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Synergistic p-doping and interface passivation of P3HT by oxidized organic small molecules toward efficient and stable perovskite solar modules

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Journal of Energy Chemistry 2025年 108卷 477-484页

作者： Lv, Pin Zhang, Yuxi Tan, Wen Liang Pan, Junye Zhu, Yanqing Chen, Jiahui Duan, Bingxin Hou, Peiran Hu, Min McNeill, Christopher R. Lu, Jianfeng Cheng, Yi-Bing State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Hubei Wuhan430070 China Department of Materials Science and Engineering Monash University ClaytonVIC3800 Australia ClaytonVIC3168 Australia School of Electronic and Electrical Engineering Hubei Province Engineering Research Center for Intelligent Micro-Nano Medical Equipment and Key Technologies Wuhan Textile University Hubei Wuhan430200 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan430070 China

Poly(3-hexylthiophene) (P3HT) is one of the most promising hole-transporting materials in the pursuit of efficient and stable perovskite solar cells due to its outstanding stability and low cost. However, the intrinsic low carrier density of P3HT and poor contact between the P3HT/perovskite interface always lead to a low performance of the solar cell, while conventional chemical doping always makes the films unstable and limits the scalab.lity. In this work, for the first time, we simultaneously enhanced the hole transporting properties of P3HT film and the interface of perovskite by doping it with a judiciously designed oxidized small molecule organic semiconductor. The organic salt not only can promote the lamellar crystallinity of P3HT to obtain better charge transport properties, but also reduce the defects of perovskite. As a result, we achieved champion efficiencies of 23.0% for small-area solar cells and 18.8% for larger-area modules (48.0 cm2). This efficiency is the highest value for P3HT-based perovskite modules. Moreover, the solar cells show excellent operational stability, retaining over 95% of their initial efficiencies after 1200 h of continuous operation. © 2025 Science Press

关键词： Semiconductor doping

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Sym- and Asym-Expanded Heterohelicene Isomers Featuring Extended Multi-Resonance Skeleton for Narrowband Deep-Blue Fluorescence

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Angewandte Chemie - International Edition 2025年第13期64卷

作者： Zeng, Xuan Luo, Xiaofeng Meng, Guoyun Wang, Xuewen Zhang, Dongdong Duan, Lian School of Chemistry Chemical Engineering and Life Science State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing100084 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen Valley Foshan528200 China Center for Flexible Electronics Technology Tsinghua University Beijing100084 China

Expanded heterohelicenes composed of alternating linearly and angularly fused multi-resonance (MR) skeletons have gained wide interest owing to their promising narrowband emissions. Herein, a pair of sym- and asym-expanded heterohelicene isomers was obtained by merging boron/oxygen (B/O)-embedded MR triangulene and indolo[3,2,1-jk]carbazole units via one-pot synthesis. Owing to their fully resonating extended helical skeleton, the target heterohelicenes exhibit a significantly narrowed spectra bandwidth while emission red-shifting, thus affording deep-blue narrowband emission with a peak at approximately 460 nm, full-width-at-half-maximum (FWHM) of only 18 nm, and near-unity photoluminescence quantum yields. In comparison to the symmetrical structure, the asym-expanded heterohelicene displays suppressed aggregation within doped films, thereby showing superior narrowband electroluminescence in devices with CIE coordinates of (0.12, 0.18) and a high external quantum efficiency of up to 25 %, which retains 18.1 % even at a high luminance of 10,000 cd m−1. Overall, this work provides a novel paradigm for the development of narrowband expanded heterohelicenes. © 2025 Wiley-VCH GmbH.

关键词： Electroluminescence

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Dioxole-contained perfluorosulfonated ionomers with different equivalent weights as catalyst binder and proton conductor for proton exchange membrane fuel cells

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Fuel 2025年 399卷

作者： Wang, Cairong Tong, Yao Wang, Yadong Tang, Haolin Zhang, Haining State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Nr. 122 Luoshi Rd. Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan528200 China Hubei Key Laboratory of Fuel Cell Wuhan University of Technology Hubei Wuhan430070 China

