ACS Applied Materials & Interfaces最新文献_第5页

Optimizing Self-Assembled Monolayers via Boronic Acid for High-Performance Inverted Perovskite Solar Cells. 通过硼酸优化高性能倒钙钛矿太阳能电池的自组装单层膜。

IF 8.2 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-30 DOI: 10.1021/acsami.5c15948

Lijun Gao, Jiawei Gao, Kaixuan Jia, Lujian Jia, Shuixing Dai, Yan Zhang, Minghua Huang, Heqing Jiang

{"title":"Optimizing Self-Assembled Monolayers via Boronic Acid for High-Performance Inverted Perovskite Solar Cells.","authors":"Lijun Gao, Jiawei Gao, Kaixuan Jia, Lujian Jia, Shuixing Dai, Yan Zhang, Minghua Huang, Heqing Jiang","doi":"10.1021/acsami.5c15948","DOIUrl":"https://doi.org/10.1021/acsami.5c15948","url":null,"abstract":"Due to the high power conversion efficiency and low fabrication cost, inverted (p-i-n) perovskite solar cells (PSCs) have attracted significant attention in recent years. However, the commonly used self-assembled monolayers (SAMs), such as [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz), tend to aggregate in solution, resulting in inhomogeneous film coverage, which negatively affects perovskite crystallization and overall device performance. To address this issue, we introduce two small-molecule additives─4-methoxyphenylboronic acid (MeO-BOH) and 2-methoxypyridine-5-boronic acid (MeO-N-BOH)─to regulate intermolecular interactions, suppress aggregation, and improve SAM distribution, energy-level alignment, and charge extraction. The optimized interface exhibits a higher work function, reduced interfacial recombination, and a stronger built-in electric field. As a result, the unencapsulated inverted PSCs incorporating MeO-N-BOH achieve a power conversion efficiency (PCE) of 24.75% and retain 80.5% of their initial efficiency after 700 h of maximum power point (MPP) tracking under continuous illumination, significantly outperforming the control devices (PCE = 22.39%). These findings highlight the potential of the boronic acid additive modification strategy in enhancing both the performance and operational stability of PSCs.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Electrical Stimulation-Driven Strategy for Peroxide-like Enzyme Reactivation toward Sustainable Wastewater Sterilization. 电刺激驱动的过氧化物样酶再激活策略对废水的可持续灭菌。

IF 8.2 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-30 DOI: 10.1021/acsami.5c12970

Jingyang Fang, Guopeng Xu, Paul K Chu, Jianzhong Du, Guomin Wang

{"title":"An Electrical Stimulation-Driven Strategy for Peroxide-like Enzyme Reactivation toward Sustainable Wastewater Sterilization.","authors":"Jingyang Fang, Guopeng Xu, Paul K Chu, Jianzhong Du, Guomin Wang","doi":"10.1021/acsami.5c12970","DOIUrl":"https://doi.org/10.1021/acsami.5c12970","url":null,"abstract":"Metal-based enzyme mimics face irreversible deactivation due to the oxidation of active metal centers, limiting their sustainability in wastewater treatment. To meet this important challenge, we introduce an electrical stimulation strategy by designing Fe-doped titanium dioxide nanolines (Fe-TNLs) that mimic peroxidase (POD) activity and regenerate catalytic function, enabling enzyme reuse. The Fe-TNLs exhibit robust POD-like activity by catalyzing the decomposition of H2O2 into hydroxyl radicals (•OH), achieving over 99.9% inactivation againstEscherichia coli and Staphylococcus aureus during the initial cycle. Unlike conventional Fe-based POD mimics, which are rapidly deactivated due to the oxidation of Fe(II) to Fe(III), this system achieves a reversible Fe(III)/Fe(II) redox cycle through electrical charging, restoring over 80% of the initial catalytic efficiency. Moreover, the reactivated Fe-TNLs maintain effective performance in simulated wastewater and retain approximately 60% of their initial efficacy after reactivation, outperforming single-use systems. By emphasizing sustainable reusability over single-use designs, this work offers a compelling approach for advancing environmentally friendly wastewater remediation technologies.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photochemically Assisted Formation of Layered Manganese Oxide Nanosheets with High Pseudocapacitance for Potential Environmental Applications. 光化学辅助形成具有高赝电容的层状氧化锰纳米片用于潜在的环境应用。

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-30 DOI: 10.1021/acsami.5c10288

Zhenwei Gao,Mingyang Song,Ying Wang,Luciano M Santino,Julio M D'Arcy,Young-Shin Jun

