Journal of Physics-Energy最新文献_第4页

Miniature-scale elastocaloric cooling by rubber-based foils 利用橡胶箔进行微型规模弹性冷却

IF 6.9 3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-28 DOI: 10.1088/2515-7655/ad0cff

Carina Ludwig, Jan Leutner, Oswald Prucker, Jürgen Rühe, Manfred Kohl

{"title":"Miniature-scale elastocaloric cooling by rubber-based foils","authors":"Carina Ludwig, Jan Leutner, Oswald Prucker, Jürgen Rühe, Manfred Kohl","doi":"10.1088/2515-7655/ad0cff","DOIUrl":"https://doi.org/10.1088/2515-7655/ad0cff","url":null,"abstract":"We report on the design and characterization of a demonstrator device for miniature-scale elastocaloric (eC) cooling using a series of natural rubber (NR) foil specimens of 9 × 26.5 mm2 lateral size and thicknesses in the range of 290–900 <italic toggle=\"yes\">μ</italic>m. NR has the potential to meet the various challenges associated with eC cooling, as it exhibits a large adiabatic temperature change in the order of 20 K and high fatigue resistance under dynamic load, while loading forces are low. Owing to the large surface-to-volume ratio of rubber-based foils, heat transfer to heat sink and source elements is accomplished by mechanical contact enabling compact designs. Two actuators are implemented to control the performance in loading direction independent from the performance of mechanical contacting. The study of operation parameters is complemented by lumped-element modeling to understand the cycle frequency-dependent dynamics of heat transfer and resulting cooling capacity. The single-stage device operates in the strain range of 300%–700% and exhibits a temperature span up to 4.1 K, while the specific cooling power reaches 1.1 Wg−1 and the absolute cooling power 123 mW. The performance metrics show a pronounced dependence on foil thickness and heat transfer coefficient indicating a path toward future device optimization.","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"33 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

On (not) deriving the entropy of barocaloric phase transitions from crystallography and neutron spectroscopy 关于从晶体学和中子光谱学中（不）推导出巴洛克相变熵

IF 6.9 3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-23 DOI: 10.1088/2515-7655/ad0d00

Anthony E Phillips, Helen C Walker

引用次数: 0

High-temperature reduction thermochemistry of SrVO_3-δ SrVO3-δ的高温还原热化学

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-10 DOI: 10.1088/2515-7655/ad0b8a

Krishna K Ghose, Yun Liu, Terry J Frankcombe

{"title":"High-temperature reduction thermochemistry of SrVO3-δ","authors":"Krishna K Ghose, Yun Liu, Terry J Frankcombe","doi":"10.1088/2515-7655/ad0b8a","DOIUrl":"https://doi.org/10.1088/2515-7655/ad0b8a","url":null,"abstract":"Abstract The cubic SrVO 3 perovskite oxide is an attractive candidate for high-temperature energy applications due to its favourable features, such as multiple oxidation states cations, high structural and thermal stabilities, ability to accommodate large number of oxygen vacancies, and cost-effectiveness. Herein, the temperature dependent reduction properties of SrVO 3 have been studied in terms of oxygen vacancy concentrations using accurate first-principles calculations to reveal the effects of oxygen vacancy and temperature in the reduction aptitudes of SrVO 3-δ , δ = 0−0.125. The reduction capability of SrVO 3-δ was found to be significantly impacted by increasing oxygen vacancy concentrations and temperatures. Analyses of electronic properties and vibrational properties of SrVO 3-δ in terms of δ revealed the origin of this reduction behavior. The electronic structure analysis showed that the reduction of SrVO 3-δ upon oxygen vacancy formation is highly localized to the neighboring V 4+ t 2g states at the vicinity of the oxygen defect, irrespective of δ. A comparison of the vibrational density of states of the defect-free and defective SrVO 3-δ demonstrated that the ionic contributions to the phonon density of states, and hence to the thermal contributions into the SrVO 3-δ lattices, were significantly disrupted by the introduction of oxygen vacancies, which ultimately impacted to the temperature dependent reduction behavior of SrVO 3-δ .&#xD;","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"82 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135091911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Non-destructive analysis of Pb-acid battery positive plates, based on neutron tomography 基于中子层析成像的铅酸电池正极板无损分析

