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Bifunctional hierarchical NiCoP@FeNi LDH nanosheet array electrocatalyst for industrial-scale high-current-density water splitting

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Journal of Materials Science & Technology 2023年第28期159卷 33-40页

作者： Liming Yang Tao Yang Enhui Wang Xiangtao Yu Kang Wang zhentao du Sheng Cao Kuo-Chih Chou Xinmei Hou Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004China

Aiming to design and prepare non-noble metal electrocatalysts for hydrogen production at high current density(HCD),NiCoP@FeNi LDH hierarchical nanosheets were deposited on nickel foam progressively us-ing a hydrothermal-phosphorization-electrodeposition *** hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),NiCoP@FeNi LDH/NF requires only 195 and 230 mV overpotentials to reach 1000 mA cm−2,*** overall water splitting,only 1.70 V is required at 1000 mA cm−*** is the largest value for non-noble metal-based electrocatalysts reported so far at *** hierarchi-cal structure exhibits good electron transport capability and the porous-macroporous structure enhances the gas release rate,resulting in enhanced hydrogen production at ***,the synergistic effect of NiCoP and FeNi LDH contributes to the adsorption-desorption equilibrium of intermediate radicals dur-ing the reaction process and ultimately enhances the catalytic *** work provides useful direction for industrial-scale hydrogen production applications at HCD.

关键词： High-current-density Overall water splitting Hydrogen evolution reaction Oxygen evolution reaction

High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen Oxidation

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Energy & Environmental Materials 2024年第5期7卷 341-348页

作者： Pan Li Jiang Zhong Yanqing Fu zhentao du Lan Jiang Yi Han Jan Luxa Bing Wu Zdenek Sofer Qiliang Wei Weiyou Yang School of Resources Environment and MaterialsState Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresGuangxi UniversityNanning 530004China Institute of Micro/Nano Materials and Devices Ningbo University of TechnologyNingbo 315211China Department of Inorganic Chemistry University of Chemistry and Technology PragueTechnická516628Prague 6Czech Republic

Anion exchange membrane fuel cell(AEMFC)technology is attracting intensive attention,due to its great potential by using non-precious-metal catalysts(NPMCs)in the cathode and cheap bipolar plate materials in alkaline ***,in such case,the kinetics of hydrogen oxidation reaction(HOR)in the anode is two orders of magnitude sluggish than that of acidic electrolytes,which is recognized as the grand challenge in this ***,we report the rationally designed Ni nanoparticles encapsulated by N-doped graphene layers(Ni@NG)using a facile pyrolysis *** on the density functional theory calculations and electrochemical performance analysis,it is witnessed that the rich Pyridinic-N within the graphene shell optimizes the binding energy of the intermediates,thus enabling the fundamentally enhanced activity for HOR with robust *** a proof of concept,the resultant Ni@NG sample as the anode with a low loading(1.8 mg cm^(-2))in AEMFCs delivers a high peak power density of 500 mW cm^(-2),outperforming all of those of NPMC-based analogs ever reported.

关键词： anion-exchange-membrane fuel cells density functional calculations hydrogen oxidation reaction Ni-based non-precious-metal catalysts pyridinic N-doped graphene

Realizing efficient emission and triple-mode photoluminescence switching in air-stable tin(IV)-based metal halides via antimony doping and rational structural modulation

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Aggregate 2024年第1期5卷 257-269页

作者： Xuefei He Hui Peng Qilin Wei Zhijie Zhou Guolun Zhang zhentao du Jialong Zhao Bingsuo Zou Department of Materials Physics and Chemistry State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresMOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materialsand School of ResourcesEnvironment and MaterialsGuangxi UniversityNanningChina

