Materials Today最新文献_第3页

Selective nitrogen reduction reaction on single-atom centers of molybdenum-based MXenes by pulsing the electrochemical potential 利用脉冲电化学电位研究钼基MXenes单原子中心的选择性氮还原反应

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-04-03 DOI: 10.1016/j.mattod.2025.03.016

Diwakar Singh , Samad Razzaq , Shohreh Faridi , Kai S. Exner

{"title":"Selective nitrogen reduction reaction on single-atom centers of molybdenum-based MXenes by pulsing the electrochemical potential","authors":"Diwakar Singh , Samad Razzaq , Shohreh Faridi , Kai S. Exner","doi":"10.1016/j.mattod.2025.03.016","DOIUrl":"10.1016/j.mattod.2025.03.016","url":null,"abstract":"<div><div>Electrocatalytic reduction of dinitrogen is a promising route for sustainable production of ammonia, although the selectivity challenge of the competing nitrogen reduction (NRR) and hydrogen evolution reactions in aqueous electrolytes has not yet been solved. Single-atom catalysts (SACs) offer the hope of bridging this gap because they exhibit unique electronic structure and reactivity in catalytic transformations compared to conventional bulk materials. In addition, potential pulse experiments have shown that they promote the formation of kinetically unfavorable products by efficiently modulating the electrolyte structure at the solid–liquid interface. So far, a combination of SACs and potential pulse experiments for the NRR is mutually exclusive, since SACs are likely to be degraded during the anodic potential pulse due to metal dissolution. Using density functional theory calculations in a grand canonical framework, we demonstrate in the present communication that molybdenum-based MXenes are able to overcome this limitation: compared to traditional SACs, MXenes form single-atom centers during the anodic potential pulse, and their SAC-like structure allows the selectivity to be directed to ammonia instead of gaseous hydrogen during the cathodic pulse. Our study paves the way for the development of high-performance materials with <em>in-situ</em> formed SAC-like sites to enable advances in selective catalytic transformations under applied bias.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 575-579"},"PeriodicalIF":21.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Intraparticle alloying-plating reaction for high-performing lithium metal batteries with low volume expansion 高性能低体积膨胀锂金属电池的颗粒内镀合金反应

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-28 DOI: 10.1016/j.mattod.2025.03.012

Zidong Chen , Yiteng Luo , Dongsheng Yang , Yuhang Hu , Haorui Hou , Nikhil Koratkar , Guangmin Zhou , Wei Liu

{"title":"Intraparticle alloying-plating reaction for high-performing lithium metal batteries with low volume expansion","authors":"Zidong Chen , Yiteng Luo , Dongsheng Yang , Yuhang Hu , Haorui Hou , Nikhil Koratkar , Guangmin Zhou , Wei Liu","doi":"10.1016/j.mattod.2025.03.012","DOIUrl":"10.1016/j.mattod.2025.03.012","url":null,"abstract":"<div><div>Lithium metal anode is a key enabler for high-energy lithium-ion batteries, however solutions to achieve lithium metal anodes with stable charge–discharge cycling and low volume expansion have been lacking. Here, an intraparticle lithium-alloying-plating reaction offering high reversibility and low volume expansion is reported. A unique particle architecture, comprising a porous lithiophilic silicon core with a dual conductive seal, was constructed to concurrently achieve high porosity and low particle surface area. This hierarchically structured microparticle achieved intraparticle Li-storage with ultrahigh capacity (∼4,292 mAh/g<sub>Si</sub>), greatly reduced electrode swelling and improved cycle life. Half-cells operating at ∼1 mA cm<sup>−2</sup> and ∼3mAh cm<sup>−2</sup> achieved coulombic efficiency > 99.3 % after 250 cycles in carbonate electrolyte, with the post-cycled electrodes showing well-preserved porosity and shielded-off electrolyte penetration. By contrast, porous silicon particles without the protective seal, experienced drastic side reactions and pulverization, with the electrodes experiencing severe swelling and capacity decay. Full pouch cells with LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (NCM811, ∼20.3 mg cm<sup>−2</sup>) retained ∼77.9 % capacity after 100 cycles, where the sealed porous silicon experienced minor expansion (∼12 %), much lower than a ∼20 μm lithium-metal anode (∼70 %). Furthermore, Z-stack full pouch cells adopting double-sided sealed porous microparticle anodes delivered a capacity retention of ∼95.7 % over 50 cycles.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 74-86"},"PeriodicalIF":21.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Fe single atom trigger asymmetric In-In polarized site pairs boosting near-infrared N2 photoreduction 铁单原子触发不对称In-In极化位对，促进近红外N2光还原

