检索结果-南通市图书馆

Nanostructured Anode materials for Non-aqueous Lithium Ion Hybrid Capacitors

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental materials 2018年第2期1卷 75-87页

作者： Cuiping Han Hongfei Li Ruiying Shi Lei Xu Junqin Li Feiyu Kang Baohua Li Shenzhen Key laboratory of Special functional materials College of Materials and EngineeringShenzhen UniversityShenzhen 518060China Engineering laboratory for Next Generation Power and Energy Storage Batteries Graduate School at ShenzhenTsinghua UniversityShenzhen 518055China School of materials Science and Engineering Tsinghua UniversityBeijing 100084China

The rapid advancement in electronic devices,electric vehicles,and grid storage stations have lead to a high demand for energy storage devices with enhanced power and energy densities as well as extended *** ion hybrid capacitors are constructed with battery-type anodes and capacitor-type cathodes,which enables the direct integration of the high energy from lithium ion batteries and high power and long lifetime from supercapacitors,making lithium ion hybrid capacitor one of the most promising energy storage *** the past two decades,tremendous efforts have been put into the search for suitable battery-type anode materials with improved Faradaic reaction kinetics so that it can match with the fast non-Faradaic charging rate of the capacitive *** review aims to provide an up-to-date and comprehensive summary of the battery-type anode materials for high-performance lithium ion hybrid *** date,a large variety of battery-type anode materials have been explored with smart material design strategies,such as carbonaceous materials,metal oxides,alloys,sulfides,nitirdes,and Mxenes,etc.,which will be discussed in detail.A perspective to the challenges and future developing trends of lithium ion hybrid capacitors is proposed to close.

关键词： battery lithium lifetime

Phosphorus incorporation-induced adsorption behavior modulation for carbon cathodes enables ultrastable and high-energy aqueous Zn-ion hybrid capacitors

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年

作者： Lai Yu Xiaoyue He Rong Liu Guanglin Wan Xinyi Ma Anqiang Pan Liang Shi Genqiang Zhang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Material for Energy ConversionDepartment of Material Science and Engineering University of Science and Technology of China School of materials and Engineering Xinjiang University

The aqueous zinc ions hybrid capacitors(ZHCs) have great potential for future energy storage devices by their high safety and low cost merits, more importantly, it could combine the advantages of batteries and supercapacitors with high energy density and power output, respectively. However, the development of reliable cathodes is still a challenge with the unsatisfactory cycling stability and limited reaction kinetic, severely restricting its further commercial applications. Herein, we present phosphorus functionalized nitrogen-doped hierarchical porous carbon nanosheets(PN-HPCNS), where the P incorporation could effectively enhance the electronic transfer kinetics and ion adsorption capability to achieve superior zinc-ion storage properties. The asprepared PN-HPCNS cathode-based ZHC exhibits a high energy and power density(169.1 Wh kg–1/68 W kg–1, 15,840 W kg–1/30.8 Wh kg–1) and long cycling lifespans more than 20,000 cycles with 92.0% capacity retention. Systematic characterizations coupled with kinetics studies indicate that phosphorus modification is crucial to superior zinc ion storage, enabling PN-HPCNS with favorable reaction kinetics, promoting ion adsorption by providing more active sites. Moreover, the theoretical calculation reveals that the phosphorus modification could enhance the adsorption ability, contributing to the superior ZHCs performance of PN-HPCNS.

