Johnson Matthey Technology Review最新文献_第6页

Basics of Fourier Analysis of Time Series Data 时间序列数据的傅立叶分析基础

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651322x16433652085975

Carl R. Tipton

引用次数: 0

X-ray Computed Tomography for Failure Mechanism Characterisation within Layered Pouch Cells 层状袋状细胞内失效机制特征的x射线计算机断层扫描

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651322x16595441894422

Drasti Patel, H. Reid, Sarah Ball, D. Brett, P. Shearing

{"title":"X-ray Computed Tomography for Failure Mechanism Characterisation within Layered Pouch Cells","authors":"Drasti Patel, H. Reid, Sarah Ball, D. Brett, P. Shearing","doi":"10.1595/205651322x16595441894422","DOIUrl":"https://doi.org/10.1595/205651322x16595441894422","url":null,"abstract":"Lithium-ion battery (LIB) safety is a multi-scale problem: from the whole-cell architecture to its composite internal 3D microstructures. Substantial research is required to standardise failure assessments and optimise cell designs to reduce the risks of LIB failure. In this work, the failure response of a 1 Ah layered pouch cell with a commercially available NMC cathode and graphite anode at 100 % SOC (4.2 V) is investigated. The mechanisms of two abuse methods; mechanical (by nail penetration) and thermal (by accelerating rate calorimetry) are compared by using a suite of post-mortem analysis methods. Post-mortem whole-cell architectural changes and electrode layer deformations were analysed for both mechanisms using non-invasive X-ray computed tomography. Furthermore, changes to electrode surfaces, bulk microstructures and particle morphologies are compared by following a proposed cell disassembly and post-mortem sample preparation methodology. Building on the insights into critical architectural weak points, electrode behaviours and particle cracks, the reliability of X-ray computed tomography as a guide for LIB failure assessment is demonstrated.","PeriodicalId":14807,"journal":{"name":"Johnson Matthey Technology Review","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67350964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

3D-Printed Photoelectrochemical Cell and its Application in Evaluation of BiVO4 Photoanodes 3d打印光电电化学电池及其在BiVO4光阳极评价中的应用

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651322x16457018428071

G. Dinesh, P. Dessì, Wenming Tong, Roberto González-Gómez, Pau Farràs

引用次数: 0

Study on technical parameters and suitability of Pt-based metallic glasses for jewellery applications 首饰用pt基金属玻璃的技术参数及适用性研究

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651323x16577027080875

L. Schmitt, N. Neuber, M. Eisenbart, L. Cifci, O. Gross, U. E. Klotz, R. Busch

{"title":"Study on technical parameters and suitability of Pt-based metallic glasses for jewellery applications","authors":"L. Schmitt, N. Neuber, M. Eisenbart, L. Cifci, O. Gross, U. E. Klotz, R. Busch","doi":"10.1595/205651323x16577027080875","DOIUrl":"https://doi.org/10.1595/205651323x16577027080875","url":null,"abstract":"Jewellery-specific standardized tests as well as bulk metallic glasses (BMG)-specific testing methods were performed on a series of Platinum (Pt)-based BMGs with and without phosphorous, to evaluate their suitability as jewellery items. Their mechanical properties (elasticity, Young’s modulus as well as Yield stress) were determined by three-point beam bending measurements. Hardness, wear and corrosion resistance were tested in comparison to state of the art crystalline Pt-based jewellery alloys. The Pt-BMG alloys exhibit elastic elongation of about 2%. Compared to conventional crystalline Pt-alloys, their fracture strength of ca. 2 GPa and their hardness of ca. 450 HV1 is four and two times higher, respectively. However, the BMG show less abrasion resistance in the pin disc test than the conventional benchmark alloys, due to adhesive wear and micro cracking. Regarding the corrosion resistance in simulated body fluids, the BMG alloys reveal a slightly higher release of metals, while the tarnishing behaviour is comparable to the benchmark alloys. The P-free Pt-BMG alloy showed a pronounced tarnishing during exposure to air at elevated temperature. The outstanding thermoplastic formability, a special feature of amorphous metals that can be crucial for enabling novel and filigree designs, was determined and quantified for all BMG alloys.","PeriodicalId":14807,"journal":{"name":"Johnson Matthey Technology Review","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67351385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Kelvin Redefinition and Practical Primary Thermometry 开尔文重定义与实用初级测温

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651323x16620342873795

G. Machin

引用次数: 1

Low Temperature and Pressure Single-Vessel Integrated Ammonia Synthesis and Separation using Commercial KATALCO Catalysts 使用商用KATALCO催化剂的低温和压力单容器集成氨合成和分离

