Article
Energy & Fuels
Wei Li, Yuli Zhang, Longjia Yuan, Kaibo Tian, Hongwei Yue, Tingting Li, Pinjiang Li, Lijun Wu, Yuanhao Gao, Xiaojie Lou
Summary: In this study, a three-dimensional Ni3N mesh with a mesoporous structure was constructed as the electrode material for hybrid supercapacitors, improving its energy storage performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Dong Hyun Lee, Juyoung Baek, Dong Hwan Kim, Jong Wook Roh, Jeongmin Kim, Damin Lee
Summary: Transition metal-based binary and ternary compound arrays were grown directly on a porous Ni foam substrate using a one-step hydrothermal method. The ternary electrode with Ni, Cu, and Zn ions showed a larger surface area and higher entropy than the binary compounds, leading to a shorter diffusion path for electrolyte ions and improved charge transfer. The optimized NixCuyZnz(CO3)(OH)(2) compound exhibited a higher specific capacity and cycling stability than the binary electrode. An asymmetric supercapacitor fabricated with this compound showed high energy density and electrical properties in an illuminated LED device.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Willian G. Nunes, Andre N. Miranda, Bruno Freitas, Rafael Vicentini, Aline C. Oliveira, Gustavo Doubek, Renato G. Freitas, Leonardo M. Da Silva, Hudson Zanin
Summary: The study investigates charge-storage phenomenon in an electrode composed of highly defective nickel oxide nanostructures supported on carbon nanofibers immersed in an Li+-based aqueous electrolyte using Raman spectroscopy under dynamic polarization conditions. The formation of Li2SO4∙H2O during discharge and the phase transformation of NiO to NiOOH were verified. The electrode material showed outstanding stability with 98% coulombic efficiency after 10,000 charge-discharge cycles, attributed to a synergism between CNFs and NiO ensuring rapid electron transport. DFT simulation elucidated that compressive stress and Ni-site displacement promote NiO/Ni(OH)2/NiOOH transition.
Article
Chemistry, Multidisciplinary
Yafen Tian, Xiangyu Zhu, Muhammad Abbas, Daniel W. Tague, John P. Ferraris, Kenneth J. Balkus
Summary: In this study, two-dimensional mesoporous hexagonal carbon sheets (MHCSs) were prepared using mesoporous Mg(OH)(2) hexagonal sheets as a template and acetylene gas as the carbon precursor. The MHCSs exhibited high specific surface area and a hierarchical microporous-mesoporous structure, enabling rapid ion transport and superior electrochemical performance.
Article
Chemistry, Physical
Zhongchun Li, Jialun Yu, Chong Shi, Hao Su, Lu Bai, Limi Yan
Summary: Hierarchical nickel hydroxide (HNHH) with large specific surface area and rich mesopores was synthesized through a solvothermal strategy. The HNHH-120 electrode exhibited a specific capacity of 718.0 C g-1 at 0.5 A g-1, and the HNHH-120//activated carbon hybrid supercapacitor achieved a specific capacitance of 95.0 F g-1 at the same current density. The excellent energy storage performance of HNHH-120 is attributed to its unique structural characteristics. Evaluation: 8/10.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Dorcas Zide, Cecil Felix, Tobie Oosthuysen, Bernard Jan Bladergroen
Summary: In this study, beta-Ni(OH)(2) was used as the starting material and partially substituted with Mg2+ and Mn2+ to optimize the performance of the positive electrode materials for nickel-iron batteries. The resulting Ni0.95Mg0.05(OH)(2) and Ni0.9Mn0.1(OH)(2) compositions showed promising electrochemical activities, with improved cycle life and discharge capacities compared to the undoped Ni(OH)(2) electrode.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Energy & Fuels
Zhiwei Tian, Qingli Sui, Chuhan Zhang, Cuili Xiang, Lixian Sun, Fen Xu, Yongjin Zou
Summary: This study reports a facile synthetic method for the preparation of NiCo hydroxide@Ni-MOF hollow prisms for application in supercapacitors. The hollow structure inhibits the agglomeration of Ni-MOF nanosheets and exposes more active sites, enhancing electrolyte ion diffusion. The obtained sample exhibits good electrochemical properties with a high specific capacitance and energy density, as well as excellent cycling stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Tianyu Shi, Chenyuan Zhao, Yuxiang Zhou, Haihong Yin, Changqing Song, Lin Qin, Zhiliang Wang, Haibao Shao, Ke Yu
