Small Methods最新文献_第3页

A Photoelectric Synergistic Flexible Solid Slippery Surface for All-Day Anti-Icing/Frosting. 用于全天候防结冰/霜冻的光电协同柔性固体防滑表面。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-13 DOI: 10.1002/smtd.202400859

Ziyuan Chai, Ziyi Teng, Pu Guo, Yueran He, Di Zhao, Xiaobiao Zuo, Kesong Liu, Lei Jiang, Liping Heng

{"title":"A Photoelectric Synergistic Flexible Solid Slippery Surface for All-Day Anti-Icing/Frosting.","authors":"Ziyuan Chai, Ziyi Teng, Pu Guo, Yueran He, Di Zhao, Xiaobiao Zuo, Kesong Liu, Lei Jiang, Liping Heng","doi":"10.1002/smtd.202400859","DOIUrl":"https://doi.org/10.1002/smtd.202400859","url":null,"abstract":"The accumulation of ice on surface has caused great harm to lots of fields such as transportation or aerospace. Nowadays, various equipment or tools used in low-temperature environments, which face the risk of interface icing, usually have irregular shapes. Traditional rigid anti-icing materials are difficult to meet practical application requirements. Thus, it is crucial to develop flexible anti-icing materials that can be applied to various shape surfaces (curved surfaces, flat surfaces). In this paper, a photoelectric synergistic flexible solid slippery surface (FSSS) is prepared by using flexible basalt fiberglass cloth, flexible copper foil, flexible polyurethane/carbon nanotubes mixture, and flexible solid lubricant (the mixture of coconut wax and coconut oil). Even under harsh conditions of the temperature as low as -80 °C, the FSSS exhibits excellent all-day anti/de-icing performance whether on flat or curved surface. Moreover, the FSSS shows long-term stability both on flat and curved surface: situated in air for 60 days, submerged in water for 60 days, kept in acid environment (pH 1) and base environment (pH 13) for 30 days. Besides, the FSSS can also achieve self-healing function under -80 °C. This flexible surface provides a novel approach for de-icing/frosting of multi-shaped objects in the future.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400859"},"PeriodicalIF":10.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613124","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

Advances in Electrically Conductive Hydrogels: Performance and Applications. 导电水凝胶的进展：性能与应用。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401156

Zhiwei Chen, Chenggong Xu, Xionggang Chen, Jinxia Huang, Zhiguang Guo

{"title":"Advances in Electrically Conductive Hydrogels: Performance and Applications.","authors":"Zhiwei Chen, Chenggong Xu, Xionggang Chen, Jinxia Huang, Zhiguang Guo","doi":"10.1002/smtd.202401156","DOIUrl":"https://doi.org/10.1002/smtd.202401156","url":null,"abstract":"Electrically conductive hydrogels are highly hydrated 3D networks consisting of a hydrophilic polymer skeleton and electrically conductive materials. Conductive hydrogels have excellent mechanical and electrical properties and have further extensive application prospects in biomedical treatment and other fields. Whereas numerous electrically conductive hydrogels have been fabricated, a set of general principles, that can rationally guide the synthesis of conductive hydrogels using different substances and fabrication methods for various application scenarios, remain a central demand of electrically conductive hydrogels. This paper systematically summarizes the processing, performances, and applications of conductive hydrogels, and discusses the challenges and opportunities in this field. In view of the shortcomings of conductive hydrogels in high electrical conductivity, matchable mechanical properties, as well as integrated devices and machines, it is proposed to synergistically design and process conductive hydrogels with applications in complex surroundings. It is believed that this will present a fresh perspective for the research and development of conductive hydrogels, and further expand the application of conductive hydrogels.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401156"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613104","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

Solution-Processed Fabrication of Ni₃S₂-Based Nanoheterostructure on Silicon Heterojunction Photocathode for Boosting Solar Hydrogen Generation. 在硅异质结光电阴极上以溶液法制备基于 Ni3S2 的纳米异质结构，用于提高太阳能制氢。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401075

