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A promising protective layer towards practical lithium metal batteries

Science Bulletin 2022年第17期67卷 1732-1734页

作者： Wenyi Liu Jinping Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China State Center for International Cooperation on Designer Low-carbon&Environmental Materials School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China

Li metal batteries(LMBs)are regarded as promising future high-energy batteries,but their practical application under the conditions of high current density and large areal capacity is impeded by Li dendrite growth and low Coulombic efficiency(CE)[1–4].This is largely due to the structural heterogeneity and mechanical fragility of the native solid-electrolyte interphase(SEI)formed in situ on the Li metal surface,which cannot stabilize and protect the Li anode[5–7].

关键词： electrolyte anode 锂金属

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Crystalline porous materials:from zeolites to metal-organic frameworks(MOFs)

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Frontiers of Chemical Science and Engineering 2020年第2期14卷 123-126页

作者： Zaiku Xie Bao-Lian Su State Key Laboratory of Green Chemical Engineering and Industrial Catalysis Sinopec Shanghai Research Institute of Petrochemical TechnologyShanghai 201208China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamurBelgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074China

As a class of important crystalline porous materials,zeolites which were first found in 1756 have now been widely used in chemical industries for catalysis,adsorption and separation.35232 patents with the title including Hzeolite*n are documented by Derwent Innovations Index on January 2,2020[1].Despite of spread applications of zeolites and related-materials in industry,fundamental research of zeolites and their applications are still desired in both academia and industry,as shown in Fig.1.

关键词： porous zeolites zeolite

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Controlled Incorporation of Zn into Nitrogen-Doped Porous Carbon Boosts the Alcohol Dehydrogenation to Carboxylic Acids

SSRN

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SSRN 2024年

作者： Gu, Jun-Fei Chen, Cheng Chaemchuen, Somboon Sang, Wei Li, Xing-Chuan Yuan, Ye Kou, Zongkui Verpoort, Francis State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan430070 China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya572000 China 6 Miklukho-Maklaya Str. Moscow117198 Russia

The dehydrogenation of primary alcohols to carboxylic acids is a crucial process in chemical industries such as fibers and plastics. Carboxylic acids, the resulting products, are not only important chemical raw materials but also fundamental pharmaceutical intermediates. Zn-based catalysts have gained attention as a promising option for this transformation owing to their economic cost and abundant reserves. However, stability issues, including structure collapse and morphological changes, have plagued the reported Zn-based catalysts during this transformation. In response to these challenges, this study focused on the design and development of Zn-based catalysts via controlled incorporation of Zn into nitrogen-doped porous carbon to modulate the numbers of defects and Lewis acid-base site pairs. Through extensive screening of various parameters, the best-performing catalyst, namely Zn@NC-800, exhibited high activity and remarkable stability, surpassing all the reported Zn-based catalysts. Moreover, this catalyst demonstrated great recyclability since it could maintain approximately 90% yields after 9 cycles. Notably, the product formation rate of this catalyst could reach 3833 μmol·gcat-1·h-1, exceeding that of most reported non-noble metal heterogeneous catalysts. Consequently, this study offers a promising approach for efficiently and stably catalyzing alcohol dehydrogenation reactions using non-noble metals. © 2024, The Authors. All rights reserved.

关键词： Carboxylic acids

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Impact of crystallinity on orbital torque generation in ferromagnets

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Physical Review B 2024年第14期109卷 144412-144412页

作者： Riko Fukunaga Satoshi Haku Tenghua Gao Hiroki Hayashi Kazuya Ando Department of Applied Physics and Physico-Informatics Keio University Yokohama 223-8522 Japan Keio Institute of Pure and Applied Sciences Keio University Yokohama 223-8522 Japan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Center for Spintronics Research Network Keio University Yokohama 223-8522 Japan

We investigate the impact of crystallinity on the generation of orbital torques in Ni, which is predicted to exhibit the strongest orbital response among conventional 3d ferromagnetic metals. We show that the current-induced torques in Hf/Ni bilayers are primarily dominated by the orbital torque, arising from the orbital Hall effect in the Hf layer. We find that the orbital torque efficiency is enhanced by a factor of 2 when the stacking order of the Hf/Ni bilayer is altered. Through the examination of bulk and interfacial structural properties of the Ni and Hf layers, and by quantifying the torque efficiency in a symmetric Hf/Ni/Hf trilayer, we show that the orbital torque efficiency is strongly dependent on the crystallinity of the Ni layer. This dependence is in stark contrast to conventional spin-orbit torques, which arise from the spin Hall effect and are typically insensitive to the crystallinity of the ferromagnetic layer. These findings highlight the significant role of the crystalline structure of the ferromagnetic layer in its orbital response and illustrate the potential of crystal structure engineering in optimizing orbital torques.

