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Graphene oxide-decorated Fe2（MoO4）3 microflowers as a promising anode for lithium and sodium storage

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Nano Research 2018年第3期11卷 1285-1293页

作者： Chunhua Han Xiaoji Ren qidong li Wen Luo Lei Huang liang Zhou liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Luoshi Road122 Wuhan 430070 China Laboratoire de Chimie et Physique: Approche Multiechelles des Milieux Complexes Institut Jean Barriol Universite de Lorraine57070 Metz France

Mixed transition metal oxides （MTMOs） have received intensive attention as promising anode materials for lithium-ion batteries （liBs） and sodium-ion batteries （SIBs）. In this work, we demonstrate a facile one-step water-bath method for the preparation of graphene oxide （GO） decorated Fe2（MoO4）3 （FMO） microflower composite （FMO/GO）, in which the FMO is constructed by numerous nanosheets. The resulting FMO/GO exhibits excellent electrochemical performances in both liBs and SIBs. As the anode material for liBs, the FMO/GO delivers a high capacity of 1,220 mAh·g^-1 at 200 mA·g^-1 after 50 cycles and a capacity of 685 mAh·g^-1 at a high current density of 10 A·g^-1. As the anode material for SIBs, the FMO/GO shows an initial discharge capacity of 571 mAh·g^-1 at 100 mA·g^-1, maintaining a discharge capacity of 307 mAh·g^-1 after 100 cycles. The promising performance is attributed to the good electrical transport from the intimate contact between FMO and graphene oxide. This work indicates that the FMO/GO composite is a promising anode for high-performance lithium and sodium storage.

关键词： Fe2(MoO4)3 microflowers anode lithium and sodium storage

High‑Energy and High‑Power Pseudocapacitor–Battery Hybrid Sodium‑Ion Capacitor with Na^(+) Intercalation Pseudocapacitance Anode

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Nano-Micro Letters 2021年第3期13卷 209-221页

作者： Qiulong Wei qidong li Yalong Jiang Yunlong Zhao Shuangshuang Tan Jun Dong liqiang Mai Dong‑liang Peng Department of Materials Science and Engineering Fujian Key Laboratory of Materials GenomeCollege of MaterialsXiamen UniversityXiamen 361005People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055People’s Republic of China Advanced Technology Institute University of SurreyGuildford Surrey GU27XHUK

High-performance and low-cost sodium-ion capacitors(SICs)show tremendous potential applications in public transport and grid energy ***,conventional SICs are limited by the low specific capacity,poor rate capability,and low initial coulombic efficiency(ICE)of anode ***,we report layered iron vanadate(Fe5V15O39(OH)9·9H2O)ultrathin nanosheets with a thickness of~2.2 nm(FeVO UNSs)as a novel anode for rapid and reversible sodium-ion *** to in situ synchrotron X-ray diffractions and electrochemical analysis,the storage mechanism of FeVO UNSs anode is Na+intercalation pseudocapacitance under a safe potential *** FeVO UNSs anode delivers high ICE(93.86%),high reversible capacity(292 mAh g^−1),excellent cycling stability,and remarkable rate ***,a pseudocapacitor–battery hybrid SIC(PBH-SIC)consisting of pseudocapacitor-type FeVO UNSs anode and battery-type Na3(VO)2(PO4)2F cathode is assembled with the elimination of presodiation *** PBH-SIC involves faradaic reaction on both cathode and anode materials,delivering a high energy density of 126 Wh kg^−1 at 91 W kg^−1,a high power density of 7.6 kW kg^−1 with an energy density of 43 Wh kg−1,and 9000 stable *** tunable vanadate materials with high-performance Na+intercalation pseudocapacitance provide a direction for developing next-generation highenergy capacitors.