Xiaoming Chen, Yuexiang Li

{"title":"Solution-Processed Fabrication of Ni3S2-Based Nanoheterostructure on Silicon Heterojunction Photocathode for Boosting Solar Hydrogen Generation.","authors":"Xiaoming Chen, Yuexiang Li","doi":"10.1002/smtd.202401075","DOIUrl":"https://doi.org/10.1002/smtd.202401075","url":null,"abstract":"Silicon heterojunction (SHJ) solar cell is an advanced and mature photovoltaic cell. Development of photoelectrochemical (PEC) water splitting devices for hydrogen fuel production using SHJ solar cells is considered as a promising approach to address energy crisis. To achieve this goal, it is necessary to deposit passivation layer and cocatalyst layer on the photoelectrode. However, the development of low-cost and scalable preparation methods for high-quality passivation and cocatalyst layer continues to be a significant challenge. Herein, an efficient passivation layer and hydrogen evolution reaction (HER) catalyst are successfully fabricated via solution processed methods. To improve the HER activity of Ni3S2, a Ni3S2-based nanoheterostructure of crystalline Ni3S2, Ni, and amorphous Y(OH)3 is constructed. The optimized photocathode exhibits excellent PEC-HER performance, which achieves a saturated photocurrent of -35.5 mA cm-2 and an applied bias photon-to-current efficiency (ABPE) of 8.4 ± 0.1% under simulated AM1.5G one-sun illumination and more than 120 h of continuous water splitting. This study paves a way for the design and large-scale manufacturing of cost-efficient SHJ photocathode devices.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401075"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613228","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

Sainsc: A Computational Tool for Segmentation-Free Analysis of In Situ Capture Data. Sainsc：用于原位捕捉数据无分割分析的计算工具

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401123

Niklas Müller-Bötticher, Sebastian Tiesmeyer, Roland Eils, Naveed Ishaque

{"title":"Sainsc: A Computational Tool for Segmentation-Free Analysis of In Situ Capture Data.","authors":"Niklas Müller-Bötticher, Sebastian Tiesmeyer, Roland Eils, Naveed Ishaque","doi":"10.1002/smtd.202401123","DOIUrl":"https://doi.org/10.1002/smtd.202401123","url":null,"abstract":"Spatially resolved transcriptomics (SRT) has become the method of choice for characterising the complexity of biomedical tissue samples. Until recently, scientists were restricted to SRT methods that can profile a limited set of target genes at high spatial resolution or transcriptome-wide but at a low spatial resolution. Through recent developments, there are now methods that offer both subcellular spatial resolution and full transcriptome coverage. However, utilising these new methods' high spatial resolution and gene resolution remains elusive due to several factors, including low detection efficiency and high computational costs. Here, we present Sainsc (Segmentation-free analysis of in situ capture data), which combines a cell-segmentation-free approach with efficient data processing of transcriptome-wide nanometre-resolution spatial data. Sainsc can generate cell-type maps with accurate cell-type assignment at the nanometre scale, together with corresponding maps of the assignment scores that facilitate interpretation of the local confidence of cell-type assignment. We demonstrate its utility and accuracy for different tissues and technologies. Compared to other methods, Sainsc requires lower computational resources and has scalable performance, enabling interactive data exploration. Sainsc is compatible with common data analysis frameworks and is available as open-source software in multiple programming languages.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401123"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613225","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

Strategy for Enhancing Catalytic Active Site: Introduction of 1D material InSeI for Electrochemical CO₂ Reduction to Formate. 增强催化活性位点的策略：引入一维材料 InSeI 用于电化学 CO2 还原成甲酸盐。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401157

Jiho Jeon, Hyeon-Seok Bang, Young-Jin Ko, Jinsu Kang, Xiaojie Zhang, Cheoulwoo Oh, Hyunchul Kim, Kyung Hwan Choi, Chaeheon Woo, Xue Dong, Woong Hee Lee, Hak Ki Yu, Jae-Young Choi, Hyung-Suk Oh

