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| 1 | Field-effect at electrical contacts to two-dimensional materials显示文摘The inferior electrical contact to two-dimensional(2D)materials is a critical challenge for their application in post-silicon very large-scale integrated circuits.Electrical contacts were generally related to their resistive effect,quantified as contact resistance.With a systematic investigation,this work demonstrates a capacitive metal-insulator-semiconductor(MIS)field-effect at the electrical contacts to 2D materials:The field-effect depletes or accumulates charge carriers,redistributes the voltage potential,and gives rise to abnormal current saturation and nonlinearity.On one hand,the current saturation hinders the devices’driving ability,which can be eliminated with carefully engineered contact configurations.On the other hand,by introducing the nonlinearity to monolithic analog artificial neural network circuits,the circuits’perception ability can be significantly enhanced,as evidenced using a coronavirus disease 2019(COVID-19)critical illness prediction model.This work provides a comprehension of the field-effect at the electrical contacts to 2D materials,which is fundamental to the design,simulation,and fabrication of electronics based on 2D materials. | Yao Guo Yan Sun Alvin Tang Ching-Hua Wang Yanqing Zhao Mengmeng Bai Shuting Xu Zheqi Xu Tao Tang Sheng Wang Chenguang Qiu Kang Xu Xubiao Peng Junfeng Han Eric Pop Yang Chai | 2021 | Nano Research2021，14，12： | 0 |
| 2 | Water molecules and oxygen-vacancy modulation of vanadium pentoxide with fast kinetics toward ultrahigh power density and durable flexible all-solid-state zinc ion battery显示文摘Aqueous zinc ion battery(ZIB)with many virtues such as high safety,cost-effective,and good environmental compatibility is a large-scale energy storage technology with great application potential.Nevertheless,its application is severely hindered by the slow diffusion of zinc ions in desirable cathode materials.Herein,a technique of water-incorporation coupled with oxygen-vacancy modulation is exploited to improve the zinc ions diffusion kinetics in vanadium pentoxide(V_(2)O_5)cathode for ZIB.The incorporated water molecules replace lattice oxygen in V_(2)O_5,and function as pillars to expand interlayer distance.So the structural stability can be enhanced,and the zinc ions diffusion kinetics might also be promoted during the repeated intercalation/deintercalation.Meanwhile,the lattice water molecules can effectively enhance conductivity due to the electronic density modulation effect.Consequently,the modulated V_(2)O_5(H-V_(2)O_5)cathode behaves with superior rate capacity and stable durability,achieving 234 mA h g^(-1)over 9000 cycles even at 20 A g^(-1).Furthermore,a flexible all-solid-state(ASS)ZIB has been constructed,exhibiting an admirable energy density of 196.6 Wh kg^(-1)and impressive power density of 20.4 kW kg^(-1)as well as excellent long-term lifespan.Importantly,the assembled flexible ASS ZIB would be able to work in a large temperature span(from-20 to 70℃).Additionally,we also uncover the energy storage mechanism of the H-V_(2)O_5 electrode,offering a novel approach for creating high-kinetics cathodes for multivalent ion storage. | Wenda Qiu Yunlei Tian Shuting Lin Aihua Lei Zhangqi Geng Kaitao Huang Jiancong Chen Fuchun Huang Huajie Feng Xihong Lu | 2023 | Journal of Energy Chemistry2023，，10： | 0 |
| 3 | High rate and ultralong life flexible all-solid-state zinc ion battery based on electron density modulated NiCo_(2)O_(4) nanosheets显示文摘The development of zinc ion batteries (ZIBs) with large capacity,high rate,and durable cathode material is a crucial and urgent task.Ni Co_(2)O_(4)(NCO) has received ever-growing interest as a potential cathode material for ZIBs,owing to the high theoretical capacity,rich source,cost-effective,and versatile redox nature.However,due to the slow dynamics of the NCO electrodes,its practical application in highperformance systems is severely limited.Herein,we report an electron density modulated NCO nanosheets (N-NCO NSs) with high-kinetics Zn^(2+)-storage capability as an additive-free cathode for flexible all-solid-state (ASS) ZIBs.By virtue of the enhanced electronic conductivity,improved reaction kinetics,and increased active sites,the optimized N-NCO NSs electrode delivers a high capacity of 357.7 m Ah g^(-1)at 1.0 A g^(-1)and a superior rate capacity of 201.4 m Ah g^(-1)at 20 A g^(-1).More importantly,a flexible ASS ZIBs device is manufactured using a solid polymer electrolyte of a poly (vinylidene fluoride hexafluoropropylene)(PVDF-HFP) film.The flexible ASS ZIBs device shows superb durability with 80.2%capacity retention after 20,000 cycles and works well in the range of-20–70℃.Furthermore,the flexible ASS ZIBs achieves an impressive energy density as high as 578.1 W h kg^(-1)with a peak power density of 33.6 k W kg^(-1),substantially outperforming those latest ZIBs.This work could provide valuable insights for constructing high-kinetics and high-capability cathodes with long-term stability for flexible ASS ZIBs. | Wenda Qiu Yunlei Tian Zhenchao Lin Shuting Lin Zhangqi Geng Kaitao Huang Aihua Lei Fuchun Huang Huajie Feng Fengze Ding Yu Li Xihong Lu | 2022 | Journal of Energy Chemistry2022，31，7： | 0 |