关键词： Sodium-ion capacitors Pseudocapacitance Hybrid capacitors Two-dimensional materials Iron vanadate

Constructing artificial mimic-enzyme catalysts for carbon dioxide electroreduction

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Science China Chemistry 2022年第1期65卷 106-113页

作者： li li qidong li Xiaodong li Shumin Wang Kai Zheng Ming Zuo Xiaolong Zu Yuan Zhao Wensheng Yan Junfa Zhu Yongfu Sun Yi Xie Hefei National Laboratory for Physical Sciences at Microscale National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230026China Engineering Laboratory for Next Generation Power and Energy Storage Batteries Tsinghua Shenzhen International Graduate SchoolShenzhen 518055China Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

Natural bio-enzyme catalysts usually exhibit unexpected performances for many significant reactions,which are worthy of *** we report artificial metal-sulfur-carbon(M-S-C)mimic-enzyme catalysts based on bionic *** catalysts combine metal centers and functional ligands,which realize the universal fabrication of phase and adjustable *** synthesized catalysts inherit the highly active and selective feature of bio-enzyme *** directly used for carbon dioxide electroreduction reaction,the Sn-S-C catalyst exhibits high selectivity for formate(Faradaic efficiency>95%),as well as a continuous stability over 120 h at a high current density of 740 m A cm^(-2),greatly outperforming the reported catalysts for formate *** catalytic sites and pathways are probed with in-situ Fourier transform infrared(FTIR)spectra,in-situ Raman spectra and synchrotron-radiation X-ray photoelectron *** results break the inherent conundrum that it is impossible to simultaneously realize activity and durability under high *** findings offer a versatile strategy to inherit from nature and integrate different components,thus designing efficient catalysts for various challenging reactions and energy conversions via a natural sustainable way.

关键词： carbon dioxide electroreduction universal synthesis mimic-enzyme catalysts

Metastable amorphous chromium-vanadium oxide nanoparticles with superior performance as a new lithium battery cathode

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Nano Research 2014年第11期7卷 1604-1612页

作者： Jinzhi Sheng qidong li Qiulong Wei Pengfei Zhang Qinqin Wang Fan Lv Qinyou An Wei Chen liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing WUT-Harvard Joint Nano Key LaboratoryWuhan University of Technology Wuhan 430070 China

The main drawbacks of vanadium oxide as a cathode material are its low conductivity, low practical capacity and poor cycling stability. Adding Cr can improve its conductivity and a metastable amorphous state may provide higher capacity and stability. In this work, metastable amorphous Cr-V-O nano- particles have been successfully prepared through a facile co-precipitation reaction followed by annealing treatment. As a cathode material for lithium batteries, the metastable amorphous Cr-V-O nanoparticles exhibit high capacity （260 mAh/g at 100 mA/g between 1.5-4 V）, low capacity loss （more than 80% was retained after 200 cycles at 100 mA/g） and high rate capability （up to 3 A/g）.

关键词： Cr2V4O13 nanoparticles metastable amorphous structure lithium battery

Hydrogen Storage Properties of Ti_(1.2)Fe+xCa Hydrogen Storage Alloys

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Rare Metals 2001年第4期20卷 265-269页

作者： Wei Wang, Changpin Chen, Haiou Xu, Hon gbo li, qidong Wang Department Materiak Science and Engineering, Zhejiang University, Hangvhou 310027. China Dept. of Mat. Sci. and Eng. Zhejiang Univ. Hangzhou 310027 China

The hydrogen storage properties of Ti1.2Fe+xCa (x=1%, 3% and 5% in mass fraction) alloys was investigated. Results stow that the modified alloys can be activated without any thermal treatment at room temperature due to the addition of Ca and excess Ti in (lie alloys. Hydrogen storage properties of these modified alloys vary with Ca amount and reaction temperature. In addition, the influence mechanism of the addition of Ca and excessive Ti on the activation behavior and hydrogen storage capacity of the alloys was discussed.

