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SSRN 2022年

作者： Sun, Xueping Wei, Peng He, Zhimin Cheng, Fangyuan Tang, Lin Li, Qing Han, Jiantao He, Jianhua The Institute for Advanced Studies Wuhan University Hubei Wuhan430072 China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China Hubei Yangtze Memory Laboratories Wuhan430205 China

To date, it is urgent yet challenging to develop highly active and cost-effective bifunctional electrocatalysts towards water splitting. Among various non-precious metal candidates, transition metal phosphides (TMPs) have been of concern due to their abundant reserves, outstanding conductivity and excellent electrocatalytic activity. However, the current TMPs synthesis processes are always complicated and dangerous due to the commonly use of toxic and flammable phosphorus sources. Herein, we propose a general and scalable synthetic strategy to prepare a series of nanosized transition metal phosphide encapsulated in nitrogen-phosphorus co-doped carbon (TMP@NPC) catalysts by using green and cheap adenosine triphosphate (ATP) as the new phosphorus source. Benefiting from the in situ derived N, P co-doped carbon layers and nanoscale dimensions, all TMP@NPC catalysts exhibit good HER and OER performance. Especially, the CoP@NPC displays the lowest overpotentials of 184.35 mV and 303 mV at 10 mA cm-2 toward HER and OER in alkaline electrolyte, which also exhibits outstanding stability (over 50 hours at 10 mA cm-2) in both reactions. Moreover, CoP@NPC acts as both cathode and anode, which also exhibits good water splitting performance. This work not only constructs efficient bifunctional catalysts, but also broadens the green general synthesis method of nanosized TMPs. © 2022, The Authors. All rights reserved.

关键词： Electrocatalysts

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Unveiling a giant electrocaloric effect at low electric fields through continuous phase transition design

Advanced Powder Materials

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advanced Powder materials 2024年第5期3卷 33-45页

作者： Yunyao Huang Leiyang Zhang Pingji Ge Ruiyi Jing Wenjing Shi Chao Li Xiang Niu Vladimir Shur Haibo Zhang Shengguo Lu Yintang Yang Dawei Wang Xiaoqin Ke Li Jin Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an710049China School of Physics MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Jiaotong UniversityXi’an710049China Instrument Analysis Center Xi’an Jiaotong UniversityXi’an10049China Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices School of Materials and EnergyGuangdong University of TechnologyGuangzhou510006China School of Natural Sciences and Mathematics Ural Federal UniversityEkaterinburg20000Russia School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan430074China School of Microelectronics Xidian UniversityXi’an710071China Functional Materials and Acousto-Optic Instruments Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin150080China

The reported electrocaloric(EC)effect in ferroelectrics is poised for application in the next generation of solidstate refrigeration technology,exhibiting substantial developmental *** study introduces a novel and efficient EC effect strategy in(1-x)Pb(Lu_(1/2)Nb_(1/2))O_(3)-xPbTiO_(3)(PLN-xPT)ceramics for low electric-fielddriven ***-field simulations provide fundamental insights into thermally induced continuous phase transitions,guiding subsequent experimental investigations.A comprehensive composition/temperature-driven phase evolution diagram is constructed,elucidating the sequential transformation from ferroelectric(FE)to antiferroelectric(AFE)and finally to paraelectric(PE)phases for x=0.10-0.18 *** measurements of EC performance highlight x=0.16 as an outstanding performer,exhibiting remarkable properties,including an adiabatic temperature change(ΔT)of 3.03 K,EC strength(ΔT/ΔE)of 0.08 K cm kV-1,and a temperature span(Tspan)of 31℃.The superior EC effect performance is attributed to the temperature-induced FE to AFE transition at low electric fields and diffusion phase transition behavior contributing to the wide *** work provides valuable insights into developing high-performance EC effect across broad temperature ranges through the strategic design of continuous phase transitions,offering a simplified and economical approach for advancing ecofriendly and efficient solid-state cooling technologies.