{"title":"Photochemically Assisted Formation of Layered Manganese Oxide Nanosheets with High Pseudocapacitance for Potential Environmental Applications.","authors":"Zhenwei Gao,Mingyang Song,Ying Wang,Luciano M Santino,Julio M D'Arcy,Young-Shin Jun","doi":"10.1021/acsami.5c10288","DOIUrl":"https://doi.org/10.1021/acsami.5c10288","url":null,"abstract":"Manganese (Mn) oxides have attracted considerable attention for their affordability, environmental compatibility, and favorable electrochemical properties, making them promising materials for various environmentally relevant electrochemical applications, such as capacitive deionization and ion-selective electrochemical separations. However, conventional Mn oxide synthesis methods typically involve strong oxidants, external heating, extended synthesis times, or expensive equipment, underscoring the need for a greener, more energy-efficient synthesis approach for Mn oxides with reduced environmental footprints. Inspired by the natural Mn oxidation process driven by sunlight-induced reactive radicals, this study presents a greener and photochemically assisted method for synthesizing Mn oxide solids by optimizing aqueous chemistry conditions to accelerate Mn2+ oxidation. During nitrate photolysis in the presence of a pyrophosphate buffer, Mn2+ was rapidly oxidized to form birnessite, eliminating the need for external heating and significantly reducing energy input. The resulting Mn oxides exhibited high pseudocapacitance performance, achieving a capacitance of 172.4 ± 16.6 F/g, surpassing Mn oxides synthesized via redox oxidation (144.1 ± 4.2 F/g) and those commercially purchased (14.5 ± 0.6 F/g). By integrating enhanced pseudocapacitance with sustainable, energy-efficient synthesis, this study introduces a promising strategy for producing Mn oxides with significant potential for environmentally relevant electrochemical applications.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"87 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the Performance of Vacuum-Deposited Perovskite Light-Emitting Diodes via a Tailored Sequential Deposition Strategy. 通过定制顺序沉积策略提高真空沉积钙钛矿发光二极管的性能。

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-30 DOI: 10.1021/acsami.5c12257

Nakyung Kim,Yunna Kim,Jiyoung Kwon,Gui-Min Kim,Hee Joon Jung,Jinu Park,Sukki Lee,Seoyeon Park,Doh C Lee,Yu-Ching Huang,Byungha Shin

{"title":"Improving the Performance of Vacuum-Deposited Perovskite Light-Emitting Diodes via a Tailored Sequential Deposition Strategy.","authors":"Nakyung Kim,Yunna Kim,Jiyoung Kwon,Gui-Min Kim,Hee Joon Jung,Jinu Park,Sukki Lee,Seoyeon Park,Doh C Lee,Yu-Ching Huang,Byungha Shin","doi":"10.1021/acsami.5c12257","DOIUrl":"https://doi.org/10.1021/acsami.5c12257","url":null,"abstract":"Vacuum-deposited perovskite light-emitting diodes (PeLEDs) are attracting increased attention owing to their precise thickness control and absence of solvent-orthogonality constraints, offering significant potential for optimizing device performance. Here, we systematically compare how varying the deposition sequence of a single additive, triphenylphosphine oxide (TPPO)─known for its effective defect passivation─critically affects the crystallization dynamics, film morphology, and optoelectronic properties. Two distinct deposition strategies were compared: Co-passivation (simultaneous deposition of CsBr, PbBr2, and TPPO) and sequential-passivation (alternating ultrathin TPPO layers and perovskite layers). While Co-passivation delayed crystallization until annealing, sequential-passivation enabled partial crystallization during deposition, leading to smoother, more uniform films with higher photoluminescence quantum yield. Moreover, we demonstrate that TPPO induces quasi-2D perovskite formation, and to the best of our knowledge, this is the first report showing that a nonamine-based organic molecule induces quasi-2D formation. As a result, sequential-passivation devices achieved a higher external quantum efficiency (EQE) up to 10.9% and enhanced operational stability (T50 = 44 min) compared to Co-passivation devices (EQE = 7.4%, T50 = 16 min). This study highlights the importance of additive deposition sequence in determining the crystallization mechanism and optoelectronic properties of perovskite films, providing insights for designing high-performance vacuum-processed PeLEDs.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"2 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pure Blue Emissive Lead Halide Perovskite Materials for Light-Emitting Diodes: Preparation, Progress, and Challenges. 用于发光二极管的纯蓝色发光铅卤化物钙钛矿材料：制备、进展和挑战。

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-30 DOI: 10.1021/acsami.5c09129