Summary: By designing a special core-shell structured cathode, the challenges hindering the practical applications of lithium-sulfur batteries have been overcome, leading to improved battery performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Alireza Rahmanian, Leila Naji
Summary: The morphology and electrochemical properties of Ni(OH)2 nanostructures can be controlled by different electrochemical modes and the addition of different substances, with GO showing a significant promoting effect on the electrochemical growth of the nanostructures.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Dhananjaya Merum, Nargish Parvin, Surya Veerendra Prabhakar Vattikuti, Ramesh Reddy Nallapureddy, Rosaiah Pitcheri, Mohd. Shkir, M. Aslam Manthrammel, Arghya Narayan Banerjee, Sang Woo Joo
Summary: Researchers successfully incorporated cobalt dopants in nickel vanadates and synthesized porous 3D oval-shaped particles using hydrothermal synthesis. The interconnected particles and porous nature enhanced the accessibility to active species and improved charge transfer kinetics. The cobalt dopants also improved electronic conductivity and enriched redox chemistry, resulting in outstanding cyclic stability, high capacitance, and energy density.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Lingna Kong, Hongwei Tang, Xiaoyan Wang, Yue Lei, Bao Li, Kun Chang, Zhaorong Chang
Summary: This paper employs atmospheric reflux in water to conduct in situ sulfurization, forming a nickel sulfide layer on the surface of spherical nickel hydroxide particles, significantly improving the conductivity; experimental results show that the synthesized spherical Ni(OH)2@NiS material exhibits excellent electrochemical performance as the cathode active material for nickel-iron batteries.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Ziang Gao, Huihui Wang, Xia Cui
Summary: In this study, nickel-vanadium binary sulfide (NVS) was directly grown on nickel-vanadium layered double hydroxides (NiV-LDH) using a combination of hydrothermal and gas-phase vulcanization methods, forming a unique structure (NVS@NiV-LDH). The growth of NVS increased the number of active sites and enhanced the structure's stability. The NVS@NiV-LDH electrode exhibited a high specific capacitance of 465.33 F g-1 at a high current density of 6 A g-1 and excellent cycle stability of 90.69% after 5000 charge-discharge cycles at 12 A g-1. An asymmetric supercapacitor (NVS@NiV-LDH//AC) was also assembled, achieving a high energy density of 133.98 Wh kg-1 at a high power density of 15,120 W kg-1, with a superior cycling stability (82.8% of initial specific capacitance after 5000 cycles at 12 A g-1). These findings demonstrate the optimistic prospect of NVS@NiV-LDH as electrode materials for supercapacitor applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Yana Liu, Juanzhe Yu, Min Jiang, Jie Hou, Yunfeng Zhu, Jiguang Zhang, Zhixin Ba, Liquan Li
Summary: A series of flower-like Ni-Fe layered double hydroxides (LDHs) were successfully synthesized and used as cathode materials for nickel-metal hydride batteries (Ni-MH batteries). The 4Ni-Fe LDH electrode displayed the highest high-rate discharge property and the most excellent cycling performance. The improvement can be attributed to the formation of LDHs, as well as their unique morphology and enlarged interlayer spacing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yi-Wen Long, Hong-Yan Zeng, Hao-Bo Li, Sheng Xu, Shi-Bing Lv, Zhen Li, Zi-Feng Tian
Summary: The pineapple flower-like hierarchical Co3O4@CoAl-layered double hydroxides were designed and synthesized for supercapacitors, showing superior electrochemical performance, particularly in terms of energy density, rate capability, and long-term cycle stability.
APPLIED CLAY SCIENCE
(2021)
Article
Chemistry, Physical
Damin Lee, Sanjay Mathur, Kwang Ho Kim
Summary: By fabricating open architecture and porous NiZn(CO3)(OH)2-Ni-2(CO3)(OH)2 bilayers on a nickel foam substrate, higher mechanical stability and enhanced electrochemical performance were achieved, with excellent specific capacitance and cycling stability observed. The asymmetric two-layered NiZn(CO3)(OH)2-Ni-2(CO3)(OH)2//graphene electrodes provided enough capacitive energy to illuminate a LED light, making them promising candidates for practical applications due to their hierarchical architecture and large surface area.
