Korean Journal of Chemical Engineering最新文献_第2页

Theoretical Studies on the Electronic Structures of Halide Perovskites: A Critical Review 卤化物钙钛矿电子结构的理论研究述评

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-27 DOI: 10.1007/s11814-024-00336-6

Seongyeon Hwang, Wooyeon Kim, Kyeounghak Kim, Min Jae Ko

引用次数: 0

Qualitative Assessment of PC88A and HBTA Extractants in Lithium Recovery Processes Using Solvent Extraction 溶剂萃取锂回收工艺中PC88A和HBTA萃取剂的定性评价

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-26 DOI: 10.1007/s11814-024-00341-9

Junhyung Seo, Thang Toan Vu, Seungu Cho, Jieun Cha, Yeongeun Choi, Daesung Song

{"title":"Qualitative Assessment of PC88A and HBTA Extractants in Lithium Recovery Processes Using Solvent Extraction","authors":"Junhyung Seo, Thang Toan Vu, Seungu Cho, Jieun Cha, Yeongeun Choi, Daesung Song","doi":"10.1007/s11814-024-00341-9","DOIUrl":"10.1007/s11814-024-00341-9","url":null,"abstract":"<div><p>This study compares the solvent-extraction behavior of lithium (Li) using the cost-effective extractant PC88A (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) and the more expensive extractant HBTA (4,4,4-Trifluoro-1-phenyl-1,3-butanedione). PC88A achieved an optimal extraction rate of 37.6% at pH 5.43, with a maximum rate of 41.4% at pH 7.80. It required six stages at a 5/1 O/A ratio (organic phase-to-aqueous phase ratio) for 98% extraction and three stages at a 15/1 ratio for 100% extraction. In contrast, HBTA showed an optimal extraction rate of 86.2% at pH 6.23 and a maximum rate of 92.9% at pH 11.95. HBTA achieved 100% extraction with three stages at a 1/1 O/A ratio and 98% with one stage at a 5/1 ratio. By applying McCabe–Thiele methods, this study figured out that to achieve a 98% lithium extraction rate at 5/1 of O/A ratio, PC88A requires 6 stages, whereas HBTA achieves the same extraction rate in just 1 stage. This result indicate that a sixfold difference in efficiency if these extractants used in the counter-current solvent-extraction process. These findings reveal HBTA’s striking superiority over PC88A in terms of efficiency. Future studies should include evaluations of equipment and extractant costs, and overall efficiency.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 2","pages":"323 - 328"},"PeriodicalIF":2.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995649","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

Study on Mitigating Membrane Degradation in Degraded Membrane Electrode Assembly of Polymer Electrolyte Membrane Fuel Cell through Temperature and Humidity Control 通过温度和湿度控制减轻聚合物电解质膜燃料电池降解膜电极组件中膜降解的研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-25 DOI: 10.1007/s11814-024-00322-y

Seungtae Lee, Sohyeong Oh, Donggeun Yoo, Kwonpil Park

{"title":"Study on Mitigating Membrane Degradation in Degraded Membrane Electrode Assembly of Polymer Electrolyte Membrane Fuel Cell through Temperature and Humidity Control","authors":"Seungtae Lee, Sohyeong Oh, Donggeun Yoo, Kwonpil Park","doi":"10.1007/s11814-024-00322-y","DOIUrl":"10.1007/s11814-024-00322-y","url":null,"abstract":"<div><p>Polymer electrolyte membrane fuel cells (PEMFCs) have faced challenges in achieving their lifespan goals due to the degradation of the membrane electrode assembly (MEA) during long-term operation. To enhance the durability of PEMFCs, it is necessary to research materials that can improve the durability of the membrane and electrodes, as well as to study operating conditions that can reduce degradation. This paper investigated methods to mitigate the membrane degradation of electrochemically degraded MEAs by controlling humidity and temperature among the operating conditions. MEA was degraded electrochemically by conducting open circuit voltage (OCV) holding, and then the degradation rate according to temperature and humidity changes was observed through fluoride emission rate (FER) change. In a degraded MEA, it is shown that increasing cell humidity accelerates membrane degradation. According to linear sweep voltammetry (LSV) results, this was confirmed to be due to the increase in hydrogen permeability caused by the higher humidity. The decrease in temperature lowered the rate of membrane degradation, which is attributed to a decrease in the rate of radical attack and generation resulting from the temperature decrease. Therefore, it was confirmed that to mitigate membrane degradation in electrochemically degraded MEAs, it is effective to reduce temperature and humidity, thereby decreasing the rate of radical formation.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"157 - 164"},"PeriodicalIF":2.9,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906086","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 Thermal Stability with Cellulose Derivative: A Study on Porosity and Molecular Interactions 纤维素衍生物增强热稳定性：孔隙度和分子相互作用的研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-23 DOI: 10.1007/s11814-024-00338-4

