Journal of Solar Energy Research Updates最新文献

Design Principle and Development Trends of Silicon-Based Anode Binders for Lithium-ion Batteries: A Mini Review 锂离子电池硅基负极粘合剂的设计原理与发展趋势：小型综述

Journal of Solar Energy Research Updates Pub Date : 2024-05-15 DOI: 10.31875/2410-2199.2024.11.04

Hongyang Zhang, Yingdong Chen, Fangrui Liu, Ruojia Zhu, Pengtao Zhao, Lianjin Wei, Tao Chen, Jiajun Fu

{"title":"Design Principle and Development Trends of Silicon-Based Anode Binders for Lithium-ion Batteries: A Mini Review","authors":"Hongyang Zhang, Yingdong Chen, Fangrui Liu, Ruojia Zhu, Pengtao Zhao, Lianjin Wei, Tao Chen, Jiajun Fu","doi":"10.31875/2410-2199.2024.11.04","DOIUrl":"https://doi.org/10.31875/2410-2199.2024.11.04","url":null,"abstract":"Abstract: Silicon (Si), recognized as a promising alternative material for the anodes of lithium-ion batteries, boasts a high theoretical specific capacity and abundant natural availability. During the preparation of silicon-based anodes, binders play a pivotal role in ensuring the cohesion of silicon particles, conductive agents, and current collectors. The structure and performance of these binders are critical for the mechanical stability, electrical conductivity, and stress dissipation capacity of the anodes. This review initially outlines the structural characteristics of various binders, including linear, branched, and three-dimensional cross-linked types. It then delves into the relationship between the structure and properties of these binders in the context of their application in high-performance lithium-ion batteries, focusing on their mechanical properties, electrical conductivity, and self-healing capabilities. Particular attention is given to the design strategies for binders that facilitate stress dissipation, with an emphasis on integrating multifunctional polymer binders renowned for their superior conductive and self-healing features. Such binders contribute to the formation of a robust three-dimensional network structure via multiple bonding mechanisms, including chemical, non-covalent, and coordination interactions. This configuration significantly enhances the adhesion between silicon particles, thereby facilitating the efficient dissipation of stress, which is a key aspect for ensuring the long-term cycling stability of lithium-ion batteries. Lastly, the paper explores future development directions for silicon anode binders, advocating for a thorough investigation into the synergy of diverse structural and functional combinations, with the aim of advancing the performance and practical application of silicon-based lithium-ion batteries.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"7 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Modified Perturb and Observe Algorithm in Photovoltaic Maximum Power Point Tracking System 光伏最大功率点跟踪系统中的修正扰动和观测算法

Journal of Solar Energy Research Updates Pub Date : 2024-05-11 DOI: 10.31875/2410-2199.2024.11.03

Wei Xie

引用次数: 0

Fabrication of PVDF/PMMA Polymer for Sustainable Energy Harvesting 制作用于可持续能量收集的 PVDF/PMMA 聚合物

Journal of Solar Energy Research Updates Pub Date : 2023-11-28 DOI: 10.31875/2410-2199.2023.10.07

J. R. Leppe-Nerey, F. Sierra-Espinosa, M. Nicho, M.A. Basurto, J.A. Rodríguez

{"title":"Fabrication of PVDF/PMMA Polymer for Sustainable Energy Harvesting","authors":"J. R. Leppe-Nerey, F. Sierra-Espinosa, M. Nicho, M.A. Basurto, J.A. Rodríguez","doi":"10.31875/2410-2199.2023.10.07","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.07","url":null,"abstract":"Abstract: The synthesis of blends that combine properties of two or more polymeric materials is increasingly investigated due to the versatility of the synthesis and its growing potential for many applications, including sustainability. Their characteristics are defined mainly by the synthesis conditions. Therefore, this paper details the synthesis process of easy-to-handle films using mixing method. The procedures and drawbacks found during the preparation of composite films are described. Polymeric compounds formed by the mixture of polyvinylidene fluoride (PVDF) and polymethyl methacrylate (PMMA) are addressed, varying the concentration, and evaluating their impact on the piezoelectric capacity. Films were formed through the spin-coating technique and characterized by optical and holographic microscopes. The results showed that composites with a concentration of 50 wt.% or larger of PVDF in the blend acquire a morphology with a granular appearance, however at lower concentrations they present a homogeneous morphology similar to that of PMMA. A homogeneous distribution of PVDF in the PMMA stands out. However, excessive contents of PMMA are associated to peaks and non-uniformities detected like multicolored regions by digital holography. Controlled strength-strain laboratory tests allowed to evaluate the film blends performance. The results indicate noticeable improvements in voltage output for a composition 70wt% PVDF and 30 wt% PMMA.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139219606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart Grid Functioning of Solar Electric System Network Based on Complex Accumulation Control 基于复杂累积控制的太阳能电力系统网络的智能电网功能