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-28 DOI: 10.1016/j.mattod.2025.03.014

Huimin Liang , Caichao Ye , Yao Wu , Yezi Li , Ran Long , Jun Xiong , Wei Jiang , Jun Di

{"title":"Fe single atom trigger asymmetric In-In polarized site pairs boosting near-infrared N2 photoreduction","authors":"Huimin Liang , Caichao Ye , Yao Wu , Yezi Li , Ran Long , Jun Xiong , Wei Jiang , Jun Di","doi":"10.1016/j.mattod.2025.03.014","DOIUrl":"10.1016/j.mattod.2025.03.014","url":null,"abstract":"<div><div>Building differentiated charge distributed polarized atomic pairs may be an alternative for N<sub>2</sub> activation. In this work, CuInS<sub>2</sub> atomic layers with asymmetric In-In polarized site pairs are prepared by doping Fe single atoms, as proved by X-ray absorption fine structure spectroscopy, quasi in situ X-ray photoelectron spectra and calculated atomic charge distribution. The engineered Fe single atoms tuned the surface atomic charge distribution, building local polarization center to boost directional surface charge separation. The formed In-In polarized site pairs with asymmetric charge distribution creates distinct interaction with two N atoms in N<sub>2</sub> molecule, contributing to the enhanced activation of N<sub>2</sub>. The alternating pathway is regarded as hydrogenation pathway over Fe-CuInS<sub>2</sub> with *NNH formation as rate-determining step. The charge-redistributed surface atomic structure after engineered Fe single atoms strengthens intermediate interaction and lower the rate-determining step energy barrier. Benefiting from these features, Fe-CuInS<sub>2</sub> exhibits excellent photocatalytic activity under near-infrared (NIR) irradiation with an ammonia synthesis rate of 94.1 μmol g<sup>−1</sup> h<sup>−1</sup>. In comparison, the N<sub>2</sub>-NH<sub>3</sub> conversion rate of Fe-CuInS<sub>2</sub> under ultraviolet–visible (UV–Vis) irradiation could reach 137.4 μmol g<sup>−1</sup> h<sup>−1</sup>, which is about 6.8 times higher than that of CuInS<sub>2</sub>. The apparent quantum efficiencies of Fe-CuInS<sub>2</sub>-2 at 380, 400, 450, 500, 550, 650, 700, 800, 850 and 1064 nm were 3.0 %, 3.3 %, 2.7 %, 2.1 %, 2.0 %, 1.5 %, 1.3 %, 0.4 %, 0.7 % and 0.6 %, respectively.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 96-103"},"PeriodicalIF":21.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Charge reconfiguration for breaking the V4+/V5+ redox barrier in sodium-based NASICON cathode with higher energy density 高能量密度钠基NASICON阴极中打破V4+/V5+氧化还原势垒的电荷重构

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-28 DOI: 10.1016/j.mattod.2025.03.013

Xin-Ru Zhang , Zhen-Yi Gu , Xiao-Tong Wang , Ze-Lin Hao , Xin-Xin Zhao , Shuo-Hang Zheng , Jie Li , Hong-Jie Zhong , Xing-Long Wu

{"title":"Charge reconfiguration for breaking the V4+/V5+ redox barrier in sodium-based NASICON cathode with higher energy density","authors":"Xin-Ru Zhang , Zhen-Yi Gu , Xiao-Tong Wang , Ze-Lin Hao , Xin-Xin Zhao , Shuo-Hang Zheng , Jie Li , Hong-Jie Zhong , Xing-Long Wu","doi":"10.1016/j.mattod.2025.03.013","DOIUrl":"10.1016/j.mattod.2025.03.013","url":null,"abstract":"<div><div>Na<sub>4</sub>FeV(PO<sub>4</sub>)<sub>3</sub> (NFV) is a Na-super-ionic conductor (NASICON)-structured cathode material for sodium-ion batteries (SIBs). Nonetheless, how to stabilize the V<sup>4+</sup>/V<sup>5+</sup> redox reaction in the high-voltage region and enhance the carrier transport rate are the biggest challenges at present. In this paper, an innovative charge reconfiguration engineering is pro-posed to optimize the charge transfer of the V-O bonds and enhance the carrier transport rate by introducing electron-rich Ti at the Fe site. In this way, the barrier of V<sup>4+</sup>/V<sup>5+</sup> redox is broken, which enables the activation and stability of V<sup>4+</sup>/V<sup>5+</sup> redox in the high-voltage region to be achieved simultaneously. Furthermore, the significantly lengthened V<sup>4+</sup>/V<sup>5+</sup> redox plateau in the high-voltage region contributes superior capacity, leading to a remarkably increased energy density (up to 1.6 times that of the NFV). The proposed charge reconfiguration engineering will create a new avenue for fabricating high-performance cathode materials for SIBs.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 87-95"},"PeriodicalIF":21.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Thermally conductive and electrically insulative alumina/epoxy composites for advanced electronic packaging applications: A comprehensive review of filler morphologies and surface modifications 用于先进电子封装应用的导热和电绝缘氧化铝/环氧复合材料：填料形态和表面改性的全面回顾