Improving the oxygen transport ability without sacrificing proton conductivity in cathode catalyst layer is an essential way to increase the performance, thereby reducing platinum usage of proton exchange membrane fuel cells (PEMFCs). Herein, we report the influence of equivalent weight of dioxole-contained highly oxygen permeable perfluorosulfonic acid ionomers as catalyst binder and proton conductor in cathode catalyst layer on the performance of PEMFC. The results reveal that the increase in the fraction of dioxole segments leads to the enhanced oxygen permeation but the decreased proton conductivity in catalyst layer. With optimization of equivalent weight of the synthesized ionomers, the accordingly assembled cell with platinum loading of 0.125 mg cm−2 for both anode and cathode exhibits an improved concentration polarization, leading to an increased peak power density by 166 mW cm−2 at current density of 2900 mA cm−2 compared to Nafion ionomer-based PEMFC at 2800 mA cm−2 using hydrogen and air as reactant gases. © 2025 Elsevier Ltd

关键词： Oxygen permeable membranes

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Tris-based protic ionic liquids with multiple adsorption effects enabling excellent anti-wear and anti-corrosion performances

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Journal of Molecular Liquids 2025年 425卷

作者： Ge, Shanqin Chen, Long Li, Wei Cai, Qingzhao Gong, Genxiang Wu, Junhao Yu, Jinhong Nishimura, Kazuhito Jiang, Nan Cai, Tao School of Materials Science and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Advanced Nano-processing Engineering Lab Mechanical Engineering Kogakuin University Tokyo192-0015 Japan

Molecular additives have garnered widespread attention in the fields of lubrication and corrosion protection due to their designable interfacial film-forming efficiency. Herein, three protic ionic liquids (PILs) with the same cation but different anions have been designed and synthesized. Their physicochemical properties, tribological properties and anti-corrosion properties were systematically investigated. Results demonstrated that under dynamic steel-on-steel friction conditions, the PILs can maximally reduce the running-in period, friction coefficient, and wear rate by 90 %, 40 %, and 97 %, respectively, compared to the commercial ionic liquid, BMIMPF6. Under static copper corrosion conditions, the PILs efficiently adsorb onto the copper surface and formed a dense oxide layer on its surface, thus achieving excellent corrosion protection for the copper substrates. Molecular dynamics (MD) simulation results indicate that the exceptional lubricity of PILs is due to its ability to rapidly adsorb onto the metal surface through multiple interaction sites on both its anionic and cationic components, thereby reducing the running-in period and swiftly establishing a lubricating film. This study provides insights into the development of molecular additives featuring multiple adsorption sites, with potential applications in the fields of tribology and corrosion engineering. © 2025

关键词： Tribology

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Compatible matching and synergy operation optimization of hydrogen-electric hybrid energy storage system in DC microgrid

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Energy Conversion and Management: X 2025年 26卷

作者： Du, Banghua Peng, Yanyu Li, Yang Xie, Changjun Zhu, Shihao Zhu, Wenchao Yang, Yang You, Li Zhang, Leiqi Zhao, Bo Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China School of Automation Wuhan University of Technology Wuhan430070 China Department of Electrical Engineering Chalmers University of Technology Gothenburg41258 Sweden State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan430070 China State Grid Hubei Electric Power Research Institute Wuhan430077 China State Grid Zhejiang Electric Power Research Institute Hangzhou310014 China

Hydrogen energy storage (HES) systems could balanced source-load mismatches in DC microgrids. By combining HES with electrical energy storage (EES), the start-up delay and rapid degradation of HES under fluctuating inputs can be mitigated, enhancing system adaptability. However, without proper power allocation and operational optimization, system efficiency and the lifespan of HES and EES decrease. Accordingly, this paper proposes a compatible matching and synergy operation optimization for hydrogen-electric hybrid energy storage systems (H-E HESS). Firstly, Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) is developed to decompose power fluctuation signals into frequency components, and the Hilbert transform calculates the energy value to determine high- and low-frequency dividing points. Next, a system power allocation strategy is formulated through the fast response of the EES to compensate for the delay in the start-up of the HES. A multi-objective optimization model is then developed to balance efficiency and lifespan, which is solved by the NSGA-III algorithm. Finally, case studies show that the proposed strategy improves efficiency by 17.95 % and 8.34 %, reduces degradation rates by 1 % and 0.71 %, and shortens system response time in 1 s, compared to Schemes I and II. The strategy's effectiveness is also validated through an experimental platform in a hydrogen-electric coupled DC microgrid demonstration project. © 2025 The Author(s)

关键词： Hydrogen storage

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Facet Engineering of Metal-Organic Frameworks for Triboelectric Nanogenerators-Based Self-Powered Water Splitting

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advanced materials 2025年第20期37卷 e2415616页