关键词： Magnetization dynamics Spin current Spin-orbit coupling Spin-orbit torque Spintronics

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Printed aerogels: Chemistry, processing, and applications

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Chemical Society Reviews 2021年第6期50卷 3842-3888页

作者： Feng, Junzong Su, Bao-Lian Xia, Hesheng Zhao, Shanyu Gao, Chao Wang, Lukai Ogbeide, Osarenkhoe Feng, Jian Hasan, Tawfique Cambridge Graphene Centre University of Cambridge CambridgeCB3 0FA United Kingdom Science and Technology on Advanced Ceramic Fibers and Composites Laboratory National University of Defense Technology Changsha Hunan410073 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Loushi Road 122 Wuhan430070 China Laboratory of Inorganic Materials Chemistry Department of Chemistry University of Namur 61 rue de Bruxelles NamurB-5000 Belgium State Key Laboratory of Polymer Materials Engineering Polymer Research Institute Sichuan University Chengdu610065 China Laboratory for Building Energy Materials and Components Swiss Federal Laboratories for Materials Science and Technology EmpaCH-8600 Cyprus MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University 38 Zheda Road Hangzhou310027 China

As an extraordinarily lightweight and porous functional nanomaterial family, aerogels have attracted considerable interest in academia and industry in recent decades. Despite the application scopes, the modest mechanical durability of aerogels makes their processing and operation challenging, in particular, for situations demanding intricate physical structures. "Bottom-up"additive manufacturing technology has the potential to address this drawback. Indeed, since the first report of 3D printed aerogels in 2015, a new interdisciplinary research area combining aerogel and printing technology has emerged to push the boundaries of structure and performance, further broadening their application scope. This review summarizes the state-of-the-art of printed aerogels and presents a comprehensive view of their developments in the past 5 years, and highlights the key near- and mid-term challenges. This journal is © The Royal Society of Chemistry.

关键词： Aerogels

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Voltage Prediction and Extrapolation in Complex Pem Fuel Cell Conditions Via Transfer Learning from Localized Data

SSRN

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SSRN 2024年

作者： Zhu, Wenchao He, Tingwei Wu, Hangyu Yang, Yang Wei, Peng Xie, Changjun Xiong, Rui State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China School of Automation Wuhan University of Technology Wuhan430070 China Wuhan Industrial Technology Institute of Artificial Intelligence and New Energy Vehicles Wuhan430119 China Joint Laboratory for Advanced Energy Storage and Application School of Mechanical Engineering Beijing Institute of Technology Beijing100081 China

Transfer learning effectively leverages knowledge from source tasks to mitigate the reliance on large datasets in data-driven fuel cell health state prediction methods. However, in practical applications, the significant variation in degradation data distribution across different fuel cell types and operating conditions hinders knowledge transfer between source and target domains. Moreover, the complex and variable operating conditions of PEMFCs pose additional challenges to accurate prediction and diagnosis. Accurately characterizing future fuel cell stacks degradation characteristics under complex conditions using limited data from specific operating conditions is crucial for effective fuel cell health monitoring. A TCN-GRU-based transfer learning architecture is proposed to enable the transfer of knowledge from quasi-dynamic data to dynamic conditions. This approach reduces time costs by 41.56% and increases accuracy by 48.29%. Its generalization capability is thoroughly demonstrated across nine current levels in the activation and ohmic regions. Additionally, a voltage extrapolation method using Deep MMD is proposed. Based on limited data from specific operating conditions in the activation and ohmic regions, the proposed transfer learning method reconstructs voltage for future potential operating conditions, enabling precise characterization of fuel cell voltage degradation trends under unknown conditions, providing comprehensive insights for fuel cell operation. © 2024, The Authors. All rights reserved.

关键词： Extrapolation

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Nanowires in composite solid-state electrolytes: synthesis, structures and applications

Nano Trends

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Nano Trends 2024年 7卷

作者： Dong, Guangyao Zhang, Hong Cheng, Yu Xu, Lin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Hubei Longzhong Laboratory Wuhan University of Technology (Xiangyang Demonstration Zone) Hubei Xiangyang 441000 China Hainan Institute Wuhan University of Technology Sanya 572000 China

Solid-state electrolytes (SSEs) are regarded as crucial materials, thus determining the comprehensive properties of solid-state lithium batteries (SSLBs). However, the existing issues of ion transport and interface limit their further development and application. As the inorganic solid-state electrolytes (ISEs) and polymer solid-state electrolytes (PSEs) both present obvious advantages and defects, the strategy of preparing composite solid-state electrolytes (CSEs) by incorporating inorganic components in polymer matrix is considered an effective way to overcome the above-mentioned problems. Nanowires with high aspect ratios are widely used in CSEs. Moreover, nanowires can not only effectively enhance the mechanical properties and ion transport efficiency of SSEs, but also boost the contact between electrolyte and electrode interface, thereby improving the cycle stability and safety of SSLBs. This review systematically categorized nanowires according to their morphology, function, and Li⁺ conductivity, and discussed their structural properties and synthesis strategies in detail. Moreover, application examples and mechanisms of nanowires in different polymer matrices are also introduced. In the summary and prospect section, we anticipate the existing challenges and future objectives of nanowires in the future research of CSEs. © 2024 The Authors

关键词： Composite solid-state electrolytes Inorganic fillers Nanowires Polymer matrix Solid-state lithium batteries