关键词： PbPb(Lu_(1/2)Nb_(1/2))O_(3)-xPbTiO_(3)(PLN-PT) Electrocaloric effect(ECE) Phase transition Low electric field Antiferroelectric

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Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

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Science China materials 2020年第11期63卷 2215-2227页

作者： Huogen Yu Jiachao Xu Duoduo Gao Jiajie Fan Jiaguo Yu Department of Chemistry School of ChemistryChemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Developing efficient,stable,and low-cost novel electron-cocatalysts is crucial for photocatalytic hydrogen evolution ***,amorphous Ni-P alloy particles were successfully modified onto g-C3N4 to construct the Ni-P/g-C3N4 photocatalyst through a simple and green triethanolamine(TEOA)-mediated photodeposition *** was found that the TEOA could serve as an excellent complexing agent to coordinate with Ni2+to form[Ni(TEOA)]^2+complex,which can promote the rapid and effective deposition of amorphous Ni-P alloy on the g-C3N4 *** tests suggest that the hydrogen-evolution performance of gC3N4 can be greatly promoted through integrating amorphous Ni-P ***,the Ni-P/g-C3N4(5 wt%)exhibits the superior H2-generation activity(118.2μmol h^-1g^-1),which is almost 35.8 times that of bare ***,the amorphous Ni-P alloy cocatalyst can also serve as the general hydrogen-production cocatalyst to greatly enhance the photocatalytic performance of traditional semiconductor materials such as Ti O2 and Cd *** on the present results,the mechanism of the amorphous Ni-P alloy as the high-efficiency electron transfer medium was proposed for the boosted H2-generation *** present facile route may broaden the horizons for the efficient development of highly active cocatalysts in photocatalytic field.

关键词： photocatalysis H2evolution g-C3N4 amorphous NiP alloy photodeposition

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Gas sensing selectivity of oxygen-regulated SnO2 films with different microstructure and texture

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Journal of materials Science & technology 2019年第10期35卷 2232-2237页

作者： Ruiwu Li Yanwen Zhou Maolin Sun Zhen Gong Yuanyuan Guo Xitao Yin Fayu Wu Wutong Ding School of Material Science and Metallurgy University of Science and Technology LiaoningAnshan114051China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou730050China

The selectivity of gas sensing materials is increasingly important for their applications. The oxygenregulated SnO2 films with(110) and(101) preferred orientation were obtained through magnetron sputtering, followed by annealing treatment. Their micro-structure, surface morphology and gas response were investigated by advanced structural characterization and property measurement. The results showed that the as-prepared(110)-oriented SnO2 film was oxygen-rich and had more adsorption sites while the as-prepared(101)-oriented SnO2 film was oxygen-poor and more sensitive to de-oxidation.H2 gas sensitivity, response speed, selectivity between H2 and CO of the(110)-orientated SnO2 film was superior to that of the(101)-orientated SnO2 film. After treated at high temperature and high vacuum,the reduction of gas-sensing properties of the annealed(110) SnO2 film was much more than that of the annealed(101) SnO2 film. The lattice oxygen was responsible for the difference in gas-sensing response between(110) and(101)-oriented SnO2 films under oxygen regulation. This work indicated the gassensing selectivity of the different crystal planes in SnO2 film, providing a significant reference for design and extension of the related materials.

关键词： Gas sensor SnO2 Oxygen regulation Preferred orientation H2 selectivity

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Nacre-Inspired Chitosan/CaCO3 Films with High Transparency and Underwater Superoleophobic Property for Efficient Oil/Water Separation

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Langmuir : the ACS journal of surfaces and colloids 2025年第25期41卷 2025 Jun 13页

作者： Tianmeng Ye Yulan Huang Qi Li Laichao Fu Mengqiu Wang Xiaokang Huang Shuo Liu Hang Ping Yidi Li G Yang State Key Laboratory of Precision Blasting Jianghan University Wuhan 430056 P. R. China. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China.

Numerous natural architectures achieve multifunctionality through mild formation processes. Natural nacre is composed of about 90 wt % calcium carbonate aragonite flakes and 5 wt % chitin, exhibiting excellent mechanical properties, optical transmittance, and underwater superoleophobicity. In this work, a nacre-inspired biomineralized film with high transparency and mechanically robust underwater superoleophobicity was synthesized through Mg-PAA coordinated regulation under ambient conditions. The nacre-inspired film has light transmittance (exceeding 80%), hardness (1.71 ± 0.08 GPa), Young's modulus (40.9 ± 0.3 GPa), and contact angle of underwater-oil droplets (151.2° ± 1.8°) comparable to natural nacre. Notably, this substrate-independent material can be directly mineralized on diverse surfaces, including plastics, glass, and polymer meshes, while maintaining efficient oil-water separation capability. By deconstructing the multiscale structure of biomaterials, this study establishes a novel paradigm for fabricating multifunctional composites through environmentally benign processes.