作者： Kuang, Tairong Deng, Linbing Liu, Mingjin Ding, Yutong Guo, Wei Cai, Zhao Liu, Wenxian Huang, Zhao-Xia Lab State Key Laboratory of Advanced Separation Membrane Materials College of Materials Science and Engineering Zhejiang University of Technology Hangzhou310014 China National Engineering Research Center of Novel Equipment for Polymer Processing Key Laboratory of Polymer Processing Engineering Ministry of Education Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing Department of Mechanical and Automotive Engineering South China University of Technology Guangzhou510641 China Faculty of Materials Science and Chemistry China University of Geoscience Wuhan430074 China

Metal-organic frameworks (MOFs) are highly versatile materials with tunable chemical and structural properties, making them promising for triboelectric nanogenerators (TENGs) and electrocatalysis. However, achieving precise control over MOF coordination structures to optimize facet-dependent properties remains challenging. Here, a facile and scalab.e dual-solvent synthesis strategy is presented to fabricate dendrite Co-2-methylimidazole MOF (ZIF-67-D), enabling tailored preferred facet and coordination environments. Using density functional theory (DFT) calculations and synchrotron-based X-ray absorption spectroscopy, it is demonstrated that ZIF-67-D, enriched with (112) facets, features a reduced Co coordination number and enhanced electron-donating ability compared to the conventionally (011) facet-dominated rhombic dodecahedron ZIF-67 (ZIF-67-R). This facet engineering boosts TENG charge density by 2.4-fold, OER current density by 9.9-fold (@1.65 V), and HER current density by 1.9-fold (@-0.3 V). The (112)/(011) facet ratio can be also tuned to precisely alter TENG output. Moreover, the optimized ZIF-67-D shows excellent stability, maintaining electrolyzer performance for 72 h and enabling TENG devices even in high humidity. Consequently, ZIF-67-D-based TENG (D-TENG) devices exhibit robust energy generation and power ZIF-67-D||ZIF-67-D electrolyzers for continuous hydrogen (H2) production. These findings introduce a new paradigm for converting mechanical energy into sustainable chemical energy, offering insights into facet engineering for high-performance energy harvesting systems. © 2025 Wiley-VCH GmbH.

关键词： Electrocatalysis

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Fabrication of physically multi-crosslinked sodium alginate/carboxylated-chitosan/attapulgite-base aerogel modified by polyethyleneimine for the efficient adsorption of organic dye and Cu(II) contaminants

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International Journal of Biological Macromolecules 2025年 312卷 144188页

作者： Zhang, Zongrui Sun, Jianjun Wei, Xianglong Bai, Guona Zhang, Wencai Xiang, Yixin Li, Mengqun Gao, Jiangang Wang, Xinyu School of Chemical and Environmental Engineering Anhui Polytechnic University Wuhu241000 China Far East Cable CO. Ltd. Yixing214257 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan430070 China

The simultaneous presence of heavy metal ions and organic dyes presents significant challenges for the wastewater treatment sector. In response to this pressing issue, a novel composite aerogel has been developed: polyethyleneimine-modified sodium alginate/carboxylated chitosan/attapulgite aerogels (ATP/CCS/SA-PEI), which effectively facilitates the concurrent removal of copper ions (Cu(II)), Congo red (CR), and methylene blue (MB) from aqueous solutions. Under optimal adsorption conditions, ATP/CCS/SA-PEI exhibits superior adsorption capacities for Cu(II), MB, and CR when compared to the unmodified raw materials at equivalent dosages, achieving maximum capacities of 228.24 mg/g for Cu(II), 206 mg/g for MB, and 290.13 mg/g for CR. Additionally, the presence of coexisting ions exerts a minor adverse effect on adsorption efficiency, indicating that the synthesized ATP/CCS/SA-PEI aerogels possess commendable environmental adaptability. Characterization techniques reveal that the primary mechanisms underlying adsorption involve electrostatic interactions, hydrogen bonding, coordination complex formation, and ion exchange synergies. Simultaneously, the ATP/CCS/SA-PEI aerogel exhibits significant reusability, retaining removal efficiencies of 53 % for MB and 48 % for Cu(II) after four sorption-desorption cycles. Consequently, the synthesized ATP/CCS/SA-PEI aerogel demonstrates considerable potential for the remediation of complex pollutants in wastewater, indicating its applicability across diverse industrial sectors. © 2025 Elsevier B.V.