Journal of Solar Energy Research Updates Pub Date : 2023-11-15 DOI: 10.31875/2410-2199.2023.10.06

E. Chaikovskaya

{"title":"Smart Grid Functioning of Solar Electric System Network Based on Complex Accumulation Control","authors":"E. Chaikovskaya","doi":"10.31875/2410-2199.2023.10.06","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.06","url":null,"abstract":"Abstract: Voltage maintenance in the distribution system takes place with the use of additional devices. The purpose of the work is to develop a Smart Grid functioning of the solar electric system network based on integrated storage control. Accumulator battery and thermoelectric accumulator as part of the solar electric system network acquire the additional status of voltage regulators in the distribution system. A comprehensive integrated system has been developed for supporting the functioning of the solar electric system network based on a prediction of changes in the battery capacity and power factor. Advanced decisions on change the capacity of the thermoelectric accumulator in redistributes the accumulated electrical energy. Changing the level of transmission of electric energy to the network make it possible to maintain voltage in the distribution system through maintaining the power factor of the network solar electric system. Continuous measurement of the voltage at the input to the hybrid inverter, the voltage at the output from the frequency converter and in the distribution system takes place. The change in the ratio of voltage at the output of the frequency converter and in the distribution system is evaluated. The peak load of the energy system is prevented, reducing the consumption of energy from the network to 14%.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"41 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139274165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diameter-Dependent Shape Memory Effect and Superelasticity in Ni-Mn-Ga Alloy Micro-fibers Ni-Mn-Ga合金微纤维的直径相关形状记忆效应和超弹性

Journal of Solar Energy Research Updates Pub Date : 2023-08-24 DOI: 10.31875/2410-2199.2023.10.05

Guanhua Zhang, Jiayue Xu, Haoyang Xie, Zihan Yang, Yan Feng, M. Qian, Jianfei Sun

{"title":"Diameter-Dependent Shape Memory Effect and Superelasticity in Ni-Mn-Ga Alloy Micro-fibers","authors":"Guanhua Zhang, Jiayue Xu, Haoyang Xie, Zihan Yang, Yan Feng, M. Qian, Jianfei Sun","doi":"10.31875/2410-2199.2023.10.05","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.05","url":null,"abstract":"Abstract: The functional properties of shape memory alloys (SMAs) may be affected by the material size and thus is important for designing micron-sized devices. Here the diameter-dependent size effect was demonstrated in Ni-Mn-Ga fibers with diameters of 15, 41, 53 and 70μm. The effect of fiber diameter on the shape memory effect (SME) and superelasticity (SE) was systematically studied. The results showed that all Ni-Mn-Ga fibers exhibited good stress assisted thermal cycles and SE, both diameter-dependent. For stress assisted thermal cycles, the temperature hysteresis of martensite transformation (MT) and sensitivity of MT temperature vs stress increased with increasing fiber diameter. While for SE, the stress hysteresis, temperature dependence of critical stress and energy dissipation capacity decreased with increasing fiber diameter. Thermodynamic analysis revealed that the diameter-dependent effect may be attributed to the different heat exchange and frictional work dissipation capacities related to the specific surface areas that affected the thermal- or stress-induced MT processes. Such diameter dependence in Ni-Mn-Ga micro-fibers needs to be considered for the design and application in micro-sized devices.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128991949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

UV Light-Induced Degradation of Industrial Silicon HJT Solar Cells: Degradation Mechanism and Recovery Strategies 紫外光诱导工业硅HJT太阳能电池的降解:降解机制和回收策略

Journal of Solar Energy Research Updates Pub Date : 2023-07-19 DOI: 10.31875/2410-2199.2023.10.04