关键词： TiFe Ca hydrogen storage alloy hydrogen storage property

Progress and perspective of the cathode/electrolyte interface construction in all-solid-state lithium batteries

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Carbon Energy 2021年第6期3卷 866-894页

作者： Shiming Su Jiabin Ma liang Zhao Kui lin qidong li Shasha Lv Feiyu Kang Yan-Bing He Shenzhen Geim Graphene Center International Graduate School at ShenzhenTsinghua UniversityShenzhenChina Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua UniversityBeijingChina Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijingChina

Security risks of flammability and explosion represent major problems with the use of conventional lithium rechargeable batteries using a liquid *** application of solid-state electrolytes could effectively help to avoid these safety ***,integrating the solid-state electrolytes into the all-solid-state lithium batteries is still a huge challenge mainly due to the high interfacial resistance present in the entire battery,especially at the interface between the cathode and the solid-state electrolyte pellet and the interfaces inside the ***,recent progress made from investigations of cathode/solid-state electrolyte interfacial behaviors including the contact problem,the interlayer diffusion issue,the space-charge layer effect,and electrochemical compatibility is presented according to the classification of oxide-,sulfide-,and polymer-based solid-state *** also propose strategies for the construction of ideal next-generation cathode/solid-state electrolyte interfaces with high room-temperature ionic conductivity,stable interfacial contact during long cycling,free formation of the space-charge region,and good compatibility with high-voltage cathodes.

关键词： cathode configuration design interface lithium battery solid-state electrolyte

Increase in the variability of terrestrial carbon uptake in response to enhanced future ENSO modulation

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 32-38页

作者： Younong li li Dan Jing Peng qidong Yang Fuqiang Yang Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Region Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate change in middle and low latitudes and thus strongly influences the terrestrial carbon cycle through land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investigate the impact of future ENSO modulation on carbon flux variability,this study used 10 CMIP6 earth system models to analyze ENSO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by CMIP6 *** results show a high consistency in the simulations,with both ENSO modulation and carbon flux variability showing an increasing trend in the *** higher the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the greater the increase in *** flux variability in the middle and low latitudes under SSP2-4.5 increases by 30.9%compared to historical levels during 1951-2000,while under SSP5-8.5 it increases by 58.2%.Further analysis suggests that ENSO influences mid-and low-latitude carbon flux variability primarily through *** occurrence may potentially be attributed to the increased responsiveness of gross primary productivity towards regional temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： Carbon variability ENSO modulation CMIP6 models

Factors influencing farmer willingness to plant forage triticale in winter fallow fields in Northern China:An example from central Shanxi Province

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Grassland Research 2024年第3期3卷 290-298页

作者： Qishen Jiang Haibin Dong qidong li Zongxian Zhang Changyu Gao Yanting Yin Xiangyang Hou College of Grassland Science Shanxi Agricultural UniversityJinzhongShanxiChina Key Laboratory for Model Innovation in Forage Production Efficiency Ministry of Agriculture and Rural AffairsJinzhongShanxiChina

Background:Using winter fallow fields for plant forage is important to ensure food *** triticale(×Triticosecale)has higher yields than other available forage crops and can be planted widely in winter fallow ***,the planted area of forage triticale in Shanxi Province,China,has exceeded 3500 ha;however,problems such as low farmer willingness to plant(WTP)winter forage still ***:A total of 219 farmers were surveyed in Taiyuan,Lvliang,and *** analyzed the factors influencing farmer WTP forage triticale,focusing on personal,family,land,and cognition *** used a binary logistic regression model to quantify the influence of various factors on farmer behavior and conducted a robustness check and heterogeneity ***:“Age”was negatively correlated with farmer WTP—farmers 50 years of age and older showed less WTP.“Land lease situation”was also negatively correlated with *** that positively correlated with WTP were“land areas,”“raising of livestock,”“size of labor force,”and“development prospect.”Conclusions:Many farmers are over 50 years of age,land lessors,and have low WTP winter *** who raise livestock and have large labor forces,huge land areas,and good cultivation prospects have a high *** study identifies the factors influencing farmers'WTP to assist in the development of the forage triticale industry in the study region,improving land resource utilization and *** findings are likely to have wider relevance and application.

关键词： binary logistic regression analysis factors influencing farmer decisions farmer willingness to plant farmers forage triticale

Adaptive State Event Triggered Control for Uncertain Unmanned Fire-fighting Robots

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Adaptive State Event Triggered Control for Uncertain Unmanne...