Article
Chemistry, Multidisciplinary
Shankar S. Narwade, Shivsharan M. Mali, Bhaskar R. Sathe
Summary: This study presents a highly efficient and inexpensive metal-free electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The ethylene diamine decoration on multi-walled carbon nanotubes provides nitrogen-rich nanomaterials, offering a promising approach for replacing fossil fuels.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yu Jun Yang, Chuan Yao, Songyang Chen, Ningya Wang, Panxiang Yang, Chenjia Jiang, Mengxiao Liu, Yao Cheng
Summary: Flower-like CoNi2S4/MWCNT nanosheet arrays were successfully synthesized using a facile hydrothermal method, showing exceptional electrochemical performance on Ni foam with high areal capacity and superior cycling stability. An asymmetric supercapacitor assembled with these materials provided a maximum energy density of 60.83 W h kg(-1) at 284.9 W kg(-1) and retained 85% of its initial capacity after 2000 continuous GCD cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Elzbieta Frackowiak, Masoud Foroutan Koudahi, Maciej Tobis
Summary: The physicochemical and electrochemical properties of carbon composites with two sulfides ReS2 and FeS2 are studied, showing potential applications for electrochemical capacitors. The structure-to-capacitance correlation for composites with various TMDs loading is emphasized, with ReS2 composite having lower capacitor voltage due to quicker electrolyte decomposition, while FeS2 composite can operate at extended voltage limits.
Article
Materials Science, Ceramics
Shweta Tanwar, A. L. Sharma
Summary: The report investigates the impact of selenium powder aging in hydrazine hydrate on the electrochemical performance of MoSe2@AC composite-based electrodes and its supercapacitor application. The MoSe2@AC composite is synthesized using the hydrothermal method and validated through structural, chemical bond, and morphology investigation. Among all samples, the six days aged sample, M6AC, demonstrates the best electrochemical performance. The M6AC material-based symmetric cell exhibits a specific capacitance of approximately 394 F g-1 and energy/power density of 55 W h kg-1 and 845 W kg-1, respectively.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Yongfeng Chen, Yufeng Sun, Geoffrey I. N. Waterhouse, Huiju Gao, Zhixiang Xu
Summary: In this study, a highly selective molecularly imprinted gel (MIG)-based electrochemical sensor was developed for simultaneous detection of vanillin (VAN) and tartrazine (TZ) in foods. The sensor showed a linear response over the concentration range of 0.03-125 mu M, with detection limits of 0.006 mu M and 0.005 mu M for VAN and TZ, respectively. The developed sensor demonstrated excellent recoveries (92.2%-109.7%) when applied to analyze liqueur, white vinegar, and vanilla ice cream samples spiked with VAN and TZ.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Review
Chemistry, Analytical
Sheriff A. Balogun, Omolola E. Fayemi
Summary: This review extensively discusses the current developments in cobalt phthalocyanine multiwalled carbon nanotubes (CoPc-MWCNTs) nanocomposites as potential materials for electrochemical sensors, including their different fabrication methods, modifying electrodes, and the detected analytes. It highlights the unique physicochemical properties of CoPc-MWCNTs and their enhanced redox-active behavior for designing solid electrodes to determine various analytes.
