Electron最新文献_第3页

MOF-derived Co/C-anchored MoS2-based phase change materials toward thermal management and microwave absorption 基于 MOF 衍生 Co/C-anchored MoS2 的相变材料，用于热管理和微波吸收

Electron Pub Date : 2024-07-03 DOI: 10.1002/elt2.56

Yang Li, Xukang Han, Jiaying Zhu, Yuhao Feng, Panpan Liu, Xiao Chen

{"title":"MOF-derived Co/C-anchored MoS2-based phase change materials toward thermal management and microwave absorption","authors":"Yang Li, Xukang Han, Jiaying Zhu, Yuhao Feng, Panpan Liu, Xiao Chen","doi":"10.1002/elt2.56","DOIUrl":"10.1002/elt2.56","url":null,"abstract":"With the miniaturization and integration of electronic devices, developing advanced multifunctional phase change materials (PCMs) integrating thermal storage, thermal conduction, and microwave absorption to address electromagnetic interference, thermal dissipation, and instantaneous thermal shock is imperative. Herein, we proposed an extensible strategy to synthesize MOF-derived Co/C-anchored MoS2-based PCMs using high-temperature carbonation of flower-like MoS2 grown in situ by ZIF67 and vacuum impregnation of paraffin. The resulting MoS2@Co/C-paraffin composite PCMs exhibited good thermal storage density, thermal cycling stability, and long-term durability. The thermal conductivity of composite PCMs was 44% higher than that of pristine paraffin due to the construction of low interfacial thermal resistance. More attractively, our designed composite PCMs also possessed −57.15 dB minimum reflection loss at 9.2 GHz with a thickness of 3.0 mm, corresponding to an effective absorption bandwidth of 3.86 GHz. The excellent microwave absorption was attributed to the multicomponent synergy of magnetic loss from Co nanoparticles and conductive loss from MOF-derived carbon layers, and multiple reflection of MoS2 nanowrinkle, along with good impedance matching. This study provided a meaningful reference for the widespread application of composite PCMs combining thermal storage, thermal conduction, and microwave absorption in high-power miniaturized electronic devices.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.56","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141680343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional diamond-based catalysts: Promising candidates for energy conversions in extreme environments—A mini-review 多功能金刚石催化剂：在极端环境中进行能量转换的理想候选者--微型综述

Electron Pub Date : 2024-07-01 DOI: 10.1002/elt2.45

Ziwei Zhao, Xiaowu Gao, Hansong Zhang, Keran Jiao, Pengfei Song, Yumin Zhang, Yongjie Wang, Jiaqi Zhu

{"title":"Multifunctional diamond-based catalysts: Promising candidates for energy conversions in extreme environments—A mini-review","authors":"Ziwei Zhao, Xiaowu Gao, Hansong Zhang, Keran Jiao, Pengfei Song, Yumin Zhang, Yongjie Wang, Jiaqi Zhu","doi":"10.1002/elt2.45","DOIUrl":"10.1002/elt2.45","url":null,"abstract":"In order to properly utilize the abundant CO2 and water resources, various catalytic materials have been developed to convert them into valuable chemicals as renewable fuels electrochemically or photochemically. Currently, most studies are conducted under mild laboratory conditions, but for some extreme environments, such as Mars and space stations, there is an urgent need to develop new catalysts satisfying such special requirements. Conventional catalytic materials mainly focus on metals and narrow bandgap semiconductor materials, while the research on wide and ultrawide bandgap materials that can inherently withstand extreme conditions has not received enough attention. Given the robust stability and excellent physico-chemical properties of diamond, it can be expected to perform in harsh environments for electrocatalysis or photocatalysis that has not been investigated thoroughly. Here, this review summarizes the catalytic functionality of diamond-based electrodes with various but tunable product selectivity to obtain the varied C1 or C2+ products, and discusses some important factors playing a key role in manipulating the catalytic activity. Moreover, the unique solvation electron effect of diamond gives it a significant advantage in photocatalytic conversions which is also summarized in this mini-review. In the end, prospects are made for the application of diamond-based catalysts under various extreme conditions. The challenges that may be faced in practical applications are also summarized and future breakthrough directions are proposed at the end.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.45","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141691825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Directing the photogenerated charge flow in a photocathodic metal protection system with single-domain ferroelectric PbTiO3 nanoplates 利用单域铁电 PbTiO3 纳米板引导光阴极金属保护系统中的光生电荷流