Recently,many lead-free metal halides with diverse structures and highly efficient emission have been ***,their poor stability and single-mode emission color severely limit their ***,three homologous Sb^(3+)-doped zero-dimensional(0D)air-stable Sn(IV)-based metal halides with different crystal structures were developed by inserting a single organic ligand into SnCl_(4)lattice,which brings different optical *** photoexcitation,(C_(25)H_(22)P)SnC_(l5)@Sb⋅CH_(4O)(Sb^(3+)−1)does not emit light,(C_(25)H_(22)P)_(2)SnC_(l6)@Sb-α(Sb^(3+)−2α)shines bright yellow emission with a photoluminescence quantum yield(PLQY)of 92%,and(C_(25)H_(22)P)_(2)SnC_(l6)@Sb-β(Sb^(3+)−2β)exhibits intense red emission with a PLQY of 78%.The above three compounds show quite different optical properties should be due to their different crystal structures and the lattice ***,Sb^(3+)−1 can be successfully converted into Sb^(3+)−2αunder the treatment of C_(25)H_(22)PCl solution,accompanied by a transition from nonemission to efficient yellow emission,serving as a“turn-on”photoluminescence(PL)***,a reversible structure conversion between Sb^(3+)−2αand Sb^(3+)−2βwas witnessed after dichloromethane or volatilization treatment,accompanied by yellow and red emission ***,a triple-mode tunable PL switching of off-onI-onII can be constructed in Sb^(3+)-doped Sn(IV)-based ***,we demonstrated the as-synthesized compounds in fluorescent anticounterfeiting,information encryption,and optical logic gates.

关键词： information encryption Sb^(3+)-doping Sn(IV)-based metal halides structural modulation triple-mode

Textured CsPbI_(3) nanorods composite fibers for stable high output piezoelectric energy harvester

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eScience 2024年第5期4卷 150-159页

作者： Tao Yang Dengzhou Jia Bing Xu Yongfei Hao Yanglong Hou Kang Wang Enhui Wang zhentao du Sheng Cao Kuo-Chih Chou Xinmei Hou Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110000China School of Materials Shenzhen Campus of Sun Yat-Sen UniversityShenzhen 518107China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China

The utilization of piezoelectric nanogenerator(PENG)based on halide perovskite materials has demonstrated significant promise for energy harvesting ***,the challenge of synthesizing halide perovskite materials with both high output performance and stability using a straightforward process persists as a substantial ***,we present the fabrication of CsPbI_(3) nanorods(NRs)exhibiting highly uniform orientation within polyvinylidene fluoride(PVDF)fibers through a simple texture engineering approach,marking the instance of enhancing PENG performance in this *** resultant composite fibers showcase a short-circuit current density(I_(sc))of 0.78μAcm^(-2) and an open-circuit voltage(V_(oc)) of 81V,representing a 2.5 fold increase compared to the previously reported highest value achieved without the electric poling *** outstanding output performance is ascribed to the orientation of CsPbI_(3) NRs facilitated by texture engineering and dipole poling via the self-polarization ***,the PENG exhibits exceptional thermal and water stability,rendering it suitable for deployment in diverse and challenging environmental *** findings underscore the significant potential of textured CsPbI_(3) NRs composite fibers for powering low-power consumer electronics,including commercial LEDs and electronic watches.

关键词： Texture engineering CsPbI_(3) Piezoelectric nanogenerator Self-polarization Electrospinning

Boosting electroluminescence performance of all solution processed In P based quantum dot light emitting diodes using bilayered inorganic hole injection layers

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Photonics Research 2022年第9期10卷 2133-2139页

作者： QIUYAN LI SHENG CAO PENG YU MEIJING NING KE XING zhentao du BINGSUO ZOU JIALONG ZHAO School of Physical Science and Technology MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and MaterialsGuangxi UniversityNanning 530004China

The development of high-performance In P-based quantum dot light-emitting diodes(QLEDs)has become the current trend in ecofriendly display and lighting ***,compared with Cd-based QLEDs that have already been devoted to industry,the efficiency and stability of In P-based QLEDs still face great *** this work,colloidal Ni Oxand Mg-doped Ni Oxnanocrystals were used to prepare a bilayered hole injection layer(HIL)to replace the classical polystyrene sulfonate(PEDOT:PSS)HIL to construct high-performance In Pbased *** with QLEDs with a single HIL of PEDOT:PSS,the bilayered HIL enables the external quantum efficiencies of the QLEDs to increase from 7.6%to 11.2%,and the T_(95)lifetime(time that the device brightness decreases to 95%of its initial value)under a high brightness of 1000 cd m^(-2)to prolong about 7 *** improved performance of QLEDs is attributed to the bilayered HIL reducing the mismatched potential barrier of hole injection,narrows the potential barrier difference of indium tin oxide(ITO)/hole transport layer interface to promote carrier balance injection,and realizes high-efficiency radiative *** experimental results indicate that the use of bilayered HILs with p-type Ni Oxmight be an efficient method for fabricating high-performance In P-based QLEDs.