{"title":"Strategy for Enhancing Catalytic Active Site: Introduction of 1D material InSeI for Electrochemical CO2 Reduction to Formate.","authors":"Jiho Jeon, Hyeon-Seok Bang, Young-Jin Ko, Jinsu Kang, Xiaojie Zhang, Cheoulwoo Oh, Hyunchul Kim, Kyung Hwan Choi, Chaeheon Woo, Xue Dong, Woong Hee Lee, Hak Ki Yu, Jae-Young Choi, Hyung-Suk Oh","doi":"10.1002/smtd.202401157","DOIUrl":"https://doi.org/10.1002/smtd.202401157","url":null,"abstract":"The presence of oxygen vacancies (Vo) in electrocatalysts plays a significant role in improving the selectivity and activity of CO2 reduction reaction (CO2RR). In this study, 1D material with large surface area is utilized to enable uniform Vo formation on the catalyst. 1D structured indium selenoiodide (InSeI) is synthesized and used as an electrocatalyst for the conversion of CO2 to formate. The electrochemical treatment of InSeI leads to the leaching of Se and I from the catalyst surface and the formation of Vo. The resulting Vo promotes the activity of the CO2RR, which increases the local pH of the catalyst surface and chemically maintains the oxidized metal sites on the catalyst. Owing to these characteristics, activated In wire exhibited remarkable CO2RR activity, thereby surpassing 93% FEformate at 500 mA cm-2, with a maximum of 97.3% FEformate at 100 mA cm-2. Moreover, the catalytic activity remained consistent for over 50 h at 100 mA cm-2 (FEformate >88%). Thus, the findings imply that using 1D materials can facilitate the formation of oxygen vacancies on the catalyst surface and improve the selectivity and durability of CO2RR. This indicates the potential for further research on 1D materials as electrocatalysts.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401157"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613231","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

Versatile Organometallic Synthesis of 0D/2D Metal@Germanane Nanoarchitectonics for Electrochemical Energy Conversion Applications. 用于电化学能量转换应用的 0D/2D 金属@锗烷纳米结构的多功能有机金属合成。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202400854

Yiming Lei, Xavier Sala, Jordi García-Antón, Jose Muñoz

{"title":"Versatile Organometallic Synthesis of 0D/2D Metal@Germanane Nanoarchitectonics for Electrochemical Energy Conversion Applications.","authors":"Yiming Lei, Xavier Sala, Jordi García-Antón, Jose Muñoz","doi":"10.1002/smtd.202400854","DOIUrl":"https://doi.org/10.1002/smtd.202400854","url":null,"abstract":"Hydrogen-terminated 2D-Germanane (2D-GeH), a germanium-based 2D material akin to graphene, is receiving enormous attention owing to its predicted optoelectronic characteristics. However, experimental research of 2D-GeH is still in an early stage, and therefore its real implementation for task-specific applications will depend on the correct development of suitable chemical functionalization methods. Herein, a general and straightforward organometallic (OM) approach is provided for the robust functionalization of 2D-GeH with different 0D noble metal nanoparticles (M-NPs), resulting in 0D/2D M@GeH nanoarchitectonics. As a proof-of-principle, 0D/2D Pt@GeH and Au@GeH nanoarchitectonics have been successfully synthesized, characterized, and explored as unconventional electrocatalysts for boosting energy conversion reactions. While the hydrogen evolution reaction activity was evaluated for Pt@GeH, the oxygen reduction reaction was interrogated for Au@GeH. Interestingly, the implanted catalytic features of M-NPs yielded to 0D/2D M@GeH nanoarchitectonics with enhanced energy conversion activity comparing to pristine 2D-GeH counterpart. This work proves the suitability of 2D-GeH as unconventional substrates to stabilize nobleM-NPs, and the versatility of the OM approach for the custom design of a new family of 0D/2D M@GeH nanoarchitectonics to expand the implementation of monoelemental 2D materials as promising electrocatalysts in energy conversion field and beyond.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400854"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613247","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