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-27 DOI: 10.1016/j.mattod.2025.03.011

Zihao Lin , Zhijian Sun , Wenbin Fu , Yu-Chieh Lin , Kyoung-sik Moon , C.P. Wong

{"title":"Thermally conductive and electrically insulative alumina/epoxy composites for advanced electronic packaging applications: A comprehensive review of filler morphologies and surface modifications","authors":"Zihao Lin , Zhijian Sun , Wenbin Fu , Yu-Chieh Lin , Kyoung-sik Moon , C.P. Wong","doi":"10.1016/j.mattod.2025.03.011","DOIUrl":"10.1016/j.mattod.2025.03.011","url":null,"abstract":"<div><div>With the rapid advancement of modern electronics, circuits are becoming more integrated and denser, supporting Moore’s Law. High density and high-power integrated circuits (ICs) generate a large amount of heat that needs to be neutralized. In dealing with this thermal management issue, many approaches in semiconductor packaging have arisen. One of the most effective methods to resolve high heat generation involves synthesizing epoxy-based composites with high thermal conductivity fillers. In this review, alumina fillers are examined for their high thermal conductivity (∼30 W/(m·K)), as well as for their additional benefit of electrical insulation. Various types of alumina fillers exist and are examined in this study. They range from zero-dimensional nano- and micro-particles to three-dimensional hybrid fillers. Thermal and electrical mechanical properties are discussed and compared among the different alumina fillers. Filler preparation in the composite and its effects on thermal performance are also reviewed. Finally, a summarizing outlook is discussed regarding potential challenges and future applications of alumina epoxy composites in advanced packaging.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 393-413"},"PeriodicalIF":21.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Emerging microfluidics for bioreactor 新兴的生物反应器微流体

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-25 DOI: 10.1016/j.mattod.2025.03.009

Hanxu Chen , Yile Fang , Zhiqiang Luo , Yu Wang , Weijian Sun , Yuanjin Zhao

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A novel NASICON-Na3.4MnV0.2Cr0.2Ti0.6(PO4)3 cathode with ultrahigh energy density and remarkable cycling stability toward practical Na-ion batteries 一种具有超高能量密度和卓越循环稳定性的新型NASICON-Na3.4MnV0.2Cr0.2Ti0.6(PO4)3阴极，用于实用钠离子电池

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-22 DOI: 10.1016/j.mattod.2025.03.010

Dashan Fan , Yao Wang , Xudong Zhao , Junteng Jin , Qiuyu Shen , Zhenyou Li , Xuanhui Qu , Lifang Jiao , Yongchang Liu , Zaiping Guo

