Xindong Zhu , Wen Huang , Yu Lou , Zhongzheng Yao , Huiqiang Ying , Min Dong , Lan Tan , Jianrong Zeng , Hua Ji , He Zhu , Si Lan
{"title":"Ultrafast joule-heating synthesis of FeCoMnCuAl high-entropy-alloy nanoparticles as efficient OER electrocatalysts","authors":"Xindong Zhu , Wen Huang , Yu Lou , Zhongzheng Yao , Huiqiang Ying , Min Dong , Lan Tan , Jianrong Zeng , Hua Ji , He Zhu , Si Lan","doi":"10.1016/j.pnsc.2024.08.005","DOIUrl":"10.1016/j.pnsc.2024.08.005","url":null,"abstract":"<div><div>High entropy alloys (HEAs), known for their synergistic orbital interactions among multiple elements, have been recognized as promising electrocatalysts for enhancing the sluggish kinetics of oxygen evolution reaction (OER). Despite their potential, the facile and rapid preparation of HEA nanoparticles (NPs) with high electrocatalytic activity remains challenging. Here, we report an ultrafast synthesis of noble-metal-free FeCoMnCuAl HEA NPs loaded on conductive carbon fiber networks using a Joule heating strategy. The prepared HEA NPs exhibited a face-centered cubic (FCC) structure with an average size of approximately 25 nm. Synchrotron X-ray absorption fine structure (XAFS) and X-ray photoelectron spectroscopy (XPS) studies were performed to investigate the atomic and electronic structures of the HEA NPs, revealing the co-presence of Fe, Co, Mn, Cu and Al elements as well as their different valences across surface and internal regions. The HEA NPs showed remarkable OER performance, exhibiting an overpotential of 280 mV at 10 mA cm<sup>−2</sup> and a low Tafel slope of 76.13 mV dec<sup>−1</sup> in a 1.0 M KOH solution with high electrochemical stability, superior to commercial RuO<sub>2</sub> electrocatalysts. This work provides a new approach for synthesizing nanoscale noble-metal-free HEA electrocatalysts for clean energy conversion applications on a large-scale basis for practical commercialization.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 880-887"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571249","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}
Binbin He , Yanshan Lu , Jun Jiang , Zhilin Zhan , Baojia Ni , Lijun Lv , Taijun Pan
{"title":"Comprehensive hydrogen storage properties of free-V Ti1-xZrxMn0.9Cr0.7Fe0.1 alloys with different Zr substitution content","authors":"Binbin He , Yanshan Lu , Jun Jiang , Zhilin Zhan , Baojia Ni , Lijun Lv , Taijun Pan","doi":"10.1016/j.pnsc.2024.07.011","DOIUrl":"10.1016/j.pnsc.2024.07.011","url":null,"abstract":"<div><div>Hydrogen has been widely recognized as a promising new renewable energy source. Developing safe and efficient hydrogen storage technologies is crucial for scaling up hydrogen energy applications. AB<sub>2</sub>-type Ti–Mn-based hydrogen storage alloys have excellent kinetic and activation properties, but their comprehensive hydrogen storage performance, especially the hydrogen storage capacity, platform pressure, and cycling stability of low-cost Ti–Mn-based alloys without V, needs to be further optimized. Hence, the hydrogen storage properties of the Ti<sub>1-<em>x</em></sub>Zr<sub><em>x</em></sub>Mn<sub>0.9</sub>Cr<sub>0</sub><sub>.</sub><sub>7</sub>Fe<sub>0.1</sub> (<em>x</em> = 0.05, 0.16, 0.20, 0.25) were systematically studied. All of the series alloys contained a single C14-type Laves phase structure. Increasing the substitution of Zr for Ti resulted in higher hydrogen storage capacities and lower plateau pressures. Notably, the effective hydrogen storage capacity of <em>x</em> = 0.16 alloy is significantly higher than that of the other alloys, and its platform pressure is the most suitable. This alloy achieved a hydrogen content of 1.8 wt% and demonstrated excellent cycling stability, retaining 98.6 % of its capacity after 100 cycles. This study provides a theoretical guideline for optimizing the properties of low-cost TiMn-based alloys without V.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 977-984"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842948","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}
