Energy technology最新文献_第4页

Tailoring Ni/Fe Doping for Superior Thermoelectric Performance of Zr2Ni2−xFexSnSb (x = 0.30, 0.35, 0.40) High-Entropy Alloys 定制Ni/Fe掺杂Zr2Ni2−xFexSnSb （x = 0.30, 0.35, 0.40）高熵合金优越热电性能

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-25 DOI: 10.1002/ente.202401718

Chalchisa Getachew Adamo, Ashutosh Srivastava, Dipanjan Kumar, Surafel Shiferaw Legese, Punathil Raman Sreeram, Neethu Mohan Mangalassery, Yoshihito Kawamura, Femi Emmanuel Olu, Chandra Sekhar Tiwary, Abhishek Kumar Singh, Kamanio Chattopadhyay

{"title":"Tailoring Ni/Fe Doping for Superior Thermoelectric Performance of Zr2Ni2−xFexSnSb (x = 0.30, 0.35, 0.40) High-Entropy Alloys","authors":"Chalchisa Getachew Adamo, Ashutosh Srivastava, Dipanjan Kumar, Surafel Shiferaw Legese, Punathil Raman Sreeram, Neethu Mohan Mangalassery, Yoshihito Kawamura, Femi Emmanuel Olu, Chandra Sekhar Tiwary, Abhishek Kumar Singh, Kamanio Chattopadhyay","doi":"10.1002/ente.202401718","DOIUrl":"https://doi.org/10.1002/ente.202401718","url":null,"abstract":"Half-Heusler (hH) compounds are emerging as promising materials for thermoelectric applications, owing to their exceptional mechanical and thermal stability, combined with the absence of toxic elements. These characteristics make hH compounds an attractive subject for detailed study and potential use in advanced thermoelectric systems. However, its thermoelectric applicability is limited because of high lattice thermal conductivity (κl). Various strategies, such as phase separation, grain-boundary scatterings, and electron–phonon interactions, have been used to reduce κl, which enhances phonon scatterings. Recently, high-entropy hH alloys have gained significant attention due to their distorted structure that inherently incorporates high phonon scattering features, addressing the key issue of hH. Herein, hH high-entropy alloys (Zr2Ni2−xFexSnSb; x = 0.30, 0.35, 0.40) have been synthesized by arc melting and heat treatment. A significantly reduced lattice thermal conductivities (<2.25 W mK−1 at 985 K) are obtained due to the presence of multicomponents, which scatter phonon significantly. Experimental observation is very well complimented with density functional theory findings by analyzing phonon dispersions, chemical bonding, group velocities, and anharmonicity. Thereby, it is demonstrated that a high thermoelectric figure of merit is achieved in the proposed hH high-entropy alloys by strengthening the phonon scatterings.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Large-Area Perovskite Solar Cells with PTAA/Ag Combination: Performance Evaluation of the Solar Cell via SCAPS 1D Simulation PTAA/Ag复合的大面积钙钛矿太阳能电池：基于SCAPS一维模拟的太阳能电池性能评估

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-22 DOI: 10.1002/ente.202400933

Naba Kumar Rana, Tapas Das, Parul Garg, Ashok Bera, Asim Guchhait

{"title":"Large-Area Perovskite Solar Cells with PTAA/Ag Combination: Performance Evaluation of the Solar Cell via SCAPS 1D Simulation","authors":"Naba Kumar Rana, Tapas Das, Parul Garg, Ashok Bera, Asim Guchhait","doi":"10.1002/ente.202400933","DOIUrl":"https://doi.org/10.1002/ente.202400933","url":null,"abstract":"Efficient and stable large-area perovskite solar cells (PSCs) are essential for the translation of the technology. However, the fabrication of large-area PSCs remains very challenging. Uniformity and homogeneity of different layers of a device over a large area are concerning issues. Poly[bis(4-phenyl) (2,4,6-trimethylphenyl) amine] (PTAA) has shown excellency as a hole transport layer (HTL) due to its stability and homogeneity over large areas. This work focuses on large-area (2.0 cm2) PSCs using PTAA as HTL with a device structure of FTO/m-TiO2/RbCs(MAFA)PbI3/PTAA/Ag. This PSC yields a power conversion efficiency (PCE) of 9.35% and retains 72% of the initial PCE even after 2000 h of storage in ambient conditions, which is optimistic for the translation of the technology. The uniformity of the PTAA layer over the large area and proper band alignment at interfaces result in good performance of PSCs. A numerical model is studied for further optimization of this PSC. A large-area monolithic tandem PSC is demonstrated using RbCs (MAFA)PbI3/PTAA combination along with a low bandgap perovskite, yielding a PCE of 21.85% with a VOC of 1.83 V, which is quite significant for an active area of 2 cm2. Therefore, this research will aid success in developing effective and stable large-area PSCs.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in CdTe Thin-Film Solar Cells: Is Doping an Effective Strategy for Performance Enhancement? CdTe薄膜太阳能电池的进展：掺杂是提高性能的有效策略吗？

