Article
Chemistry, Physical
Yu Chen, Jiaojiao Chen, Ke Bai, Zeyi Xiao, Senqing Fan
Summary: The evolution of bubbles during water electrolysis for hydrogen production can cause overpotential, and the electrode surfaces can be covered by these bubbles. This study presents flow-through electrodes with Co-based nanosheets loaded in Ni foam pores, which reduce adhesion between H2 bubbles and the superaerophobic catalyst layer and decrease the size of H2 bubbles. Under the condition of flow-through mode, the timely removal of bubbles from the catalyst surface enables adequate exposure of the catalysts, resulting in a reduction of overpotential for both hydrogen and oxygen evolution reactions. An electrolyzer with flow-through electrodes for alkaline water electrolysis is assembled, achieving a decrease in cell voltage and energy consumption for hydrogen production.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Paul C. Okonkwo, Himangshu Bhowmik, Ibrahim B. Mansir, Mohammed Ahmed Awadh Al Sarj Al Marhoon, Naif Fawaz Ahmed Al Sfarini
Summary: The size of electrode spacing significantly affects hydrogen production, with smaller electrode spacing increasing the interaction between the ionic electrolyte and the electrode, leading to higher efficiency in hydrogen generation. This experimental study provides important insights for alkaline water electrolysis for hydrogen production.
Article
Chemistry, Physical
Lauri Jarvinen, Pietari Puranen, Antti Kosonen, Vesa Ruuskanen, Jero Ahola, Pertti Kauranen, Michael Hehemann
Summary: This paper presents an open-source MATLAB toolbox for water electrolyzer polarisation curve parametrization and modelling, which was verified using measured data. The tool demonstrates its capability to work with a wide variety of use cases and provides an automated method for modelling and parametrization of electrolyzer polarisation curves.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Gerhard F. Swiegers, Anh Linh Hoang, Aaron Hodges, George Tsekouras, Chong-Yong Lee, Klaudia Wagner, Gordon Wallace
Summary: This work reviews the development of membraneless water electrolysis cells, which eliminate the need for a separator membrane. Three different approaches have been explored, including using microfluidic laminar flow, closely-spaced porous electrodes, and gas diffusion electrodes to avoid mixing of hydrogen and oxygen bubbles.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Thermodynamics
Wei Zhou, Shuai Chen, Xiaoxiao Meng, Jiayi Li, Yuming Huang, Jihui Gao, Guangbo Zhao, Yong He, Yukun Qin
Summary: The application of water electrolysis for hydrogen production is hindered by high energy consumption mainly due to sluggish anodic oxygen evolution reaction (OER). A two-step CAWE system was proposed to address the poor stability and abrasion issues in the conventional CAWE. Operating parameters significantly affected the Fe3+ reduction by coal in the hydrothermal system (HS).
Article
Engineering, Chemical
Abraham Gomez Vidales, Natalie C. Millan, Christina Bock
Summary: This study establishes a mathematical model to investigate the effects of operating conditions and transport limitations on the voltage and efficiency of single cell AEM water electrolyzers. The model evaluates the impact of operating temperature and pressure on the performance of AEMWEs, considering factors such as electrolyte conductivity, AEM thickness, catalyst layer porosity, and double layers at liquid-gas interfaces. Results show that the optimal temperature and pressure are 75 degrees C and 1.8 MPa, respectively, consistent with experimental data. The model is also able to evaluate the performance and efficiency of the electrolyzer and may provide future recommendations for the optimization of the assembly and operation of an AEMWE single cell.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Green & Sustainable Science & Technology
N. A. Burton, R. V. Padilla, A. Rose, H. Habibullah
Summary: The rise in global energy consumption due to human activities has led to environmental issues caused by fossil fuels, prompting the exploration of renewable hydrogen as a clean energy alternative. However, the efficiency of commercially viable electrolyzers hinders the widespread adoption of renewable hydrogen. This study discusses innovative applications in solar-powered water electrolysis, emphasizing the potential of energy fields to alter molecular dynamics and enhance the efficiency of the process.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Janusz Kotowicz, Michal Jurczyk, Daniel Wecel