Electron Pub Date : 2024-06-26 DOI: 10.1002/elt2.51

Hui Xie, Jianyou Yu, Yuchen Fang, Zhijun Wang, Shihe Yang, Zheng Xing

{"title":"Directing the photogenerated charge flow in a photocathodic metal protection system with single-domain ferroelectric PbTiO3 nanoplates","authors":"Hui Xie, Jianyou Yu, Yuchen Fang, Zhijun Wang, Shihe Yang, Zheng Xing","doi":"10.1002/elt2.51","DOIUrl":"https://doi.org/10.1002/elt2.51","url":null,"abstract":"Photocathodic protection (PCP) is arguably an ideal alternative technology to the conventional electrochemical cathodic protection methods for corrosion mitigation of metallic infrastructure due to its eco-friendliness and low-energy-consumption, but the construction of highly-efficient PCP systems still remains challenging, caused primarily by the lack of driving force to guide the charge flow through the whole PCP photoanodes. Here, we tackle this key issue by equipping the PCP photoanode with ferroelectric single-domain PbTiO3 nanoplates, which can form a directional “macroscopic electric field” throughout the entire photoanode controllable by external polarization. The properly poled PCP photoanode allows the photogenerated electrons and holes to migrate in opposite directions, that is, electrons to the protected metal and holes to the photoanode/electrolyte interface, leading to largely suppressed charge annihilation and consequently a considerable boost in the overall solar energy conversion efficiency of the PCP system. The as-fabricated photoanode can not only supply sufficient photocurrent to 304 stainless steel to initiate cathodic protection, but also shift the metal potential to the corrosion-free range. Our findings provide a viable design strategy for future high-performance PCP systems based on ferroelectric nanomaterials with enhanced charge flow manipulation.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.51","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142100059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual function of formamidinium chloride additive improves the efficiency and stability of low-dimensional perovskite solar cells 甲脒氯化物添加剂的双重功能提高了低维过氧化物太阳能电池的效率和稳定性

Electron Pub Date : 2024-06-16 DOI: 10.1002/elt2.52

Lvpeng Yang, Tong Bie, Peiyu Ma, Jin Xin, Tho D. Nguyen, Ming Shao

{"title":"Dual function of formamidinium chloride additive improves the efficiency and stability of low-dimensional perovskite solar cells","authors":"Lvpeng Yang, Tong Bie, Peiyu Ma, Jin Xin, Tho D. Nguyen, Ming Shao","doi":"10.1002/elt2.52","DOIUrl":"https://doi.org/10.1002/elt2.52","url":null,"abstract":"Despite their excellent intrinsic stability, low-dimensional Ruddlesden-Popper (LDRP) perovskites face challenges with low power conversion efficiency (PCE), primarily due to the widen bandgap and limited charge transport caused by the bulky spacer cation. Herein, we introduce formamidinium chloride (FACl) as an additive into (4-FPEA)2MA4Pb5I16 perovskite. On the one hand, the addition of FACl narrows the bandgap through cation exchange between MA+ and FA+, thereby extending the light absorption range and enhancing photocurrent generation. On the other hand, this MA+/FA+ cation exchange decelerates the sublimation of methylammonium chloride and prolongs the crystallization of LDRP perovskite, leading to higher crystallinity and better film quality with a decreased trap-state density. Consequently, this approach led to a remarkable PCE of 20.46% for <n> = 5 LDRP perovskite solar cells (PSCs), ranking among the highest for MA/FA mixed low dimensional PSCs reported to date. Remarkably, our PSCs maintained 90% and 92% of the initial efficiency even after 1300 h at (60 ± 5)°C and (60 ± 5)% relative humidity, respectively. This work promotes the development of LDRP PSCs with excellent efficiency and environmental stability for potential commercial application.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.52","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142099988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sb-Se-based electrical switching device with fast transition speed and minimized performance degradation due to stable mid-gap states 基于硒化锑的电子开关器件过渡速度快，中隙态稳定，性能衰减最小