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-20 DOI: 10.1002/ente.202401542

Ipsita Jena, Udai Pratap Singh

{"title":"Advancements in CdTe Thin-Film Solar Cells: Is Doping an Effective Strategy for Performance Enhancement?","authors":"Ipsita Jena, Udai Pratap Singh","doi":"10.1002/ente.202401542","DOIUrl":"https://doi.org/10.1002/ente.202401542","url":null,"abstract":"Cadmium telluride (CdTe) thin-film solar cells that are introduced in 1970s have emerged as one of the forefront materials of the second generation-based solar cells. They are preferred as an ideal candidate for the fabrication of reliable and economical photovoltaic systems owing to high optical absorption coefficient, nearly optimum bandgap for ensuring maximum conversion efficiency and chemical stability. The major challenges associated with these solar cells are low concentration of carriers, which limits the photovoltaic parameters notably the open-circuit voltage and fill factor as well as short life time of absorber minority carriers. This article explores the pivotal role of doping in enhancing the electrical properties and life time of minority carriers of CdTe solar cells through extensive literature study of the complexity of mechanisms and output parameters achieved in various reported works. Doping has been systematically reviewed with emphasis on types of doping, classification of dopants into group I and group V dopants along with a concise summary of different dopants. This comprehensive review not only evaluates the recent advancements of CdTe solar cells but also addresses these issues and provides future perspectives and paves way for development of improved stable and highly efficient cells.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Excited Species Formation across the Flame of Various Ammonia-Hydrogen Fired Combustor Geometries 不同氨氢燃烧器几何形状火焰中受激物种形成分析

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-19 DOI: 10.1002/ente.202401404

Marco Osvaldo Vigueras-Zuniga, Maria Elena Tejeda del Cueto, Jordan Davies, Syed Mashruk, Agustin Valera-Medina

{"title":"Analysis of Excited Species Formation across the Flame of Various Ammonia-Hydrogen Fired Combustor Geometries","authors":"Marco Osvaldo Vigueras-Zuniga, Maria Elena Tejeda del Cueto, Jordan Davies, Syed Mashruk, Agustin Valera-Medina","doi":"10.1002/ente.202401404","DOIUrl":"https://doi.org/10.1002/ente.202401404","url":null,"abstract":"Although ammonia can be used as a fuel, it also presents drawbacks that require further investigation before the chemical can overtake fossil fuels in combustion systems. The main barriers are the low flammability in combination with high NOx emissions. Although the first barrier can be surpassed by doping ammonia with hydrogen, the second becomes more challenging under these conditions, as hydrogen increases NO emissions due to the increase in H radicals in the chemical pool of species. How the change in radicals impacts the stability of the flame, its reactivity, and emissions profile is of the greatest concern for the use of these net zero fuels. Thus, the work herein presented shows the trends of excited species such as NH*, NH2*, and OH* when using ammonia–hydrogen at 70%–30% (vol) blending. Various equivalence ratios are employed from lean to rich conditions. Results denote that there is a continuous displacement of radicals across the field, with NH2* relocating closer to the centerline of the burner as equivalence ratio increases, while NH* tends to raise its location while dislocating from the production/consumption of OH* radicals. The results can be used to target desirable radicals for the mitigation of emissions and flame control.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202401404","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybridization of Stirling Heat Engine with Solid Oxide Electrolysis Cell: Performance Prediction and Regulation Mechanism 斯特林热机与固体氧化物电解槽的混合：性能预测与调节机制

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-19 DOI: 10.1002/ente.202401491

Shaocheng Lang, Jinliang Yuan

{"title":"Hybridization of Stirling Heat Engine with Solid Oxide Electrolysis Cell: Performance Prediction and Regulation Mechanism","authors":"Shaocheng Lang, Jinliang Yuan","doi":"10.1002/ente.202401491","DOIUrl":"https://doi.org/10.1002/ente.202401491","url":null,"abstract":"Solid oxide electrolysis cell (SOEC) is an advanced green energy storage technology for achieving high-efficiency hydrogen production. However, SOEC generates redundant waste heat in exothermic mode. To improve system exergy efficiency and ensure stable and reliable operation of the SOEC, a novel hybrid system is proposed to mainly comprise an SOEC and a Stirling heat engine (SHE). Mathematical formulas for the exergy efficiency of the SOEC-SHE hybrid system are obtained and applied for this system, and it is found that the exergy efficiency is 69.90%, which is 13.77% higher than that of a single SOEC system when the operating current density is 30 000 A m−2. A mixed orthogonal experiment method is further implemented to analyze the comprehensive effects of various parameters on the exergy efficiency of the SOEC-SHE hybrid system. Operated on the optimal combination of the investigated parameters, the exergy efficiency of the SOEC-SHE hybrid system reaches 82.35%, which is further improved by 17.81%. The results provide valuable theoretical insights for the design and operation of the SOEC-SHE hybrid system.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heating Control Strategy of CO2 Heat Pump Air Conditioning System of Electric Vehicle Based on Waste Heat Recovery Technology 基于余热回收技术的电动汽车CO2热泵空调系统加热控制策略