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651322x16577001040526

Collin Smith, L. Torrente‐Murciano

{"title":"Low Temperature and Pressure Single-Vessel Integrated Ammonia Synthesis and Separation using Commercial KATALCO Catalysts","authors":"Collin Smith, L. Torrente‐Murciano","doi":"10.1595/205651322x16577001040526","DOIUrl":"https://doi.org/10.1595/205651322x16577001040526","url":null,"abstract":"In recent years, the potential for “green” ammonia produced from renewable energy has renewed the pursuit for a low-pressure, low-temperature ammonia synthesis process using novel catalysts capable to operate under these conditions. In past decades, the trend of decreasing the pressure in the existing Haber-Bosch process to the de facto limit of condensation at 80 bar has been achieved through catalysts such as iron-based ICI’s KATALCO 74-1. By replacing the separation of ammonia via condensation by absorption, the process loop can be integrated into a single-vessel at constant temperature, and the operating region drastically shifts to lower pressures (<30 bar) and temperatures (<380°C) unknown to commercial catalysts. Herein, the low-temperature and low-pressure activity of KATALCO 74-1 and KATALCO 35-8A catalysts is studied and compared to Ru/Cs/CeO2 catalyst known to have low-temperature activity through resistance to hydrogen inhibition. Due to its low-temperature and high-conversion activity, KATALCO 74-1 can be deployed in an integrated reaction and absorptive-separation using MnCl2/SiO2 as absorbent. Although further catalyst development is needed to increase compatibility with the absorbent in a feasible reactor design, this study clearly demonstrates the need to re-evaluate the viability of commercial ammonia synthesis catalysts, especially iron-based ones, for their deployment on novel green ammonia synthesis processes driven exclusively by renewable energy.","PeriodicalId":14807,"journal":{"name":"Johnson Matthey Technology Review","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67350853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Guest Editorial: Innovation in the Manufacturing Sector: The Catalyst for a Decarbonised Future 嘉宾评论:制造业创新:脱碳未来的催化剂

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651322x16631684163315

M. Maroto-Valer

引用次数: 0

Advanced Catalytic Technologies for Compressed Natural Gas – Gasoline Fuelled Engines 压缩天然气-汽油燃料发动机的先进催化技术

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651323x16669674224875

A. Wahbi, A. Tsolakis, J. Herreros, S. Zeraati-Rezaei, O. Doustdar, P. Millington, A. Raj

{"title":"Advanced Catalytic Technologies for Compressed Natural Gas – Gasoline Fuelled Engines","authors":"A. Wahbi, A. Tsolakis, J. Herreros, S. Zeraati-Rezaei, O. Doustdar, P. Millington, A. Raj","doi":"10.1595/205651323x16669674224875","DOIUrl":"https://doi.org/10.1595/205651323x16669674224875","url":null,"abstract":"The main challenges of the CNG engine fuelling in terms of methane abatement in the aftertreatment system are addressed in this study by using different loaded PGM catalysts. A dual-fuel injection strategy of methane-gasoline was implemented where methane gas was port-injected into the intake in stoichiometric conditions at levels corresponding to 20 and 40% energy density replacement of gasoline fuel. High, medium, and low loaded Pd/Rh catalysts were used and compared to study the effect of PGM loading on the catalyst light-off activity for methane. Results indicate that increasing the Pd loading led to significantly earlier light-off temperatures achieved at relatively lower temperatures of 340, 350 and 395oC respectively. However, the benefit diminishes above Pd loading >142.5 g ft-3. The study has also demonstrated that NH3 is formed over the CNG catalyst due to steam-reforming reactions from the increased levels of methane in the exhaust with the dual-fuelling. Hence aftertreatment technologies such as SCR should be adopted to remove them. This further highlights the need to regulate the harmful NH3 emissions from future passenger cars fuelled with CNG. In addition, the benefits of the dual-fuel system in terms of lower engine output CO2, non-methane hydrocarbon (NMHC) and particulate matter (PM) emissions compared to the GDI mode alone are presented.","PeriodicalId":14807,"journal":{"name":"Johnson Matthey Technology Review","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67351686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced Supports for Noble Metal Catalysts in Proton Exchange Membrane Water Electrolysers: A Review 质子交换膜水电解槽中贵金属催化剂的新型载体研究进展

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651323x16648726195503

P. Cabot, M. V. Martínez-Huerta, F. Alcaide

引用次数: 0

“Women in Nanotechnology” “纳米技术中的女性”

IF 2.3 4区化学

Johnson Matthey Technology Review Pub Date : 2022-01-01 DOI: 10.1595/205651322x16379357955860

S. Coles

引用次数: 0