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Bifunctional Dimethyldichlorosilane Assisted Air-Processed Perovskite Solar Cell with Enhanced Stability and Low Voltage Loss

SSRN

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SSRN 2022年

作者： Zhou, Peng Lu, Shaojuan Mo, Yanping Cheng, Jiahao Jiao, Chuanjia Zhang, Xiao-Li Li, Wangnan Liang, Guijie Wang, Jingyang Huang, Fuzhi Cheng, Yi-Bing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Hubei Institute of Aerospace Chemotechnology Xiangyang441003 China Hubei key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science Xiangyang441053 China School of Materials Science and Engineering Zhengzhou University Henan Province 450001 China Hubei Longzhong Laboratory Xiangyang441000 China Solar Hydrogen Production Lab Foshan Xianhu Laboratory of the Advanced Energy Science Technology Guangdong Laboratory Foshan China

Perovskite solar cells (PSCs) attract great interest due to high-efficiency and low-cost. However, perovskite materials are sensitive to moisture, causing it cannot be prepared in air, which increase the manufactory cost. To address it, we employ dimethyldichlorosilane (DMDCS) to passivate the grain boundaries and surfaces of MAPbI3 perovskite films, thus inhibiting the erosion of water. Then the preparation of highly efficient PSCs in air atmosphere is realized. The passivation mechanism of DMDCS on the perovskite film and interface is analyzed via investigating photo-excited carrier mobility and ultrafast transient adsorption spectroscopy (TAS). The results of TAS exhibit an improvement of charge carrier diffusion with an enhanced lifetime from 7.62 ps to 11.22 ps by the precursor doping. The charge carrier extraction at the interface is also greatly promoted with the decreased decay time from 0.29 ns to 0.16 ns by surface passivation, consistent well with the carrier mobility via space charge limited current (SCLC). The modified devices demonstrate an excellent efficiency of 20.69%, with a fill factor exceeding 80%. The optimized devices exhibit an excellent long-term environmental stability, retaining more than 80% of the initial efficiency after 1000 h in ambient with a relative humidity of 40 RH % without encapsulation. © 2022, The Authors. All rights reserved.

关键词： Perovskite solar cells

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Tuning CoPi stability in electrochemical water oxidation via surface modification with an organic ligand shell

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International Journal of Hydrogen Energy 2024年 76卷 141-151页

作者： Khattak, Zafar A.K. Younus, Hussein A. Ahmad, Nazir Alomar, Muneerah Ullah, Habib Al-Abri, Mohammed Al-Hajri, Rashid Kao, Chih-Ming Verpoort, Francis State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Nanotechnology Research Center Sultan Qaboos University P.O Box 33 Al Khould MuscatPC 123 Oman 6 Miklukho-Maklaya Str. Moscow117198 Russia Department of Chemistry Government College University Lahore Lahore54000 Pakistan Department of Chemistry University of Buner Swari Khyber Pakhtunkhwa Buner Pakistan Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Department of Materials Science and Engineering Chungnam National University Daejeon34134 Korea Republic of Chemistry Department Faculty of Science Fayoum University Fayoum63514 Egypt Department of Chemical and Petroleum Engineering College of Engineering Sultan Qaboos University P.O Box 33 Al Khould MuscatPC 123 Oman Institute of Environmental Engineering National Sun Yat-Sen University Kaohsiung Taiwan

In electrocatalytic applications, catalyst interface crucially influences electrochemical activity and selectivity, balancing adsorption, desorption, and transport of intermediates and electrons. Capitalizing on this fact, this study unveils a novel approach to enhance CoOx surfaces, a promising electrocatalyst for water oxidation, through organic shell functionalization via electrodeposition. Utilizing a dinuclear cobalt complex 1, resembling CoOx's structure, we crafted a modified film exhibiting remarkable stability. This film consistently delivered a current density of 2.0 mA/cm2 for oxygen evolution at 1.5 V vs. NHE, sustaining over 25 h under neutral conditions with only a minimal 5% activity reduction. Conversely, the standard CoPi catalyst underwent rapid deterioration, losing about 40% of its initial catalytic current in just 14 h. Further investigations revealed that the organic shell effectively reduces catalyst dissolution, in contrast to the severe dissolution of CoPi, directly impacting its catalytic activity. This approach offers a straightforward means to functionalize various nanostructured materials, potentially enhancing their electrochemical activities and stabilities. © 2024 Hydrogen Energy Publications LLC

关键词： Dissolution

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Enhanced CoCrFeNi(TiC) 0.2 high-entropy alloy by thermodynamic treatment

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materials Today Communications 2025年 47卷

作者： Shiqing Liang Bingtian Tu Peiyao Li Xiaohong Chen Jiaqi Li Jun Li Qinqin Wei Qiang Shen Hubei Longzhong Laboratory Xiangyang Hubei 441000 China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Refractories Wuhan University of Science and Technology Wuhan 430081 China

CoCrFeNi-based high-entropy alloys exhibit superior strength and toughness properties compared to conventional alloys with promising aerospace structural applications. However, the strength of the as-cast CoCrFeNi(TiC) 0.2 alloy remains low, limiting its practical application as a high-strength structural material. In this study, we enhance the CoCrFeNi(TiC) 0.2 alloy by hot rolling and annealing, which promotes the ultrafine carbide precipitation, partial recrystallization of the alloy matrix, and residual high-density dislocations. The second-phase strengthening of carbide precipitation, fine-grain strengthening of alloy matrix, and dislocation strengthening jointly improve the yield strength. The CoCrFeNi(TiC) 0.2 alloy subjected to 50 % hot rolling followed by thermomechanical treatment at 700°C for 1 h demonstrates excellent mechanical properties, exhibiting a yield strength of 865 MPa, an ultimate tensile strength of 1047 MPa, and a uniform elongation of 6.8 %. This study provides a theoretical guidance for the composition and technological design of high performance alloys.

关键词： Tensile strength

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Pvdf/Carbon Directional Microchannels-Enhanced Ion Diode-Like Hydrogel-Based Pressure Sensors

SSRN

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SSRN 2025年

作者： Wen, Xuezhong Zhang, Hongjian Eom, Taeuk Jeong, Chang Kyu Zhang, Yong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Center for Smart Materials and Device Integration Wuhan University of Technology Wuhan430070 China Department of JBNU-KIST Industry-Academia Convergence Research Jeonbuk National University Jeonbuk Jeonju54896 Korea Republic of Division of Advanced Materials Engineering Jeonbuk National University Jeonbuk Jeonju54896 Korea Republic of Department of Energy Storage/Conversion Engineering of Graduate School Hydrogen and Fuel Cell Research Center Jeonbuk National University Jeonbuk Jeonju54896 Korea Republic of

Hydrogels are promising candidates for flexible electronics but are often constrained by narrow pressure-sensing ranges and unstable ion migration. To overcome these limitations, we developed an ionic hydrogel sensor incorporating diode-inspired bipolar architectures (PSSNa/PDACl) and poly(vinylidene fluoride)/carbon directional microchannels (PCDMC). The optimized 5-PCNPC hydrogel exhibits a broad pressure-sensing range (2.3–100 kPa) with a sensitivity of 0.360 mV·kPa−1 (a 35.6% enhancement) and a rectification ratio of 12.9, enabled by PCDMC-guided anisotropic ion transport and rapid stress dissipation (337 ms recovery). With excellent durability over 500 cycles and a power density of 1.17 mW·m−2, the hydrogel sensor demonstrates its potential in practical applications, including a 5×5 touchpad for spatial pressure mapping and real-time monitoring of respiration, swallowing, and locomotion. This study underscores the potential of hydrogel-based sensors with wide-range operability for next-generation wearables and interactive systems. © 2025, The Authors. All rights reserved.

关键词： Flexible electronics

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Electrically reconfigurable heteronuclear dual-atom catalysts

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Nature nanotechnology 2025年 2025 Jun 11页

作者： Ning Han Li-Hua Chen Bao-Lian Su Department of Electrical and Computer Engineering University of Toronto Toronto Ontario Canada. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China. chenlihua@***. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China. bao-lian.su@unamur.be. Laboratory of Inorganic Materials Chemistry (CMI) University of Namur Namur Belgium. bao-lian.su@unamur.be.

Scrutinizing the dynamic reconfiguration mechanism of intermetallic single-atom catalysts reveals the chemical origin of the enhanced electrocatalysis performance. © Springer Nature Limited 2025.

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