Jae Woo Shin, Sang Wook Kang

{"title":"Enhancing Thermal Stability with Cellulose Derivative: A Study on Porosity and Molecular Interactions","authors":"Jae Woo Shin, Sang Wook Kang","doi":"10.1007/s11814-024-00338-4","DOIUrl":"10.1007/s11814-024-00338-4","url":null,"abstract":"<div><p>In the present investigation, advanced porous membranes were fabricated utilizing a cellulose derivative (CD) characterized by a molecular weight of 380,000, renowned for its thermal stability and mechanical fortitude. A vacuum-assisted technique facilitated the production of membranes endowed with vertically oriented, interconnected channels. Under a regimen of 1 bar pressure within an N<sub>2</sub> atmosphere, the membranes demonstrated specific Gurley values and porosities, illustrating the capability to modulate physical properties through alterations in the CD to glycerin ratios, notably 1:0.9 and 1:1.1. TGA highlighted CD’s elevated melting point and thermal resilience, with glycerin incorporation serving to augment thermal stability, albeit the induction of pores subsequent to the vacuum process slightly attenuated this attribute. SEM analysis substantiated the precise engineering of vertically aligned channels and pores, validating the efficacy of the production methodology. Flux measurement investigations indicated that an increase in glycerin concentration resulted in diminished curvature of the internal channels and an enhanced density of surface pores. FT-IR spectroscopy analyses shed light on the molecular interactions, revealing the influence of glycerin on the energy absorption of the O–H bond within CD, thus fortifying intermolecular bonds. This impact was consistent in samples both before and after the vacuum treatment, indicative of chemical modifications attributed to glycerin addition, particularly manifested in the peak shift around 1050 cm<sup>−1</sup>.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"133 - 142"},"PeriodicalIF":2.9,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906010","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

Interface Engineering Between Membrane and Electrodeposited-IrO2 Electrode Using One-Sided Hot Pressing to Produce Efficient Proton Exchange Membrane Water Electrolyzers 单侧热压膜与电沉积iro2电极界面工程生产高效质子交换膜水电解槽

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-23 DOI: 10.1007/s11814-024-00332-w

Hye Jin Lee, Seunghoe Choe, Donghoon Shin, Inki Jeong, Sung Ki Cho, Sung Jong Yoo, Jin Young Kim, Katie Heeyum Lim, So Young Lee, Hyun S. Park, Kwang Ho Song, Jong Hyun Jang, Hee Young Park