Wentao Li,Qing Hu,Yanqiao Xu,Hezhen Wu,Jianpeng Tang,Li Wang,Feng Jiang,Guo Feng,Jianmin Liu,Lianjun Wang,Wan Jiang

{"title":"Pure Blue Emissive Lead Halide Perovskite Materials for Light-Emitting Diodes: Preparation, Progress, and Challenges.","authors":"Wentao Li,Qing Hu,Yanqiao Xu,Hezhen Wu,Jianpeng Tang,Li Wang,Feng Jiang,Guo Feng,Jianmin Liu,Lianjun Wang,Wan Jiang","doi":"10.1021/acsami.5c09129","DOIUrl":"https://doi.org/10.1021/acsami.5c09129","url":null,"abstract":"Metal halide perovskite nanocrystals (NCs) have emerged as promising candidates for next-generation materials in high-resolution and full-color displays owing to their exceptional color purity, high photoluminescence quantum yield (PLQY), and wide color gamut. Extensive research efforts have been dedicated to advancing the practical application of perovskite NCs in displays systems. To date, the external quantum efficiency (EQE) of red, green, and blue perovskite light-emitting diode (PeLED) devices has been boosted to over 25%, approaching the performance levels of cadmium-based LEDs. However, the performance of pure blue PeLEDs still falls short of the requirements for next-generation displays, posing a significant obstacle to the commercialization of perovskite NCs. This review begins by exploring strategies for achieving pure blue emissive perovskite NCs, including the use of mixed halides, quasi-2D perovskite structures, and quantum size effects. Subsequently, we provide a comprehensive overview of the current research landscape concerning CsPbBr3 NCs with various dimensions, including quantum dots (0D), nanowires or nanorods (1D), and nanoplates (2D). These dimensional variations enable theeffective tuning of emission wavelength of NCs through quantum size effects, realizing their pure blue emission. Furthermore, we discuss approaches to enhance the photoelectric performance of pure-blue-emitting PeLEDs by optimizing key components such as the electron transport layer, hole transport layer, and perovskite emissive layer. Finally, we outline future directions and prospects for further improving the EQE of pure-blue-emitting PeLEDs.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"39 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the Role of Zinc on the Nanotitania Network in Determining the In Vitro and In Vivo Characteristics of Titanium-Based Orthopedic Implants. 揭示锌在纳米二氧化钛网络中的作用，以确定钛基骨科植入物的体外和体内特性。

IF 8.2 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-30 DOI: 10.1021/acsami.5c13421

Sreya P V, Ann Mary Mathew, Kalimuthu Vignesh, Chandran Manimegalai Swathi, Balamuthu Kadalmani, Deepak K Pattanayak

{"title":"Unveiling the Role of Zinc on the Nanotitania Network in Determining the In Vitro and In Vivo Characteristics of Titanium-Based Orthopedic Implants.","authors":"Sreya P V, Ann Mary Mathew, Kalimuthu Vignesh, Chandran Manimegalai Swathi, Balamuthu Kadalmani, Deepak K Pattanayak","doi":"10.1021/acsami.5c13421","DOIUrl":"https://doi.org/10.1021/acsami.5c13421","url":null,"abstract":"This study focuses on the development of a Zn-incorporated biomimetic nanotitania network layer on Ti metal, formulated to replicate the microporous structure of natural bone. Varying concentrations of Zn were subjected to surface property evaluation concerning phase, hydrophilicity, and surface roughness for an optimal surface interface in in vitro and in vivo studies. The alkali treatment has created an improved roughness profile and water contact angle over the surface-modified samples, which strengthens the implant interface, ensuring long-term stability and improved bone integration. The incorporation of Zn onto the nanotitania layer and its subsequent heat treatment at 600 °C have supported the formation of ZnO along with a dominant anatase TiO2 over the modified surface, contributing to the antibacterial activity against Staphylococcus aureus and Escherichia coli. The cytocompatibility of MG63 cells toward varying concentrations of Zn was evaluated for in vitro characteristics by assessing cytoskeletal attachment, mitochondrial potential, live-dead evaluation, extracellular matrix mineralization, and ALP activity. Further, utilizing the additive manufacturing technology, porous Ti scaffolds were fabricated and subsequently surface functionalized with an optimized concentration of Zn for in vivo studies in a rat (Rattus norvegicus) model to evaluate the bone-implant integration. The rat bone defect model examined by X-ray imaging, micro-CT, and osteogenic gene expression profile was suggestive of superior osseointegration properties of our optimal Zn concentration in comparison with the bare Ti scaffold. Hence, this Zn-incorporated biomimetic titania nanonetwork layer is expected to maintain a delicate balance to promote bone healing and avoid toxic effects in clinical trials.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lignocellulosic Interfacially Complexed Cryogels as Robust Electromagnetic Wave Dissipators. 木质纤维素界面络合低温材料作为强健的电磁波衰减器。