关键词：

Low-molecular-weight photoresponsive supramulecular hydrogel based on a dicationic azobenzene-bridged pyridinium hydrogelator

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2019年第3期30卷 707-709页

作者： Si-Tai Zheng Huan-Huan Yin Zhao-Guang Ma Nan-Li Sheng Tian-Guang Zhan Xiao-Yang Yan Jiecheng Cui Li-Juan Liu Kang-Da Zhang Key laboratory of the Ministry of Education for advanced Catalysis materials College of Chemistry and Life Science Zhejiang Normal University Xingzhi College of Zhejiang Normal University

Low-molecular-weight supramolecular hydrogels are of significant attractive soft materials as particular functions can be facilely introduced by the straightforward fabrication of such self-assembled systems. In this study, an azobenzene-bridged dicationic pyridinium salt was synthesized, from which photoresponsive supramolecular hydrogel could be fabricated through the π-π stacking and hydrophobic interactions in the aqueous solution. By taking advantages of the UV-vis light induced E/Z photoisomerization behaviors of the incorporated azobenzene photochromophore, reversible gel-sol transformation of such supramolecular hydrogel could be achieved under the alternating UV-vis irradiation conditions. We believed that this photoresponsive supramolecular hydrogel will be a good supplementary in the creation of intelligent soft material.

关键词： Supramolecular self-assembly Hydrogels Photo-responsiveness Azobenzenes Smart soft materials

Modulating Pd e_(g) orbital occupancy in Pd-Au metallic aerogels for efficient carbon dioxide reduction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第12期87卷 98-104,I0004页

作者： Yao Chen Juan Wang Tingjie Mao Cun Chen Hanjun Li Honggang Huang Hui Fu Feili Lai Jiadong Chen Nan Zhang Tianxi Liu Key laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Laboratory for Nano Energy CompositesJiangnan UniversityWuxi 214122JiangsuChina Key laboratory of Leather of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035ZhejiangChina Department of Chemistry KU LeuvenCelestijnenlaan 200FLeuven 3001Belgium

The electronic structure of electrocatalysts plays a critical role in energy conversion,whereas for an efficient catalyst,it is challenging to modulate the ***,we present a new strategy to modulate the e_(g) orbital occupancy of Pd by constructing composition-controllable Pd-Au metallic aerogels(MAs),optimizing the d-band center of Pd to achieve excellent performance for electrochemical carbon dioxide reduction reaction(CO_(2)RR).Specifically,Pd_(1)Au_(2) MAs achieve almost 100% Faraday efficiency(FE) of CO in the range of-0.40 to-0.80 V *** hydrogen electrode(RHE),as well as the long-term stability,being one of the best Pd-based materials for CO_(2)*** X-ray photoelectron spectroscopy(XPS) results and density functional theory(DFT) calculations demonstrate that the introduction of Au modulates the Pd e_(g) orbital occupancy,which significantly weakens *CO adsorption on Pd,reduces the CO_(2)RR energy barrier and consequently improves the electrocatalytic activity and stability for long-term *** work highlights a new strategy for designing efficient electrocatalysts for CO_(2)RR and beyond.

关键词： Pd Carbon dioxide reduction Alloy Aerogels Orbital occupancy

Electron doping induced semiconductor to metal transitions in ZrSe2 layers via copper atomic intercalation

在线全文

学校读者我要写书评

暂无评论

Nano Research 2018年第9期11卷 4914-4922页

作者： Zahir Muhammad Kejun Mu Haifeng Lv Chuanqiang Wu Zia ur Rehman Muhammad Habib Zhe Sun Xiaojun Wu Li Song National Synchrotron Radiation laboratory CAS Center for Excellence in Nanoscience CAS Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of China Hefei 230029 China CAS Key laboratory of materials for Energy Conservation Synergetic Innovation Centre of Quantum Information & Quantum Physics CAS Center for Excellence in Nanoscience and Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

Atomic intercalation in two-dimensional （2D） layered materials can be used to engineer the electronic structure at the atomic scale and generate tuneable physical and chemical properties which are quite distinct in comparison with the pristine material. Among them, electron-doped engineering induced by intercalation is an efficient route to modulate electronic states in 2D layers. Herein, we demonstrate a semiconducting to metallic phase transition in zirconium diselenide （ZrSe2） single crystals via controllable incorporation of copper （Cu） atoms. Our angle resolved photoemission spectroscopy （ARPES） measurements and first-principles density functional theory （DFT） calculations dearly revealed the emergence of conduction band dispersion at the M/L point of the Brillouin zone due to Cu-induced electron doping in ZrSe2 interlayers. Moreover, electrical measurements in ZrSe2 revealed semiconducting behavior, while the Cu-intercalated ZrSe2 exhibited a linear current-voltage curve with metallic character. The atomic intercalation approach may have high potential for realizing transparent electron-doping systems for many specific 2D-based nanoelectronic applications.