Xinghe Zhang , Yujie Wang , Jin Zou , Sushan Zhao , Hongbo Hou , Wenhua Yao , Huaipeng Wang
{"title":"Unraveling the oxygen evolution activity of biomass-derived porous carbon plate as self-supported metal-free electrocatalyst for water splitting","authors":"Xinghe Zhang , Yujie Wang , Jin Zou , Sushan Zhao , Hongbo Hou , Wenhua Yao , Huaipeng Wang","doi":"10.1016/j.pnsc.2024.07.007","DOIUrl":"10.1016/j.pnsc.2024.07.007","url":null,"abstract":"<div><div><span>Developing the efficient and low-cost electrocatalysts<span><span> derived from biomass is a desired solution to address economy and sustainability challenges of hydrogen production<span> from water electrolysis due to utilizing metal-based catalysts. Herein, the peeled cornstalk-derived porous carbon<span><span> plates synthesized by salt template-assisted high-temperature pyrolysis are utilized as self-supported metal-free </span>electrocatalysts to unravel the oxygen evolution activity for alkaline water splitting. The resultant PC-700-10 honeycomb carbon catalyst exhibits the superior </span></span></span>electrocatalysis<span> for oxygen evolution owning to its high specific surface area of 52.0 m</span></span></span><sup>2</sup> g<sup>−1</sup><span><span>, suitable micro- and meso-pores, electron-withdrawing pyridinic-N moiety and appropriate balance between hydrophilicity and </span>electroconductivity<span><span>. Theoretical calculations reveal that the largest energy barrier of forming ∗OOH limits the OER<span> rate and ∗OH oxidation generates the energetically more favorable </span></span>epoxide intermediate. This finding opens the way to construct the hopeful metal-free OER electrocatalysts via regulating their intrinsic structure, and inspires the applications of waste biomass in the energy-correlated fields.</span></span></div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 967-976"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844460","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}
Xudong Kang , Zhaoxin Du , Shaojun Wang , Jun Cheng , Zhiyong Yue , Tianhao Gong , Jingshun Liu , Shuzhi Zhang
{"title":"Grain refinement and phase precipitation simultaneously improve the strength and ductility of ultra-high strength titanium alloy sheets","authors":"Xudong Kang , Zhaoxin Du , Shaojun Wang , Jun Cheng , Zhiyong Yue , Tianhao Gong , Jingshun Liu , Shuzhi Zhang","doi":"10.1016/j.pnsc.2024.08.001","DOIUrl":"10.1016/j.pnsc.2024.08.001","url":null,"abstract":"<div><div>The simultaneous high strength and high plasticity of metastable-β titanium alloy sheets remains a difficult challenge. In this work, a 1.2 mm thick sheet of Ti–15Mo–3Al-2.7Nb-0.25Si titanium alloy was obtained after rolling and annealing, and then subjected to a duplex-ageing treatment. The pre-ageing temperatures fell in the range of 300–390 °C for 0.5–2h. The re-ageing temperatures were in the range of 500–600 °C. After characterization, it was found that the alloy precipitates ω-phases during the pre-ageing process, and the distribution of such ω-phases evolves unevenly and increases in number with the increase of the pre-ageing temperature. Therefore, the strengthening mechanism of the alloy sheet is mainly α-phase nucleation assisted by ω-phase. Moreover, grain refinement appears as a mechanism to ensure the plasticity of the alloy. Finally the ω-phase evolution law is discussed in detail and the strengthening mechanism of the alloy sheet is also analyzed. At this work, a metastable-β titanium alloy sheet with strength of 1445.75 MPa and elongation of 6.55 % was obtained. This study provides a new idea for the microstructure design and process improvement of the metastable-β titanium alloy sheet.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1066-1075"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571239","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}
Lin Luo , Hongxian Shen , Lunyong Zhang , Zhiliang Ning , Jianfei Sun , Manh-Huong Phan
