Article
Chemistry, Physical
Panyu Ren, Mohammad Torkamanzadeh, Xiao Zhang, Marek Twardoch, Choonsoo Kim, Volker Presser
Summary: In this study, the influence of different carbon additives on the electrochemical desalination performance was explored. The results indicate that the direct use of activated carbon electrode without additives leads to higher desalination capacity but lower desalination rate. The incorporation of small and less porous additives improves ion transport and desalination rates.
Article
Chemistry, Physical
Anna Seltmann, Taras Verkholyak, Dariusz Golowicz, Emmanuel Pamete, Andrij Kuzmak, Volker Presser, Svyatoslav Kondrat
Summary: Ionic liquid mixtures show promise as electrolytes for supercapacitors, particularly under negative potential differences. However, for two-electrode cells, they are only beneficial at low and intermediate voltages, while neat ionic liquids perform better at higher voltages. We also discovered subtle correlations between ion distribution and pore accessibility, and suggested approaches to increase energy density.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Xuan Dai, Shulai Lei, Juan Liu, Zhitong Shang, Shengwen Zhong, Xiaocheng Li
Summary: The study utilized density functional theory to calculate the desired microstructure of carbon cathode suitable for LiPF6-contained electrolyte, finding that only pore sizes larger than 2.18 nm can accommodate PF6- ions. Carbon materials with pore sizes greater than 2 nm exhibit significantly improved capacitive performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Chemical
Zongbo Zhang, Yu Zhang, Chen Jiang, Dawei Li, Zexia Zhang, Kai Wang, Wengang Liu, Xin Jiang, Yunlong Rao, Chunling Xu, Xintong Chen, Nan Meng
Summary: This study investigated the performance of super activated carbon with high pore volume in capacitive deionization. The results showed that this carbon exhibited high salt adsorption capacity and desalination efficiency.
Article
Construction & Building Technology
Dunwen Huang, Qiaoming Yuan, Peng Chen, Xiang Tian, Hui Peng
Summary: The correlation between drying shrinkage and microscopic characteristics of alkali-activated fly ash and slag pastes is investigated. The alkali content and activator modulus affect the reaction degree of the pastes, leading to different capillary pressures and shrinkage. The elastic deformation only accounts for a small part of the overall shrinkage, while the long-term shrinkage depends on the viscous behavior of the pastes under capillary pressure.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Chemical
Yuan Zhang, Panyu Ren, Yang Liu, Volker Presser
Summary: Water desalination technique, especially capacitive deionization (CDI), is crucial in addressing the global freshwater shortage. CDI has gained attention for its use of low-cost electrode materials and high energy efficiency. However, the importance of proper electrode and parameter designs for desalination performance has been overlooked.
Article
Engineering, Environmental
Yunfeng Mao, Vikram Reddy Ardham, Longqian Xu, Pengyi Cui, Deli Wu
Summary: The dehydration effect of ions plays a crucial role in the selective removal process in capacitive deionization. The planar geometry of NO3- helps remove surrounding solvated waters and facilitates its entrance into the nanopore. Additionally, ion dehydration is essential for selectivity, which is dependent on pore size, electronic potential, and ion geometry.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Nikolaos Kostoglou, Christian Koczwara, Sebastian Stock, Christos Tampaxis, Georgia Charalambopoulou, Theodore Steriotis, Oskar Paris, Claus Rebholz, Christian Mitterer
Summary: The study investigates the potential applications of a nanoporous polymer-/polyaniline-derived activated carbon (PDAC) in hydrogen storage and supercapacitor energy storage. The PDAC demonstrates superior hydrogen adsorption performance and supercapacitor cell performance compared to conventional commercial activated carbon, attributed to the smaller pore sizes of the PDAC structure.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Shujun Zhang, Hanqing Zhao, Xinmei Gao, Dan Zhao, Guoqiang Wei, Zhong Li
Summary: In this study, carbon materials were optimized by introducing nanocarbons, resulting in enhanced electrochemical performance as an anode material in sodium-ion batteries.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Mathematics, Interdisciplinary Applications
Weibiao Xie, Qiuli Yin, Jingbo Zeng, Guiwen Wang, Cheng Feng, Pan Zhang
Summary: The pore space of tight sandstone samples shows fractal characteristics, which can be effectively characterized using nuclear magnetic resonance (NMR). This paper focuses on the fractal characteristics of pore size obtained from NMR analysis of tight sandstone samples. By analyzing experimental data, the relationship between NMR fractal dimension, pore structure, and water saturation is parameterized. Based on this, methods for pore structure characterization, classification, and water saturation prediction in water-saturated tight sandstone samples have been proposed. The application of these methods in the gas-bearing tight sandstone reservoir of Shahejie Formation in Nanpu Sag demonstrates consistency with experimental data.