关键词： layered materials phase transition angle resolved photoemission spectroscopy electron doping

Effects of trace calcium and strontium on microstructure and properties of Cu-Cr alloys

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2022年第17期112卷 11-23页

作者： Muzhi Ma Zhu Xiao Xiangpeng Meng Zhou Li Shen Gong Jie Dai Hongyun Jiang Yanbin Jiang Qian Lei Haigen Wei School of materials Science and Engineering Central South UniversityChangsha 410083China Key laboratory of Non-ferrous Metal materials Science and Engineering Ministry of EducationChangsha 410083China Ningbo Boway Alloy material Co. Ltd.Ningbo 315135China State Key laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Zhejiang Tianning Alloy material Co. Ltd.Jinhua 321002China Faculty of materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China

Cu-0.57Cr-0.01Ca and Cu-0.58Cr-0.01Sr(wt.%)alloys were fabricated and processed by thermo-mechanical *** mechanical and electrical properties and microstructure were investigated in detail and compared with those of a Cu-0.57Cr(wt.%)*** results showed that the softening resistance of the Cu-Cr alloy was significantly improved by the additions of Ca and Sr *** with the Cu-Cr alloy,the deformation microstructure of the Cu-Cr-Ca and Cu-Cr-Sr alloys was more difficult to recrystallize at elevated temperatures,and the Cr precipitates in the Cu-Cr-Ca and Cu-Cr-Sr alloys were smaller in size and had an FCC structure at any given aging *** high strengths of the Cu-Cr-Ca and Cu-Cr-Sr alloys were mainly attributed to the dislocation strengthening provided by high-density dislocations and the precipitate strengthening provided by fine Cr ***-principles calculation showed that the segregations of Ca and Sr atoms at interface between Cr precipitates and copper matrix were favorable in *** segregation effectively hindered the growth of Cr precipitates and significantly enhanced the pinning effect on the motion of dislocations and subgrain boundaries,eventually leading to the improvement in the softening resistance of the Cu-Cr alloy.

关键词： Cu-Cr alloy Softening resistance Microstructure Strengthening Segregation

Biochar alleviates apple replant disease by reducing the growth of Fusarium oxysporum and regulating microbial communities

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2024年第3期10卷 657-671页

作者： Yinghao Liu Can Wang Ran Chen Weitao Jiang Yun Li Chengmiao Yin Yanfang Wang Zhiquan Mao College of Chemistry and material Science Shandong Agricultural UniversityTaianShandong 271018China State Key laboratory of Crop Biology/College of Horticultural Science and Engineering Shandong Agricultural UniversityTaianShandong 271018China

Apple replant disease(ARD)negatively affects plant growth and reduces yields in replanted *** this study,biochar was applied to apple replant soil with Fusarium *** aim was to investigate whether biochar could promote plant growth and alleviate apple replant disease by reducing the growth of harmful soil microorganisms,changing soil microbial community structure and improving the soil *** experiment included five treatments:apple replant soil(CK),methyl bromide fumigation apple replant soil(FM),replant soil with biochar addition(2%),replant soil with *** spore solution(8×10^(7)spores·mL^(-1)),and replant soil with biochar and *** spore solution *** biomass,the activity of antioxidant enzymes in the leaves and roots,and soil environmental variables were *** community composition and community structure were analyzed using 16SrDNA and ITS2 gene *** significantly reduced the abundance of *** and increased soil microbial diversity and *** also increased the soil enzyme activities(urease,invertase,neutral phosphatase,and catalase),the biomass(plant height,fresh weight,dry weight)and the activity of antioxidant enzymes(superoxide dismutase,peroxidase,and catalase).The root indexes of apple seedlings was also increased in replant soil by *** sum,biochar promoted the growth of plants,improved the replant soil environment,and alleviated apple replant disease.

