contribute to these high-performance characteristics, which have been previously ignored in aluminum-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Qiangchao Sun, Linhui Chang, Yanbo Liu, Wei Nie, Tong Duan, Qian Xu, Hongwei Cheng, Xionggang Lu
Summary: Based on the charge intercalation mechanism, an original chrysanthemum-like organic conductive polyaniline (PANI) intercalated hybridized cathode (PANI0.22 center dot V2O5 center dot 0.88H2O) is developed. The electrostatic interactions between Zn2+ and the V-O layer can be effectively weakened due to the pillars effects and unique pi-conjugated structure of PANI. The 3D micromorphology provides abundant active sites for Zn2+ transfer and intimate contact with electrolytes. The chrysanthemum-like PANI-intercalated V2O5 exhibits a high specific capacity and excellent cycling stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
A. E. Candia, S. J. Rodriguez, E. A. Albanesi, G. Bernardi, D. Fregenal, G. E. Zampieri, M. C. G. Passeggi, G. Ruano
Summary: This article investigates the effect of adding aluminum fluoride electrolytes on the graphite structure, finding that the reaction is spontaneous and non-reactive, which may contribute to the development of novel quasi-2D devices.
Article
Materials Science, Multidisciplinary
Yanwei Li, Ping Xu, Jiqiong Jiang, Jinhuan Yao, Bin Huang, Jianwen Yang
Summary: Ultra-large V2O5 xerogel flakes were synthesized and used as cathode materials for aqueous Zn-ion batteries, exhibiting superior performance possibly due to its unique 2D nanoflake structure that offers continuous transport paths and shortens Zn2+ diffusion length.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Lichun Xue, Yueqing Li, Wentao Lin, Feiming Chen, Guichan Chen, Dengjie Chen
Summary: Hollow porous V2O5 microspheres were obtained by a facile solvothermal method and exhibited good capacity, rate capability, and stability in lithium-ion batteries. The study also described the variation of charge-transfer and bulk resistances in different charge/discharge states and suggested the broad application of the prepared microspheres and electrode kinetics in developing efficient electrodes for LIBs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yunxiao Tong, Xiaoman Li, Senda Su, Jinzhen Li, Junzhuo Fang, Bin Liang, Jianhua Hou, Min Luo
Summary: In this study, Li0.45V2O5.089H(2)O (LVO) was successfully synthesized and showed excellent performance with high specific capacitance and long lifespan. Additionally, LVO-based AZIBs exhibited superior performance due to the synergistic insertion mechanism of Zn2+ and H+.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Saurabh Kumar, Mahatim Singh, Rakesh Mondal, Mridul Kumar, Rajiv Prakash, Preetam Singh
Summary: Due to the limited reserve and increasing price of lithium, alternatives to Li-ion batteries are rapidly growing. This study proposes a reversible sodium-ion battery cathode material made of 3D framework-structured molybdenum polyanionic phosphate (Mo2P2O11). The material exhibits reversible intercalation and stable charge storage performance, opening up a new route for the development of sodium-ion batteries.
Review
Nanoscience & Nanotechnology
Guojin Liang, Funian Mo, Xiulei Ji, Chunyi Zhi
Summary: Non-metallic charge carriers play a crucial role in aqueous batteries, offering improved performance and reduced manufacturing costs. Through insertion into electrode frameworks and serving as reversible redox centers, non-metallic charge carriers demonstrate superior performance compared to metallic counterparts.
NATURE REVIEWS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Meng Huang, Xuanpeng Wang, Xiong Liu, Liqiang Mai
Summary: The highly dynamic nature of grid-scale energy systems requires fast kinetics in energy storage and conversion systems. Rechargeable aqueous batteries, with their high ionic diffusivity, safety, and low cost, are a promising solution for energy storage in renewable-energy grids. Recent research has focused on developing electrode materials that enable fast ionic storage in aqueous electrolytes. This review summarizes breakthroughs in fast ionic storage in aqueous battery materials, including 1D/2D/3D and over-3D tunnel materials.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Tatjana B. Novakovic, Stefan M. Pavlovic, Maja C. Pagnacco, Predrag T. Bankovic, Zorica D. Mojovic
Summary: A novel and simple electrochemical sensor for the determination of gallic acid was developed using alumina-modified carbon paste electrode. The performance of the sensor was evaluated by cyclic voltammetry and square-wave voltammetry techniques, demonstrating an irreversible diffusion-controlled oxidation of gallic acid. The sensor exhibited a linear relationship between peak current and concentration in the range of 1.4 to 115 μM, with a detection limit of 0.8 μM. The ability of the sensor to detect gallic acid in wine samples was successfully validated.