Summary: This paper investigates the cooperation between hydrogen generators and wind farms, demonstrating that selecting a hydrogen generator with appropriate power in relation to the wind farm power can ensure high efficiency for the device.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Fu Wang, Lei Wang, Yangliang Ou, Xuanmiao Lei, Jinliang Yuan, Xingjiang Liu, Yingying Zhu
Summary: Water electrolysis using SOEC has high efficiency and can be integrated with thermal sources to reduce electricity consumption. Integration of a diesel engine with SOEC can increase efficiency and optimize system parameters.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Chemistry, Physical
Majid K. Abbas, Qusay Hassan, Vahid Sohrabi Tabar, Sajjad Tohidi, Marek Jaszczur, Imad Saeed Abdulrahman, Hayder M. Salman
Summary: This paper discusses the feasibility of using a photovoltaic energy system to produce hydrogen from solar energy in the four main cities of Iraq. A simulation of an off-grid photovoltaic system with an alkaline electrolyser, hydrogen compressor, and hydrogen tank was conducted for one year. The results show that the annual hydrogen production ranges from 1713.92 kg to 1891.12 kg, with an evaluated cost of $3.79/kg. The study suggests that the optimal sites for solar hydrogen production systems are in the midwest of Iraq and other cities with similar climates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Jianhong Liu, Jieyu Wang, Yinglun Tang, Jian Jin, Wenjia Li
Summary: This study proposes a solar photovoltaic-thermal hydrogen production system based on full-spectrum utilization, which significantly reduces energy losses by optimizing system parameters and achieving a match between the supply and demand of electric and thermal energy. The system achieves a high solar-to-hydrogen efficiency under optimum conditions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Guiqiang Li, Jinpeng Li, Zhong Dai, M. Waqar Akram
Summary: This paper proposes a novel method for hydrogen production using solar energy, and establishes a hybrid hydrogen production model for calculation and discussion. The simulation results show that this hybrid approach achieves higher efficiency compared to using only photothermal synergistic reaction or photovoltaic power generation electrolytic water. The paper also studies the hydrogen production efficiency curves of this approach under different conditions.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Biochemistry & Molecular Biology
Mohd Fadhzir Ahmad Kamaroddin, Nordin Sabli, Tuan Amran Tuan Abdullah, Shamsul Izhar Siajam, Luqman Chuah Abdullah, Aishah Abdul Jalil, Arshad Ahmad
Summary: This paper discusses membrane-based water electrolysis for hydrogen production, focusing on different water splitting technologies and membrane selection for electrolyzers. It emphasizes the importance of developing electrolytic hydrogen systems that match available energy sources, and summarizes the challenges, prospects, and future trends in hydrogen production. Additionally, it reviews the principles, recent studies, and achievements in membrane-based electrolysis for hydrogen production.
Article
Chemistry, Physical
Qusay Hassan, Aws Zuhair Sameen, Hayder M. Salman, Marek Jaszczur
Summary: The study compares wind and solar solutions for large-scale production of green hydrogen, providing a precise technique and standardization for performance assessment. The findings show that the optimum electrolyser capacity can match the energy produced by the wind turbine power plant and solar photovoltaics power plant.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Energy & Fuels
Othmane Essahili, Omar Lakbita, Mouad Ouafi, Omar Moudam
Summary: The integration of luminescent solar concentrators in water electrolysis shows promise for producing green hydrogen. However, there are challenges related to low cost and efficiency that need to be addressed through further research and engineering.
Article
Chemistry, Applied
Anthony Ikechukwu Obike, Wilfred Emori, Hitler Louis, Godwin Ifeanyi Ogbuehi, Paul Chukwuleke Okonkwo, Victoria Mfon Bassey
Summary: This study investigated the adsorption properties of Alstonia boonei, a traditional medicine from West Africa, and evaluated its corrosion protection application for mild steel in acidic environments. The findings showed that the extract acted as a mixed inhibitor, with increased inhibition efficiency at higher concentrations. Computational studies revealed that eugenol, the most abundant phytochemical in Alstonia boonei, exhibited excellent adsorption properties and had the potential to compete with other established plant-based corrosion inhibitors.
