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Bag-pressed plasticine carbon electrodes for perovskite solar cells and modules

Solar Energy materials and Solar Cells 2025年 290卷

作者： Liao, Teng Zhu, Aodong Jiang, Yuanzhu Zhao, Wang Cheng, Mengmeng Xiao, Junyan Cheng, Yi-Bing School of Materials Science and Engineering Wuhan University of Technology 122 Luoshi Road Hubei Wuhan China State Key Laboratory of Advanced Technologies for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Hubei Wuhan China Research Centre for Advanced Thin Film Photovoltaics Wuhan University of Technology 122 Luoshi Road Hubei Wuhan China

Carbon-based top electrodes have significant value in enhancing the stability and reducing the cost of perovskite solar cells (PSCs). However, the fabrication process for carbon-based top electrodes in large-area, high-performance perovskite solar modules (PSMs) still lacks practical techniques. In this work, we reference the bag moulding process and use a plasticine-like uncured carbon paste to prepare the top electrode for small-area PSCs and PSMs. Benefiting from the uniform pressure provided by the bag pressing process, this carbon electrode can make sufficiently good electrical contact with the hole transport layer in the large-area device in a single pass. After further removing excess fluid, the device can achieve efficiencies of 18.57 % (∼0.15 cm2) and 14.44 % (∼10 cm2) with good stability. This convenient top electrode preparation method at room temperature offers a novel technological solution for the commercial application of large-area PSMs. © 2025 Elsevier B.V.

关键词： Carbon electrodes

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AI-driven material discovery for energy, catalysis and sustainability

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National Science Review 2025年第5期 77-78页

作者： Ning Han Bao-Lian Su Department of Electrical and Computer Engineering University of Toronto Laboratory of Inorganic Materials Chemistry(CMI) University of Namur State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Artificial intelligence (AI) is revolutionizing various sectors, including science,technology, industry and daily life [1,2].One key area where AI can make a significant impact is in material design, crucial for advan...

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Effect of stress loading direction on microstructure evolution and age-hardening behavior of a stress-aged Mg-7Sn alloy

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Journal of Alloys and Compounds 2025年 1032卷

作者： Jiang, Jing Ran, Jishang Tong, Lin Bi, Guangli Li, Yuandong Chen, Tijun State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China School of Material Science and Engineering Lanzhou University of Technology Lanzhou730050 China AVIC Shaanxi Hongyuan Aviation Forging Company Ltd. Xianyang713801 China

The effect of stress loading direction on microstructure evolution and age-hardening behavior of a stress-aged Mg-7Sn alloy with a compressed stress of 40 MPa at 160 °C was investigated in this paper. The compressive stress perpendicular to the c-axis effectively facilitated the formation of a high volume fraction of twins and Mg2Sn phases, thereby promoting a c-axis//ED texture. In contrast, the stress parallel to the c-axis resulted in the formation of small amounts of twins and Mg2Sn phases, which further reinforced the basal plane texture. The stress aging with compressive stress applied perpendicular to the c-axis significantly increased the peak hardness of the alloy and reduced the time reached the peak hardness, compared to compressive stress applied parallel to the c-axis. The compressive testing results indicated that the stress peak-aged alloy perpendicular to the c-axis exhibited excellent mechanical properties, whose compressive yield strength, ultimate compressive strength and compressive elongation were 191.3 MPa, 449.9 MPa and 12.6 %, respectively. The high compressive strengths of the peak-aged alloy at a compressive stress perpendicular to the c-axis was mainly attributed to the grain refinement and precipitation strengthening of Mg2Sn phase. © 2025 Elsevier B.V.

关键词： Microhardness

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Zero-Valent Iron Supported by Dendritic Mesoporous Silica Nanoparticles to Purify Dye Wastewater

SSRN

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SSRN 2023年

作者： Chang, Baisong Dong, Kangfeng Wu, Shaolong Sun, Taolei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan430070 China

The presence of different types of organic dyes in water stream will clearly give rise to unexceptional side effects on living organisms. Emerging physical or chemical methods have been developed for the treatment of dye-involving water, but the exploration for adequate design strategy and technique available is still ongoing. Here, the zero-valent iron (ZVI) was prepared by a liquid phase sodium borohydride reduction approach and then integrated with dendritic mesoporous silica nanoparticle (DMSN) to construct the Janus magnetic adsorbent (denoted as ZVI-DMSN), which could be employed to purify dye wastewater. The structure, magnetic properties and dye adsorption results of ZVI-DMSN were systematically investigated. The ZVI component can enable efficient solid-liquid separation through magnetic separation route, and, more importantly, provided additional binding sites for adsorption process to increase the adsorption capacity. The thermodynamic analysis of adsorption indicated that the adsorption of typical organic dyes was an irreversible, spontaneous and endothermic process. Moreover, ZVI-DMSN adsorbent was recyclable, showing a regeneration efficiency of more than 80% after 5 cycles. We believe that ZVI-DMSN, as an inexpensive adsorbent material with excellent adsorption properties, e.g., short time, high efficiency and large capacity, will host vast potential for removal of dyes in water bodies. © 2023, The Authors. All rights reserved.

