Article
Chemistry, Physical
Meijuan Yuan, Xiaotian Guo, Nan Li, Huan Pang
Summary: By utilizing biomass materials, optimal catalytic properties for the urea electro-oxidation reaction were achieved, resulting in lower potential and higher efficiency for energy conversion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Mohamed Taha, Yasser A. Attia, Shymaa S. Medany
Summary: Investigation on the electrocatalytic activity of Ni/NiO microflower-decorated g-C3N4 heterostructure towards urea electrochemical oxidation (UEO) showed that the Ni/NiO 30%/g-C3N4 nanocomposites exhibited the highest electrocatalytic activity and stability.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Salam Surjit Singh, Biraj Shougaijam, Mir Waqas Alam, Naorem Khelchand Singh
Summary: In this study, a thin Cu2O layer was fabricated on p-type silicon substrates using the E-beam evaporation method without catalyst. The fabricated CuO sample was annealed at different temperatures. The structural and morphological analysis of the samples were examined using XRD and SEM. The results showed the phase transition of CuO and the formation of Cu2O in the as-deposited sample.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Hanwen Xu, Wen -Da Zhang, Yang Yao, Jingguo Yang, Jiangyong Liu, Zhi-Guo Gu, Xiaodong Yan
Summary: Amorphous chromium oxide confined Ni/NiO nanoparticles-assembled nanosheets were synthesized through an in-situ confined synthesis method, which showed fast reaction kinetics for urea oxidation reaction (UOR). The confinement effect of the in-situ generated CrOx overlay resulted in ultrafine Ni/NiO nanoparticles and rich interfaces. Both CrOx and metallic Ni promoted the formation of NiOOH species and electron transfer, leading to high intrinsic activity and fast reaction kinetics. The protective effect of the CrOx overlay also ensured robust working stability for UOR. Moreover, the Ni/NiO@CrOx nanosheets served as bifunctional catalysts for overall urea splitting with a low electrolysis cell voltage.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Wenjun Liu, Liming Dai, Yiming Hu, Ku Jiang, Qian Li, Yilin Deng, Junjie Yuan, Jian Bao, Yucheng Lei
Summary: The development of a promising and novel bifunctional electrocatalytic material for water splitting, NCS/NF, shows low potential in the presence of urea, laying the foundation for exploring the feasibility of low energy-intensive and large-scale hydrogen production in the future.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Polymer Science
Fowzia S. Alamro, Mahmoud A. Hefnawy, Sherif S. Nafee, Nada S. Al-Kadhi, Rami Adel Pashameah, Hoda A. Ahmed, Shymaa S. Medany
Summary: Wastewater with high urea levels poses a significant risk to human health. The use of the NiCo2O4@chitosan catalyst can transform urea in wastewater into hydrogen, contributing to environmental conservation and sustainable energy production.
Article
Electrochemistry
Sandeep Sheokand, Prashant Kumar, Shakra Jabeen, Kawaljeet Singh Samra
Summary: In this study, the effect of reaction temperature and urea concentration on the electrochemical performance of NiO nanoparticles is investigated through the synthesis of NiO nanosheets using a hydrothermal method. The structural and morphological characterizations of the synthesized nanoparticles are analyzed and the electrochemical performance of the developed electrodes is evaluated. The binder-free electrode prepared using these NiO nanosheets displays excellent specific capacity and cyclic stability, demonstrating promising potential for energy storage applications.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Engineering, Chemical
Yi-Hung Liu, Chi-Han Hung, Cheng-Liang Hsu
Summary: In this study, a Ni(OH)(2)/CNT/CF composite electrode was developed and characterized to investigate its electrode kinetics for enhanced urea oxidation reaction (UOR) performance. The electrode exhibited satisfactory UOR performance with higher oxidation current and lower overpotential, attributed to the active and reversible Ni2+/Ni3+ redox reaction of the composite. The inclusion of CNTs in the electrode structure led to increased reaction surface area and electrical conductivity, resulting in lower charge transfer resistance compared to conventional electrodes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yan-Ru Fan, Jin-Qi Li, Yu-Xi Yang, Zhi-Hao Zhang, Jie Zhang, Jing-He Yang