PIGMENT & RESIN TECHNOLOGY
(2023)
Article
Energy & Fuels
Medhat A. Nemitallah, Ibrahim B. Mansir, Md Azazul Haque, Ahmed Abdelhafez, Mohamed A. Habib
Summary: The effects of adiabatic flame temperature (AFT) on stability, combustion, and emission characteristics of swirl-stabilized premixed oxy-methane flames are investigated numerically. The results show that the shape and size of the inner recirculation zone (IRZ) dominate the flame shape and flame-flow interactions. At low to moderate AFTs, the IRZ spreads downstream and becomes stronger, resulting in increased flame stability and more uniform axial temperature profiles.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2023)
Article
Engineering, Multidisciplinary
Mehdi Ghalambaz, Mutabe Aljaghtham, Ali J. Chamkha, Abdelkader Abdullah, Ibrahim Mansir, Mohammad Ghalambaz
Summary: Embedding phase change material in metal foams can improve the heat transfer characteristics of a thermal energy storage device. This study investigates the melting heat transfer of phase change materials embedded in a heterogeneous metal foam and finds that increasing heterogeneity can enhance heat transfer rate and shorten melting time.
APPLIED MATHEMATICAL MODELLING
(2023)
Review
Thermodynamics
Manaf Zghaibeh, Paul C. Okonkwo, Wilfred Emori, Tofayel Ahmed, A. M. A. Mohamed, Mansur Aliyu, Gbenga Joshua Ogunleye
Summary: Due to the negative impact of global warming, there is an increasing demand for green energy. CdTe has emerged as a leading material for photovoltaic systems due to its near-ideal bandgap and optical absorption coefficient. Efforts have been made to optimize the fabrication process and increase efficiency through copper doping. Increasing grain size has been found to reduce non-radiative recombination and improve solar cell performance. The achievements and prospects of CdTe solar cells for future development are discussed.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Engineering, Multidisciplinary
Yan Cao, Ibrahim B. Mansir, Pradeep Kumar Singh, H. Elhosiny Ali, Azher M. Abed, Adel M. El-Refaey, Ayman A. Aly, Dinh Tuyen Nguyen, Makatar Wae-hayee, Duy Cuong Tran
Summary: This study investigated the free convection of Fe3O4-water inside a porous enclosure under the influence of magnetic fields. The SIMPLE algorithm was used to solve the equations using FVM. The effects of different parameters, such as Ra-p, concentration, porosities, and magnetic numbers, on the mean Nusselt number were studied, revealing a direct relationship between the Nusselt number and these parameters. Additionally, increasing the volume fraction from 0.01 to 0.03 in high magnetic numbers resulted in a 32% enhancement in the Nusselt number.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Kai Sun, Dong Liu, Ibrahim B. Mansir, Xijie Chen, Can Guo, Wenqi Zhao, S. P. Ghoushchi
Summary: Electromagnetic vibration (EMV) is a novel active method to enhance heat transfer in heat exchangers. This paper investigates the effect of using multiple turbulators on hydrothermal parameters. Experimental results show that the geometry and arrangement of the turbulators significantly affect heat transfer and pressure drop.
APPLIED THERMAL ENGINEERING
(2023)
Review
Energy & Fuels
Ibrahim B. Mansir, Paul C. Okonkwo
Summary: Degradation and poor performance in proton exchange membrane fuel cells result from carbon corrosion caused by electrochemical activities. Carbon corrosion can be more severe during startup and shutdown. This review provides insight into the carbon degradation mechanism and discusses how hydrogen and oxygen affect carbon corrosion. Mitigating the risk of carbon oxidation and diminishing carbon corrosion can enhance fuel cell performance.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Engineering, Environmental
Hao-Feng Lin, Ibrahim B. Mansir, Hawzhen Fateh M. Ameen, A. Cherif, Abdulkareem Abdulwahab, Mahidzal Dahari, Haitao Lin, Ayman A. Aly, Samia Nasr
Summary: There is a need to develop novel clean systems for environmental and energy solutions. A novel tri-generation system for power, cooling and freshwater was developed using emergy analysis for evaluating economic and environmental aspects. The system performance was studied based on gasification temperature, combustion temperature and natural gas contribution. Various indicators were considered, including environmental loading ratio, Emergy sustainability index, Emergy investment ratio, Renewability scale, Emergy yield ratio, and energy efficiency. The system performance was optimized using response surface methodology. The results showed that increasing natural gas contribution improved system energy efficiency. The optimum conditions were found to be natural gas contribution of 1, gasification temperature of 1000 degrees C, and combustion temperature of 1403 degrees C, with prediction accuracy of response surface methodology below 5%.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Thermodynamics
