Article
Chemistry, Physical
Xiuan Xi, Jianwen Liu, Yun Fan, Lijuan Wang, Jun Li, Mingming Li, Jing-Li Luo, Xian-Zhu Fu
Summary: In this study, a promising cathode material with high activity and stability was developed by partially replacing Mo with Mg in the double perovskite structure. The newly developed material showed improved redox stability and CO2 electrolysis performance. Experimental results demonstrated that the electrolytic current of the new cathode material was almost double that of the original material, showcasing enhanced electrocatalytic performance.
Article
Physics, Applied
L. Schiesko, St. Lishev, A. Revel, E. Carbone, T. Minea
Summary: The fluid model is commonly used for low temperature plasma modeling due to its low computational cost. This paper revisits the classical assumption of isothermal negative ions for electronegative plasmas and investigates its validity during the transition from the plasma to its sheath. The study reveals strong variations in the temperature and polytropic coefficient of the negative ions, indicating that the classical assumptions of fluid modeling need to be verified for each specific system.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Kristopher J. Chandia, Roberto Failla, Bernardo Tellini, Mauro Bologna
Summary: This article analytically approaches the problem of a propagating wave in a waveguide with a border characterized by an arbitrary angular dependence, finding a relationship between the Fourier coefficients of the function describing the border of the waveguide and the propagation constant beta of the propagating wave. The proposed solution provides an analytical tool to obtain information about the shape of a waveguide, revealing that it is theoretically possible to partially or completely reconstruct the border of the waveguide.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Article
Chemistry, Physical
Qing Zhao, John Mark P. Martirez, Emily A. Carter
Summary: Copper is the most effective electrocatalyst for electrochemical CO2 reduction, and its activity and selectivity depend on the crystal facet. This study explores the CO hydrogenation reaction on Cu(100) using embedded correlated wavefunction theory, and predicts the preferred pathway and products. It also reveals the influence of surface morphology on the selectivity of CO2R electrocatalysts.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Mathematics, Applied
Daniel Seibel
Summary: In this work, we derive semianalytical formulae for the calculation of matrix entries in Galerkin boundary element methods for the Laplace equation. By applying the Duffy transformation and classical calculus, we obtain closed and exact formulae for singular, near singular, and regular cases.
SIAM JOURNAL ON SCIENTIFIC COMPUTING
(2023)
Article
Engineering, Electrical & Electronic
Ricardo E. Sendrea, Constantinos L. Zekios, Stavros V. Georgakopoulos
Summary: In this work, a new method is proposed for deriving the initial approximate model for a multifidelity surrogate optimization. The proposed method is trained using eigenfunction expansions characterizing the solution domain of the desired geometry and high-fidelity full-wave simulations. The efficiency and effectiveness of the proposed method are demonstrated through studies on various antenna designs, showing significant time savings compared to conventional approaches.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Chemistry, Physical
D. Reinisch, T. Reichbauer, K. M. Vetter, N. Martic, G. Schmid, K. J. J. Mayrhofer
Summary: This paper presents a novel cell design and operation mode based on a catalyst coated cation exchange membrane for aqueous CO2 electrolysis. The results show that the proposed design allows for stable, efficient, and scalable operation, and successfully converts CO2 into feedstock for the chemical industry.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Mengen Chu, Chunjun Chen, Yahui Wu, Xupeng Yan, Shuaiqiang Jia, Ruting Feng, Haihong Wu, Mingyuan He, Buxing Han