{"title":"Interface Engineering Between Membrane and Electrodeposited-IrO2 Electrode Using One-Sided Hot Pressing to Produce Efficient Proton Exchange Membrane Water Electrolyzers","authors":"Hye Jin Lee, Seunghoe Choe, Donghoon Shin, Inki Jeong, Sung Ki Cho, Sung Jong Yoo, Jin Young Kim, Katie Heeyum Lim, So Young Lee, Hyun S. Park, Kwang Ho Song, Jong Hyun Jang, Hee Young Park","doi":"10.1007/s11814-024-00332-w","DOIUrl":"10.1007/s11814-024-00332-w","url":null,"abstract":"<div><p>Designing the structure of a membrane electrolyte assembly (MEA) is essential to maximizing catalyst utilization and improving the electrode performance at the single-cell level. In this study, one-sided hot pressing was employed to enhance catalyst utilization in an electrodeposited IrO<sub>2</sub> electrode for use in proton exchange membrane water electrolyzer (PEMWE) systems. An oxygen electrode loaded with 0.13 mg<sub>Ir</sub> cm<sup>−2</sup> IrO<sub>2</sub> was prepared via the anodic electrodeposition onto a Ti porous transport layer (PTL), which was subsequently assembled with a Nafion membrane via one-sided hot pressing. The IrO<sub>2</sub>/Ti-PTL electrode penetrated the membrane, and its pores were partially filled with the membrane component. The mean vertical thickness of the zone in which the IrO<sub>2</sub>/Ti-PTL pores are filled with the membrane strongly affected the contact area between the electrode and electrolyte, with greater thickness resulting in a broader electrode/electrolyte interface but reduced reactant (H<sub>2</sub>O) accessibility. The cell current density at 1.7 V and 80 °C was significantly improved to 1.44 A cm<sup>−2</sup> using the one-sided hot pressing approach; these were comparable to the values reported for state-of-the-art particle-type electrodes bearing higher loadings of platinum group metal (PGM) catalysts (~ 0.5 mg). This work highlights the great potential of film-type electrodes for use as low-PGM oxygen electrodes in PEMWEs.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"71 - 79"},"PeriodicalIF":2.9,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906078","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

Influence of Medium Concentration, Surface Properties, and Chemotaxis on Biofilm Formation of Pseudomonas aeruginosa in Microfluidic Channels 介质浓度、表面性质和趋化性对微流控通道中铜绿假单胞菌生物膜形成的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-21 DOI: 10.1007/s11814-024-00340-w

Jae Seong Kim, So-Yeon Jung, Hye-Eun Kim, Chang-Soo Lee

{"title":"Influence of Medium Concentration, Surface Properties, and Chemotaxis on Biofilm Formation of Pseudomonas aeruginosa in Microfluidic Channels","authors":"Jae Seong Kim, So-Yeon Jung, Hye-Eun Kim, Chang-Soo Lee","doi":"10.1007/s11814-024-00340-w","DOIUrl":"10.1007/s11814-024-00340-w","url":null,"abstract":"<div><p>Biofilms, groups of bacteria that adhere to wet surfaces and resist antibiotics, often cause chronic infections and complications with medical devices. Despite their critical role in various environments, a significant gap remains in understanding biofilm dynamics within common ecological settings. Here, we investigate the formation and development of biofilm streamers in microfluidic channels using <i>Pseudomonas aeruginosa</i> PAO1 and its chemotaxis-blind mutant PC4. We find that biofilm streamers consistently form at the corners of microfluidic channels under low-speed flow conditions. We observe that higher concentrations of LB medium lead to the development of mature biofilms, while lower concentrations favor the formation of streamers. Also, the surface properties of the microfluidic channels significantly influence biofilm formation. The PEL-coated surfaces are more favorable to form biofilm streamers compared to bare glass surfaces. Furthermore, we investigate the role of chemotaxis with wild-type PAO1 strains formed streamers differently compared to the PC4 mutant, which confirms that chemotaxis significantly impacts streamer formation. These findings offer valuable insights into the physical and biological factors affecting biofilm development in microfluidic environments and provide important information for further studies on bacterial biofilms.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"121 - 131"},"PeriodicalIF":2.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906066","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

Influence of Acid Washing Using Cattle Manure on Thermogravimetric Characteristics and Pyrolysis Kinetics in a Micro-tubing Reactor 牛粪酸洗对微管反应器热重特性及热解动力学的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-21 DOI: 10.1007/s11814-024-00308-w