Summary: Phosphorus-doped nickel plating on carbon fibers (Ni-P/CF) demonstrates excellent urea electrooxidation performance and durability, with the potential for large-scale industrial production.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Physical
Yulia M. T. A. Putri, Thomas W. Chamberlain, Volkan Degirmenci, Jarnuzi Gunlazuardi, Yuni K. Krisnandi, Richard I. Walton, Tribidasari A. Ivandini
Summary: This study proposes NiCo-MOF-74 synthesized directly on the surface of porous NiO film as an efficient electrocatalyst for the anode in direct urea fuel cells. The nickel-to-cobalt ratio of 4:1 exhibits the best catalytic activity towards urea oxidation, resulting in significant current enhancement compared to other electrodes. At optimized conditions, a current density of approximately 110 mA cm-2 and a maximum power density of 4131 mu W cm-2 can be achieved in an electrolyte solution of 3.0 M KOH and 1.0 M urea. The increased active surface area of the nickel-based anodes contributes to an abundance of active sites for urea oxidation, leading to excellent stability and reproducibility over 15 hours of application in a direct urea fuel cell.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kun Ma, Hui Wang, Palanisamy Kannan, Palaniappan Subramanian
Summary: In this study, a Ni2P-nanoparticle-integrated porous nickel oxide nanosheet catalyst was synthesized for the electro-oxidation of urea. The catalyst showed enhanced urea oxidation response and lower onset oxidation potential, mainly due to increased active sites and improved ion diffusion through the interface of Ni2P and NiO. The resulting catalyst has potential applications in environmental safety management.
Article
Green & Sustainable Science & Technology
Sathish Panneer Selvam, Sungbo Cho
Summary: An efficient electrocatalyst with Co3O4 embedded nitrogen-doped carbon on NiO nanosheets shows excellent performance in electrochemical water splitting and durability.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Chemistry, Multidisciplinary
Wenshuai Feng, Manman Bu, Yue Zhang, Yejun Li, Xiaohui Gao, Hongtao Liu
Summary: A series of morphology-controlled NiFeOOH nanosheets were directly synthesized through a one-step mild in-situ acid-etching hydrothermal process. The NiFeOOH nanosheets synthesized under 120 degrees C showed the optimal electrochemical performance for urea oxidation reaction, requiring only a small overpotential and exhibiting stable activity. The assembled urea electrolysis set using these nanosheets as bifunctional catalysts achieved a much lower potential than that of water splitting. This work provides a foundation for developing high-performance urea oxidation catalysts for hydrogen production and urea-rich sewage purification.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Physical
Masoumeh Ghalkhani, Rasol Abdullah Mirzaie, Afrooz Banimostafa, Esmail Sohouli, Elaheh Hashemi
Summary: This study aims to enhance the efficiency of ethanol electrooxidation reaction (EOR) and overcome electrode fouling by electrodepositing ternary nanocomposites of copper, nickel, and iron oxides on the glassy carbon electrode (GCE) surface. The GCEs were modified using three different procedures and activated by CV cycling in an alkaline solution. The best electro-catalytic efficiency was achieved by simultaneously electrodepositing nano Cu, Ni, and Fe2O3 on the GCE surface.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Jianan Li, Jili Li, Tao Liu, Lin Chen, Yefei Li, Hualin Wang, Xiurong Chen, Ming Gong, Zhi-Pan Liu, Xuejing Yang
Summary: Urea electrolysis is a promising technology for simultaneous H-2 production and nitrogen suppression in water energy production. However, prevalent nickel-based catalysts may over-oxidize urea into NO2- products, posing potential environmental hazards. Through experiments and calculations, a nitrogen-fate network was derived, leading to the development of a polyaniline-coating strategy to increase N-2 production. These findings offer insights into nitrogen fate in water-energy systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Runze He, Chunyan Wang, Ligang Feng
Summary: Developing bifunctional electrocatalysts for overall water splitting reaction is still highly desired but with large challenges. Herein, an amorphous FeCoNi-S electrocatalyst was developed using thioacetamide for the sulfuration of FeCoNi hydroxide during the hydrothermal process. The obtained catalyst exhibited an amorphous structure with hybrid bonds of metal-S bond and metal-O bonds in the catalyst system.