Po-Chuan Yang, Shehroz Razzaq, Ruyi Jiao, Yuting Hu, Lingyun Liu, J. Tao

{"title":"UV Light-Induced Degradation of Industrial Silicon HJT Solar Cells: Degradation Mechanism and Recovery Strategies","authors":"Po-Chuan Yang, Shehroz Razzaq, Ruyi Jiao, Yuting Hu, Lingyun Liu, J. Tao","doi":"10.31875/2410-2199.2023.10.04","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.04","url":null,"abstract":"Abstract: The demand for Silicon heterojunction solar cells (HJT) has significantly grown recently. These solar cells have gained recognition for their remarkable performance, which can be attributed to the exceptional passivation properties of bilayers consisting of intrinsic and doped hydrogenated amorphous silicon. This study investigates alternative recovery methods and looks into the deterioration caused by UV radiation in commercial Silicon HJT solar cells. The carrier lifetimes of the samples were measured before and after the HJT solar cells were exposed to ultraviolet radiation. The findings revealed a decrease in carrier lifetime, iVoc, and iFF, indicating the creation of defects in the bulk of a-Si:H and the interface between c-Si and a-Si:H. It was assessed how SiOx performed as a passivation layer. It has been discovered that SiOx can passivate dangling bonds, increase carrier lifetime and reduce trap density. In addition, recovery techniques like current injection, infrared, light soaking, and annealing were applied. The current injection, infrared, and light soaking treatments were discovered to be able to partially restore the efficiency of the solar cells without the combination of temperature, while annealing was found to be more effective. Additionally, the effects of both short and prolonged exposure to UV are investigated. The HJT solar cells exposed to prolonged UV radiation for an extended period of time could not fully regain their efficiency and displayed irreparable flaws. Overall, this study demonstrates the potential of recovery treatments and passivation techniques in increasing the efficiency of Si HJT solar cells and illuminates the processes underlying ultraviolet-induced deterioration. Overall, this study sheds light on ultraviolet-induced degradation mechanisms and highlights the potential of recovery treatments and passivation techniques in enhancing the efficiency of Si HJT solar cells.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133167150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CdS Covered with Ga-P Electron Exchange Membrane for Efficient Photocatalytic Hydrogen Prodection Ga-P电子交换膜覆盖CdS的高效光催化制氢研究

Journal of Solar Energy Research Updates Pub Date : 2023-06-22 DOI: 10.31875/2410-2199.2023.10.03

Zejin Wang, Linqing Zhang, Zhiliang Jin

{"title":"CdS Covered with Ga-P Electron Exchange Membrane for Efficient Photocatalytic Hydrogen Prodection","authors":"Zejin Wang, Linqing Zhang, Zhiliang Jin","doi":"10.31875/2410-2199.2023.10.03","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.03","url":null,"abstract":"Abstract: CdS is one of the best semiconductor photocatalysts. However, photocorrosion will occur when CdS takes part in the photocatalytic system. The general solution is to add sacrificial reagents to inhibit this phenomenon. Even so, it can not maintain the stability of CdS. In order to improve the stability and efficiency of CdS in pure water, Ga-P electron exchange membrane was designed to modify its surface. Under radiation of visible light, a significant increase can be observed in hydrogen production activity. In the absence of Pt as electron transfer agent, the modification of Ga-P realizes decomposition of pure water from zero to one. At the same time, the hydrogen production rate is increased about 5 times with Pt and catalytic life is greatly extended. Through proof of controlled experiment, Ga-P electron exchange membrane can not only prolong the lifetime of photogenerated electrons, but also change the direction of electrons. The formation of a protective membrane makes composite photocatalyst improve the stability and enhance the photocatalytic activity. Based on the analysis of TEM, fluorescence lifetime, UV-Vis diffuse reflection and photocurrent response, the mechanism is analyzed from atomic radius, nuclear orbit and energy level. For homogeneous electronic band structure and XPS analysis, we determined that the binary catalyst formed an S-scheme heterojunction. The work provides a potential way to design a more efficient and stable composite photocatalyst in the future. And contributed to the development of S-scheme heterojunctions.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116645659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Validation Through a Parallel Computation Algorithm for Evaluation Uncertainty of the Mathematical Model of Direct Expansion Solar Assisted Heat Pump 直接膨胀式太阳能辅助热泵数学模型不确定度评定的并行计算算法实验验证

Journal of Solar Energy Research Updates Pub Date : 2023-05-16 DOI: 10.31875/2410-2199.2023.10.2