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-10 DOI: 10.1088/2515-7655/ad0b89

Benedetto Bozzini, Silvia Cazzanti, Raimondo Hippoliti, Zoltán Kis, Ludovica Rovatti, Francesco Tavola

{"title":"Non-destructive analysis of Pb-acid battery positive plates, based on neutron tomography","authors":"Benedetto Bozzini, Silvia Cazzanti, Raimondo Hippoliti, Zoltán Kis, Ludovica Rovatti, Francesco Tavola","doi":"10.1088/2515-7655/ad0b89","DOIUrl":"https://doi.org/10.1088/2515-7655/ad0b89","url":null,"abstract":"Abstract Notwithstanding the in-depth understanding of lead-acid battery degradation processes developed in a time-honoured field of science, there is still wide scope for knowledge-based technological advancements, in particular, targeting positive plate durability. Non-destructive imaging of the internal morphology, structure and chemistry of these components, enabled by neutron-based methods, is capable of disclosing otherwise inaccessible observables, that can form the factual basis for new pathways to device improvement. In this study, we propose a post mortem investigation of as-formed and electrochemically aged positive plates (PP), centered on neutron tomography and complemented by X-ray radiography and scanning-electron microscopy. These complementary imaging methods, thriving on different contrast mechanisms, allow 2D/3D position-sensitive morphological analyses of the nature and evolution of the positive active material (PAM) and of the spines of the PP, including: morphology variation, crack location, porosity distribution and identification of hydrogenated compounds. Specifically, in this work, we have pinpointed the differences in degradation modes - resulting from the application of a standard ageing protocol - of positive plates fabricated in two technologically alternative ways: punching and gravity-casting, showing the superiority of the formed in terms of electrode stability upon charging abuse conditions.","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"83 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135092084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A comprehensive modeling for the CO₂ electroreduction to CO CO2电还原制CO的综合建模

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-07 DOI: 10.1088/2515-7655/ad0a39

Matteo Agliuzza, Candido Fabrizio Pirri, Adriano Sacco

引用次数: 0

2023 Roadmap on ammonia as a carbon-free fuel 2023年氨作为无碳燃料的路线图

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-07 DOI: 10.1088/2515-7655/ad0a3a

William I F David, Gerry D Agnew, René Bañares-Alcántara, James Barth, John Bøgild Hansen, Pierre Bréquigny, Mara de Joannon, Sofia Fürstenberg Stott, Conor Fürstenberg Stott, Andrea Guati-Rojo, Marta Hatzell, Douglas R MacFarlane, Joshua W Makepeace, Epaminondas Mastorakos, Fabian Mauss, Andrew J Medford, Christine Mounaïm-Rousselle, Duncan A Nowicki, Mark A Picciani, Rolf S Postma, Kevin H R Rouwenhorst, Pino Sabia, Nicholas Salmon, Alexandr N Simonov, Collin Smith, Laura Torrente-Murciano, Agustin Valera-Medina

引用次数: 0

Bayesian parameter estimation for characterising mobile ion vacancies in perovskite solar cells 表征钙钛矿太阳能电池中移动离子空位的贝叶斯参数估计

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-07 DOI: 10.1088/2515-7655/ad0a38

Samuel McCallum, Oliver Nicholls, Kjeld Jensen, Matthew V Cowley, Jamie Lerpiniere, Alison B Walker

