Materials Letters最新文献_第8页

Exploring popped-out phenomena in large-scale silicon ingot growth 探索大规模硅锭生长过程中的爆裂现象

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-05 DOI: 10.1016/j.matlet.2024.137666

Zary Adabavazeh

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Synthesis and characterization of the RE2A2O7 oxides with an ultrahigh-entropy sublattice occupied by rare-earth elements 具有被稀土元素占据的超高熵子晶格的 RE2A2O7 氧化物的合成与表征

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-05 DOI: 10.1016/j.matlet.2024.137668

Evgeny Trofimov , Ahmad Ostovari Moghaddam , Ksenia Litvinyuk , Mariappan Anandkumar , Milena Efimova , Dmitry Mikhailov , Olga Zaitseva

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NiMo/NiFe-LDH heterostructured electrocatalyst for hydrogen production from water electrolysis 用于电解水制氢的 NiMo/NiFe-LDH 异质结构电催化剂

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137664

Cong Hong , Jihao Ji , Jingguang Huang , Yuanning Zhang , Liangkai Li

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Strategies for designing high-performance hard carbon anodes with enhanced lithium-ion diffusion and rate capability 设计具有更强锂离子扩散和速率能力的高性能硬碳阳极的策略

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137663

Fuliang Liu , Xiaoshuang Luo , Xiong Zhou , Yin Shen , Junchen Chen , Xing Li , Xiaogang Zhang

{"title":"Strategies for designing high-performance hard carbon anodes with enhanced lithium-ion diffusion and rate capability","authors":"Fuliang Liu , Xiaoshuang Luo , Xiong Zhou , Yin Shen , Junchen Chen , Xing Li , Xiaogang Zhang","doi":"10.1016/j.matlet.2024.137663","DOIUrl":"10.1016/j.matlet.2024.137663","url":null,"abstract":"<div><div>The performance of the electrodes is closely related to the structure of the electrode sheet, and the construction of advanced electrodes is crucial for the lithium-ion diffusion process in high-performance lithium-ion batteries (LIBs). Hard carbon, with its irregular polycrystalline microstructure, is an ideal candidate material for the anode electrode of LIBs. However, its have some drawbacks such as low initial coulombic efficiency (ICE), low capacity and poor rate performance. In this work, two electrode casting approaches are proposed and tested in pouch cells, which are double-layer blade coated electrode and patterned coated electrode. The results show that both coating methods show a combination of high ICE and rate capability, exceeding the performance of conventional single-coated electrodes composed of the same material. The designed coating method improves the dynamics of lithium ion diffusion process in the electrode, and the magnification performance and comprehensive electrochemical performance are improved. The research has a wide application prospect and can provide design guidance for obtaining high-power batteries.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137663"},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

3D printing of soft magnetoactive superhydrophobic elastomers for droplet manipulation 用于液滴操控的软磁活性超疏水弹性体的三维打印技术

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137658

Xinying Li, Tianqi Pang, Ziyue Huang, Jianping Wang, Fang Huang, Liang Zhang

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Enhanced photocatalytic properties of TiO2/rGO nanocomposites Doped with CdS 增强掺杂 CdS 的 TiO2/rGO 纳米复合材料的光催化性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137660

Evgeniya Seliverstova , Timur Serikov , Aigul Sadykova , Niyazbek Ibrayev , Nurxat Nuraje

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Synthesis and characterization of CeO2 nanoparticles using Plectranthus barbatus leaf extract and its CO gas sensing and antimicrobial activity 利用鱼腥草叶提取物合成和表征 CeO2 纳米粒子及其 CO 气体传感和抗菌活性

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137652

Huda Imran Ahemad , Ganesh Eknath Patil , Yogesh Bhaskar Aher , Momin Shoaib Malik , Laxmi Dilip Sonawane , Manoj Annasaheb More , Abhinay Subhash Mandawade , Dnyaneshwari Yuvraj Patil , Sarika Digambar Shinde , Gotan Hiralal Jain