| 4 | Seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions显示文摘Tropical seagrass meadows and coral reefs often function as interconnected marine habitats,but they are often studied and managed as homogenous units.As macrohabitats,seagrass meadows provide important benefits to adjacent reef ecosystems by acting as natural filters of sediments and nutrients,and by providing critical feeding,nursery,and refuge habitats for reef fishes and other fauna.Whilst the macrohabitat functions of seagrass meadows have been often acknowledged,their microhabitats functions have largely been neglected.The purpose of the study is to explore how seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions.The paper reveals some of the diversity of microhabitats that seagrass meadows contain,such as macroalgal mats,rubble cavities,sand patches with sparse seagrass,anemone gardens,hard substratum,and sponges mixed with seagrass.We highlight the ways in which reef creatures have diversified and specialized in using these different microhabitats,and postulate that seagrass microhabitat diversity enhances the habitat function and faunal diversity of seagrass meadows. | Jianguo Du Wenjia Hu Ivan Nagelkerken Laddawan Sangsawang Kar Hoe Loh Jillian Lean-Sim Ooi Jianji Liao Xinqing Zheng Shuting Qiu Bin Chen | 2020 | Ecosystem Health and Sustainability2020，6，1： | 0 |
| 5 | Effective Dose Screening of Low Level Red Light in Different Cell Indexes显示文摘The low level red light irradiation dose that produced positive response on different cell indexes was selected through experiments.In fibroblast detection model,the low level red light irradiation dose that had positive response to the four indicators of mitochondrial membrane potential,ATP release,cell migration and collagen synthesis was screened.The experimental results showed that low level red light with a irradiation dose of 2 J/cm^(2) had a positive response to the above four indexes in fibroblast.The test model on fibroblast was later transferred to dermal papilla cells for further experimental verification.The results showed that low level red light with a irradiation dose of 2 J/cm^(2) also had a positive response to the four indicators of dermal papilla cells,namely,mitochondrial membrane potential,ATP release,cell proliferation rate and collagen synthesis.It is proved that the low level red light with a irradiation dose of 2 J/cm^(2) could improve the mitochondrial function,cell migration and collagen synthesis of fibroblast and dermal papilla cell,thus providing energy for cell activities,improving cell repair ability and cell anti-aging ability. | Qiu Shuting Pan Zhi Jiang Xiao Hu Fan Zhang Hao Wu Fengjuan | 2023 | China Detergent & Cosmetics2023，8，3： | 0 |
| 6 | Hollow catalysts through different etching treatments to improve active sites and oxygen vacancies for high-performance Li-O_(2)battery显示文摘Li-O_(2)batteries are regarded as one of the most promising next-generation battery systems due to their high theoretical energy density,finding effective cathode catalysts with fine-tuned structure is a key way to improve the performance.Herein,based on the structure of cubic zeolitic imidazolate framework-67(ZIF-67),a series of hollow catalysts were synthesized by different chemical etching treatments.Firstly,from the perspective of metal,nickel nitrate is used for etching,hollow Ni ZIF is obtained through Kirkendall effect.Secondly,hollow TA-ZIF is obtained by adding tannic acid to replace the methylimidazole ligand.Hollow structures have larger surface areas,materials can expose more active sites,which can lead to better performance of Li-O_(2)batteries.On this basis,having more oxygen vacancies can also improve the battery performance.At the same time,further loading noble metal ruthenium on the synthesized cobalt-based catalyst can effectively reduce the overpotential of Li-O_(2)battery and improve the battery performance.For TA-ZIF with more stable hollow structure and more oxygen vacancies,the cycle performance reaches 330 cycles after loading Ru.Compared with the 64 cycles of solid Co_(3)O_(4),it has a great improvement. | Jiachen Qiu Yuran Lin Shuting Zhang Jie Ma Yu Zhang Mengwei Yuan Genban Sun Caiyun Nan | 2023 | Nano Research2023，16，5： | 0 |
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