Electron Pub Date : 2024-06-15 DOI: 10.1002/elt2.46

Xianliang Mai, Qundao Xu, Zhe Yang, Huan Wang, Yongpeng Liu, Yinghua Shen, Hengyi Hu, Meng Xu, Zhongrui Wang, Hao Tong, Chengliang Wang, Xiangshui Miao, Ming Xu

{"title":"Sb-Se-based electrical switching device with fast transition speed and minimized performance degradation due to stable mid-gap states","authors":"Xianliang Mai, Qundao Xu, Zhe Yang, Huan Wang, Yongpeng Liu, Yinghua Shen, Hengyi Hu, Meng Xu, Zhongrui Wang, Hao Tong, Chengliang Wang, Xiangshui Miao, Ming Xu","doi":"10.1002/elt2.46","DOIUrl":"10.1002/elt2.46","url":null,"abstract":"Chalcogenide glass has a unique volatile transition between high- and low-resistance states under an electric field, a phenomenon termed ovonic threshold switching (OTS). This characteristic is extensively utilized in various electronic memory and computational devices, particularly as selectors for cross-point memory architectures. Despite its advantages, the material is susceptible to glass relaxation, which can result in substantial drifts in threshold voltage and a decline in off-current performance over successive operational cycles or long storage time. In this study, we introduce an OTS device made from stoichiometric Sb2Se3 glass, which retains an octahedral local structure within its amorphous matrix. This innovative material exhibits outstanding OTS capabilities, maintaining minimal degradation despite undergoing over 107 operating cycles. Via comprehensive first-principles calculations, our findings indicate that the mid-gap states in amorphous Sb2Se3 predominantly stem from the atomic chains characterized by heteropolar Sb-Se bonds. These bonds exhibit remarkable stability, showing minimal alteration over time, thereby contributing to the overall durability and consistent performance of the material. Our findings not only shed light on the complex physical origins that govern the OTS behavior but also lay the groundwork for creating or optimizing innovative electrical switching materials.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.46","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141336834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-temperature chemical vapor deposition growth of 2D materials 二维材料的低温化学气相沉积生长

Electron Pub Date : 2024-06-12 DOI: 10.1002/elt2.43

Minting Lei, Peijian Wang, Xiaofeng Ke, Jun Xie, Min Yue, Mei Zhao, Kenan Zhang, Youqing Dong, Quanlong Xu, Chao Zou, Shun Wang, Lijie Zhang

{"title":"Low-temperature chemical vapor deposition growth of 2D materials","authors":"Minting Lei, Peijian Wang, Xiaofeng Ke, Jun Xie, Min Yue, Mei Zhao, Kenan Zhang, Youqing Dong, Quanlong Xu, Chao Zou, Shun Wang, Lijie Zhang","doi":"10.1002/elt2.43","DOIUrl":"10.1002/elt2.43","url":null,"abstract":"Two-dimensional (2D) materials have atomic thickness, and thickness-dependent electronic transport, optical and thermal properties, highlighting great promise applications in future semiconductor devices. Chemical vapor deposition (CVD) is considered as an industry-oriented method for macro-synthesis of 2D materials. In conventional CVD, high temperatures are required for the synthesis of high-quality large-size 2D materials, which is incompatible with of back-end-of-line of the complementary metal oxide semiconductor (CMOS) techniques. Therefore, low-temperature synthesis of 2D materials is of critical importance for the advancement toward practical applications of 2D materials with the CMOS technologies. In this review, we focus on strategies for the low-temperature growth of 2D materials, including the use of low-melting-point precursors, metal-organic CVD, plasma-enhanced CVD, van der Waals-substrate vapor phase epitaxy, tellurium-assisted CVD, salt-assisted CVD, etc., with discussions of their reaction mechanisms, applications, associated advantages, and limitations. We also provide an outlook and perspectives of future low-temperature chemical vapor deposition growth of 2D materials.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.43","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141354348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The importance of precise and suitable descriptors in data-driven approach to boost development of lithium batteries: A perspective 数据驱动法中精确、合适的描述符对促进锂电池开发的重要性：透视