Article
Materials Science, Multidisciplinary
V Manikandan, R. Marnadu, J. Chandrasekaran, S. Vigneselvan, R. S. Mane, Craig E. Banks, Ali Mirzaei
Summary: An ultrahigh photosensitive diode was developed using Cu-doped CeO2 thin film with good structural arrangement and mechanical properties. The electrical conductivity was improved by Cu-doping, which altered the bandgap energy and resulted in superior photoresponsivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Analytical
Satish Ekar, Umesh T. Nakate, Yogesh B. Khollam, Shoyebmohamad F. Shaikh, Rajaram S. Mane, Abu ul Hassan S. Rana, Marimuthu Palaniswami
Summary: This study explores the green synthesis of nanocrystalline titanium dioxide (TiO2) using Ganoderma lucidum mushroom extract. The as-synthesized Pd-TiO2 sensor demonstrates efficient chlorine gas sensing properties at low operating temperatures.
Article
Nanoscience & Nanotechnology
Sarah Choi, Anseong Park, Dongho Seo, Won Bo Lee, Ki Min Nam, YongJoo Kim, Jinho Chang
Summary: This article explores the enhancement of redox-reversibility in electroactive species for energy storage systems. The study demonstrates that ascorbic acid can become redox-reversible when confined in microporous carbon regimes. The research uses molecular dynamics simulations to explain the origin of the enhanced redox-reversibility. Furthermore, a prototype energy storage device using redox-reversible ascorbic acid in microporous carbon is demonstrated, showing the feasibility of ascorbic acid as a potential redox electrolyte.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Energy & Fuels
Suraj Bulakhe, Nanasaheb Shinde, Jeom-Soo Kim, Rajaram S. Mane, Ramesh Deokate
Summary: This article presents recent advances in nickel-based catalysts for water splitting, including the dependence of current density on applied potential, overpotentials, and Tafel plots. Various synthesis methods and structural variations have been reported to identify the final active structure. Disputes and outlook perspectives of nickel-based electrolytes in the water splitting process are also highlighted based on previously published work on both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activities.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Analytical
Sungjun Son, Jeongmin Yeo, Jinho Chang
Summary: This article investigates the influence of alkali metal salt (LiTFSI) on the formation of interfacial layer (IFL) in water-in-salt electrolyte solution (WiSE) through voltammetric measurements. The results demonstrate that the Cl-/Cl-3(-) redox reaction can recognize the IFL formed on a positively charged electrode, while other halide/halogen redox reactions cannot differentiate.
ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
V Manikandan, S. Vigneselvan, Iulian Petrila, Rajaram S. Mane, Ajeet Singh, Kamil Sobczak, J. Chandrasekaran
Summary: The Sn-doping effect on the SO2 gas sensing properties has been investigated, and it was found that the Sn-doped particles showed improved adsorption and sensing efficiency for SO2 gas, with a faster response time and higher reproducibility.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Nanasaheb M. Shinde, Siddheshwar D. Raut, Balaji G. Ghule, Ramesh J. Deokate, Sandesh H. Narwade, Rajaram S. Mane, Qixun Xia, James J. Pak, Jeom-Soo Kim
Summary: In this work, 3-D dandelion flower-like nickel chloride (NiCl2) nanostructures were synthesized for the first time through glycerol-mediated self-growth on nickel-foam (NiF) using a room-temperature wet chemical method. These NiCl2 flowers exhibited excellent electrocatalytic performance for the hydrogen evolution reaction (HER), outperforming NiF and NiCl2 electrodes prepared without glycerol. The glycerol-based NiCl2 electrode also showed superior reaction kinetics and stability compared to the other two electrodes.
Article
Energy & Fuels
Zeenat A. Shaikh, Nanasaheb M. Shinde, Pritamkumar V. Shinde, Sushil S. Sangale, Siddheshwar D. Raut, Shoyebmohamad F. Shaikh, Satish U. Ekar, Mohaseen S. Tamboli, Rajaram S. Mane
Summary: In this study, a stretchable, foldable, and flexible commercial sponge has been converted into a conducting material by incorporating polypyrrole (PPy). Bismuth oxide (Bi2O3) electrode material with a wool ball-like morphology is synthesized over PPy-coated sponge, creating a hybrid Bi2O3@PPy electrode. The unique morphology of Bi2O3 and the porous structure of PPy@sponge result in a high number of active sites and short diffusion pathways, enabling efficient electron-ion transportation. A pencil-type asymmetric supercapacitor using Bi2O3@PPy//graphite rod electrodes delivers high energy and power densities, as well as excellent cycling stability.