Jae-Rak Jeon, In-Jun Hwang, Thuan Anh Vo, Jinsoo Kim, Hyun Tae Hwang, Suk Soon Choi, Seung-Soo Kim

{"title":"Influence of Acid Washing Using Cattle Manure on Thermogravimetric Characteristics and Pyrolysis Kinetics in a Micro-tubing Reactor","authors":"Jae-Rak Jeon, In-Jun Hwang, Thuan Anh Vo, Jinsoo Kim, Hyun Tae Hwang, Suk Soon Choi, Seung-Soo Kim","doi":"10.1007/s11814-024-00308-w","DOIUrl":"10.1007/s11814-024-00308-w","url":null,"abstract":"<div><p>Ash content is known to be one of the problems in the pyrolysis of cattle manure (CM) biomass. In this study, to reduce the ash content in CM, the original material was pretreated with a nitric acid solution, and the effect of the acid-washing pretreatment of CM on the pyrolysis characteristics was investigated. The experiments were performed using a micro-tubing reactor at 375–425 °C with different reaction times. The main components of the inorganic content before and after acid-washing were Ca and K, which decreased after the treatment. As a result of calculating the activation energy at a conversion of 90% using Friedman’s method, it was calculated to be 540.80 kJ/mol for the original sample that decreased to 409.93 and 391.53 kJ/mol for the samples washed with 10 and 20 wt% diluted acid solutions, respectively. In addition, a reaction kinetic model for the CM samples was established using experimental data. It was found that as the ash content decreased by the acid-washing, the char yield decreased, while the yields of bio-oil and gas increased. Finally, the compositions of the gas and bio-oil obtained through the pyrolysis of CM were systematically characterized.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"143 - 155"},"PeriodicalIF":2.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906051","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

Effect of Perovskite Active Layer Thickness on the Performance of Photovoltaic Cells and Radiation Detectors 钙钛矿活性层厚度对光伏电池和辐射探测器性能的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-18 DOI: 10.1007/s11814-024-00330-y

Sung-Pil Yoon, Sung-Jun Park, Ahreum Park, Jangwon Byun, Beomjun Park, Man-Jong Lee

{"title":"Effect of Perovskite Active Layer Thickness on the Performance of Photovoltaic Cells and Radiation Detectors","authors":"Sung-Pil Yoon, Sung-Jun Park, Ahreum Park, Jangwon Byun, Beomjun Park, Man-Jong Lee","doi":"10.1007/s11814-024-00330-y","DOIUrl":"10.1007/s11814-024-00330-y","url":null,"abstract":"<div><p>Perovskite materials are used as the core active layer in a variety of devices, including solar cells and radiation detectors, and the performance of these devices is strongly influenced by the thickness of the perovskite active layer. This study compares the performance of photovoltaic cells and radiation detectors with the same device architecture but different perovskite active layer thicknesses. For perovskite solar cells, the power conversion efficiency (PCE) tends to increase with increasing active layer thickness and then decreases beyond a certain limit. On the other hand, the X-ray response characteristics of perovskite X-ray detectors tend to increase continuously with increasing active layer thickness. This means that the collections of total charges generated by photon or radiation are different, and their collection/recombination mechanisms of the charges generated in the perovskite active layer of each device are different. To realize efficient perovskite-based electro-optical devices, optimization of the device architecture, including the active layer thickness, is essential, and this work aims to provide a direction for the development of X-ray detectors in n-i-p device structures.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3783 - 3789"},"PeriodicalIF":2.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798283","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

A Feasibility Study on the Vaporization of Liquefied Carbon Dioxide Due to Heat Transfer in Submerged Pipeline with Start-Up, Shutdown, and Abnormal Dynamic Simulation Scenarios Prediction 含启动、停机及异常动态模拟情景预测的水下管道换热液化二氧化碳汽化可行性研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-17 DOI: 10.1007/s11814-024-00259-2