Tuning Electronic and Functional Properties in Defected MoS₂ Films by Surface Patterning of Sulphur Atomic Vacancies. 通过硫原子空位的表面图案化调谐缺陷 MoS2 薄膜的电子和功能特性。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401486

Denis Gentili, Gabriele Calabrese, Eugenio Lunedei, Francesco Borgatti, Seyed A Mirshokraee, Vasiliki Benekou, Giorgio Tseberlidis, Alessio Mezzi, Fabiola Liscio, Andrea Candini, Giampiero Ruani, Vincenzo Palermo, Francesco Maccherozzi, Maurizio Acciarri, Enrico Berretti, Carlo Santoro, Alessandro Lavacchi, Massimiliano Cavallini

{"title":"Tuning Electronic and Functional Properties in Defected MoS2 Films by Surface Patterning of Sulphur Atomic Vacancies.","authors":"Denis Gentili, Gabriele Calabrese, Eugenio Lunedei, Francesco Borgatti, Seyed A Mirshokraee, Vasiliki Benekou, Giorgio Tseberlidis, Alessio Mezzi, Fabiola Liscio, Andrea Candini, Giampiero Ruani, Vincenzo Palermo, Francesco Maccherozzi, Maurizio Acciarri, Enrico Berretti, Carlo Santoro, Alessandro Lavacchi, Massimiliano Cavallini","doi":"10.1002/smtd.202401486","DOIUrl":"https://doi.org/10.1002/smtd.202401486","url":null,"abstract":"Defects are inherent in transition metal dichalcogenides and significantly affect their chemical and physical properties. In this study, surface defect electrochemical nanopatterning is proposed as a promising method to tune in a controlled manner the electronic and functional properties of defective MoS₂ thin films. Using parallel electrochemical nanolithography, MoS₂ thin films are patterned, creating sulphur vacancy-rich active zones alternated with defect-free regions over a centimetre scale area, with sub-micrometre spatial resolution. The patterned films display tailored optical and electronic properties due to the formation of sulphur vacancy-rich areas. Moreover, the effectiveness of defect nanopatterning in tuning functional properties is demonstrated by studying the electrocatalytic activity for the hydrogen evolution reaction.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401486"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613235","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

Engineering MXene Surface via Oxygen Functionalization and Au Nanoparticle Deposition for Enhanced Electrocatalytic Hydrogen Evolution Reaction. 通过氧功能化和金纳米粒子沉积对 MXene 表面进行工程化处理，以增强电催化氢气进化反应。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401569

Mengrui Li, Xiaoxiao Dong, Qinzhu Li, Yaru Liu, Shuang Cao, Chun-Chao Hou, Tong Sun

{"title":"Engineering MXene Surface via Oxygen Functionalization and Au Nanoparticle Deposition for Enhanced Electrocatalytic Hydrogen Evolution Reaction.","authors":"Mengrui Li, Xiaoxiao Dong, Qinzhu Li, Yaru Liu, Shuang Cao, Chun-Chao Hou, Tong Sun","doi":"10.1002/smtd.202401569","DOIUrl":"https://doi.org/10.1002/smtd.202401569","url":null,"abstract":"MXene, a family of 2D transition metal carbides and nitrides, presents promising applications in electrocatalysis. Maximizing its large surface area is key to developing efficient non-noble-metal catalysts for the hydrogen evolution reaction (HER). In this study, oxygen-functionalized Ti3C2Tx MXene (Ti3C2Ox) is synthesized and deposited gold nanoparticles (Au NPs) onto it, forming a novel composite material, Au-Ti3C2Ox. By selectively removing other functional groups, mainly -O functional groups are retained on the surface, directing electron transfer from Au NPs to MXene due to electronic metal-support interaction (EMSI), thereby improving the catalytic activity of the MXene surface. Additionally, the interaction between Au NPs and -O functional groups further enhanced the overall catalytic activity, achieving an overpotential of 62 mV and a Tafel slope of 40.1 mV dec-1 at a current density of -10 mA cm-2 in 0.5 m H2SO4 solution. Density functional theory calculations and scanning electrochemical microscopy with ≤150 nm resolution confirmed the enhanced catalytic efficiency due to the specific interaction between Au NPs and Ti3C2Ox. This work provides a surface modification strategy to fully utilize the MXene surface and enhance the overall catalytic activity of MXene-based catalysts.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401569"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613209","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