Article
Electrochemistry
Bojana Nedic Vasiljevic, Aleksandar Z. Z. Jovanovic, Slavko V. V. Mentus, Natalia V. V. Skorodumova, Igor A. A. Pasti
Summary: Surface modification with rhodium through galvanic displacement significantly improves the catalytic activity of cobalt for hydrogen and oxygen evolution reactions in alkaline media. The overpotential for hydrogen and oxygen generation is reduced by 0.16 V and 0.06 V, respectively, after only 20 seconds of galvanic displacement. Density Functional Theory calculations indicate that the reactivity of the Rh-modified Co(0001) surface is different from that of the clean Co(0001) surface.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Marjetka Savic, Aleksandra Janosevic Lezaic, Nemanja Gavrilov, Igor Pasti, Bojana Nedic Vasiljevic, Jugoslav Krstic, Gordana Ciric-Marjanovic
Summary: Composites of N,O-doped carbon/ZnO/ZnS and N,O-doped carbon/ZnO (C-(MOF-5/PANI)) were synthesized by the carbonization of MOF-5/PANI composites. These composites were comprehensively characterized and exhibited high S-BET, electrical conductivity, and specific capacitance. Acid etching treatment further improved the surface area and capacitance, making them promising electrode materials for supercapacitors.
Article
Chemistry, Physical
Sanjin J. Gutic, Dino Metarapi, Aleksandar Z. Jovanovic, Goitom K. Gebremariam, Ana S. Dobrota, Bojana Nedic Vasiljevic, Igor A. Pasti
Summary: In order to efficiently replace fossil fuels and address the growing energy crisis, hydrogen production has become a focus. This study utilized Kinetic Monte Carlo simulations to demonstrate that hydrogen evolution reaction (HER) can be enhanced by hydrogen spillover to the support under certain conditions. Based on these findings, a series of reduced graphene-oxide-supported catalysts were synthesized and compared with pure metals for HER activity in alkaline media. The results showed that the support had a negative effect on Ag, Au, and Zn, but enhanced HER activity for Pt, Pd, Fe, Co, and Ni. The study provides insights into metal-support interface engineering for effective HER catalysts and guidelines for selecting novel catalyst-support combinations for electrocatalytic hydrogen production.
Article
Food Science & Technology
Ammar Al-Hamry, Tianqi Lu, Jing Bai, Anurag Adiraju, Tharun K. Ega, Igor A. Pasti, Olfa Kanoun
Summary: Different environmental parameters and contaminations during food processing and storage can lead to food spoilage and the loss of nutritional value. Therefore, developing reliable and cost-effective sensor devices for precise monitoring is crucial. This paper demonstrates the effectiveness of Poly-(diallyl-dimethyl ammonium chloride)/reduced Graphene oxide (PDAC/rGO) films for monitoring temperature, relative humidity, volatile organic compounds, and detecting the presence of pesticides.
Article
Nanoscience & Nanotechnology
Mila Krstajic N. Pajic, Ana S. Dobrota, Anca Mazare, Sladana Durdic, Imgon Hwang, Natalia V. Skorodumova, Dragan Manojlovic, Rastko Vasilic, Igor A. Pasti, Patrik Schmuki, Uros Lacnjevac
Summary: This study reveals that the surface effects of hydrogenated TiO2 nanotube arrays can convert Os, an unexplored platinum group metal, into a highly active electrocatalyst for the hydrogen evolution reaction (HER). The optimized Os@TNT composite exhibits low overpotential and stable performance in acidic medium, offering new possibilities for the fabrication of cost-effective PGM-based catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Noha A. Elessawy, Gordana Backovic, Janesuda Hirunthanawat, Marta Martins, Lazar Rakocevic, Marwa H. Gouda, Arafat Toghan, Mohamed E. Youssef, Biljana Sljukic, Diogo M. F. Santos
Summary: In this study, PET bottle waste was transformed into nitrogen-doped graphene (NG) as a valuable catalyst support, and NG/Pt electrocatalysts were prepared for direct borohydride peroxide fuel cells (DBPFCs). The results show that NG/Pt catalysts display high catalytic activity, and a DBPFC using NG/Pt_1 catalyst achieved a high power density. This research has the potential to lower the cost of fuel cells and boost the usage of electrochemical energy devices.
Article
Chemistry, Multidisciplinary
Ammar Al-Hamry, Tianqi Lu, Haoran Chen, Anurag Adiraju, Salem Nasraoui, Amina Brahem, Danica Bajuk-Bogdanovic, Saddam Weheabby, Igor A. Pasti, Olfa Kanoun
Summary: This study investigates the relative humidity sensor properties of graphene oxide (GO) and graphene oxide/multiwalled nanotubes (GO/MWNTs) composites. Composite sensors were fabricated using direct laser scribing and characterized using various spectroscopies and microscopy techniques. The results show that GO/MWNT-based humidity sensors are more stable and repeatable, and they have faster response/recovery times compared to GO sensors. The introduction of GO/MWNT hybrid and laser direct writing proves to be advantageous in producing stable structures and sensors.
