检索结果-南通市图书馆

Study on Ti/BDD Film Electrode with Ta Interlayer

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2012年第S1期41卷 247-249页

作者： Xin Yonglei Liu Feng Wang Juntao Li Xiangbo luoyang ship mat res inst Sci & Technol Marine Corros & Protect Lab Qingdao 266101 Peoples R China

Boron doped diamond(BDD)thin films have been deposited on Ti substrate with Ta interlayer by MP-CVD(microwave plasma chemical vapor deposition),and Ta interlayer was deposited by magnetron *** physical and electrochemical behaviors of the Ti/Ta/BDD electrode and its application in electrochemical oxidation of wastewater containing 2,4-dichlorophenol were *** spectroscopy and field emission scanning electron microscopy(FESEM)demonstrates that the films obtained exhibit well-defined diamond *** spectroscopy shows no TiC in the BDD film with Ta *** measurement shows the BDD electrode behaves low background current and wide working potential window up to 4 ***,the removal efficiency of chemical oxygen demand(COD)of the BDD electrodes were evaluated by the electrochemical oxidation of 2,4-dichlorophenol.

关键词： microwave plasma chemical vapor deposition boron doped diamond Ta wastewater treatment electrochemical oxidation

Bioinspired Ultrasensitive Flexible Strain Sensors for Real-Time Wireless Detection of Liquid Leakage

在线全文

学校读者我要写书评

暂无评论

NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： Zhou, Weilong Du, Yu Chen, Yingying Zhang, Congyuan Ning, Xiaowei Xie, Heng Wu, Ting Hu, Jinlian Qu, Jinping Huazhong Univ Sci & Technol Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist EducHubei Key Lab Mat Chem & Serv Failure Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol Hubei Engn Res Ctr Biomat & Med Protect Mat Sch Chem & Chem Engn Wuhan 430074 Peoples R China Wuhan inst Technol Sch Mat Sci & Engn Wuhan 430205 Peoples R China City Univ Hong Kong Dept Biomed Engn Hong Kong 999077 Peoples R China

Micro-extrusion compression molding and surface modification were proposed for the mass fabrication of a superhydrophobic thermoplastic polyurethane sensor (TCGS).Inspired by scorpions, TCGS features Archimedean spiral crack arrays and micropores, achieving 218.13 sensitivity at 2% strain, a 4300% increase, and over 5000 usage cycles of *** robust superhydrophobicity of TCGS improves sensitivity and stability for detecting small-scale liquid leakage, allowing precise monitoring across various sizes and compositions while providing early warnings in various scenarios. Liquid leakage of pipeline networks not only results in considerable resource wastage but also leads to environmental pollution and ecological imbalance. In response to this global issue, a bioinspired superhydrophobic thermoplastic polyurethane/carbon nanotubes/graphene nanosheets flexible strain sensor (TCGS) has been developed using a combination of micro-extrusion compression molding and surface modification for real-time wireless detection of liquid leakage. The TCGS utilizes the synergistic effects of Archimedean spiral crack arrays and micropores, which are inspired by the remarkable sensory capabilities of scorpions. This design achieves a sensitivity of 218.13 at a strain of 2%, which is an increase of 4300%. Additionally, it demonstrates exceptional durability by withstanding over 5000 usage cycles. The robust superhydrophobicity of the TCGS significantly enhances sensitivity and stability in detecting small-scale liquid leakage, enabling precise monitoring of liquid leakage across a wide range of sizes, velocities, and compositions while issuing prompt alerts. This provides critical early warnings for both industrial pipelines and potential liquid leakage scenarios in everyday life. The development and utilization of bioinspired ultrasensitive flexible strain sensors offer an innovative and effective solution for the early wireless detection of liquid leakage.