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3D nonlinear photolithography of tin oxide ceramics via femtosecond laser

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Science China materials 2021年第6期64卷 1477-1484页

作者： Nianyao Chai Yanan Liu Yunfan Yue Ping Wei Xuewen Wang Junjie Zhao Qi Zhang Fuzhi Huang Zhongle Zeng Zongsong Gan Liqiang Mai Yibing Cheng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong LaboratoryFoshan 528216China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

As a wide band gap semiconductor material,tin oxide(SnO_(2))has been widely used in gas sensing,optoelectronics and *** complex micro and nanoscale threedimensional(3D)geometric structures endow the conventional SnO_(2)ceramics with novel properties and ***,ceramics cannot be cast or machined easily due to their high mechanical toughness and *** additive manufacturing opens a great opportunity for flexibly geometrical shaping,while the arbitrary shaping of SnO_(2)ceramics at micro and nanoscale is always a ***,preceramic monomers which can be polymerized under ultrafast laser irradiation,were utilized to form complex and arbitrary 3D preceramic polymer *** calcination treatment,these green-body structures could be converted into pure high-dense SnO_(2)ceramics with uniform shrinkage,and the feature size was down to *** electron microscopy(TEM)analysis displays that the printed SnO_(2)ceramic nanostructures can be nanocrystallized with grain sizes of 2.5±0.4 *** work provides the possibility of manufacturing 3D SnO_(2)ceramic nanostructures arbitrarily with sub-100 nm resolution,thus making it promising for the applications of SnO_(2)in different fields.

关键词： tin oxide ceramics nonlinear photolithography femtosecond laser

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Chemical adsorption on 2D dielectric nanosheets for matrix free nanocomposites with ultrahigh electrical energy storage

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Science Bulletin 2022年第6期67卷 609-618,M0004页

作者： Jie Chen Zhonghui Shen Qi Kang Xiaoshi Qian Shengtao Li Pingkai Jiang Xingyi Huang Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing Department of Polymer Science and EngineeringThe State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'an 710054China

Relaxor ferroelectric polymers display great potential in capacitor dielectric applications because of their excellent flexibility,light weight,and high dielectric ***,their electrical energy storage capacity is limited by their high conduction losses and low dielectric strength,which primarily originates from the impact-ionization-induced electron multiplication,low mechanical modulus,and low thermal conductivity of the dielectric *** a matrix free strategy is developed to effectively suppress electron multiplication effects and to enhance mechanical modulus and thermal conductivity of a dielectric polymer,which involves the chemical adsorption of an electron barrier layer on boron nitride nanosheet surfaces by chemically adsorbing an amino-containing polymer.A dramatic decrease of leakage current(from 2.4×10^(-6)to 1.1×10^(-7)A cm^(-2)at 100 MV m^(-1))and a substantial increase of breakdown strength(from 340 to 742 MV m^(-1))were achieved in the nanocompostes,which result in a remarkable increase of discharge energy density(from 5.2 to 31.8 J cm^(-3)).Moreover,the dielectric strength of the nanocomposites suffering an electrical breakdown could be restored to 88%of the original *** study demonstrates a rational design for fabricating dielectric polymer nanocomposites with greatly enhanced electric energy storage capacity.

关键词： Boron nitride nanosheets Electron barrier layer Relaxor ferroelectric polymers Nanocomposites Electrical energy storage

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Low Temperature Method-Based Evaporation/Spray-Coating technology for Wide Bandgap Perovskite Solar Cells

SSRN

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SSRN 2024年

作者： Liang, Cheng Du, Hong-Qiang Geng, Cong Yu, Xinxin Jiang, Xiongzhuang Huang, Shangwei Long, Fei Han, Liyuan Li, Wangnan Liang, Guijie Li, Bin Cheng, Yi-Bing Peng, Yong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China College of Materials Science and Engineering Guilin University of Technology Guangxi Guilin541004 China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai200240 China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science Xiangyang441053 China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang441000 China

Years of working on perovskite solar cells (PSCs) based tandem devices and single-junction devices have approved that low annealing temperature can be beneficial of improving devices performances. In this paper, a pseudo-halogen ion engineering works well in the evaporation/spray-coating method. According to our research, it is proved that the addition of formamidine acetate (FAAc) can effectively reduce annealing temperature from 170 ℃ to 150 ℃, accelerate the maturation process of the perovskite films, and broaden the annealing window. As a result, a perovskite film with homogeneous crystallization and low residual stress is achieved, leading to extended charge carrier lifetimes, elevated photoluminescence quantum yields (PLQY), reduced Urbach energies. The corresponding PSCs prepared through evaporation/spray-coating method achieve an impressive power conversion efficiency (PCE) of 19.46%, which is the highest efficiency among wide-bandgap (WBG) PSCs fabricated by this method. And the unencapsulated devices exhibit satisfactory stability, retaining 80% of the initial PCE after 600 h of thermal aging at 60 ℃ and retaining 90% of the initial PCE after 1500 h of 50% humidity aging at 25 °C, respectively. © 2024, The Authors. All rights reserved.

关键词： Evaporation

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