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-29 DOI: 10.1021/acsami.5c07437

Zhuoqing Zhang,Seyyed Alireza Hashemi,Dingyuan Zheng,Ali Akbar Isari,Feng Jiang,Guodong Liu,Mohammad Arjmand

{"title":"Lignocellulosic Interfacially Complexed Cryogels as Robust Electromagnetic Wave Dissipators.","authors":"Zhuoqing Zhang,Seyyed Alireza Hashemi,Dingyuan Zheng,Ali Akbar Isari,Feng Jiang,Guodong Liu,Mohammad Arjmand","doi":"10.1021/acsami.5c07437","DOIUrl":"https://doi.org/10.1021/acsami.5c07437","url":null,"abstract":"The poor structural integrity of the lignin-containing cellulosic cryogels and the requirement for delignification processes restricted their functionality. The development of lignocellulose nanofibrils (LCNFs) directly from lignocellulosic biomass has addressed these limitations. However, their application in electromagnetic (EM) shielding presents new challenges, including their inherently insulating nature and significant shrinkage during thermal annealing. This was addressed using the art of interfacial complexation. The employed approach leverages the jamming of synergized LCNFs with graphene oxide (GO) and/or metal-organic frameworks (MOFs) at the oil/water interface, driven by electrostatic interactions with amine-terminated ligands. This process forms a stable lignocellulosic jammed emulsion gel template, which can be converted into cryogels through freezing and lyophilization. The resulting ultralightweight GO-LCNF cryogels (density: 2.69 mg cm-3) exhibited exceptional flexibility, with 80% compressibility and instant shape recovery after thermal annealing. This hybridization enables the minimization of volume shrinkage upon thermal treatment, achieving structural integrity comparable to that of cryogels derived from delignified cellulose nanofibrils (CNFs). The fabricated cryogels exhibited promising electromagnetic (EM) shielding performance, with a shielding effectiveness (SE) of 46.7 dB and specific shielding effectiveness over thickness (SSE/t) ranging from 19,184 to 24,327 dB cm2 g-1. Upon complexation with magnetic MOFs, the thermally annealed cryogels transform into potent absorption-dominant EM shielding systems with an absorbance of 0.62-0.67. These cryogels effectively mitigate induced surface reflections on metallic substrates, positioning them as powerful solutions to meet the growing technological demand for robust absorption-dominant EM shielding materials.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"67 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanocomposite-Based Smart Ocular Sensors: Opportunities, Challenges, and Future Directions. 基于纳米复合材料的智能眼传感器：机遇、挑战和未来方向。

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-29 DOI: 10.1021/acsami.5c14400

Chunyi Ji,Jiaying Zhang,Zhimin Tang,Jing Ji

{"title":"Nanocomposite-Based Smart Ocular Sensors: Opportunities, Challenges, and Future Directions.","authors":"Chunyi Ji,Jiaying Zhang,Zhimin Tang,Jing Ji","doi":"10.1021/acsami.5c14400","DOIUrl":"https://doi.org/10.1021/acsami.5c14400","url":null,"abstract":"Millions of people suffer from various ocular disorders, and conventional diagnostic and therapeutic strategies pose persistent challenges for early diagnosis and effective treatment. With the rapid advancement of nanotechnology, functional nanocomposites consisting of various nanofillers and matrices have been widely explored as smart sensors for ophthalmology management. Herein, we comprehensively overview the nanocomposite-based smart ocular sensors, predominantly including ocular movement sensors, intraocular pressure sensors, ocular biofluid sensors, and artificial retina prostheses, particularly for the management of dry eye syndrome, glaucoma, diabetic retinopathy, and retinal degeneration. We further describe how customized smart ocular sensors offer transformative solutions for real-time monitoring, noninvasive diagnostics, smart therapy, and intelligent theranostics by leveraging desirable mechanical, electrical, optical, and piezoelectric properties. Additionally, current challenges of nanocomposite-based smart ocular sensors to clinical translation and precision medicine have been deeply discussed, and according future direction has been proposed. By targeting an overview of nanocomposite-based smart ocular sensors with direct ties to unmet clinical needs in ophthalmology, this review may foster collaboration and innovation across materials science, biomedical engineering, nanotechnology, and ophthalmology.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"27 Pt 2 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a Standard Reference Thermoelectric Module: Enhancing Durability and Reproducibility through Metallic Materials and Geometric Thermoelectric Leg Shapes. 标准参考热电模块的开发：通过金属材料和几何热电腿形状增强耐用性和可重复性。