CHINESE CHEMICAL LETTERS
(2023)
Article
Engineering, Environmental
Yubin Kuang, Runze He, Xiaocong Gu, Fulin Yang, Xinlong Tian, Ligang Feng
Summary: In this study, nitrogen-doped carbon nanotubes (N-doped CNTs) derived from dicyandiamide pyrolysis were introduced into MOF-derived CoFe alloy and fluoride catalysts, resulting in significantly improved performance for oxygen evolution reaction (OER). The introduction of N-doped CNTs formed a structure of interconnected carbon nanotube active sites, which prevented active site agglomeration and improved catalytic conductivity, leading to enhanced mass transfer and active site exposure. This research made novel contributions to boosting catalytic ability of MOF-derived catalysts in OER catalysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Qiaowei Wang, Runze He, Fulin Yang, Xinlong Tian, Huaiming Sui, Ligang Feng
Summary: Electrochemical water splitting is a promising technique for green hydrogen production, but requires high-performance and low-cost catalysts. CoP-based materials are favored due to their catalytic activity and bifunctional properties. Heteroatom-doping can optimize the active center structures. This review discusses the effects, mechanisms, and recent progress of heteroatom-doped CoP catalysts for water-splitting electrocatalysis, providing insights for understanding catalysis and catalyst development.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Lice Yu, Xinru Pang, Zhiqun Tian, Shuli Wang, Ligang Feng
Summary: The catalytic performance of NiSe2 nanorod for urea oxidation can be greatly improved by Fe doping, which enhances the interface electric field and the adsorption capacity to urea molecules. The optimal Fe doping amount is 1.68 at.%, achieving the highest catalytic performance with a current density of 125.8 mA cm-2.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
Guo Zhi, Xiaohang Zhang, Wei Qiao, Ligang Feng
Summary: A novel and efficient PtIr alloy catalyst supported on CoSe-NC was developed for methanol electro-oxidation. The well-anchored PtIr alloy nanoparticles exhibited a strong electronic interaction with the support, leading to improved catalytic kinetics, stability, and activity. The PtIr/CoSe-NC catalyst showed a peak current density of 56.7 mA cm-2, which was 2.1 times higher than that of a commercial Pt/C catalyst.
Article
Chemistry, Multidisciplinary
Xue Zhao, Jianbing Chen, Zenghui Bi, Songqing Chen, Ligang Feng, Xiaohai Zhou, Haibo Zhang, Yingtang Zhou, Thomas Wagberg, Guangzhi Hu
Summary: By combining morphological control engineering and diatomic coupling strategies, heteronuclear Fe-Co bimetals can be efficiently intercalated into nitrogen-doped carbon materials, forming a star-like structure, which can simultaneously accelerate the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The FeCoNC/SL catalyst driven ORR exhibits higher half-wave potential and kinetic current density than the commercial Pt/C catalyst. The OER overpotential is as low as 316 mV (eta(10)), and the mass activity is at least 3.2 and 9.4 times that of mononuclear CoNC/SL and FeNC/SL, respectively. The Zn-air battery with FeCoNC/SL as the air cathode shows a high power density of 224.8 mW cm(-2) and a specific capacity of 803 mAh g(-1).
Article
Chemistry, Physical
Zenghui Bi, Hua Zhang, Xue Zhao, Yuwen Wang, Fang Tan, Songqing Chen, Ligang Feng, Yingtang Zhou, Xin Ma, Zhi Su, Xinzhong Wang, Thomas Wagberg, Guangzhi Hu
Summary: In this study, a nitrogen-doped carbon material with a micro-meso-macroporous structure doped with La was prepared and its La-O/N-C active sites were confirmed by experimental results. The material exhibited low half-wave potential and overpotential for both ORR and OER reactions. A zinc-air battery with this material as the air cathode showed high power density and stable charge-discharge performance. Density functional theory calculations indicated that LaO2N4 sites had the lowest activation free energy and the most easily desorbed oxygen capacity. This study provides important insights for the design of efficient and durable alternatives to precious-metal-based catalysts.