Electron Pub Date : 2024-06-02 DOI: 10.1002/elt2.41

Zehua Wang, Li Wang, Hao Zhang, Hong Xu, Xiangming He

{"title":"The importance of precise and suitable descriptors in data-driven approach to boost development of lithium batteries: A perspective","authors":"Zehua Wang, Li Wang, Hao Zhang, Hong Xu, Xiangming He","doi":"10.1002/elt2.41","DOIUrl":"10.1002/elt2.41","url":null,"abstract":"Conventional approaches for developing new materials may no longer be adequate to meet the urgent needs of humanity's energy transition. The emergence of machine learning (ML) and artificial intelligence (AI) has led materials scientists to recognize the potential of using AI/ML to accelerate the creation of new battery materials. Although fixed material properties have been extensively studied as descriptors to establish the link between AI and materials chemistry, they often lack versatility and accuracy due to a lack of understanding of the underlying mechanisms of AI/ML. Therefore, materials scientists need to have a comprehensive understanding of the operational mechanisms and learning logic of AI/ML to design more accurate descriptors. This paper provides a review of previous research studies conducted on AI, ML, and descriptors, which have been used to address challenges at various levels, ranging from materials development to battery performance prediction. Additionally, it introduces the basics of AI and ML to assist materials and battery developers in comprehending their operational mechanisms. The paper demonstrates the significance of precise and suitable ML descriptors in the creation of new battery materials. It does so by providing examples, summarizing current descriptors and ML algorithms, and examining the potential implications of future AI advancements for the sustainable energy industry.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.41","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141273768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Image, Volume 2, Number 2, May 2024 封面图片，第 2 卷第 2 号，2024 年 5 月

Electron Pub Date : 2024-05-30 DOI: 10.1002/elt2.54

Gaihong Wang, Zhijie Chen, Wei Wei, Bing-Jie Ni

引用次数: 0

Cover Image, Volume 2, Number 2, May 2024 封面图片，第 2 卷第 2 号，2024 年 5 月

Electron Pub Date : 2024-05-30 DOI: 10.1002/elt2.53

Jinghai Li, Yanyan Gong, William W. Yu

引用次数: 0

Account of eco-friendly energy conversion reaction: Iron-based nitrogen electrofixation 生态友好型能量转换反应的描述：铁基氮电固定

Electron Pub Date : 2024-05-30 DOI: 10.1002/elt2.40

Liyuan Xu, Zheng Zhu, Jingjing Duan, Sheng Chen

{"title":"Account of eco-friendly energy conversion reaction: Iron-based nitrogen electrofixation","authors":"Liyuan Xu, Zheng Zhu, Jingjing Duan, Sheng Chen","doi":"10.1002/elt2.40","DOIUrl":"https://doi.org/10.1002/elt2.40","url":null,"abstract":"Ammonia is a crucial raw ingredient used in the manufacturing of fertilizers and pharmaceuticals, which are major sectors of the national economy in the chemical and agricultural industries. The conventional Haber–Bosch method is still in use in the industry today to manufacture NH3, and the production process emits a significant quantity of CO2, which does not match the current standards for the achievement of carbon neutrality. The nitrogen reduction reaction (NRR) technology has garnered a lot of attention lately because of its benefits, which include being environmentally friendly, sustainable, and able to function in mild environments. However, NRR is still in its early stages of development and confronts numerous difficult issues, including slow reaction kinetics, low ammonia yield rates and Faradaic efficiency (FE), and a dearth of effective research on nitrogen fixation as a whole. This paper aims to promote the industrialization of NRR, summarizing the progress of iron-based catalysts, including single atomic catalysts, organic frameworks, metal oxides the, and alloys. Eventually, this paper discusses the strategies for improving NH3 yield rates and FE, improving reaction kinetics, and building a sustainable overall nitrogen fixation system. The development of iron-based catalysts in other fields has also been prospected.","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.40","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0