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401463

Yan Zhang, Yu Zhao, Limin Wu, Liange He

{"title":"Heating Control Strategy of CO2 Heat Pump Air Conditioning System of Electric Vehicle Based on Waste Heat Recovery Technology","authors":"Yan Zhang, Yu Zhao, Limin Wu, Liange He","doi":"10.1002/ente.202401463","DOIUrl":"https://doi.org/10.1002/ente.202401463","url":null,"abstract":"\u0000The control strategy of the thermal management system is crucial for ensuring the thermal comfort of an electric vehicles (EVs) cabin. However, the performance of heat pump air conditioning (HPAC) significantly deteriorates in low-temperature weather conditions. In recent years, the CO2 HPAC system has emerged as a potential solution to address the insufficient heating capacity in such environments. In order to ensure cabin comfort and optimize winter mileage, a three-stage heating control method for CO2 air source heat pump (ASHP) system is proposed in this article. Firstly, a simulation model is established and its feasibility is verified by comparing it with experimental results. Subsequently, the cabin's heating capacity is examined under four different low-temperature conditions (–5, −10, −15, and −20 °C). Optimal opening and closing strategies of each mode are discussed to maintaining the temperature requirements of the cabin. The three-stage heating control strategy demonstrates improvements in battery state of charge performance over 7200 s of running time compared to conventional CO2 ASHP: optimization rates increase by 8.07% at −5 °C, a further increase by 10.03% at −10 °C, a substantial increase by 14.51% at −15 °C, and under extreme conditions of −20 °C, the optimization rate is as high as 16.21%.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of Cause–Effect Relationships between Process Parameters and the Film Formation in the Semidry Electrode Production for Lithium-Ion Batteries 锂离子电池半干电极生产工艺参数与成膜的因果关系研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401759

Matthias Leeb, Nico Schwarz, Rüdiger Daub

{"title":"Identification of Cause–Effect Relationships between Process Parameters and the Film Formation in the Semidry Electrode Production for Lithium-Ion Batteries","authors":"Matthias Leeb, Nico Schwarz, Rüdiger Daub","doi":"10.1002/ente.202401759","DOIUrl":"https://doi.org/10.1002/ente.202401759","url":null,"abstract":"Conventional electrode production for lithium-ion batteries has high energy and plant space demand, due to the high solvent content of the slurry to be processed by slot die or doctor blade coating. By using the semidry electrode production, the solvent content is reduced by more than 50% compared to the conventional electrode production, decreasing energy demand and drying length. Regarding technology readiness level, the semidry electrode production is on the pilot scale, as the basic principles have been shown. However, many unknown cause–effect correlations exist between the process parameters and the product properties. This study aims to analyze process parameter variations and their influence on the geometric, electrochemical, and mechanical properties of the electrode. An experimental design is utilized to obtain statistically relevant conclusions. It is found that the first calender gap and the roller speed influence the mass loading and the porosity of the electrode. The roller speed significantly influences the ionic resistance within the electrode, which may be attributed to the used release foil.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202401759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving Solar Cell Efficiency of Silicon and Silicon Tandem Structure by Using Surface Modification 利用表面改性提高硅和硅串联结构太阳能电池效率

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401514

Maha Nur Aida, Polgampola Chamani Madara, Muhammad Quddamah Khokhar, Hasnain Yousuf, Mengmeng Chu, Rafi Ur Rahman, Sangheon Park, Junsin Yi

{"title":"Improving Solar Cell Efficiency of Silicon and Silicon Tandem Structure by Using Surface Modification","authors":"Maha Nur Aida, Polgampola Chamani Madara, Muhammad Quddamah Khokhar, Hasnain Yousuf, Mengmeng Chu, Rafi Ur Rahman, Sangheon Park, Junsin Yi","doi":"10.1002/ente.202401514","DOIUrl":"https://doi.org/10.1002/ente.202401514","url":null,"abstract":"Silicon heterojunction (SHJ) solar cells face challenges in maximizing energy capture due to limitations in light collection and surface passivation. To address this, the use of SHJ tandem solar cells in a back-to-back configuration is explored, allowing illumination from both sides to enhance light absorption and energy generation. This study aims to improve the stability and efficiency of these cells through Al2O3 and Nafion surface treatments. Al2O3 is deposited to enhance bifacial light collection, while Nafion is applied for surface passivation to increase the fill factor (FF). The method involves adding 0.1–0.6 units of incident light to the rear of the cells to evaluate the effects of these treatments. The results show a 2.06% increase in efficiency with Al2O3 and a 1.72% improvement with Nafion under standard illumination conditions. The optimized tandem SHJ with Al2O3 and Nafion achieves a Jsc of 62.01 mA cm−2, Voc of 650.63 mV, FF of 76.49%, and an efficiency of 30.86%. These findings demonstrate the significant potential of these surface treatments to enhance the overall performance of bifacial back-to-back tandem SHJ solar cells.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Algae-Derived Precursors for Sustainable Electrochemical Energy Storage 藻类衍生的可持续电化学储能前体