{"title":"The effect of metal/non-metal ratio on the microstructure and magnetic properties of (MnFe)x(P0.5Si0.5) microwires","authors":"Lin Luo , Hongxian Shen , Lunyong Zhang , Zhiliang Ning , Jianfei Sun , Manh-Huong Phan","doi":"10.1016/j.pnsc.2024.08.004","DOIUrl":"10.1016/j.pnsc.2024.08.004","url":null,"abstract":"<div><div>The effects of metal/non-metal ratio (M/NM = <em>x</em>: 1) on the microstructure and magnetocaloric properties of promising melt-extracted Mn–Fe–P–Si microwires with short heat treatment have been investigated here. More Fe<sub>2</sub>P principal phase, which is considered favorite for magnetocaloric effect (MCE), should achieve at low M/NM ratio and the fraction of Fe<sub>2</sub>P phase increased with the reduction of <em>x</em>. Meanwhile, the (Mn, Fe)<sub>3</sub>Si impurity phase is formed for <em>x</em> = 2.00–1.90 whereas change to (Mn, Fe)<sub>5</sub>Si<sub>3</sub> structure for <em>x</em> = 1.85. It's worth noting that a metal deficiency resulted in the thermal hysteresis (<em>T</em><sub>hys</sub>) and the magnetic hysteresis loss (<em>W</em><sub>y</sub>) decreased by ∼40 %., The magnetic transition temperature (<em>T</em><sub>tran</sub>), peak value of isothermal magnetic entropy change (−<span><math><mrow><mo>Δ</mo><msubsup><mi>S</mi><mtext>iso</mtext><mtext>peak</mtext></msubsup></mrow></math></span>), refrigerant capacity (<em>RC</em>) and effective refrigerant capacity (<em>RCE</em>) first increased then decreased with the decrease of <em>x</em>, and reached the maximums at <em>x</em> = 1.90, i.e., 370 K, 26.0 J kg<sup>−1</sup> K<sup>−1</sup>, 367.4 and 339.8 J kg<sup>−1</sup>, respectively. Therefore, the customizable microstructure and magnetic properties of the melt-extracted (MnFe)<sub><em>x</em></sub>(P<sub>0.5</sub>Si<sub>0.5</sub>) microwires will be achievable effectively by tuning M/NM ratio <em>x</em>, and optimized Mn–Fe–P–Si compounds with novel thermomagnetic properties will be obtained.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1085-1092"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571241","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}
{"title":"Construction of multiple heterogeneous interfaces and oxygen evolution reaction of hollow CoFe bimetallic phosphides derived from MOF template","authors":"Haiqi Zhang, Qingqing Zhang, Xiaojun Zeng","doi":"10.1016/j.pnsc.2024.09.001","DOIUrl":"10.1016/j.pnsc.2024.09.001","url":null,"abstract":"<div><div>Rational design of electrocatalysts is the key to achieving sustainable oxygen evolution reaction (OER). The conjugation of metal organic frameworks (MOFs) with different multicomponent materials to precisely construct heterostructures is fascinating but remains a significant challenge due to different interface energies and nucleation kinetics. In this work, hollow multilayer heterogeneous catalyst (CoFeP/CoFeP/NP-C) was constructed using a rigid template sacrifice approach and an ion exchange strategy. By cleverly combining iron-based MOFs (MIL-88A, sacrifice template) nanorods, layered dihydroxides (LDH) nanosheets, and Prussian blue (PB) nancubes to form rich heterojunction and bimetallic phosphide catalysts, and by tuning the reaction kinetics and electron transfer capacities to enrich the active sites, ultimately promoting the intrinsic activity of the catalyst towards OER. Simultaneously, the co-doping of nitrogen and phosphorus in the heterostructure helped to adjust the electronic structure of the heterogeneous catalyst and the conductivity of the matrix, promoting the adsorption and desorption of OER intermediates on the catalyst surface. This work provides a new strategy for designing efficient and stable bimetallic phosphide electrocatalysts.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 913-920"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571699","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}
Mohammad Hosein Rezazadeh , Yalda Ramezani , Fereshteh Meshkani