关键词： Thermoplastic polyurethane Bioinspired Cracks Liquid leakage Flexible strain sensor

Deciphering Water Oxidation Catalysts: The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： An, Li Li, Jianyi Sun, Yuanmiao Zhu, Jiamin Seow, Justin Zhu Yeow Zhang, Hong Zhang, Nan Xi, Pinxian Xu, Zhichuan J. Yan, Chun-Hua Lanzhou Univ Frontiers Sci Ctr Rare Isotopes Key Lab Nonferrous Met Chem & Resources Utilizat G State Key Lab Appl Organ ChemColl Chem & Chem Eng Lanzhou 730000 Peoples R China Nanyang Technol Univ Sch Mat Sci & Engn Singapore 639798 Singapore Chinese Acad Sci Fac Mat Sci & Energy Engn Shenzhen Inst Adv Technol Inst Technol Carbon Neutral Shenzhen 518055 Peoples R China Yunnan Univ Natl Ctr Int Res Photoelect & Energy Mat Electron Microscopy Ctr Sch Mat & EnergyKey Lab Electromagnet Mat & Devic Kunming 650091 Peoples R China Baotou res inst Rare Earths State Key Lab Baiyunobo Rare Earth Resource Res & Baotou 014030 Peoples R China Peking Univ Beijing Natl Lab Mol Sci State Key Lab Rare Earth Mat Chem & Applicat PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Chem Beijing 100871 Peoples R China

Demonstrate that the key factor to determine the activity of reconstructed surfaces is the surface chemistry, instead of reconstruction degree using the popular perovskite LaNi1-xFexO3 oxides as model *** content can influence both the surface reconstruction degree, the activation degree, and the activity of reconstructed *** oxygen evolution reaction activity of reconstructed catalysts is primarily governed by the chemistry of the reconstructed surface species. Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution reaction. The surface reconstruction has been widely observed in perovskite catalysts, and the reconstruction degree has been often correlated with the activity enhancement. Here, a systematic study on the roles of Fe substitution in activation of perovskite LaNiO3 is reported. The substituting Fe content influences both current change tendency and surface reconstruction degree. LaNi0.9Fe0.1O3 is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi1-xFexO3 (x = 0.00, 0.10, 0.25, 0.50, 0.75, 1.00) series. The reconstructed LaNi0.9Fe0.1O3 shows a higher intrinsic activity than most reported NiFe-based catalysts. Besides, density functional theory calculations reveal that Fe substitution can lower the O 2p level, which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term stability. Furthermore, it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction degree. The effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface reconstruction. This finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

Direct Photolithography of WO_x Nanoparticles for High-resolution Non-Emissive Displays

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

NANO-MICRO LETTERS 2025年第1期17卷 1-13页

作者： Gu, Chang Yang, Guojian Wang, Wenxuan Shi, Aiyan Fang, Wenjuan Qian, Lei Hu, Xiaofei Zhang, Ting Xiang, Chaoyu Zhang, Yu-Mo Chinese Acad Sci Ningbo Inst Mat Technol & Engn Lab Optoelect Informat Technol & Devices Ningbo 315201 Peoples R China Qianwan inst CNITECH Hangzhou Bay Lab Adv Nanooptoelectron Mat & Device Ningbo 315336 Peoples R China Zhejiang Univ Innovat Ctr Yangtze River Delta Smart Mat Architecture Res Lab Jiaxing 314100 Peoples R China Univ Sci & Technol China Hefei 230026 Peoples R China Jilin Univ Coll Chem State Key Lab Supramol Struct & Mat Changchun 130012 Peoples R China

High-resolution non-emissive displays based on electrochromic tungsten oxides (WOx) are crucial for future near-eye virtual/augmented reality interactions, given their impressive attributes such as high environmental stability, ideal outdoor readability, and low energy consumption. However, the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron scale. Here, we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand exchange. This strategy enabled us to achieve ultra-high resolution efficiently (line width m, the best resolution for reported inorganic electrochromic materials). Additionally, the resulting device exhibited impressive electrochromic performance, such as fast response ( 3600 cycles), as well as promising applications in electronic logos, pixelated displays, flexible electronics, etc. The success and advancements presented here are expected to inspire and accelerate research and development (R&D) in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays

Preliminary Study on Cavity Characteristics of Cold Sprayed Thickness Coating

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

稀有金属材料与工程 2012年第S1期41卷 375-379页

作者： Huang Guosheng Li Xiangbo Gu Deming Xing Lukuo Harbin inst Technol Sch Sci Harbin 150001 Peoples R China luoyang ship mat res inst Sci & Technol Marine Corros & Protect Lab Qingdao 266101 Peoples R China

In this article,the absence of self-replenishing of cold spray is studied by examining the thick coating deposited around the pre-drilled microsize *** copper coating was deposited around the microsize holes(about 200 and 500μm) using cold spraying methods on copper substrate,the cross-section of cavity around the hole were observed with SEM to investigate the characteristics of *** methods were also used to investigate the original formation reason of the *** results indicate:the original formation reason of cavity is that particles are too closed when impact onto the *** repellant force between the particles perpendicular to the impaction direction will lead to porosity if the particles are too *** lower flatten ratio occurred for succeeding particle if the particles are too close at the same point because the momentum energy convert to the former particle's deformation.A high probability of above two phenomenon resulting from high powder feeding rate will form the original *** relative wider cavity,coating can be deposited in the bottom,while in the relative narrow cavity,coating can not be *** thickness of the coating in the cavity is much thinner than coating around the *** cavity grow larger and larger on pre-drilled holes just as the regime effect of cold spray of fixed location deposition.

关键词： restoration cold spray copper alloy cavity

Effect　of　Microadditional　Cerium　on　Annealing　Embrittlement　of　Fe－B－Si　Amorphous　Alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 1996年第1期14卷 30-35页

作者：曹兴国车晓舟戴礼智 luoyang inst TECHNOL DEPT MAT ENGNLUOYANG 4711039PEOPLES R CHINA BEIJING CENT IRON & STEEL res inst BEIJING 100081PEOPLES R CHINA

it is reported in literature those the effect of microadditional cerium on annealing embrittlement of Fe-B-Si amorphous alloy is negligible even *** test result of present paper shows that the annealing embrittlement temperature of Fe76B15Si9 can be increased by 80℃after cerium has been *** cause of the divergence of the test result from those in the literature was *** condition with the positive effect of microadditional cerium on annealing embrittlement temperature of Fe-B-Si amorphous alloy was *** reason why microadditional cerium may be ineffective even negative on annealing embrittlement temperature was preliminarily elucidated.

关键词： Microadditional cerium Fe-B-Si amorphous alloy annealing embrittlement

Dual-Donor-Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

在线全文

学校读者我要写书评

暂无评论

NANO-MICRO LETTERS 2025年第1期17卷 1-13页

作者： Liang, Anhai Sun, Yuqing Chung, Sein Shin, Jiyeong Sun, Kangbo Zhu, Chaofeng Zhao, Jingjing Zhao, Zhenmin Zhong, Yufei Zhang, Guangye Cho, Kilwon Kan, Zhipeng Guangxi Univ Inst Sci & Technol Carbon Peak & Neutral Ctr Nanoenergy Res Sch Phys Sci & Technol Nanning 530004 Peoples R China Pohang Univ Sci & Technol Dept Chem Engn Pohang 37673 South Korea Shenzhen Technol Univ Coll New Mat & New Energies Shenzhen 518118 Peoples R China NingboTech Univ Zhejiang Engn Res Ctr Fabricat & Applicat Adv Phot Sch Mat Sci & Engn Ningbo 315100 Peoples R China State Key Lab Featured Met mat & Life Cycle Safety Nanning 530004 Peoples R China