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Superior gel polymer electrolyte for sodium metal battery with long-term cycling stability at elevated current density 用于钠金属电池的优质凝胶聚合物电解质，在高电流密度下具有长期循环稳定性

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137654

Zhichuan Shen , Junli Zhu , Junqiao Huang , Keying Cao , Naiguang Wang , Zhicong Shi

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Modified organic-template synthesis of Co3O4 as high-performance electrode with superior capacitive storage 改性有机模板合成 Co3O4 作为高性能电极，具有卓越的电容存储能力

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137656

Jing He, Hongye Xuan, Renwei Jing, Chao Yan, Minjie Shi

{"title":"Modified organic-template synthesis of Co3O4 as high-performance electrode with superior capacitive storage","authors":"Jing He, Hongye Xuan, Renwei Jing, Chao Yan, Minjie Shi","doi":"10.1016/j.matlet.2024.137656","DOIUrl":"10.1016/j.matlet.2024.137656","url":null,"abstract":"<div><div>Electrochemical supercapacitors (ESCs) have great potential in many energy storage technologies because of their outstanding performance. Transition metal oxides with high theoretical specific capacity are promising for ESC electrodes, but their low utilization of capacitive active components and poor cycle stability limit their practical usage. Herein, we have prepared a novel cobalt metal cyanometallic framework (Co-CMF) and further thermally modified it to easily produce a Co<sub>3</sub>O<sub>4</sub> positive electrode with excellent capacitive storage performance. As a result, the electrode exhibits fast, stable and reversible electrochemical performance with a high specific capacity of 241.9 C g<sup>−1</sup> and long-term stability with as low as 0.004 % decline per cycle in the 5 M KOH aqueous electrolyte, which are confirmed by in-situ Raman investigation and electrochemical tests, further demonstrating that this modified approach provides a new idea for the development of promising high-capacity electrode materials for large-scale energy storage.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137656"},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Unveiling the synergistic mechanism of Co-Cu catalysts for efficient oxygen evolution reactions 揭示 Co-Cu 催化剂在高效氧气进化反应中的协同作用机制

IF 2.7 4区材料科学

Materials Letters Pub Date : 2024-11-04 DOI: 10.1016/j.matlet.2024.137659

Zeliang Ju , Xiujuan Tan , Xuyun Zhang , Yong Wang , Chengfeng Yin , Qingxin Kang

{"title":"Unveiling the synergistic mechanism of Co-Cu catalysts for efficient oxygen evolution reactions","authors":"Zeliang Ju , Xiujuan Tan , Xuyun Zhang , Yong Wang , Chengfeng Yin , Qingxin Kang","doi":"10.1016/j.matlet.2024.137659","DOIUrl":"10.1016/j.matlet.2024.137659","url":null,"abstract":"<div><div>The development of highly active electrocatalysts for Oxygen Evolution Reactions (OER) is critical in the field of energy conversion and storage. Among potential candidates, diatomic catalysts have demonstrated the potential to outperform monoatomic counterparts, though comprehensive studies on their reaction mechanisms remain limited. In this study, a Co-Cu diatomic catalyst was computationally designed using density functional theory (DFT), and four reaction pathways involving multiple intermediates (*O, *OH, *OOH, *2OH, *O + *OH) were calculated. The results indicate that the Co-Cu diatomic catalyst exhibits superior catalytic performance on pathway II (H<sub>2</sub>O → *OH → *2OH → *OOH → O<sub>2</sub>) with an overpotential of 0.27 V, overcoming the limitations imposed by the active site of conventional anion exchange membrane (AEM) catalysts. The high catalytic activity is attributed to the synergistic interaction between the metal atoms, bypassing the high-energy barrier step typically observed in conventional pathways. In this mechanism, the Cu d-band center is close to the Fermi energy level, enhancing electron transfer, while Co provides a stable adsorption site and effectively regulates the adsorption and conversion of reaction intermediates. These findings offer new strategies for the rational synthesis of bimetallic catalysts.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137659"},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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