FRACTAL AND FRACTIONAL
(2023)
Article
Electrochemistry
Yuan Gao, Zhewei Yang, Yongzhen Wang, Xiaomin Wang
Summary: This study focuses on optimizing pore structure and heteroatom doping to enhance the capacitive storage of carbon cathode. The synthesized P-doped activated carbon (PAC-6) shows a large specific surface area and high P content, leading to outstanding energy-power characteristics. PAC-6 exhibits a high specific capacitance, superior rate capability, and excellent cycling stability, making it a promising candidate for high-performance lithium-ion capacitors.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Beichen Xue, Jiahuan Xu, Yi Feng, Mingyang Ma, Rui Xiao, Xiaofeng Wang
Summary: The morphology of carbon significantly affects its capacitive performance. Biomass-derived porous carbons have inferior capacitive performance due to their three-dimensional blocked morphologies. This study provides a strategy to regulate the morphology of porous carbons and investigates the effect of morphology on charge storage capability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Chemical
Yazhen Zhao, Yanmeng Cai, Yue Wang, Shichang Xu
Summary: The hollow carbon sphere coated with polypyrrole (HCS@PPy) was synthesized using beta-cyclodextrin as the precursor. The combination of HCS and ion-doped PPy effectively improves the electrochemical performance, with a larger specific surface area for enhanced adsorption capacity. Desalination tests show that the asymmetric cell exhibits a higher electrosorption capacity and charge efficiency compared to the symmetric cell, indicating the potential of ion-doped PPy for improving adsorption capacity and suppressing co-ion effects.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Jingyi Sun, Zhonglin Chen, Shan Liu, Jing Kang, Binyuan Wang, Jimin Shen, Shengxin Zhao, Xueyan Li, Zilong Song, Zhe Wang
Summary: A novel carbon-cementitious microfiltration membrane (CCM) was fabricated to enhance the mechanical strength and stability of cementitious membrane (CM) during practical uses. The CCM exhibited better adsorption properties than CM in water treatment process, specifically for benzophenone-4, nitrobenzene, and p-chloronitrobenzene. These results expand the application scope of microfiltration membranes.
Article
Chemistry, Multidisciplinary
Ke Lv, Jizhen Zhang, Xu Zhao, Na Kong, Jinlong Tao, Ji Zhou
Summary: The effect of pore size on the capacitive performance of 2D nanomaterials is studied by fabricating flexible MXene foams with different pore structures using polystyrene spheres of varying diameters. The foam with MXene flakes and templates of similar size shows the highest gravimetric capacitance. Additionally, the introduction of carbon nanotubes further improves the electrical conductivity of the foam.