关键词： Wastewater treatment

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Elevating the d-Band Center of Ni3S2Nanosheets by Fe Incorporation to Boost the Oxygen Evolution Reaction

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Langmuir 2023年第15期39卷 5375-5383页

作者： Jie Ying Zhen-Zhao He Jiang-Bo Chen Yu-Xuan Xiao Xiao-Yu Yang School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China State Key Laboratory Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao) Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China

Many attempts have been made to enhance the relatively poor electrochemical activity of Ni3S2 for the oxygen evolution reaction (OER) by elevating the d-band center. Unfortunately, only limited suc...

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Correction to: Durable Fe3O4/PPy Particle Flow Spun Textile for Electromagnetic Interference Shielding and Joule Heating (advanced Fiber materials, (2025), 7, 2, (513-527), 10.1007/s42765-024-00498-2)

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advanced Fiber materials 2025年 1-1页

作者： Liu, Jiaxin Qi, Shuo Wang, Hongshan Fu, Chiyu Xu, Weilin Su, Bin Tang, Wenyang Xia, Zhigang State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Textile Science and Engineering Industry Research and Development Center of Functional Materials and Textile New Technology Textile Industry Key Laboratory of Yarn and Its Functionalization Wuhan Textile University Hubei Wuhan430200 China State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China National Local Joint Engineering Laboratory of Resin-Based Structure and Functional Material Technology Hubei Xiaogan432100 China

In this article the first affiliation details for Jiaxin Liu were incorrectly given as 'state key laboratory of New Textile materials and advanced processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, Hubei, People’s Republic of China' but should have been 'state key laboratory of New Textile materials and advanced processing Technologies, School of Textile Science and Engineering, Industry Research and Development Center of Functional materials and Textile New technology, Textile Industry key laboratory of Yarn and Its Functionalization, Wuhan Textile University, Wuhan, 430200, Hubei, People’s Republic of China'. The original article has been corrected. © Donghua University, Shanghai, China 2025.

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Understanding the Environmentally Driven Corrosion Behavior and Mechanism of Aln/Mo Functionally Graded materials Exposed to Li/Lif-Licl-Libr Vapor

SSRN

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SSRN 2022年

作者： Jia, Mingyong Chen, Fei He, Yaling Wu, Yueqi Shen, Qiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China

The environment temperature-driven corrosion behavior and mechanism of Li/LiF-LiCl-LiBr vapor on AlN/Mo functionally graded materials were investigated. It is shown that the corrosion failure of AlN/Mo FGMs driven by Li vapor begins at 650 ℃. Li vapor not only diffuses along the grain boundaries of AlN but also enters the interior of the adjacent AlN grains, leading to the disintegration of the AlN matrix. The 3D framework of Mo is hardly affected in Li/LiF-LiCl-LiBr vapor, preventing the cracking caused by inconsistent deformation inside the AlN/Mo sealing component. This work provides a reference for the operating temperature of liquid metal batteries. © 2022, The Authors. All rights reserved.

关键词： Aluminum nitride

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Scalable fabrication and active site identification of MOF shell-derived nitrogen-doped carbon hollow frameworks for oxygen reduction

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Journal of materials Science & technology 2021年第7期66卷 186-192页

作者： Jiashen Meng Ziang Liu Xiong Liu Wei Yang Lianzhou Wang Yan Li Yuan-Cheng Cao Xingcai Zhang Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD4072Australia Shenzhen Power Supply Col.Ltd. Shenzhen CityChina State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan430074China John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA02138United States