Daniel Owusu Asante, Russel J. Galanido, Ilsu Park, Philsung Hwang, Jungki Cheol, Jungho Cho

{"title":"A Feasibility Study on the Vaporization of Liquefied Carbon Dioxide Due to Heat Transfer in Submerged Pipeline with Start-Up, Shutdown, and Abnormal Dynamic Simulation Scenarios Prediction","authors":"Daniel Owusu Asante, Russel J. Galanido, Ilsu Park, Philsung Hwang, Jungki Cheol, Jungho Cho","doi":"10.1007/s11814-024-00259-2","DOIUrl":"10.1007/s11814-024-00259-2","url":null,"abstract":"<div><p>The vaporization of liquefied carbon dioxide (LCO<sub>2</sub>) resulting from heat transfer in undersea pipeline flow was examined in this feasibility study. The study aimed to assess how several factors, including flow velocity, temperature, and height, affected the rate at which CO<sub>2</sub> evaporated in a submerged pipeline. Ansys Fluent and Aspen Plus were two simulation tools used for the analysis. For the assessment, the SRK thermodynamic model was chosen. Start-up, shutdown, and abnormal dynamic studies were further conducted to ascertain the safe operation of the pipeline using Aspen Plus and Aspen Dynamics. The study emphasizes the need to account for and consider heat transfer in the design and operation of these pipelines. It also offers insightful information about the behavior of CO<sub>2</sub> in undersea pipelines. Reliable seabed and oceanographic data were obtained with the corresponding temperatures for the prediction of pipeline landfall. The maximum pressure of 76.61 barg was established at Node 11 but further dropped at the last 200 m pipe segment (N11–N13) to achieve an outlet pressure of 59.72 barg. The pressure loss was due to gravity, since the fluid was directed upward to the sea platform. There was a gradual drop in temperature along the pipeline. The temperature at the pipe outlet was calculated to be 3.33 °C. The results of this study can be applied to improve efficiency and lower the risk of accidents associated with the design and operation of underwater pipelines for the transportation and storage of CO<sub>2</sub>. The findings of this work are significant, since they provide a thorough grasp of how CO<sub>2</sub> behaves in submerged pipes and knowledge that may be utilized to guarantee the effective and safe transit and storage of this material.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"43 - 56"},"PeriodicalIF":2.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906044","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

Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells Employing a Cerium Oxide Passivation Layer 采用氧化铈钝化层增强倒置钙钛矿太阳能电池的光伏性能

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-15 DOI: 10.1007/s11814-024-00333-9

In Choi, Bonkee Koo, Subin Yu, Wooyeon Kim, Min Jae Ko

{"title":"Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells Employing a Cerium Oxide Passivation Layer","authors":"In Choi, Bonkee Koo, Subin Yu, Wooyeon Kim, Min Jae Ko","doi":"10.1007/s11814-024-00333-9","DOIUrl":"10.1007/s11814-024-00333-9","url":null,"abstract":"<div><p>Metal halide perovskite solar cells (PSCs) have achieved a power conversion efficiency (PCE) of 26.7%, establishing them as strong candidates for next-generation solar cell technology owing to their unique optoelectronic properties and solution processability. However, defects at grain boundaries and interfaces within the perovskite layer limit both stability and performance. Therefore, this study aims to mitigate these challenges by introducing a thin layer of amorphous cerium oxide (CeO<sub>x</sub>) as an inorganic passivation layer, offering advantages over conventional organic passivation layers. A thin amorphous CeO<sub>x</sub> passivation layer enhances the built-in electric field in the perovskite, improving charge transfer without the increased resistance of thick layers generally used as electron transport layers (ETLs). This approach yielded an inverted PSC with a PCE of 19.30%, securing high performance with photostability. This result highlights the potential of thin CeO<sub>x</sub> passivation to enhance the efficiency and stability of PSCs.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3813 - 3820"},"PeriodicalIF":2.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798566","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