{"title":"Enhancement of magnesium aluminate-based nickel and cobalt nanostructured catalysts with iron for improved performance in carbon dioxide methanation","authors":"Mohammad Hosein Rezazadeh , Yalda Ramezani , Fereshteh Meshkani","doi":"10.1016/j.pnsc.2024.09.003","DOIUrl":"10.1016/j.pnsc.2024.09.003","url":null,"abstract":"<div><div>This study investigates the performance of Ni and Co catalysts based on Fe-promoted MgAl<sub>2</sub>O<sub>4</sub> for CO<sub>2</sub> methanation, which is a crucial step in mitigating environmental carbon dioxide levels. The MgAl<sub>2</sub>O<sub>4</sub> support was modified with various Fe loading (5, 10, and 15 wt%) and fabricated via a novel coprecipitation technique with the help of ultrasonic waves and chosen as support for 15 wt% Ni and Co active phases. Examination of the BET surface properties of the catalysts showed an increase in surface area in the range of 54–82 m<sup>2</sup>/g and 73–85 m<sup>2</sup>/g with an increasing Fe loading for Ni and Co catalysts, respectively. Among the Ni-based catalysts, the 15Ni/10FeMgAl<sub>2</sub>O<sub>4</sub> specimen exhibited the best performance (with a 73.31 % CO<sub>2</sub> conversion and 95.61 % selectivity rate) and remarkable lifetime during 10 h at 400 °C due to the better reducibility and the increase in hydrogen consumption. However, a rise in Fe amount to 15 wt% led to a reduction in the CO<sub>2</sub> conversion to 34.43 %. The catalytic outcomes also demonstrated that the presence of Fe in Co/MgAl<sub>2</sub>O<sub>4</sub> catalysts negatively affects catalytic performance. The unpromoted Co/MgAl<sub>2</sub>O<sub>4</sub> sample demonstrated the best performance, achieving a conversion rate of 52.41 % at 350 °C.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 921-932"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571700","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}
Jia Yang Zhang , Feng Li , Fu Wei Kang , Zi Yi Wang , Lu Sun
{"title":"Double effects of recrystallization behavior on grain morphology evolution and mechanical properties of Al/Mg/Al composite plate by hard plate rolling","authors":"Jia Yang Zhang , Feng Li , Fu Wei Kang , Zi Yi Wang , Lu Sun","doi":"10.1016/j.pnsc.2024.07.019","DOIUrl":"10.1016/j.pnsc.2024.07.019","url":null,"abstract":"<div><div>Enhancing the bonding strength, optimizing the microstructure and refining the properties represent effective strategies for the fabrication of heterogeneous composite plates. In this study, composite plates of Al/Mg/Al were fabricated through hard plate rolling (HPR) with a reduction in rolling ranging from 40 % to 80 %. The research primarily concentrates on the substrate in the influence of rolling dynamic recrystallization (DRX) behavior on the grain morphology evolution and mechanical properties of AZ31 magnesium alloy sheets during the process. The findings indicate that at a compression amount of 60 %, the composite plate exhibits an ultimate tensile strength (UTS), a maximum elongation (EL) of 12.5 %, and improved interface bonding. Comparative analysis reveals the occurrence of DRX on the Mg side, resulting in the formation of small DRXed grains being generated. With an increase in reduction, DRX is facilitated, leading to an initial rise and subsequent decline in the proportion of DRXed grains. The proliferation of fine grains hinder dislocation movement, thereby reinforcing composite plate. Moreover, an elevation in the degree of recrystallization enhances the initiation of non-basal slip and enhances the plasticity of sheet metal. This study offers valuable scientific guidance and technical assistance for the production of forming high-quality Mg–Al composite plates.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1029-1038"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571194","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}