Tao Hai, Ibrahim B. Mansir, Bader Alshuraiaan, Azher M. Abed, H. Elhosiny Ali, Mahidzal Dahari, Hind Albalawi
Summary: This study investigates the performance enhancement of a solar air heater using inclined impinging jets on the heater surface. Two main sets of arrangements are considered for the jet nozzles including the parallel and crossing orientation of nozzles in consecutive rows. It was found that the proposed jet solar air heater improved the Nu number and thermohydraulic performance parameter compared to the conventional unimproved solar air heater.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Xiangbo Liang, N. Bharath Kumar, Ibrahim B. Mansir, Pradeep Kumar Singh, Azher M. Abed, Mahidzal Dahari, Samia Nasr, Hind Albalawi, A. Cherif, Makatar Wae-hayee
Summary: Using micro-channel heat sinks (MCHSs) in electronic devices is common but the generated heat poses challenges in heat rejection. Placing vortex generators (VGs) improves cooling but increases pressure drop. In this study, ANN and RSM models were used to analyze the effect of varying VGs' placement angle, distances on the Nusselt number and pressure drop of MCHSs.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Xiaoqin Wang, Zhanguo Su, Ibrahim B. Mansir, Pradeep Kumar Singh, Nashwan Adnan Othman, Lei Zhang, Mingkui Li, Mahmood Shaker Albdeiri, H. Elhosiny Ali, Mahidzal Dahari, Ahmed Deifalla
Summary: Thermal management of microelectronic circuits is a difficult challenge, but an artificial neural network can optimize the geometry of a finned-MCHS. The parameter t has a noticeable impact on the thermal and hydrodynamic properties of the device.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Bian Hua, Ibrahim B. Mansir, Mohana Alanazi, Abdulaziz Alanazi, Sayed M. Eldin, Nawaf Alkhamis
Summary: Recently, thermoelectric devices have gained attention as an alternative to solar photovoltaic systems for electricity and heat production from solar energy. However, their low conversion efficiency limits the widespread use of solar thermoelectric generators. This research proposes a novel in-plane annular structure with segmented legs, which increases design flexibility and makes it a wearable efficient solar thermoelectric generator.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Thermodynamics
Yang Zhang, Haitao Lin, Rishabh Chaturvedi, Pradeep Kumar Singh, Ibrahim B. Mansir, KePing Zhang, Javid Alhoee
Summary: Using natural phenomena like free convection and modern nanostructures called NEPCM can improve heat transfer in lid-driven problems. This study simulated mixed convection of ethylene glycol and NEPCM in a lid-driven cavity with a rotating cylinder to assess the influence of Grashof number, cylinder speed, and NEPCM concentration on heat transfer characteristics. The results showed that a 6% concentration of NEPCM increased the mean Nusselt number by 41.7%, while the cylinder speed increased it by 38.7%. Additionally, an optimum concentration of 4% was observed for a Grashof number of 104.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Dahiru U. Lawal, Ismail Abdulazeez, Qusay F. Alsalhy, Jamilu Usman, Sani. I. Abba, Ibrahim B. Mansir, Ravishankar Sathyamurthy, Noel Jacob Kaleekkal, Binash Imteyaz
Summary: This study investigated the performance of a plate-frame water gap membrane distillation (WGMD) system for desalinating untreated real seawater. The findings revealed that the PTFE membrane exhibited superior vapor flux and energy efficiency. Copper, with its high thermal conductivity, achieved the highest vapor flux, while acrylic, with its low thermal conductivity, recorded the lowest vapor flux. Increasing the feed water temperature significantly increased the vapor flux and system gain output ratio. The use of PTFE membrane and copper as cooling plate material was recommended for better system performance.
Review
Chemistry, Multidisciplinary
Ini-Ibehe N. Etim, Demian I. Njoku, Paul C. Uzoma, Sharafadeen K. Kolawole, Olajire S. Olanrele, Okpo O. Ekarenem, Bright O. Okonkwo, Alexander I. Ikeuba, Inime I. Udoh, Chigoziri N. Njoku, Iniobong P. Etim, Wilfred Emori
Summary: This review highlights the presence and dangers of microbiologically-influenced corrosion (MIC) in energy production facilities in Africa. It calls for attention from African governments, organizations, and professionals, and provides detailed information on bacteria types, detection methods, impacts, and mitigation measures.
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.