Article
Nanoscience & Nanotechnology
Zhe Su, Shan Yi, Wanyu Zhang, Liying Tian, Yayun Zhang, Shenghu Zhou, Bo Niu, Donghui Long
Summary: This study successfully synthesized ferromagnetic Fe-Co-Ni alloy/carbon composites using a direct carbothermal reduction method, achieving high-attenuation electromagnetic wave absorption in the C-band. The homogeneous dispersion of alloy elements in the solid-solution precursor enables excellent electromagnetic properties and triggers synergistic electromagnetic dissipation effects.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Chemical
Donghui Hong, Qingfu Huang, Xiaxi Xu, Bingbin Chen, Bo Niu, Yayun Zhang, Donghui Long
Summary: A method is proposed for precise reconstruction and heat transfer performance prediction of porous materials using experimentally guided image segmentation and deep learning-based reconstruction.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Zhen Qian, Hongxiang Cai, Peng Wang, Liang Li, Xiaoyi Zhou, Yu Cao, Yayun Zhang, Bo Niu, Donghui Long
Summary: A trade-off design of porous structure was developed for mid density nanoporous phenolic composites (NPC), which showed high-strength, insulation, and anti-ablation abilities. The thermal conductivity of NPC was effectively limited within 0.079-0.115 W/(m center dot K), with a mid-density of 0.89-1.04 g/cm3. Furthermore, NPC exhibited excellent insulation and ablation resistance under oxy-acetylene heat flux.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Guixiang Li, Junjie Wang, Bo Niu, Yue Xing, Xiubing Liang, Yayun Zhang, Donghui Long
Summary: Reactive molecular dynamics simulations were used to systematically evaluate the erosion collision and mechanical degradation of polyether ether ketone (PEEK) resin under hypervelocity atomic oxygen (AO) impact. The results revealed that AO can either scatter or adsorb onto PEEK, leading to the evolution of degraded species. High-energy AO collision transfers kinetic energy to PEEK's thermal energy, resulting in mass loss and surface penetration mechanisms. Vertically impacted AO causes less erosion on the PEEK matrix. Additionally, PEEK chains modified with phenyl side groups showed improved AO resistance and mechanical properties.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Wanyu Zhang, Zhe Su, Shan Yi, Hongli Chen, Meihuang Wang, Bo Niu, Yayun Zhang, Donghui Long
Summary: Introducing inorganic fillers into organic poly(ethylene oxide)(PEO)-based electrolyte has attracted attention for enhancing its ionic conductivity and mechanical strength. However, agglomeration of isolated particles often leads to limited inorganic-organic interphases. This study proposes a variety of metal oxide/reduced graphene oxide(rGO)/metal oxide nanocomposites to optimize lithium-ion conduction in lithium metal batteries, by creating continuous amorphous organic-inorganic interphases with stacked layer-by-layer structure through the support of high surface area rGO.
Article
Materials Science, Composites
Zhen Qian, Guixiang Li, Yun Feng, Hongxiang Cai, Liang Li, Yu Cao, Bo Niu, Yayun Zhang, Donghui Long
Summary: In this study, fast pyrolysis and in situ TG-FTIR-MS experiments elucidated the pyrolysis behavior of a nanoporous phenolic matrix (NPM) and illustrated the evolution of microstructures and properties in composites. The results showed that H2, CH4, and CO were the main components of the gas phase, while aromatic compounds were the main components of the condensed liquid phase. The analysis of in situ TG-FTIR-MS experiments revealed that the weight loss of NPM at low temperature was mainly due to the escape of H2O and CO2, while the weight loss at high temperature was caused by the escape of aromatic compounds. Moreover, the variations in the mechanical and thermal insulative performances of nanoporous phenolic composites (NPCs) were analyzed. This work would promote the development and application of porous phenolic composites in thermal protection system fields.
COMPOSITES COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Zhiqiang Zhao, Zhuo Zhang, Bo Niu, Yayun Zhang, Donghui Long
Summary: A continuous and hierarchical lithium-ion transport network was constructed by growing a copper-based metal-organic framework (Cu-MOF-74) on a three-dimensional nonwoven fabric. The electrolyte exhibited a high ionic conductivity, lithium-ion transference number, and electrochemical window, demonstrating potential for enhancing PEO-based solid-state polymer electrolytes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Materials Science, Ceramics
Bo Niu, Hongxiang Cai, Jie Liu, Zhen Jiang, Xuanfeng Zhang, Xiaofei Zhu, Yu Cao, Yayun Zhang, Donghui Long
Summary: This study proposes a novel method to enhance the compressive and high-temperature thermal-insulation properties of rigid fibrous ceramics (RFC) using nanoporous phenolic aerogel and high-temperature evaporative refrigerant. The results show that phenolic aerogel can increase the compressive strength of RFC and improve its thermal-insulation and antiablation performances. The idea and results of this study will advance the application of RFC in more extreme environments.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Nanoscience & Nanotechnology
Tao Zhang, Yanan Huang, Bo Niu, Yayun Zhang, Donghui Long
Summary: A new dual-competitive parallel-reaction kinetics model is proposed in this paper to describe the thermogravimetric lines of material pyrolysis processes. The model combines peak analysis, dual-competitive reaction form, and parallel reaction mechanism to accurately describe the pyrolysis of synthetic polymers and natural biomass. The model shows good agreement with experimental data and has low computational cost.