Article
Electrochemistry
Heejung Chung, Woojeong Lim, Cheolmin Park, Byungsun Jeon, Jongmin Park, Jinho Chang
Summary: In this study, a classical redox mediated metal (Au) indicator electrode approach was used to investigate the enzymatic kinetics of horseradish peroxidase (HRP) for the oxidative conversion of redox substrates ferrocenemethanol (FcMeOH) and hydroquinone (H2Q) at low HRP concentrations. The results showed that the reactivity of HRP towards FcMeOH was inhibited by conjugation with model proteins, while the reactivity towards H2Q was not affected. The study also revealed the importance of structural changes in HRP for the enzymatic reactivity. Rating: 8/10.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Shoyebmohamad F. Shaikh, Sikandar Aftab, Bidhan Pandit, Abdullah M. Al-Enizi, Mohd Ubaidullah, Satish Ekar, Sajjad Hussain, Yogesh B. Khollam, Pravin S. More, Rajaram S. Mane
Summary: The successful deployment of sodium-ion batteries requires high-performance, sustainable, and cost-effective anode materials with a high current density. In this study, sodium disulphide (NiS2) was prepared as a composite with activated carbon (C) using a hydrothermal synthesis route. The NiS2/C composite exhibited well-defined diffraction peaks of NiS2 in the X-ray diffraction pattern, and had a surface area close to 148 m^2 g^-1 according to the Brunauer-Emmett-Teller (BET) study. With a current density of 50 mA g^-1, the NiS2/C composite showed a high capacity of 480 mA h g^-1 during the initial cycle, which decreased to 333 mA h g^-1 after 100 cycles. It also demonstrated exceptional rate capability, delivering a capacity of 270 mA h g^-1 at a high current density of 2000 mA g^-1. Ex situ X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analyses provided insights into the chemical bonding and changes during electrochemical redox cycling, improving the understanding of the sodium storage mechanism and offering guidance for developing high-performance electrode materials for rechargeable sodium-ion batteries.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
V. Manikandan, G. Ayyannan, Iulian Petrila, Rajaram S. Mane, Kamil Sobczak, J. Chandrasekaran, Robert D. Crapnell, Craig E. Banks
Summary: Ni-doped alumina nanoflakes show efficient and fast response to target gas SO3 at different concentrations, with improved response and shorter response time at higher temperatures. The sensor demonstrates stability and reproducibility over a long period of testing, making it suitable for practical applications. The Ni-dopant enhances oxygen adsorption and active sites, contributing to the excellent sensing properties.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sukhvinder Kaur Sukhmani, Rajaram S. Mane, Tabassum A. J. Siddiqui, Shoyebmohamad F. Shaikh, Sajjad Hussain
Summary: The recent trend in research is to use abundant seawater to modify metal surfaces for energy generation, storage, transport, and water-splitting technologies. This study focuses on using seawater as a solvent to modify the surface of 3D nickel-foam (NiF) to Na2O-NiCl2@NiF as an electrode material in electrochemical supercapacitors and water-splitting electrocatalysis applications. The Na2O-NiCl2 obtained from this process has shown excellent electrocatalytic activities and moderate energy storage ability, making it a promising material for energy and water applications.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Sehyeok Ki, Anseong Park, Won Bo Lee, YongJoo Kim, Jinho Chang
Summary: Here, we demonstrate the formation of a porous iodine interphase with positively charged electrolyte channels on a Pt ultramicroelectrode, which enhances the electro-oxidation of I- in an aqueous medium. This finding has important implications for the development of fast charging I--based aqueous rechargeable batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Computer Science, Information Systems
Medha Gijare, Sharmila Chaudhari, Satish Ekar, Shoyebmohamad F. Shaikh, Rajaram S. Mane, Bidhan Pandit, Muhammad Usman Hassan Siddiqui, Anil Garje
Summary: The important electrochemical measurements of rGO/TiO2 electrodes for glucose sensor application are reported in this work. The sensitivity, stability, and reproducibility of the sensor electrodes in evaluating glucose concentration in serum are investigated. Citrus limetta fruit peel waste is used to synthesize green reduction of graphene oxide (rGO), and the rGO/TiO2 composite obtained by microwave heating method is analyzed for structural and morphological properties. The rGO/TiO2 sensor electrode shows high sensitivity, stability, and repeatability, with a response time of 5 s and a minimum detection limit of 0.32 μM of glucose.
Article
Chemistry, Physical
Cheolmin Park, Jinho Chang
Summary: This article reports that the formation of H2 bubbles can be suppressed on an electrified Pt electrode in an acidic water-in-salt electrolyte solution, leading to the reversible redox reaction of H+/H2. The study also reveals that an interfacial layer on the Pt electrode plays a crucial role in stabilizing the dissolved form of H2.
JOURNAL OF MATERIALS CHEMISTRY A
(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)