{"title":"Bayesian parameter estimation for characterising mobile ion vacancies in perovskite solar cells","authors":"Samuel McCallum, Oliver Nicholls, Kjeld Jensen, Matthew V Cowley, Jamie Lerpiniere, Alison B Walker","doi":"10.1088/2515-7655/ad0a38","DOIUrl":"https://doi.org/10.1088/2515-7655/ad0a38","url":null,"abstract":"Abstract To overcome the challenges associated with poor temporal stability of perovskite solar cells, methods are required that allow for fast iteration of fabrication and characterisation, such that optimal device performance and stability may be actively pursued. Currently, establishing the causes of underperformance is both complex and time-consuming, and optimisation of device fabrication thus inherently slow. Here, we present a means of computational device characterisation of mobile halide ion parameters from room temperature current-voltage (J-V) measurements emph{only}, requiring $sim 2$ hours of computation on basic computing resources. With our approach, the physical parameters of the device may be reverse modelled from experimental J-V measurements. In a drift-diffusion model, the set of coupled drift-diffusion partial differential equations cannot be inverted explicitly, so a method for inverting the drift-diffusion simulation is required. We show how Bayesian Parameter Estimation (BPE) coupled with a drift-diffusion perovskite solar cell model can determine the extent to which device parameters affect performance measured by J-V characteristics. Our method is demonstrated by investigating the extent to which device performance is influenced by mobile halide ions for a specific fabricated device. The ion vacancy density $N_0$ and diffusion coefficient $D_I$ were found to be precisely characterised for both simulated and fabricated devices. This result opens up the possibility of pinpointing origins of degradation by finding which parameters most influence device J-V curves as the cell degrades.","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"318 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135475061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Photocatalytic conversion of cellulose into C5 oligosaccharides 纤维素光催化转化为C5低聚糖

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-03 DOI: 10.1088/2515-7655/ad04f1

Nathan Skillen, Aakash Welgamage, Guan Zhang, Peter K J Robertson, John T S Irvine, Linda A Lawton

{"title":"Photocatalytic conversion of cellulose into C5 oligosaccharides","authors":"Nathan Skillen, Aakash Welgamage, Guan Zhang, Peter K J Robertson, John T S Irvine, Linda A Lawton","doi":"10.1088/2515-7655/ad04f1","DOIUrl":"https://doi.org/10.1088/2515-7655/ad04f1","url":null,"abstract":"Abstract Cellulose is made up of linear polymers of glucose monomers that could be a crucial source for valuable chemicals and sustainable liquid fuels. Cellulose is however, very stable and its conversion to a useful fuel or platform chemical products remains a significant challenge (Kimura et al 2015 Sci. Rep. 5 16266; Xia et al 2016 Nat. Commun. 7 11162). Photocatalysis is a versatile technology which has demonstrated potential for solar driven processes such as water splitting or solar fuels production and has also been applied to the degradation of pollutants in air and water and for the production of useful products from biomass. Here, we focus on the products that are produced from cellulose (a glucose (C6) based polymer) photocatalysis that compliment hydrogen production. Probing the initial steps via UV-TiO 2 photocatalysis, we remarkably find that an array of oligosaccharides containing only five (C5) carbon units is initially produced. As the process continues, C6 oligo oligosaccharides grow to dominate. The photocatalytic process is generally not viewed as a controllable synthetic process; however, these findings show, on the contrary that photocatalysis at semiconductor surfaces can achieve novel reaction pathways yielding new products.","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"172 S390","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Core-shell Cu1-xNCo3-y/a-CuFeCo antiperovskite as high-performance anode for Li-ion batteries 核壳Cu1-xNCo3-y/a-CuFeCo反钙钛矿作为锂离子电池的高性能负极

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-02 DOI: 10.1088/2515-7655/ad08d9