Soft Colloidal Electrode Enabled by Water Distribution Control for Ultra-Stable Aqueous Zn-I Batteries. 通过水分布控制实现超稳定水性锌-I 电池的软胶体电极。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401187

Kaiqiang Zhang, Chao Wu, Luoya Wang, Changlong Ma, Jilei Ye, Yuping Wu

{"title":"Soft Colloidal Electrode Enabled by Water Distribution Control for Ultra-Stable Aqueous Zn-I Batteries.","authors":"Kaiqiang Zhang, Chao Wu, Luoya Wang, Changlong Ma, Jilei Ye, Yuping Wu","doi":"10.1002/smtd.202401187","DOIUrl":"https://doi.org/10.1002/smtd.202401187","url":null,"abstract":"Designing effective electrode material is crucial for developing ultra-long lifetime batteries, thereby reducing daily battery costs. Current electrode materials are typically solid or liquid state, with an intermediate colloidal state offering the advantages of fixed redox-active species, akin to solid-state materials, and the absence of rigid atomic structure, akin to liquid-state materials, while avoiding the particle pulverization and uncontrolled migration. Herein, an aqueous Zn||Pluronic F127 (PF127)/ZnI2 colloid battery is developed utilizing the inherent water molecular control effect of ZnSO4. In this system, ZnSO4 in the electrolyte acts as a water molecular valve, regulating the water content within the PF127 polymer to form a PF127 colloid. The resulting aqueous Zn||PF127/ZnI2 colloid battery exhibits an ultra-long cycling lifetime and compatibility with various simulated and practical operating conditions, highlighting its potential for practical applications. Additionally, this battery design concept offers a platform for constructing ultra-stable aqueous batteries.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401187"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613226","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

Highly Active NiRu/C Cathode Catalyst Synthesized by Displacement Reaction for Anion Exchange Membrane Water Electrolysis. 通过置换反应合成用于阴离子交换膜水电解的高活性 NiRu/C 阴极催化剂。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-12 DOI: 10.1002/smtd.202401179

Stephan Ruck, Andreas Hutzler, Simon Thiele, Chuyen van Pham

{"title":"Highly Active NiRu/C Cathode Catalyst Synthesized by Displacement Reaction for Anion Exchange Membrane Water Electrolysis.","authors":"Stephan Ruck, Andreas Hutzler, Simon Thiele, Chuyen van Pham","doi":"10.1002/smtd.202401179","DOIUrl":"https://doi.org/10.1002/smtd.202401179","url":null,"abstract":"Anion exchange membrane water electrolysis (AEMWE) is highly promising for cost-effective green hydrogen production due to its basic operating conditions facilitating the use of non-noble catalysts. While non-noble Ni/Fe-based catalysts are utilized at the anode, its cathode catalyst still requires precious Pt. Due to the high cost of Pt and the sluggish hydrogen evolution reaction (HER) at the cathode in basic conditions, developing alternative catalysts to replace Pt is highly important. Here, a synthesis procedure for a Ru-based catalyst is reported and its high activity toward the HER in alkaline media is demonstrated in both half-cell and single-cell tests. The catalyst is synthesized in a two-step approach. A highly dispersed Ni catalyst is prepared on carbon support in the first step. In the second step, Ru is deposited on its surface using a galvanic displacement reaction. The uniqueness of this method is that Ru is deposited over the entire electrically conductive surface, resulting in an isotropic and homogeneous Ru distribution within the catalyst powder. It is demonstrated that this material remarkably outperforms state-of-the-art Pt/C catalysts in half-cell and single-cell tests. The single cell only requires 1.73 V at 1 A cm-2 with an overall PGM content of 0.05 mg cm-2.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401179"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613222","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