{"title":"A novel NASICON-Na3.4MnV0.2Cr0.2Ti0.6(PO4)3 cathode with ultrahigh energy density and remarkable cycling stability toward practical Na-ion batteries","authors":"Dashan Fan , Yao Wang , Xudong Zhao , Junteng Jin , Qiuyu Shen , Zhenyou Li , Xuanhui Qu , Lifang Jiao , Yongchang Liu , Zaiping Guo","doi":"10.1016/j.mattod.2025.03.010","DOIUrl":"10.1016/j.mattod.2025.03.010","url":null,"abstract":"<div><div>The pursuit of an advanced cathode material featuring high energy density and long lifespan is of great significance to promote the practical applications of sodium-ion batteries (SIBs). Herein, a novel Na superionic conductor (NASICON)-type Na<sub>3.4</sub>MnV<sub>0.2</sub>Cr<sub>0.2</sub>Ti<sub>0.6</sub>(PO<sub>4</sub>)<sub>3</sub>/C (NMVCTP/C) cathode is developed, the active Ti<sup>3+</sup>/Ti<sup>4+</sup>, V<sup>3+</sup>/V<sup>4+</sup>/V<sup>5+</sup>, Mn<sup>2+</sup>/Mn<sup>3+</sup>/Mn<sup>4+</sup>, and Cr<sup>3+</sup>/Cr<sup>4+</sup> redox couples endow the cathode with an extraordinary discharge capacity of 176.7 mAh g<sup>−1</sup> (3.1-electron transfer) and a high output voltage of 3.47 V, harvesting a record-high practical energy density of 613.15 Wh kg<sup>−1</sup> for the polyanionic cathodes for SIBs. The reversible bi-phase and solid-solution reaction with a small volume change of 5.5 % during the multi-electron charge/discharge process is systematically expounded by in-situ X-ray diffraction, ex-situ X-ray absorption spectroscopy and <sup>23</sup>Na nuclear magnetic resonance analyses. Besides, theoretical computations elucidate that Cr doping could enhance the V<sup>4+</sup>/V<sup>5+</sup> reaction reversibility by suppressing the V migration to Na site. Consequently, the NMVCTP/C cathode affords an admirable cycling stability of 92.4 % capacity retention after 2000 cycles. More excitingly, a 3.75 Ah pouch cell is successfully constructed employing the NMVCTP/C cathode and hard carbon anode, demonstrating considerable application prospects. This study upgrades the energy density of polyanion-type Na-storage cathodes to a new level by rationally modulating redox couples.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 63-73"},"PeriodicalIF":21.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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X-ray computed laminography: A brief review of mechanisms, reconstruction, applications and perspectives x射线计算机层析成像：简要回顾其机制、重建、应用和前景

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-20 DOI: 10.1016/j.mattod.2025.02.023

Wenjia Du , Francesco Iacoviello , Mateen Mirza , Shangwei Zhou , Junfu Bu , Shikang Feng , Patrick S. Grant , Rhodri Jervis , Dan J.L. Brett , Paul R. Shearing

{"title":"X-ray computed laminography: A brief review of mechanisms, reconstruction, applications and perspectives","authors":"Wenjia Du , Francesco Iacoviello , Mateen Mirza , Shangwei Zhou , Junfu Bu , Shikang Feng , Patrick S. Grant , Rhodri Jervis , Dan J.L. Brett , Paul R. Shearing","doi":"10.1016/j.mattod.2025.02.023","DOIUrl":"10.1016/j.mattod.2025.02.023","url":null,"abstract":"<div><div>X-ray computed tomography (CT) has the capacity to reveal the internal details of objects in three-dimensions, non-destructively. Since the 1980s, X-ray CT has been accepted as a well-established tool for a wide range of scientific and engineering research endeavours. The sample is rotated about an axis perpendicular to the incident X-ray beam during CT acquisition. The spatial resolution of CT scans may be compromised for large, flat (high-aspect-ratio) samples due to constraints imposed by the geometrical setting. The recent development of X-ray computed laminography (CL) offers a great opportunity to overcome several limitations by using an angled axis of rotation, which could complement CT characterisation. Like X-ray CT, CL is also capable of acquiring 3D image datasets for the extraction of volumetric parameters, such as phase fractions and damage levels. Herein, we review the research on X-ray CL over the past three decades and the current state of the field, including its advantages and disadvantages, characteristics, methods and setup, data reconstruction and computational software, and applications. Finally, the outlook for future research opportunities and challenges is briefly discussed. The preliminary attempts to implement CL for electrochemical devices are presented with a focus on research pertaining to pilot-scale solid-state pouch batteries.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 267-281"},"PeriodicalIF":21.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Photon upconversion in metal halide perovskites 金属卤化物钙钛矿中的光子上转换

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-19 DOI: 10.1016/j.mattod.2025.03.008

Junlin Lu , Zhixing Gan , Joel van Embden , Baohua Jia , Xiaoming Wen

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Next-generation health monitoring: The role of nanomaterials in 3D-printed wearable devices 下一代健康监测：纳米材料在3d打印可穿戴设备中的作用

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-03-19 DOI: 10.1016/j.mattod.2025.03.005

Chuchu Chen , Yonghao Fu , Yun Liu , Prashanta Dutta , Yuehe Lin , Dan Du , Kaiyan Qiu

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