SK Mujaffar Hossain, Nikhil Kumar, Bharati Debnath, Satishchandra B Ogale

{"title":"Core-shell Cu1-xNCo3-y/a-CuFeCo antiperovskite as high-performance anode for Li-ion batteries","authors":"SK Mujaffar Hossain, Nikhil Kumar, Bharati Debnath, Satishchandra B Ogale","doi":"10.1088/2515-7655/ad08d9","DOIUrl":"https://doi.org/10.1088/2515-7655/ad08d9","url":null,"abstract":"Abstract Currently, there is an emergent interest in the antiperovskite family of materials in the context of energy applications in view of their distinct and peculiar set of structural and electronic properties. This work examines the surface-modified antiperovskite nitride CuNCo3 as a high-performance anode material for Li-ion storage devices. The antiperovskite CuNCo3 was prepared by the hydrothermal method followed by calcination in the NH3 atmosphere. An amorphous layer on the surface of CuNCo3 (Cu1-xNCo3-y/a-CuFeCo) was also fabricated to enhance its performance as an anode material for Li-ion batteries. The surface-modified Cu1-xNCo3-y/a-CuFeCo material was noted to deliver an extraordinarily high reversible capacity of ~1150 mAh g-1 at a current density of 0.1 A g-1, whereas the CuNCo3 showed a reversible capacity of ~408 mAh g-1 at the same current density. The initial capacity of Cu1-xNCo3-y/a-CuFeCo exhibited excellent retention (>62%) even after 350 cycles. A ~ 6 nm thin amorphous layer around the surface of pure CuNCo3 helped almost double the specific capacity as compared to the pure CuNCo3 due to the presence of a multi-redox centre for Li-ion to react and also concomitantly improved electrical conductivity property. The cyclic stability of the Cu1-xNCo3-y/a-CuFeCo material at a higher current density (0.5 and 1.0 A g-1) was also noticeable. This work opens up new materials routes and promising processing strategies to develop high reversible capacity anodes for alkali ion batteries.","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"13 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135875575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Roll-to-roll double side electrode processing for the development of pre-lithiated 80 F lithium-ion capacitor prototypes 用于开发预锂化80 F锂离子电容器原型的卷对卷双面电极加工

3区材料科学

Journal of Physics-Energy Pub Date : 2023-11-02 DOI: 10.1088/2515-7655/ad064e

María Arnaiz, María Canal-Rodríguez, Silvia Martin-Fuentes, Daniel Carriazo, Aitor Villaverde, Jon Ajuria

{"title":"Roll-to-roll double side electrode processing for the development of pre-lithiated 80 F lithium-ion capacitor prototypes","authors":"María Arnaiz, María Canal-Rodríguez, Silvia Martin-Fuentes, Daniel Carriazo, Aitor Villaverde, Jon Ajuria","doi":"10.1088/2515-7655/ad064e","DOIUrl":"https://doi.org/10.1088/2515-7655/ad064e","url":null,"abstract":"Abstract Lithium-ion capacitors (LICs) show promise to help lithium-ion batteries (LIBs) and electrical double layer capacitors (EDLCs) in giving response to those applications that require an energy storage solution. However, pre-lithiation is a major challenge that needs to be tackled in order to develop efficient and long-lasting LIBs and LICs. In this work, we report for the first time the scale-up and utilization of sacrificial salts (dilithium squarate, Li 2 C 4 O 4 ) as a pre-lithiation strategy in a LIC prototype fabricated in a pilot line. The synthesis of the sacrificial salt is scaled-up to produce 1 kg and is later incorporated in the positive electrode during the slurry formulation. After in-depth process optimization, 12 meter of a double side electrode are fabricated, achieving a high mass loading of 5.5 mg cm −2 for the HC negative electrode, and 14 mg cm −2 for the positive electrode accounting both the activated carbon and the dilithium squarate. On account of the satisfactory mechanical and electrochemical behaviour of the electrodes, multilayer pouch cell LIC prototypes are fabricated reaching 80 F each. Pre-lithiation is completed during the first ten cycles and after the required gas exhaustion, electrochemical performance of prototypes is also satisfactory. Moreover, fabricated pouch cells overcome a float test of 1600 h at 50 °C showing a capacitance retention of 84.3%. These results give clear evidence for the potential use of this strategy in real products and can foster research in the field to promote pre-lithiation by means of sacrificial salts as the final solution to the pre-lithiation step, both for LIBs and LICs.","PeriodicalId":48500,"journal":{"name":"Journal of Physics-Energy","volume":"34 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135973537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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