Article
Energy & Fuels
K. Narthana, G. Durai, P. Kuppusami, J. Theerthagiri, S. Sujatha, Seung Jun Lee, Myong Yong Choi
Summary: Ni1-xCuxS metal sulfides with nanorods-like structures were synthesized via a hydrothermal process, showing high specific capacitance with Ni-0.8Cu0.2S having the best electrochemical performance due to its crystalline structure and active sites. These materials demonstrate potential as cost-effective and environmentally friendly electrode materials for supercapacitors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Krishna Prasad Sharma, Miyeon Shin, Ganesh Prasad Awasthi, Milan Babu Poudel, Han Joo Kim, Changho Yu
Summary: The CuS/NSC nanocomposite material synthesized via hydrothermal technique showed excellent electrocatalytic performance for non-enzymatic glucose sensors, with high sensitivity and good selectivity for glucose detection.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Weixin Lv, Lin Zhu, Xiaoping Kong, Haitao Shi, Chongchong Wang, Rui Zhang, Wei Wang
Summary: Fe(EDTA)-Ni3S2 @NF electrode was prepared by hydrothermal method, which can reduce the energy consumption of urea-assisted water splitting for hydrogen production. The addition of EDTA promoted Fe doping in Ni3S2, regulating its morphology and electronic structure. The Fe(EDTA)-Ni3S2 @NF showed excellent urea oxidation activity, with a required potential of 1.363 V (vs. RHE) at 50 mA cm(-2). The electrode's kinetics and DFT calculations revealed limitations in urea oxidation reactions under high current density. The detection of NO2- as the liquid product and a faradaic efficiency of 38% for electrooxidation of CO2NH4 to NO2- were observed on Fe(EDTA)-Ni3S2 @NF. These findings provide valuable insights for urea oxidation in water-energy nexus systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Energy & Fuels
Muhammad Ramzan Abdul Karim, Waseem Shehzad
Summary: This article provides a comprehensive review of the recent research on transition metal compounds (TMCs) and their nanocomposites with carbonaceous materials for supercapacitor applications. The inclusion of carbonaceous materials in TMCs leads to the formation of hierarchical structures with desirable properties, such as mesoporosity and high surface area, which enhance the electrochemical performance of the composites. Among various synthesis routes, the two-step hydrothermal method is considered the most feasible for preparing TMC-based nanocomposites with excellent energy, power densities, and cyclic stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Hongyuan Zhao, Huina Ma, Xiaoguang Li, Binbin Liu, Runqiang Liu, Sridhar Komarneni
Summary: The electrode sensor prepared with halloysite/multi-walled carbon nanotubes nanocomposite showed excellent performance in detecting methyl parathion, with a low detection limit and good detection effect.
APPLIED CLAY SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Zahir Iqbal, Umer Aziz, Sikandar Aftab, Ahmad A. Ifseisi, Mohd Zahid Ansari
Summary: Hybrid supercapacitors have attracted attention for energy storage applications, but better electrode materials are needed to improve their capacity and power limits. Transition metal sulfides, with improved electrical conductivity and high electrochemical activities, are ideal contenders for hybrid supercapacitor applications. CoMnS synthesized with different concentrations showed optimum performance in a three electrode configuration, delivering high specific capacity and lower series resistance. The fabricated hybrid device exhibited intriguing properties, including high energy and power.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
K. Lilly Mary, D. Geetha, P. S. Ramesh
Summary: Nanostructures of indium sulfide and nickel doped indium sulfide were analyzed using various techniques, including XRD, FTIR, FE-SEM, EDX, UV-Vis DRS, PL, and XPS. The addition of nickel dopants caused changes in the crystallinity, absorption bands, and elemental composition, as observed in the analysis results. Furthermore, the optical and photocatalytic properties of the samples were also evaluated, with the doped sample exhibiting improved performance compared to the undoped sample.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Wen-Juan Zeng, Chuang Li, Yue Feng, Shu-Huan Zeng, Bing-Xin Fu, Xiao-Liang Zhang
Summary: Composite membranes of GO/CNTs with fine hierarchical nanostructure were successfully fabricated by intercalation of MWCNTs-COOH into GO nanosheets, showing efficient organic wastewater treatment with high rejection and permeated flux towards methylene blue dye solutions. The membranes exhibited nearly 10-fold water permeated flux improvement compared to pristine GO membranes, with electrostatic interaction and size exclusion effects contributing to the efficient separation properties against different types of dyes and organic molecules.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Jixing Ai, Xin Wang, Yan Zhang, Huali Hu, Huanxi Zhou, Yu Duan, Dexiang Wang, Hong Wang, Haijun Du, Yang Yang
Summary: In this study, a nano-structured cerium oxide and multiwall carbon nanotube composite was successfully developed as an electrochemical sensor for the detection of neonicotinoid insecticides in crops. The sensor exhibited a broad linear range, low detection limit, excellent reproducibility, and stability. The results demonstrated that this sensor has great potential for quick detection of neonicotinoid insecticides in the agricultural industry.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Dan Liu, Yuxiao Guo, Xingtian Yin, Yawei Yang, Wenxiu Que
Summary: Introducing quantum dots through a low-temperature seed-assisted growth method can repair defects in polycrystalline films of halide perovskites, suppressing migration channels inside the grains and improving the device efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yawei Yang, Haixiang Feng, Wenxiu Que, Yu Qiu, Yunqi Li, Lin Guo, Qing Li
Summary: A scalable solar evaporator has been proposed in this study, which can operate steadily and produce freshwater under high salinity and high irradiation conditions. This evaporator exhibits high salt tolerance and evaporation rate, and is a simple, low-cost, efficient, scalable, and long-term stable device for desalination.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Pengcheng Zhang, Xuanhe Ru, Haiyang Li, Haoyu Liang, Huanping Wang, Chenhui Yang, Xiaoguang Zhang, Zhenguo Liu, Qiuyu Zhang, Yanhui Chen
Summary: The rapid development and extensive use of electronic equipment have led to serious electromagnetic pollution. It is important to develop highly flexible electromagnetic interference (EMI) shielding materials with high efficiency. However, most EMI materials lack flexibility and have complicated preparation methods. In this study, two types of multilayer MXene/CNT hybrid films were prepared using different filtration methods. The films with self-assembly structure exhibited higher electrical conductivity, electromagnetic shielding performance, and specific shielding effectiveness compared to the films with alternating structure. These films also demonstrated excellent flexibility and could be folded into the shape of an airplane. This research provides a simple and feasible method for preparing composite films for EMI shielding applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Yi Tang, Chenhui Yang, Yangyang Xie, Yunqing Kang, Wenxiu Que, Joel Henzie, Yusuke Yamauchi
Summary: This study describes a 2D MXene-based mesoporous nanoarchitecture with ordered mesoporous carbon layers and molybdenum carbide nanodots. The mesopores increase the material's surface area, expose active sites, and improve the performance in the hydrogen evolution reaction. The structure exhibits excellent long-term stability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Zhaoxi Liu, Yapeng Tian, Shiquan Li, Liu Wang, Buxing Han, Xinwei Cui, Qun Xu
Summary: Controllable and selective etching of B atoms from B-doped Ti3AlC2 precursors has been reported, generating boron-vacancy doped MXene (B-V-MXene) nanosheets with finely-regulated, ion-intercalation structures. Ti around vacancies possess higher surface-redox activity than pristine MXenes, improving capacitances. In addition, the dopant B atoms increase electron density on Ti, facilitating adsorption and migration of ions.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Chenji Xia, Yijia Luo, Xiaoqing Bin, Bowen Gao, Wenxiu Que
Summary: Combining two-dimensional conductive MXene with transition metal oxide is a promising approach to improve the conductivity of metal oxide materials. In this study, we synthesized a MnO2/Ti3C2Tx composite electrode using a facile hydrothermal route, which showed improved morphology, conductivity, and electrochemical performance compared to the pure MnO2 electrode. The specific capacitance of the MnO2/Ti3C2Tx composite electrode reached 210.8 F.g(-1) at a scan rate of 2 mV.s(-1), while the pure MnO2 electrode only achieved 55.2 F.g(-1). The synthesis strategy presented in this work could contribute to the development and practical application of electrode materials for supercapacitors.
Article
Chemistry, Multidisciplinary
Qingping Li, Ransha Deng, Yuxiang Chen, Juan Gong, Peng Wang, Qiaoji Zheng, Yu Huo, Fengyu Xie, Xijun Wei, Chenhui Yang, Dunmin Lin
Summary: In this study, a hierarchical hollow microsphere composed of heterostructured NiS/NiS2 nanoparticles confined by in situ carbon layer (H-NiS/NiS2@C) was successfully assembled by regulating the sulfidation temperature of the precursor Ni-MOFs. The ultrathin hollow spherical shells and in situ carbon layer provided rich channels for ion/electron transfer and alleviated the effects of volume change and agglomeration of the material. The resulting H-NiS/NiS2@C exhibited superb electrochemical properties, including high specific capacity, excellent rate capability, and superior cycle life.
Article
Nanoscience & Nanotechnology
Cong Zhang, Xingtian Yin, Gaocheng Chen, Zi Sang, Yawei Yang, Wenxiu Que
Summary: This paper reports a novel amorphous indium gallium zinc oxide/lead sulfide quantum dots (a-IGZO/PbS QDs) heterojunction photoconductor. By innovatively increasing the photocurrent by several orders of magnitude without generating additional noise, the sensitivity and responsiveness of the device have been improved. Compared with the initial pure PbS QDs-based photoconductor, the heterojunction device can increase the photocurrent by 3000 times and improve the response speed of the device with the help of interface-assisted carrier separation and recombination. In the NIR band, the device exhibits exciting performance with a detectivity of 1.53 x 10^13 Jones, a responsivity of 19070 mA/W, and a decay time of 0.39 ms. By applying the a-IGZO/PbS QDs heterojunction to paper-based devices, a flexible device with bending resistance can be obtained, and the detection performance of the device does not deteriorate after 1000 times of bending.
Article
Green & Sustainable Science & Technology
Yawei Yang, Riyao Wang, Zhongji Han, Rui Wang, Jiancheng He, Chengyu Zhang, Wenxiu Que
Summary: Semiconductor photocatalysis using TiO2 nanomaterials has shown promise in the degradation of micropollutants for environmental remediation. In this study, a scalable and refreshable photocatalytic foam was successfully fabricated by immobilizing TiO2 catalyst nanoparticles on EVA foam. The fabricated foam demonstrated excellent photocatalytic activity, stability, and refreshability for in-situ micropollutant degradation.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Dongliang Ding, Ruoyu Huang, Bo Peng, Yangyang Xie, Haitao Nie, Chenhui Yang, Qiuyu Zhang, Xue-ao Zhang, Guangzhao Qin, Yanhui Chen
Summary: In this study, insulating thermally conductive polymer composites were prepared using self-assembly and chemical vapor infiltration methods. Multiscale simulation revealed the impact of welded BN-BN interfaces on thermal conductivity and provided rational cognition.
Article
Chemistry, Multidisciplinary
Cong Zhang, Xingtian Yin, Guojiang Qian, Zi Sang, Yawei Yang, Wenxiu Que
Summary: This article presents a solution-phase ligand exchange-based PbS-I quantum-dot-sensitized InGaZnO hybrid phototransistor with excellent air stability and tunable operation mode to meet different detection requirements.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shoaib Iqbal, Xingtian Yin, Boyang Wang, Jiawei Zhang, Muhammad Zubair Nisar, Jide Zhang, Wenxiu Que
Summary: This study investigates the fabrication of high-performance perovskite solar cells using doctor blading and methylamine vapour treatment. The researchers successfully deposited MAPbI(3) films with precise morphology control using doctor blading, resulting in a fully printed perovskite solar cell with a carbon electrode. The fabricated low-temperature-derived PSCs exhibited excellent power conversion efficiency and high reproducibility. This work highlights the potential of doctor blading and methylamine vapour treatment as promising methods for fabricating high-performance perovskite solar cells.
Article
Engineering, Multidisciplinary
Wen Zheng, Bo Liu, Chenhui Yang, Aibo Zhang
Summary: A novel flexible microwave absorbing material with a cone-shaped sandwich structure has been proposed, which shows impressive broadband absorption properties. The experimental and simulation results are in good agreement, confirming the accuracy and feasibility of the method. The investigation also demonstrates the material's adsorption retention rate in saline solution.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Chemistry, Multidisciplinary
Guanglei Chen, Yangyang Xie, Yi Tang, Tianshuai Wang, Zhenyu Wang, Chenhui Yang
Summary: This study investigates the enhanced volumetric capacitance of nitrogen-doped titanium carbide (MXene) films in high-concentration sulfuric acid electrolyte. Through density functional theory calculations, it is revealed that the introduction of metal vacancy sites can increase the electronic capacity and explain the high performance of nitrogen-doped MXene materials.
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)