Summary: The CuO/CeO2 composites with strong metal-support interaction were synthesized and demonstrated high efficiency and stability in electroreduction of CO2 to C2H4.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Physical
C-Y Hsu, J. Stodolna, P. Todeschini, F. Delabrouille, V Barnier, B. Radiguet, F. Christien
Summary: The study successfully quantified the degree of phosphorus interfacial segregation in the sample by cross comparing four different techniques, which showed reasonable agreement.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
J. C. Ortiz-Herrera, H. Cruz-Martinez, O. Solorza-Feria, D. Medina
Summary: Support materials play a significant role in the performance of catalysts for the oxygen reduction reaction. Carbon nanotubes (CNTs) have emerged as a promising alternative due to their excellent properties. Catalysts supported on CNTs exhibit better oxidation resistance, higher catalytic performance, and greater durability compared to those supported on carbon black.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Mechanics
Mohammad Rafiefar, Hamid Moeenfard
Summary: The objective of this study is to provide novel numerical and analytical solutions for variable cross section shallow shells under static pressure loads. The governing equations and boundary conditions are derived using the principle of virtual work, and the partial differential equations are transformed into ordinary differential equations using the extended Kantorovich method. The solutions are obtained using both a numerical finite difference scheme and an analytical perturbation tool, and convergence of the schemes is analyzed. Parametric studies are also performed to investigate the effect of shell's aspect ratio on maximum transverse deflection.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Chemistry, Physical
Yu-Xin Liu, Wei-Yi Zhang, Guo-Kang Han, Ya-Wei Zhou, Ling-Feng Li, Fan-Peng Kong, Yun-Zhi Gao, Chun-Yu Du, Jia-Jun Wang, Lei Du, Wen-Bin Cai, Ge-Ping Yin
Summary: This study reveals that dynamic potential scanning can gradually regenerate poisoned Pt/C, and that SO2 can be converted to easily oxidized forms at a low potential. Based on this mechanism, a square wave-based protocol is proposed to completely regenerate SO2-poisoned Pt surfaces within an unprecedented three cycles.
Article
Mathematics
Evgenii Karabut, Elena Zhuravleva
Summary: This paper considers a problem of unsteady plane potential flows with a free boundary. The entire boundary occupied by the liquid is free and a zero pressure is maintained. There are no external or capillary forces, and the motion is driven by inertia. The prescribed parameters at the initial time are the velocity field and the domain occupied by the fluid. The solution is obtained in the form of power series, which are then summed up using the Pade approximation.
Article
Engineering, Environmental
Yuan Zhang, Junbiao Li, Heping Xie, Zhipeng Liu, Suling Shen, Ying Teng, Daqin Guan, Shuo Zhai, Yufei Song, Wei Zhou, Bin Chen, Meng Ni, Zongping Shao
Summary: By utilizing a CO2-induced reconstruction strategy, a BaCO3 shell with both oxygen incorporative and robust properties was successfully built on a self-assembled composite cathode made of BaFeO3-delta perovskite. The resulting cathode exhibited enhanced ORR activity, durability, and thermomechanical compatibility.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Applied
Brian Fuchs, Jianmin Qu, Jin-Yeon Kim, Kinga A. Unocic, Qianying Guo, Pradeep Ramuhalli, Laurence J. Jacobs
Summary: This paper investigates the precipitation of chromium carbides in austenitic stainless steels at high temperatures, leading to intergranular chromium depletion along grain boundaries. A reduced-order model of acoustic nonlinearity is proposed to explain the phenomenon, with a direct relationship observed between the radius of M23C6 grain boundary carbides and the non-linear ultrasound parameter beta. The model was validated through experimental observations and measurements, providing insights into the behavior of these alloys during isothermal aging.