关键词： diodes injection performance

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基于大数据视角的惠农e贷智能风控研究

西部金融 2019年第8期 46-49页

作者：杜振涛中国农业银行陕西省分行

本文基于对农行陕西省分行互联网金融产品——惠农e贷分析的基础上,指出风险防控中存在的问题,分析了大数据风控的机遇和挑战,从大数据视角提出构建智能风控的对策。

关键词：大数据惠农e贷智能风控

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移动支付浪潮下惠农支付路径的思考

农银学刊 2019年第1期 66-68页

作者：杜振涛中国农业银行陕西省分行

随着4G、5G、WIFI、NCF等技术日益成熟,智能手机终端的普及,第三方支付、移动支付等场景的拓展,移动支付影响领域逐步扩大,渗透到人们生活的方方面面。而商业银行在县域支付中依然以传统支付手段为主,手机银行、网上银行等支付方式为补... 详细信息

随着4G、5G、WIFI、NCF等技术日益成熟,智能手机终端的普及,第三方支付、移动支付等场景的拓展,移动支付影响领域逐步扩大,渗透到人们生活的方方面面。而商业银行在县域支付中依然以传统支付手段为主,手机银行、网上银行等支付方式为补充,新兴支付方式处于起步阶段。为更好在移动支付浪潮下解决农村金融"最后一公里"问题,本文在陕西惠农支付现状分析的基础上,通过SWOT分析,对惠农支付发展提出了意见和建议。

关键词：移动支付惠农支付 SWOT

Enantio-divergent C–H borylation with two different ligands from a single chiral source

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Science China Chemistry 2025年第1期68卷 226-232页

作者： Rongrong du Senmiao Xu State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences College of Material Chemistry and Chemical Engineering Key Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of Education Hangzhou Normal University University of Chinese Academy of Sciences

Reported here is an iridium-catalyzed enantio-divergent C（sp3）–H borylation of α-gem-dimethyl groups of trifluoromethyl ketone-derived hydrazones to construct a series of acyclic all-carbon quaternary stereocenters with a high level of chiral induction. Two different chiral bidentate boryl ligands from a common chiral source not only can switch the enantioselectivity but also are complementary in terms of the substrate scope.

关键词： asymmetric catalysis C–H borylation all-carbon quaternary stereocenters synthetic methods

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硝酸羟胺的热稳定性评估及热分解机理研究

材料导报 2017年第4期31卷 145-152页

作者：刘建国安振涛张倩杜仕国姚凯王金军械工程学院弹药工程系石家庄050003 军械工程学院弹药保障与安全性评估军队重点实验室石家庄050003 清华大学材料热分析中心北京100084

为评估氧化剂硝酸羟胺的热稳定性,使用标准液体铝皿于3K/min、4K/min、5K/min加热速率下进行热分析。借助非等温DSC曲线的参数值,应用Kissinger法和Ozawa法求得热分解反应的表观活化能和指前因子,根据Zhang-Hu-Xie-Li公式、Hu-Yang-Lian... 详细信息

为评估氧化剂硝酸羟胺的热稳定性,使用标准液体铝皿于3K/min、4K/min、5K/min加热速率下进行热分析。借助非等温DSC曲线的参数值,应用Kissinger法和Ozawa法求得热分解反应的表观活化能和指前因子,根据Zhang-Hu-Xie-Li公式、Hu-Yang-Liang-Xie公式、Hu-Zhao-Gao公式以及Zhao-Hu-Gao公式,计算硝酸羟胺的自加速分解温度和热爆炸临界温度,并对热分解机理函数进行了研究。设计了7条热分解反应路径,采用密度泛函理论B3LYP/6-311++G(d,p)方法对硝酸羟胺的热分解进行了动力学和热力学计算。计算结果表明,硝酸羟胺热分解的自加速分解温度TSADT=370.05K,热爆炸临界温度Tbe0=388.68K,Tbp0=397.54K,热分解最可几机理函数的微分形式为f(α)=17×(1-α)18/17。硝酸羟胺热分解各路径中,动力学优先支持路径Path 6、Path 5、Path 4和Path 1生成NO和NO_2,其次是Path 2、Path 7和Path 3生成N2和N_2O。温度在373K以下时,Path 1′反应无法自发进行,硝酸羟胺无法进行自发的热分解。从热力学的角度来看,硝酸羟胺在370.05K以下储存是安全的。

关键词：硝酸羟胺热分析热稳定性热分解机理密度泛函理论