Article
Food Science & Technology
Vedran Milankovic, Tamara Tasic, Milica Pejcic, Igor Pasti, Tamara Lazarevic-Pasti
Summary: Coffee is a popular beverage, but the disposal of spent coffee grounds (SCGs) can harm the environment. This study explored the interaction between SCGs and organophosphate pesticides, specifically malathion and chlorpyrifos. The results showed that SCGs can effectively remove these pesticides from water and fruit extracts without producing toxic byproducts.
Article
Food Science & Technology
Tamara Tasic, Vedran Milankovic, Katarina Batalovic, Stefan Breitenbach, Christoph Unterweger, Christian Fuerst, Igor A. Pasti, Tamara Lazarevic-Pasti
Summary: This study shows that carefully tuned viscose-derived activated carbon fibers can efficiently remove pesticides from liquid samples, even in complex matrices. The selected materials are not affected by complex matrices of real samples and can be regenerated multiple times without performance losses. Adsorptive removal of food contaminants can effectively improve food safety and quality, unlike other methods that negatively affect the nutritional value of food products. Data-based models can guide the synthesis of novel adsorbents for desired applications in food processing.
Article
Chemistry, Physical
Goitom K. Gebremariam, Aleksandar Z. Jovanovic, Igor A. Pasti
Summary: This study evaluates the HER kinetic parameters of different metals in various electrolytes, showing that the shape of HER volcano curves remains largely unchanged in different electrolytes. The presence of surface oxide can have both positive and negative effects on HER kinetics, depending on the metal-electrolyte combination. The study also provides a comprehensive overview of HER kinetic data from diverse literature sources, offering practical insights for the development of new catalytic materials and optimization of electrolyte formulations for enhancing HER.
Article
Chemistry, Multidisciplinary
Daniela Neumueller, Lidija D. Rafailovic, Aleksandar Z. Jovanovic, Natalia V. Skorodumova, Igor A. Pasti, Alice Lassnig, Thomas Griesser, Christoph Gammer, Juergen Eckert
Summary: Highly efficient non-noble metal catalysts are crucial for hydrogen generation through electrolysis, and the synthesis of catalytic heterostructures containing established Ni with surface NiO, Ni(OH)(2), and NiOOH domains has shown promising results. This study investigates the intrinsic catalytic activity of pure Ni and the impact of partial electrochemical oxidation of magnetron sputter-deposited Ni surfaces through various experimental techniques and simulations. The results demonstrate that surface oxidation increases the intrinsic hydrogen evolution reaction (HER) activity of nickel and improves catalyst durability.
Review
Biochemistry & Molecular Biology
Ines Belhaj, Monica Faria, Biljana Sljukic, Vitor Geraldes, Diogo M. F. Santos
Summary: Direct liquid fuel cells (DLFCs) use liquid fuel instead of hydrogen and have higher energy densities and fewer issues with transportation and storage. The direct borohydride-hydrogen peroxide fuel cell (DBPFC) is a promising technology that uses sodium borohydride (NaBH4) as fuel and hydrogen peroxide (H2O2) as oxidant. Introducing H2O2 as the oxidant increases the cell voltage compared to direct borohydride fuel cells operating on oxygen.
Article
Chemistry, Physical
Igor A. Pasti, Ana S. Dobrota, Dmitri B. Migas, Boerje Johansson, Natalia V. Skorodumova
Summary: The development of new electrochromic materials and devices, such as smart windows, has a significant impact on energy efficiency in modern society. Nickel oxide is a crucial material in this technology, and its Ni-deficient form exhibits anodic electrochromism. By using DFT+U calculations, researchers have shown that the generation of nickel vacancies leads to the formation of hole polarons localized at nearby oxygen sites. These hole polarons can be filled by Li insertion or electron injection, resulting in a transition from an oxidized (colored) to a reduced (bleached) state. This study suggests a new mechanism for Ni-deficient NiO electrochromism based on the formation and annihilation of hole polarons in oxygen p-states rather than the change in Ni oxidation states (Ni2+/Ni3+ transition).
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Marina simovic Pavlovic, Maja Pagnacco, Dimitrije Mara, Aleksandra Radulovic, Bojana Bokic, Darko Vasiljevic, Branko Kolaric
Summary: This study investigates the natural optical structure of butterfly wings and explores the influence of nanoscale corrugations on material's optical response. Additionally, the study demonstrates the possibility of using holography to monitor dynamics in real time.
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
(2023)
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)