Nitrogen-doped carbon materials as promising oxygen reduction reaction(ORR) electrocatalysts attract great interest in fuel cells and metal-air batteries because of their relatively high activity, high surface area, high conductivity and low cost. To maximize their catalytic efficiency, rational design of efficient electrocatalysts with rich exposed active sites is highly desired. Besides, due to the complexity of nitrogen species, the identification of active nitrogen sites for ORR remains challenging. Herein, we develop a facile and scalable template method to construct high-concentration nitrogen-doped carbon hollow frameworks(NC), and reveal the effect of different nitrogen species on theirORRactivity on basis of experimental analysis and theoretical calculations. The formation mechanism is clearly revealed, including low-pressure vapor superassembly of thin zeolitic imidazolate framework(ZIF-8) shell on ZnO templates,in situ carbonization and template removal. The obtained NC-800 displays better ORR activity compared with other NC-700 and NC-900 samples. Our results indicate that the superior ORR activity of NC-800 is mainly attributed to its content balance of three nitrogen species. The graphitic N and pyrrolic N sites are responsible for lowering the working function, while the pyridinic N and pyrrolic N sites as possible active sites are beneficial for increasing the density of states.

关键词： MOF shell Nitrogen-doped carbon Hollow framework Oxygen reduction Active nitrogen sites

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Enhanced Elastocaloric Effect and Mechanical Properties of Gd-Doped Ni-Co-Mn-Ti-Gd Metamagnetic Shape Memory Alloys

SSRN

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SSRN 2023年

作者： Xu, Feng Zhu, Can Wang, Jian Luo, Feng Zhu, Xinqiang Xu, Jiahui Chen, Shuquan Ma, Guoliang Chen, Fenghua Kuang, Yafei He, Jun Sun, Zhigang School of Materials Science and Engineering Taiyuan University of Science and Technology Taiyuan030024 China State Key Laboratory of Advanced Materials Composite Technology Wuhan University of Technology Wuhan430070 China Central Iron and Steel Research Institute Beijing100081 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing China

Improving elastocaloric effect (eCE) and mechanical properties is the key to developing high-performance eCE cooling materials. In this paper, the metamagnetic shape memory alloys Ni35.5Co13.5Mn35Ti15-x Gdx was successfully prepared by arc melting method, and the effects of Gd substitution for Ti on the martensitic transformation (MT) temperature, phase composition, microstructure, eCE and mechanical properties of the alloys were systematically investigated. With the introduction of Gd elements, transformation temperature shifts to low temperature, and the mechanical properties of the alloy are also enhanced. The maximum compressive strength increased from 980MPa (x=0) to 1142MPa (x=0.9). At room temperature, a large adiabatic temperature change of +13.5/-12.7 K is obtained after loading/unloading, and a constant temperature change of +5.6K/-5.5K is obtained without apparent degradation under the compressive stress of 400 MPa during 61 cycles for Ni36.5Co13.5Mn35Ti14.9Gd0.1 alloy. The underlying mechanism of the enhanced eCE and mechanical properties is also discussed. © 2023, The Authors. All rights reserved.

关键词： Titanium alloys

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Enhancing energy density of poly(vinylidene fluoride) composite film via addition of N-doped carbon modified boron nitride and sandwich-structural engineering

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Applied Surface Science 2023年第1期640卷

作者： Huang, Huabo Mei, Wentao Wang, Yucong Huang, Juan Li, Liang Ji, Jiayou Xiong, Chuanxi Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Key Laboratory for Green Chemical Process of Ministry of Education School of Materials Science and Engineering Wuhan Institute of Technology Wuhan430205 China Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

It is a challenge to simultaneously enhance dielectric constant and breakdown strength of dielectrics and achieve a greatly elevated energy density. Herein, polyaniline was first coated onto the surface of boron nitride nanosheets (BN), and then nitrogen-doped carbon (NC) was formed through a carburization process, resulting in BN@NC composite, which was subsequently added to poly(vinylidene fluoride) (PVDF) to prepare a composite film with high dielectric performance. The characterization showed that BN@NC effectively preserved the nanosheet structure of BN and formed strong hydrogen bonding interactions with the PVDF matrix, promoting the β-PVDF formation. This not only improved the compatibility but also enhanced the interfacial polarization between conductive NC and the polymer, leading to a high dielectric constant. Moreover, the electrically insulating BN prevented the formation of leakage current, resulting in a high breakdown strength. Finally, a sandwich-structured film was constructed, and exhibited a dielectric constant of 10.2 (at 1 kHz), a breakdown strength of 380 MV m−1, and an energy density of 6.1 J cm−3, which were 20%, 36%, and 74% higher, respectively, than those of pure PVDF film (8.5, 280 MV m−1, and 3.5 J cm−3). This work highlights significant potential for applications in low-cost and high-energy density dielectric composites. © 2023 Elsevier B.V.

关键词： Boron nitride

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