JOURNAL OF APPLIED PHYSICS
(2021)
Editorial Material
Energy & Fuels
Tao Wang, Ah-Hyung Alissa Park, Yixiang Shi, Greeshma Gadikota
Article
Energy & Fuels
Peixuan Hao, Yixiang Shi, Shuang Li, Xuancan Zhu, Ningsheng Cai
Article
Chemistry, Physical
Peixuan Hao, Zhiming Liu, Yixiang Shi, Shuang Li, Ningsheng Cai
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2019)
Article
Chemistry, Physical
Xuancan Zhu, Chunping Chen, Yixiang Shi, Dermot O'Hare, Ningsheng Cai
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2020)
Article
Engineering, Chemical
Yu Luo, Yixiang Shi, Yanbo Chen, Wenying Li, Lilong Jiang, Ningsheng Cai
Article
Thermodynamics
Li Lin, Shuai Chen, Jiankang Quan, Shuting Liao, Yu Luo, Chongqi Chen, Chak-Tong Au, Yixiang Shi, Lilong Jiang
ENERGY CONVERSION AND MANAGEMENT
(2020)
Review
Energy & Fuels
Peixuan Hao, Shuang Li, Shigang Li, Yixiang Shi, Ningsheng Cai
Article
Chemistry, Physical
Peixuan Hao, Yixiang Shi, Ningsheng Cai
Summary: LaNi5 based alloys have been proposed for hydrogen separation and purification, but limited by poor CO tolerance at atmospheric temperature. A new method, ET-VPSA, using LaNi4.3Al0.7 as adsorbent, has been proposed to be energy efficient by elevating working temperature. The study shows that ET-VPSA can achieve a higher H-2 recovery rate compared to regular PSA, leading to a higher net efficiency in the hydrogen purification process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
F. C. Liu, P. Dong, J. Zhang, W. Lu, A. Taub, K. Sun
MATERIALS TODAY PHYSICS
(2020)
Article
Energy & Fuels
Jianghui Liu, Haishan Cao, Yixiang Shi, Peixue Jiang
Summary: This study investigated the adsorption isotherms and kinetics of methane in MIL-101(Cr) under different temperatures and pressures, finding that the delivery amount of methane can be enhanced by changing the charging and discharging temperatures. Additionally, it revealed that the adsorption rate of methane in MIL-101(Cr) is controlled by the diffusion process.
Article
Nanoscience & Nanotechnology
Jianyu Zhang, Hosop Shin, Wei Lu
Summary: This study demonstrates the top-down synthesis approach for mass-producing phosphorene-graphene nanosheet composites with superior performance. The hybrid material exhibits high reversible capacities at high current densities and maintains structural robustness for long-term cyclability. This scalable synthesis method opens up possibilities for practical applications of phosphorene-graphene materials in batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Honglu Wu, Shuang Li, Yang Liu, Menghua Liu, Yixiang Shi
Summary: The faradaic process of transition-metal-based oxides or/and hydroxides is used to significantly increase the capacity of electrochemical energy storage. However, the poor electrical conductivity and low stability of these materials hinder their potential application. To overcome this, carbon-transition-metal oxide composites are synthesized to combine the high electrical conductivity of carbon materials and the capacity of transition metals. The assembled electrode of hollow carbon nanosphere (HCNS)@Ni precursor/rGO exhibits outstanding electrochemical properties, with a high specific capacity of 1589 F g(-1) at a current density of 0.3 A g(-1) and a capacity retention of 77.9% after 1600 charge-discharge cycles at 10 A g(-1).
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Weizhe Zhang, Menghua Liu, Xin Gu, Yixiang Shi, Zhanfeng Deng, Ningsheng Cai
Summary: Severe global warming caused by fossil fuel utilization necessitates the development of renewable resources and the conversion of unstable chemical energy to overcome their fluctuation-related challenges. As an environmentally friendly and efficient energy carrier, hydrogen can be produced directly by renewable energy. However, the high cost of large-scale green hydrogen production through water electrolysis impedes its competitiveness, which can be resolved by enhancing thermodynamics and kinetics at elevated working temperatures. This review primarily focuses on the effects of temperature on electrolysis cells, providing multidimensional evaluations on materials and structures, performance, degradation mechanisms and mitigation strategies, and electrolysis in stacks and systems.
Article
Energy & Fuels
Yidong Jiang, Wenfei Mo, Tianyu Cao, Yixiang Shi, Ningsheng Cai
Summary: This study investigated the preparation of SOFCs with different cathode materials and pore former ratios using the atmospheric plasma spraying (APS) technology and operated at high temperature. The effect of cathode structure on electrochemical performance was analyzed, leading to the development of an optimized spraying method. Experimental results showed that the optimized spraying method improved peak power output of SOFCs and enhanced their tolerance to sulfur-containing fuels.
INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY
(2021)
Review
Multidisciplinary Sciences
Changyu Deng, Xunbi Ji, Colton Rainey, Jianyu Zhang, Wei Lu
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)