IF 8.2 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-29 DOI: 10.1021/acsami.5c14320

EunA Koo, Hanhwi Jang, Yeon Sik Jung, SuDong Park, Sae-Byul Kang, Min-Wook Oh, Sang Hyun Park

{"title":"Development of a Standard Reference Thermoelectric Module: Enhancing Durability and Reproducibility through Metallic Materials and Geometric Thermoelectric Leg Shapes.","authors":"EunA Koo, Hanhwi Jang, Yeon Sik Jung, SuDong Park, Sae-Byul Kang, Min-Wook Oh, Sang Hyun Park","doi":"10.1021/acsami.5c14320","DOIUrl":"https://doi.org/10.1021/acsami.5c14320","url":null,"abstract":"Reliable standard modules are critical to ensure reproducibility and comparability in thermoelectric measurements across research laboratories. In this study, the development of a standard reference thermoelectric module (SRTEM) is presented to address this unmet need by providing a reproducible calibration platform for cross-laboratory thermoelectric measurement standardization. The SRTEM comprises eight p-n thermocouple pairs formed from metallic alloys─p-type Ni90Cr10 (Chromel) and n-type Cu55Ni45 (Constantan) or Ni95Al2Mn2Si1 (Alumel)─selected for their mechanical durability and bonding compatibility. To increase thermal resistance and ensure the consistent voltage output, a \"hollow hourglass\"-shaped leg geometry was adopted, reducing the effective leg cross-section while maintaining structural integrity. This design yielded an open-circuit voltage (Voc) of 89 mV, achieving a 32.8% improvement over conventional rectangular-leg modules under identical thermal gradients. Direct metal-to-metal bonding without metallization layers resulted in stable electrical contact with low contact resistance. Furthermore, the SRTEM maintained consistent performance over 300 thermal cycles (∼210 h), with no observable degradation in Voc or key output metrics. These results establish the SRTEM as a scientifically validated and practically deployable reference standard, paving the way for standardized, highly reliable thermoelectric evaluations in both academic and industrial settings.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selectivity Optimization of GDC-Based Mixed-Potential Volatile Organic Compound Gas Sensors. 基于gdc的混合电位挥发性有机化合物气体传感器的选择性优化

IF 8.2 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-09-29 DOI: 10.1021/acsami.5c15493

Hanchi Shi, Jiayao Du, Yuanye Pan, Xinyu Li, Jian Liu, Jinyu Song, Yangming Shen, Jinhui Meng, Yingqi Li, Qi Liu, Minghui Cao, Tong Liu

{"title":"Selectivity Optimization of GDC-Based Mixed-Potential Volatile Organic Compound Gas Sensors.","authors":"Hanchi Shi, Jiayao Du, Yuanye Pan, Xinyu Li, Jian Liu, Jinyu Song, Yangming Shen, Jinhui Meng, Yingqi Li, Qi Liu, Minghui Cao, Tong Liu","doi":"10.1021/acsami.5c15493","DOIUrl":"https://doi.org/10.1021/acsami.5c15493","url":null,"abstract":"Selectivity is an important criterion for evaluating the gas-sensing performance of a sensor. In this work, we focus on compounding with a second component into the sensitive material and combining the sensor with machine learning to enhance the selectivity of the sensor. NiFe2O4 and ZnFe2O4 are prepared by the sol-gel method, and ZnFe2O4 is mixed with NiFe2O4 at different mass ratios. The sensor fabricated from the mixed sensitive materials achieves a significant increase in response to five different volatile organic compound (VOC) gases. Among them, the sensor with a NiFe2O4: ZnFe2O4 ratio of 1:2 exhibits the best sensing performance to five VOC gases. This sensor demonstrates a detection range for Triethylamine (TEA) from 0.01 to 100 ppm, with a response value of -97.1 mV for 50 ppm TEA at 350 °C. In addition, the sensor with a NiFe2O4: ZnFe2O4 ratio of 1:3 has an extremely wide detection range for TEA from 2 ppb to 200 ppm. All devices exhibit good humidity resistance and reliable repeatability. To further enhance the selectivity of the device, five machine learning models are trained using eigenvalues of response values, response time, maximum reaction rate, and ratio coefficients. Of these, a recognition rate of 94% for the five gases is achieved using the Random Forest. This work explores the potential of machine learning in the field of sensors and provides an effective method to improve the selectivity of sensors.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0