ENERGY STORAGE MATERIALS
(2023)
Review
Chemistry, Inorganic & Nuclear
Fulin Yang, Xinlong Tian, Wei Luo, Ligang Feng
Summary: This article comprehensively discusses the mechanism and application of nickel-based catalysts in the hydrogen oxidation reaction in alkaline fuel cells. It is crucial to develop novel nickel-based catalysts with high activity and stability through strategies such as optimizing the coordination environment and changing the chemical and coordination environment of the active sites. Additionally, the factors influencing stability and the methods to overcome them, as well as the performance of alkaline fuel cell devices with nickel-based anode catalysts, are summarized. The challenges in mechanism and catalyst design are highlighted, and possible research directions for nickel-based materials in alkaline HOR are outlined.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Energy & Fuels
Yiwen Li, Ligang Feng
Summary: This review discusses the research progress of heterostructured Ru-based hybrid catalysts in the water-splitting reaction for green hydrogen generation. The activity of Ru-based catalysts for the hydrogen evolution reaction is enhanced through synergistic effect, strain effect, and electronic effect. The latest progress in single ruthenium catalysts, ruthenium-related compounds, and ruthenium alloy catalysts is also discussed. Challenges such as intrinsic activity and stability, as well as application in real devices, are addressed.
Review
Chemistry, Inorganic & Nuclear
Chunru Liu, Ligang Feng
Summary: This review provides a summary of recent advances in catalysts for methanol-assisted water electrolysis. The mechanism of methanol-assisted water-splitting reaction classified by noble and non-noble metals is presented, and the research progress of these catalysts is summarized and discussed. Challenges and problems associated with catalyst design and optimization as well as their practical application are also commented on.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Fulin Yang, Qiaowei Wang, Jie Li, Ligang Feng
Summary: In this study, carbon doping was used to engineer the Ru/Te interaction in Ru nanoparticles supported on semiconductor Te nanorods, resulting in efficient hydrogen evolution reaction. Carbon doping improved the conductivity and charge transfer ability, leading to catalytic performance comparable to commercial Pt/C catalyst with high stability.
MATERIALS TODAY PHYSICS
(2023)
Review
Chemistry, Physical
Chunyan Wang, Ligang Feng
Summary: This article introduces the recent progress of iridium-based catalysts in proton exchange membrane water electrolysis (PEMWE), including the basic working principle, key components, and various types of iridium-based anode catalysts. The catalytic activity of iridium-based catalysts can be significantly improved through precise structural design and support selection. However, the anti-dissolution of iridium active species under acidic conditions should be carefully considered to enhance catalyst stability.
Article
Chemistry, Multidisciplinary
Xingyu Huang, Lice Yu, Xinzhong Wang, Ligang Feng
Summary: The Fe-doping effect-induced heterostructure formation and charge redistribution in Fe-doped NiS were found to significantly enhance the electrochemical oxygen evolution reaction.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Chunyan Wang, Lice Yu, Fulin Yang, Ligang Feng
Summary: In this study, an efficient Ir/MoS2 nanoflowers catalyst was reported for acidic water electrolysis. The catalyst exhibited good catalytic activity and stability, reducing the electrolysis overpotential and achieving a kinetic current density of 10 mA cm-2. The strong metal-support interaction changed the electronic structure of Ir metal and promoted the synergistic catalytic effect between Ir and MoS2 nanoflowers.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Hua Zhang, Abuduwayiti Aierke, Yingtang Zhou, Zitao Ni, Ligang Feng, Anran Chen, Thomas Wagberg, Guangzhi Hu
Summary: The construction of high-efficiency and low-cost non-noble metal bifunctional electrocatalysts for water electrolysis is crucial for the commercial large-scale application of hydrogen energy. In this study, a novel Er-NiCoP/NF structure was developed by growing erbium-doped NiCoP nanowire arrays on conductive nickel foam. The electrode showed exceptional catalytic activity for water splitting, achieving high current density and high solar-to-hydrogen efficiency.
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)