W. M. Duarte, Tiago F. Paulino, W. M. Duarte, A. Maia, L. Machado

{"title":"Experimental Validation Through a Parallel Computation Algorithm for Evaluation Uncertainty of the Mathematical Model of Direct Expansion Solar Assisted Heat Pump","authors":"W. M. Duarte, Tiago F. Paulino, W. M. Duarte, A. Maia, L. Machado","doi":"10.31875/2410-2199.2023.10.2","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.2","url":null,"abstract":"This paper presents the development of a mathematical model for a direct-expansion solar-assisted heat pump (DX-SAHP) operating in steady-state. The mathematical model was implemented using the scientific software EES and using a code written in Python. It was utilized a lumped parameter model for the heat exchangers and a semi-empirical model for the compressor. The mathematical model was validated using experimental data of a DX-SAHP running with R134a. Two hundred simulations were made combining different correlations for estimating the convective heat transfer coefficient in the evaporator/collector. The Mean Absolute Deviation (MAD) and the Mean Deviation (MD) between the theoretical and experimental values for the COP were 2.6±1.8 % and 0.9±1.8 %, respectively. The MAD and MD between the discharge temperature were 1.56±0.16 % and -1.45±0.16 %. The mean difference between the results using EES and Python were 1.4 %. The use of Python with parallel computing for uncertainty analyses, reduced the simulation time in 88 % if compared with EES. The model in Python is available as open-source through the platform Google Colaboratory.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129517653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Technical and Economic Assessment of the Use of an Autonomous Photoelectric Water Lift Installation in the Karakum Desert 喀喇库姆沙漠自主光电升水装置的技术经济评价

Journal of Solar Energy Research Updates Pub Date : 2023-05-07 DOI: 10.31875/2410-2199.2023.10.01

Penjiyev Ahmet Myradowich

{"title":"Technical and Economic Assessment of the Use of an Autonomous Photoelectric Water Lift Installation in the Karakum Desert","authors":"Penjiyev Ahmet Myradowich","doi":"10.31875/2410-2199.2023.10.01","DOIUrl":"https://doi.org/10.31875/2410-2199.2023.10.01","url":null,"abstract":"Abstract: One of the urgent problems of Turkmenistan is the development of desert territories, which occupies 80%. The task of scientific research is to analyze the problems of energy supply and water supply for the development of the desert and the desertification of this territory. One of the priority energy supply is the use of renewable energy sources, water supply, the use of groundwater. The article considers the eco-energy resources and potentials of solar energy for lifting water from the depths, using technical and economic methods to evaluate capital investments, investment costs and energy efficiency of solar photovoltaic water lifting stations in the Karakum Desert. The given methodology for technical and economic calculations, capital investments, investment costs and evaluation of the effectiveness of operational parameters for use in transhumance will be useful in the preparation of a feasibility study (feasibility study). On the basis of solar - energy resources, calculate, draw up an energy map of the rise of water from the depth of occurrence and evaluate the technical and economic indicators for the development of the Karakum desert and the development of transhumance.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123303688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research Progress of Fixed Bed Dehumidification System: A Mini Review 固定床除湿系统的研究进展

Journal of Solar Energy Research Updates Pub Date : 2022-12-28 DOI: 10.31875/2410-2199.2022.09.11

Xin Xiao, Zhengliang Han

{"title":"Research Progress of Fixed Bed Dehumidification System: A Mini Review","authors":"Xin Xiao, Zhengliang Han","doi":"10.31875/2410-2199.2022.09.11","DOIUrl":"https://doi.org/10.31875/2410-2199.2022.09.11","url":null,"abstract":"Abstract: In recent years, the fixed bed dehumidification system has received extensive attention. Research shows that the fixed bed can be combined with the vapor compression refrigeration system to replace the traditional air conditioning (A/C) system, improve the dehumidification efficiency of the system and reduce energy consumption of A/C. In this study, the optimization and improvement methods of the fixed bed dehumidifier in recent years are introduced in detail firstly. It points out that adding heating/cooling devices to the fixed bed can greatly improve the dehumidification capacity and efficiency of the system, which is the main method to improve the fixed bed currently; Optimizing the structure of fixed bed is also an effective method, but the current research results have limited improvement on dehumidification performance; Optimizing the regeneration mode of fixed bed can improve the utilization rate of renewable energy and improving the overall dehumidification efficiency of the system, but the research in the direction is still insufficient; The parallel double packed bed structure can ensure the continuous operation of the fixed bed to improve the dehumidification efficiency of the system, but such systems are large in scale and high in cost. Then the dehumidification performances of various systems are summarized and comprehensively compared. Finally, the future optimization and improvement direction of the fixed bed is pointed out.","PeriodicalId":197215,"journal":{"name":"Journal of Solar Energy Research Updates","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134187946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0