{"title":"Optimization of porous structures via machine learning for solar thermochemical fuel production","authors":"Da Xu , Lei Zhao , Meng Lin","doi":"10.1016/j.pnsc.2024.07.024","DOIUrl":"10.1016/j.pnsc.2024.07.024","url":null,"abstract":"<div><div>Porous reactant is the key component in solar thermochemical reactions, significantly affecting the solar energy conversion and fuel production performance. Triply periodic minimal surface (TPMS) structures, with analytical expressions and predictable structure-property relationships, can facilitate the design and optimization of such structures. This work proposes a machine learning-assisted framework to optimize TPMS structures for enhanced reaction efficiency, increased fuel production, and reduced temperature gradients. To mitigate the computational cost of conventional high-throughput optimization, neural network regression models were used to for performance prediction based on input features. The training dataset was generated using a three-dimensional multiphysics model for the thermochemical reduction driven by concentrated solar energy considering fluid flow, heat and mass transfer, and chemical reacions. Both uniform and gradient structures were initially assessed by the three-dimensional model showing gradient design in <em>c</em> and <em>ω</em> were necessary for performance enhancement. Further, with our proposed optimization framework, we found that structures with parameters <em>c</em><sub>1</sub> = <em>c</em><sub>2</sub> = 0.5 (uniform in <em>c</em> ) and <em>ω</em><sub>1</sub> = 0.2, <em>ω</em><sub>2</sub> = 0.8 (gradient in <em>ω</em>) achieved the highest relative efficiency (<em>f</em><sub>chem</sub><em>/f</em><sub>chem,ref</sub>) of 1.58, a relative fuel production (Δ<em>δ</em>/Δ<em>δ</em><sub>ref</sub>) of 7.94, and a max relative temperature gradient (<em>dT/dy)/</em>(<em>dT/dy</em>)<sub>ref</sub> of 0.26. Kinetic properties, i.e., bulk diffusion and surface exchange coefficient, were also studied showing that for materilas with slow kinetics, the design space in terms of <em>c</em> and <em>ω</em> were highly limited compared to fast kinetics materials. Our framework is adaptable to diverse porous structures and operational conditions, making it a versatile tool for screening porous structures for solar thermochemical applications. This work has the potential to advance the development of efficient solar fuel production systems and scalable industrial applications in renewable energy technologies.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 895-906"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571697","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}
{"title":"Enhanced air-poisoning resistance in vanadium-based hydrogen storage alloy by addition of Si","authors":"","doi":"10.1016/j.pnsc.2024.05.010","DOIUrl":"10.1016/j.pnsc.2024.05.010","url":null,"abstract":"<div><p><span>Surface poisoning typically leads to the severe capacity degradation and poses a significant challenge to the durability of hydrogen storage materials. In this study, we report a novel approach to enhance the air-poisoning resistance of vanadium-based alloys by introducing of the air-tolerant hydride. Through the addition of 1 at% Si, a small amount of Ti</span><sub>5</sub>Si<sub>3</sub> is induced in V<sub>75</sub>Ti<sub>11</sub>Cr<sub>13</sub>Fe<sub>1</sub>, which turns into Ti<sub>5</sub>Si<sub>3</sub>H<sub>0.9</sub><span> during the hydrogen sorption cycles. Ti</span><sub>5</sub>Si<sub>3</sub>H<sub>0.9</sub> shows high resistance against air, which could serve as the hydrogen-entry window for the bulk. As a result, the (V<sub>75</sub>Ti<sub>11</sub>Cr<sub>13</sub>Fe<sub>1</sub>)<sub>99</sub>Si<sub>1</sub><span> alloy maintains approximately 85 % of the hydrogen storage capacity after 10 cycles in H</span><sub>2</sub><span> + 250 ppm air, in contrast to the near-complete loss of hydrogen sorption activity in Si-free alloy under the same condition.</span></p></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 4","pages":"Pages 648-653"},"PeriodicalIF":4.8,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141393299","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}