Article
Nanoscience & Nanotechnology
Zhe Su, Shan Yi, Wanyu Zhang, Xiaxi Xu, Yayun Zhang, Shenghu Zhou, Bo Niu, Donghui Long
Summary: The integration of ultrafine oxygen vacancy-rich Nb2O5 semiconductors into carbon nanosheets has been achieved to boost dielectric polarization and achieve high-attenuation microwave absorption. The presence of oxygen vacancies endows Nb2O5 semiconductors with abundant charge separation sites to reinforce electric dipole polarization. Moreover, the three-dimensional reconstruction of the absorber using microcomputer tomography technology provides insight into the intensification of the unique lamellar morphology regarding multiple reflection and scattering dissipation characteristics.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Composites
Hongxiang Cai, Zhen Qian, Liang Li, Yayun Zhang, Bo Niu, Donghui Long
Summary: In this study, the reinforcement effect, tensile properties, and fracture mechanism of needle-punched preform reinforced nanoporous phenolic composite (NPC) with different types of fabrics were investigated through experimentation and simulation. The composite with plain fabric exhibited the highest tensile strength and modulus, indicating the important role of the fabric as the main load-bearing structure.
COMPOSITES COMMUNICATIONS
(2023)
Article
Thermodynamics
Peng Wang, Xiaoyi Zhou, Liang Li, Fang Fang, Yupeng Zhang, Dongliang Quan, Yayun Zhang, Bo Niu, Donghui Long
Summary: Porous ablative materials are advanced thermal protection materials for re-entry, but analyzing their heat transfer and ablative thermal response process at a microscopic level remains challenging. This study presents a numerical model that combines macroscopic ablative thermal response and microscopic heat transfer for porous ablative materials, and validates the model through comparison with another computational program. The results enhance the understanding of the ablative thermal response process and provide insights for optimizing the design of thermal protection system (TPS) materials.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2024)
Article
Chemistry, Physical
Feng Hu, Huan Chen, Zhengliang Zhang, Bo Niu, Yayun Zhang, Donghui Long
Summary: A new concept of graphene-like carbons is proposed by using a melt-foaming strategy to prepare porous carbon nanosheets (PCNs) with abundant pore structure and organized sp(2)-C network. The curved nanosheets in PCNs are spatially isolated and lack interlayer stack, allowing unimpeded accessibility to functional groups, defects, and sp(2)-C network. Alkali-modified PCNs exhibit appealing catalytic oxidation of hydrogen sulfide with an unprecedented sulfur capacity up to 10.7 g H2S g(-1) catalyst, which is three times higher than that of graphene-based benchmark counterparts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Materials Science, Multidisciplinary
Zhiqiang Zhao, Huan Chen, Wanyu Zhang, Shan Yi, Hongli Chen, Zhe Su, Bo Niu, Yayun Zhang, Donghui Long
Summary: Carbon, as a significant functional material, has distinct properties and has been extensively studied for electrochemical energy storage and conversion systems. Defect engineering has been recognized as a vital research subject in defect chemistry, which enables significant improvements in the carbon matrix and enhances battery performance and electrocatalyst activity. This review summarizes recent advances in understanding, designing, and exploring defects in carbon materials for energy-related applications, providing reference and guidance for large-scale and industrial applications of defect-rich carbon functional materials.
MATERIALS ADVANCES
(2023)
Article
Materials Science, Composites
Hongxiang Cai, Bo Niu, Zhen Qian, Tong Li, Peng Wang, Liang Li, Yu Cao, Yayun Zhang, Donghui Long
Summary: This study investigates the mechanical, thermal insulation, and ablation behaviors of needle-punched fabric reinforced nanoporous phenolic composites (NPC) under different directional mechanical or thermal loads. The results show that the woven fabric acts as the primary load-bearing structure in certain directions, and horizontally stacked woven fabrics effectively protect the internal material from thermal erosion. Furthermore, the angle between the woven fabric and thermal load significantly influences the ablation mechanism.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
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)