关键词： Crosslinking

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A Cl-rich MXene interphase for a dendrite-free lithium metal anode

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Journal of Power Sources 2025年 647卷

作者： Gao, Qian-Yu Tian, Ya-Wen Zeng, Zhuo-Hang Wei, Mei-Tong Xia, Zi-Shuo Yang, Qing-Qing Deng, Zhao Li, Yu Su, Bao-Lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China University of Namur 61 rue de Bruxelles NamurB-5000 Belgium

Lithium metal batteries (LMBs) are attracting increasing attention due to their high theoretical specific capacity. However, the dendrites and dead lithium (Li) formed on Li metal anodes (LMAs) seriously reduce the safety and cycling life of LMBs, hindering the further development. Here, Cl-rich MXene artificial solid electrolyte interphase (ASEI) is coated on the surface of LMAs (M-Li) to improve the cycling performance. The density functional theory (DFT) calculation indicates that the abundant Cl functional group provides sufficient lithiophilic sites, inducing uniform deposition and stripping of Li. In addition, Cl-rich MXene also functions in the formation of halide-rich SEI to regulate the transport of Li ions (Li+). The symmetric battery based on the M-Li anode exhibits low overpotential of 9 mV during the long cycling. The LFP//M-Li full battery maintains a high coulomb efficiency of more than 95 % at the high current density of 5 C. This work suggests that Cl-rich MXene based provides a promising strategy for dendrite-free LMAs in LMBs. © 2025 Elsevier B.V.

关键词： Lithium-ion batteries

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Fabrication of Titanium Diboride-Cu Composite by Self-High Temperature synthesis plus Quick Press

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Journal of materials Science & technology 2005年第6期21卷 841-844页

作者： Jinyong ZHANG+, Zhengyi FU and Weimin WANGstate key lab.of advanced technology for materials synthesis and processing, Wuhan University of technology, Wuhan 430070, China State Key Lab. of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Titanium diboride based composites, good candidates for contact materials, have high hardness, Young＇s modulus, high temperature stability, and excellent electrical, thermal conductivity. However a good interface of TiB2/Cu is very difficult to achieve for oxidation of TiB2. To avoid this oxidation behavior, the in situ combusting synthesis technology, SHS, was used to prepare TiB2/Cu composite. The characters of Ti-B-xCu SHS were studied in detail, such as combustion temperature, products phases and grain size. Based on the experimental results a proper technology way of self-high temperature synthesis plus quick press （SHS/QP） was determined and compact TiB2/Cu composites with relative density over than 97 pct of the theoretical were fabricated by this method. The properties and microstructures of these TiB2 based composites were also investigated.

关键词： Self-high temperature synthesis （SHS） TiB2 Composite

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Local structural origin of relaxor antiferroelectric behavior in NaNbO3-based ceramics

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Chemical Engineering Journal 2025年 514卷

作者： Meng, Xiangyu Yuan, Liran Li, Dongxu Wang, Pengbin Guo, Qinghu Gan, Xiaoyan Yao, Zhonghua Liu, Hanxing Wu, Jinsong Zhang, Shujun Hao, Hua State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory Foshan528200 China Nanostructure Research Center Wuhan University of Technology Wuhan430070 China Institute for Superconducting and Electronic Materials Faculty of Engineering and Information Sciences University of Wollongong WollongongNSW2500 Australia

Relaxor-antiferroelectrics (relaxor-AFEs), known for their double polarization–electric field (P-E) hysteresis loops and relaxor characteristics, exhibit outstanding energy storage performance compared to other dielectric materials. However, the origins of their antiferroelectric-like behavior and relaxor features remain unclear due to their complex local structure. In this study, we designed relaxor-AFEs with a high degree of relaxor component and stable antiferroelectric behavior. The recoverable energy density (Wrec) of up to 4.6J/cm3 and energy efficiency of ∼ 79 % were achieved in a 0.76NaNbO3-0.16Na0.5Bi0.5TiO3-0.08CaTiO3 ceramic, demonstrating excellent thermal and frequency stability. The multiphase local polarization configuration was confirmed by atomic-resolution annular dark-field scanning transmission electron microscopy (ADF STEM). Additionally, integrated differential phase contrast (iDPC) images revealed an enhanced antiferrodistortion (AFD) induced by incorporating component with low tolerance factor, contributing to stable antiferroelectric behavior. The relationship between chemical heterogeneity, polarization configuration and energy storage performance was systematically established. This work provides insights into the structure origin and underlying mechanisms for relaxor-AFE performance, with potential implications to guide the development of advanced energy-storage dielectric materials. © 2025 Elsevier B.V.

关键词： Antiferroelectric materials

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