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401465

Manas Dongre, Payal Varma, Aravindhalochanan Parthasarathy, Balasubramanian Kandasubramanian

{"title":"Algae-Derived Precursors for Sustainable Electrochemical Energy Storage","authors":"Manas Dongre, Payal Varma, Aravindhalochanan Parthasarathy, Balasubramanian Kandasubramanian","doi":"10.1002/ente.202401465","DOIUrl":"https://doi.org/10.1002/ente.202401465","url":null,"abstract":"The simple production and harvesting of algae, along with its lower environmental impact and fewer geopolitical issues, make it a viable precursor for electrochemical energy storage devices. Algae represent a promising biomaterial for electrode materials in electrochemical energy storage devices, including hard carbon, sol–gel-based anode batteries, sodium batteries, oxygen reduction reaction catalysts in zinc–air batteries, and cathode materials in zinc-ion and lithium-ion batteries. Algae-based batteries are fabricated using methods like pyrolysis, hydrothermal processes, agar-aided dissolution, electrolysis, annealing, and sol–gel methods. Among these, the sol–gel method using agar to construct refillable hydrogel batteries stands out. Agar's compatibility with acetylene black enhances electrochemical properties and offers the advantage of refill ability, which is challenging in metal-ion batteries. Algae carbons have demonstrated enhanced specific capacity and cyclic performance, paving the way for their use in both medical and industrial applications. The article reviews the utilization of algae-based batteries in different industrial and medical pacemaker applications as well as examines the feasibility of the operation of algae-based batteries synthesized through various parameters and precursors.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Supercapacitor Performance of NiCoMn‐Layered Double Hydroxide with Ag–Citrate/Polyaniline Nanocomposites 用硝酸银/聚苯胺纳米复合材料提高镍钴锰层状双氢氧化物的超级电容器性能

IF 3.8 4区工程技术

Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401730

Ammar Makda, Mohsin Ali Marwat, Muhammad Hamza Mahmood, Abdullah Naeem, Syed Muhammad Abdullah, Muhammad Humayun, Muhammad Ramzan Abdul Karim, Mohamed Bououdina, Muhammad Zubair Khan, Muhammad Bilal Hanif

{"title":"Enhancing Supercapacitor Performance of NiCoMn‐Layered Double Hydroxide with Ag–Citrate/Polyaniline Nanocomposites","authors":"Ammar Makda, Mohsin Ali Marwat, Muhammad Hamza Mahmood, Abdullah Naeem, Syed Muhammad Abdullah, Muhammad Humayun, Muhammad Ramzan Abdul Karim, Mohamed Bououdina, Muhammad Zubair Khan, Muhammad Bilal Hanif","doi":"10.1002/ente.202401730","DOIUrl":"https://doi.org/10.1002/ente.202401730","url":null,"abstract":"Layered double hydroxide (LDH) has a layered structure, which makes it a strong candidate for supercapacitors (SC) due to its high surface area. However, they suffer from low conductivity due to insufficient charge transfer across their layers. This research aims to overcome this obstacle by introducing conductive channels among the layers by the addition of Ag–citrate and polyaniline (PANI). Consequently, five electrodes (S1–5) were made from NiCoMn LDH (referred to as LDH henceforth) and 2:1 Ag–citrate and PANI composite (Ag/PANI) in different ratios and made into electrodes. Electrochemical analysis revealed successful improvement in the performance of LDH as the fraction of Ag/PANI increased until it equaled Ag/PANI where the highest specific capacitance of 617 F g−1 was obtained, which is 12% greater than the value for solely LDH electrode (550 F g−1). A device was fabricated with the best electrode (S3) and activated carbon electrode, which demonstrated energy densities and power densities of 41 WhKg−1 and 412.5 W Kg−1 and 14 WhKg−1and 8250 W Kg−1 at 0.5 and 10 A g−1 current densities, respectively. It also exhibited a capacitive retention of about 75% at 3000 galvanostatic charge–discharge cycles. These results encourage the use in of NiCoMn LDH, in a 1:1 ratio with Ag/PANI in SCs due to its remarkable performance.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"51 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0