关键词： Biochar Fusarium oxysporum Apple replant disease Soil environment

Linear and Non-Linear Dynamics of Inertial Waves in a Rotating Cylinder with Antiparallel Inclined Ends

在线全文

学校读者我要写书评

暂无评论

Fluid Dynamics & materials Processing 2024年第4期20卷 787-802页

作者： Mariya Shiryaeva Mariya Subbotina Stanislav Subbotin laboratory of Vibrational Hydromechanics Perm State Humanitarian Pedagogical UniversityPerm614000Russia The Department for Construction Engineering and material Science Perm National Research Polytechnic UniversityPerm614990Russia

This work is devoted to the experimental study of inertial wave regimes in a non-uniform rotating cylinder with antiparallel inclined *** this setting,the cross-section of the cylinder is divided into two regions where the fluid depth increases or decreases with *** different regimes are found:inertial wave attractor,global oscillations(the cavity’s resonant modes)and regime of symmetric reflection of wave *** linear wave regimes,a steady single vortex elongated along the rotation axis is *** location of the wave’s interaction with the sloping ends determines the vortex position and the vorticity *** non-linear regimes several pairs of the triadic resonance subharmonics are detected *** instability of triadic resonance is accompanied by the periodic generation of mean vortices drifting in the azimuthal ***,the appearance frequency of the vortices is consistent with the low-frequency subharmonic of the triadic *** experimental results shed light on the mechanisms of the inertial wave interaction with zonal flow and may be useful for the development of new methods of mixing.

关键词： Rotation inertial wave attractor triadic resonance zonal flow instability

Fabrication of wide temperature lanthanum and cerium doped Cu/TNU-9 catalyst with excellent NH_(3)-SCR performance and outstanding SO_(2)+H_(2)O tolerance

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2023年第8期41卷 1195-1202,I0003页

作者： Jian Yang Zhifang Li Jinxing Cui Yuanyuan Ma Yueyu Li Qian Zhang Kun Song Changlong Yang College of materials Science and Engineering Qiqihar UniversityQiqihar 161006China Heilongjiang Province Key laboratory of Polymeric Composite material Qiqihar UniversityQiqihar 161006China College of Chemistry and Chemical Engineering Qiqihar UniversityQiqihar 161006China

The effects of La on the catalytic performance,SO_(2)and H2O resistance of Cu-Ce/TNU-9 catalyst were studied in the selective catalytic reduction of NO_(x)via ammonia(NH_(3)-SCR).The results show that the La doped Ce-Cu/TNU-9(CCL/T9)catalyst exhibits better SCR performance than Ce-Cu/TNU-9(CC/T9)and Cu/TNU-9(C/T9)in the wide temperature window(200-450℃)due to La benefiting from enhancing Cu^(+)+Ce^(4+)?Cu^(2+)-+Ce^(3+)to facilitate the electron transfer,which further accelerates the oxidation of NO into NO_(2)that leads to the"Fast SCR".The La can also enhance the surface acidic,redox property and is beneficial to the formation of oxygen ***,the larger co ntent of Ce^(3+) can produce oxygen vacancy,resulting in rising SCR *** CCL/T9 has outstanding water and SO_(2) resistance,which may be due to the adso rbed S on the surface of these catalysts mainly existing in the form of a small amount of sulfate and sulfite,the decomposition of ammonium bisulphite under high temperature and the hydrophobicity of TNU-9 zeolite.

关键词： NH_(3)-SCR TNU-9 Water and sulfur resistance Rare earths