By modulating the crystalline properties of the active layer with dual donors, the efficiency of organic solar cells reaches 19.23%.The introduction of PTzBI-dF suppresses the accumulation of traps and charge recombination, allowing ternary devices to maintain 82% of their initial power conversion efficiency (PCE) after illumination for 800 *** dual-donor strategy for modulating the crystallinity of the active layer is applicable to a variety of Y6 derivatives, and the increase in PCE exceeds 1%. Trap-assisted charge recombination is one of the primary limitations of restricting the performance of organic solar cells. However, effectively reducing the presence of traps in the photoactive layer remains challenging. Herein, wide bandgap polymer donor PTzBI-dF is demonstrated as an effective modulator for enhancing the crystallinity of the bulk heterojunction active layers composed of D18 derivatives blended with Y6, leading to dense and ordered molecular packings, and thus, improves photoluminescence quenching properties. As a result, the photovoltaic devices exhibit reduced trap-assisted charge recombination losses, achieving an optimized power conversion efficiency of over 19%. Besides the efficiency enhancement, the devices comprised of PTzBI-dF as a third component simultaneously attain decreased current leakage, improved charge carrier mobilities, and suppressed bimolecular charge recombination, leading to reduced energy losses. The advanced crystalline structures induced by PTzBI-dF and its characteristics, such as well-aligned energy level, and complementary absorption spectra, are ascribed to the promising performance improvements. Our findings suggest that donor phase engineering is a feasible approach to tuning the molecular packings in the active layer, providing guidelines for designing effective morphology modulators for high-performance organic solar cells.

关键词： Trap-assisted charge recombination Photoluminescence Miscibility Current leakage Power conversion efficiency

Dispersion of multiwalled carbon nanotubes in aluminum powders

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2009年第2期28卷 175-180页

作者： Deng Chunfeng Zhang Peng Ma Yanxia Zhang Xuexi Wang Dezun Luoyan ship mat res inst Luoyan 471039 Peoples R China Harbin inst Technol Sch Mat Sci & Engn Harbin 150001 Peoples R China Harbin inst Technol Sch Mat Sci & Engn Weihai 264209 Peoples R China

Multiwalled carbon nanotubes (MWNTs) were treated with the reflux within the concentrated nitric acid for 0-25 h to purify and disperse the tangled MWNTs. The effect of reflux time on the morphology and the weight loss of MWNTs were investigated. Meanwhile,the dispersion of MWNTs with 0-2.0 wt.% in 2024Al powders using mechanical stirring with an assisting ultrasonic shaker in ethanol was also studied. The results show that the reflux time markedly affects the morphology of MWNTs. The weight loss of MWNTs i...

关键词： metal matrix composite powder processing reflux treatment carbon nanotubes (CNTs)

Efficient and Stable Photoassisted Lithium-Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

在线全文

学校读者我要写书评

暂无评论

NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： Ma, Zelin Wang, Shiyao Ma, Zhuangzhuang Li, Juan Zhao, Luomeng Li, Zhihuan Wang, Shiyuan Shuang, Yazhou Wang, Jiulong Wang, Fang Xia, Weiwei Jian, Jie He, Yibo Wang, Junjie Guo, Pengfei Wang, Hongqiang Northwestern Polytech Univ Ctr Nano Energy Mat State Key Lab Solidificat Proc Sch Mat Sci & Engn Xian 710072 Peoples R China NPU Shaanxi Joint Lab Graphene Xian 710072 Peoples R China Northwestern Polytech Univ Sch Mat Sci State Key Lab Solidificat Proc Xian 710072 Peoples R China Northwestern Polytech Univ Engn Dept Xian 710072 Peoples R China Northwestern Polytech Univ Ctr Adv Lubricat & Seal Mat Sch Mat Sci & Engn State Key Lab Solidificat Proc Xian 710072 Peoples R China Northwestern Polytech Univ Shenzhen Res & Dev Inst Shenzhen 518063 Peoples R China Shaanxi Normal Univ Key Lab Appl Surface & Colloid Chem Shaanxi Engn Lab Adv Energy Technol Shaanxi Key Lab Adv Energy DevicesSch Mat Sci & E Xian 710119 Peoples R China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries (PLIBs), while there is always a request on fast carrier transport in electrochemical active photocathodes. Present work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic nanocrystals. When employed in PLIBs, it was found effective for synchronously enhanced photocharge separation and transport in light charging process. Additionally, experimental photon spectroscopy, finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO2, as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky contact. Benefiting from these merits, several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set, including the capacity of 276 mAh g(-1 ) at 0.2 A g(-1 )under illumination, photoconversion efficiency of 1.276% at 3 A g(-1 ), less capacity and Columbic efficiency loss even through 200 cycles. These results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals