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Journal of Materials Science & Technology 2023年第32期163卷 59-68页

作者： yushu tang Pengwei Tan Yuanyuan Luo Zheng Zhang Liyang Luo Guotao Duan School of Integrated Circuits Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China Wuhan National Laboratory for Optoelectronics School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074China

ZnO-based thin film transistors(TFTs)with high bias stability are challenging due to the intrinsic defects and overhigh interface trap *** this work,we fabricated Hf-doped ZnO films with different cycle ratio of Zn/Hf via atomic layer deposition and subsequent annealing *** results show that the cycle ratio of Zn/Hf is optimized to be 10:1,and the corresponding atomic ratio is 2.24%.The threshold voltage and subthreshold swing of the devices are improved as the annealing temperature increases,owning to the decrease of the oxygen vacancies and interface trap ***,we developed Hf-doped ZnO TFT with high bias stability by introducing HfO_(2)intermediate layer between the active layer and SiO_(2)dielectric layer,and the shift of threshold voltage is as low as-0.273 V,showing high bias ***,the device has the high field-effective mobility of 52.4 cm^(2)/Vs,low subthreshold swing of 0.68 V/dec and high Ion/Ioff of 3.6×10^(8).The results indicate a promising fabrication method for highperformance ZnO-based TFTs,which may be applied in logic circuits,radio frequency identification and so on.

关键词： Hf-doped ZnO films Thin film transistors Atomic layer deposition Oxygen vacancy Interface trap density

Variability of soil organic carbon reservation capability between coastal salt marsh and riverside freshwater wetland in Chongming Dongtan and its microbial mechanism

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Journal of Environmental Sciences 2012年第6期24卷 1053-1063页

作者： Yu Hu Yanli Li Lei Wang yushu tang Jinhai Chen Xiaohua Fu Yiquan Le Jihua Wu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Life Science Fudan UniversityShanghai 200433China

Two representative zones in Chongming Dongtan which faced the Yangtze River and East China Sea respectively were selected to study the variability of soil organic carbon （SOC） reservation capability between coastal wetland and riverside wetland in the Chongming Dongtan wetland as well as its mechanism by analyzing soil characteristics and plant *** results showed the SOC content of riverside wetland was only 48.61% （P=0.000 〈 0.05） that of coastal *** the organic matter inputs from plant litter of the coastal wetland and riverside wetland were approximately the same,the higher soil microbial respiration （SMR） of riverside wetland led to its lower SOC reservation *** the riverside wetland,the high soil microbial biomass,higher proportion of β-Proteobacteria,which have strong carbon metabolism activity and the existence of some specific aerobic heterotrophic bacteria such as Bacilli and uncultured Lactococcus,were the important reasons for the higher SMR compared to the coastal *** were additional differences in soil physical and chemical characteristics between the coastal wetland and riverside *** analysis of predominant bacteria and microbial biomass showed that soil salinity influenced β-Proteobacteria and microbial biomass most negatively among these physical and chemical *** the low salinity of the riverside area was suitable for the growth of microorganisms,especially β-Proteobacteria and some specific bacteria,which led to the high SMR and low SOC reservation capability when compared to the coastal area.

关键词： soil organic carbon carbon reservation capability community diversity coastal wetland riverside wetland ChongmingDongtan

Exfoliated multi-layered graphene anode with the broadened delithiation voltage plateau below 0.5 V

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Journal of Energy Chemistry 2020年第10期29卷 233-242页

作者： Xinlong Ma Xinyu Song yushu tang Enzuo Liu Chenggen Xu Chuanlei Qi Yun Li Jinsen Gao Yongfeng Li State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051JiangsuChina School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials Tianjin UniversityTianjin 300072China

The commercial graphite(CG)is the conventional anode material for lithium ion batteries(LIBs)due to its low delithiation voltage plateau(below 0.5 V)and extraordinary ***,the further promotion of energy density of LIBs is restricted by the limited capacity below 0.5 V of ***,based on the supercritical CO2 exfoliation technique,the production of multi-layered graphene(MLG)is achieved from the pilot scale production *** great merit of the exfoliated MLG anode is that the voltage plateau below 0.5 V is broadened obviously as compared to those of natural graphite and ***,no obvious lithium dendrites are observed for MLG during the lithiation *** large delithiation capacity under the low voltage plateau of MLG is mainly benefited from the combination of Li intercalation and boundary storage mechanism,which is further confirmed by the density functional theory *** LiFePO4/MLG full cell can afford the satisfactory electrochemical property with respect to the capacity,energy density and ultralong cycling stability(90%capacity retention after 500 cycles at 2 C),significantly better than that of LiFePO4/***,this developed technique not only dedicates to producing the high-performance anode for LIBs but also opens a door for the mass production of MLG in the industrial scale.

关键词： Multi-layered graphene Supercritical CO2 exfoliation Anode Broadened delithiation voltage plateau Intercalation and boundary storage

Synthesis and Surface Activity of Biquaternary Ammonium Salt Gemini Surfactants with Ester Bond

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Wuhan University Journal of Natural Sciences 2008年第2期13卷 227-231页

作者： GAO Zhinong TAI Shuxin ZHANG Qi ZHAO Yu LU Bo GE yushu HUANG Li tang Xiaoyan College of Chemistry and Molecular Sciences WuhanUniversity Wuhan 430072 Huhei China

The synthesis and surface activity of gemini surfactants with ester bond as spacer are described. Their critical micelle concentrations （CMC） are much lower than that of conventional surfactants, i.e., 1.62×10^-5, 1.38×10^-5, 1.28×10^-5 mol·L^-1 for gemini Ⅰ, Ⅱ and Ⅲ respectively. Surface tension at the CMC of gemini Ⅰ, Ⅱ and Ⅲ were 36.4, 38.5, 41.2 mN · m^-1. The physico-chemical properties such as Krafft points, foaming abilities and emulsifying power were also investigated. It is found that the title compounds have low Krafft points and show good solubility in water. The gemini surfactants synthesized also exhibit good foaming properties and excellent emulsifying power toward toluene. The foaming abilities and emulsifying power increase with the increase in carbon number of hydrophobic chain, and this might be caused by the sheer viscosity of different gemini surfactant solution.

关键词： gemini surfactant synthesis property

Revealing alkali metal ions transport mechanism in the atomic channels of Au@a-MnO_(2)

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Journal of Energy Chemistry 2023年第7期82卷 350-358,I0008页

作者： Jingzhao Chen Yong Su Hongjun Ye yushu tang Jitong Yan Zhiying Gao Dingding Zhu Jingming Yao Xuedong Zhang Tingting Yang Baiyu Guo Hui Li Qiushi Dai Yali Liang Jun Ma Bo Wang Haiming Sun Qiunan Liu Jing Wang Congcong Du Liqiang Zhang Yongfu tang Jianyu Huang Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004HebeiChina School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105HunanChina Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004HebeiChina

Understanding alkali metal ions’(e.g.,Li^(+)/Na^(+)/K^(+))transport mechanism is challenging but critical to improving the performance of alkali metal *** using a-MnO_(2)nanowires as cathodes,the transport kinetics of Li^(+)/Na^(+)/K^(+)in the 2×2 channels of a-MnO_(2)with a growth direction of[001]is *** show that ion radius plays a decisive role in determining the ion transport and *** of the ion radii,Li^(+)/Na^(+)/K^(+)can all go through the 2×2 channels of a-MnO_(2),generating large stress and causing channel merging or ***,smaller ions such as Li^(+)and Na^(+)cannot only transport along the[001]direction but also migrate along thedirection to the nanowire surface;for large ion such as K^(+),diffusion along thedirection is *** different ion transport behavior has grand consequences in the electrochemistry of metal oxygen batteries(MOBs).For Li-O_(2)battery,Li^(+)transports uniformly to the nanowire surface,forming a uniform layer of oxide;Na^(+)also transports to the nanowire surface but may be clogged locally due to its larger radius,therefore sporadic pearl-like oxides form on the nanowire surface;K^(+)cannot transport to the nanowire surface due to its large radius,instead,it breaks the nanowire locally,causing local deposition of potassium *** study provides atomic scale understanding of the alkali metal ion transport mechanism which may be harnessed to improve the performance of MOBs.

关键词： Ion transport In-situ TEM STEM Metal oxygen batteries Metal ion batteries

The High Surface Ratio Micro-MoS<sub>2</sub>Grain Composed of MoS<sub>2</sub>Nanosheet Prepared with One-Step Hydrothermal Synthesis

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Journal of Minerals and Materials Characterization and Engineering 2018年第3期6卷 373-381页

作者： Guangtong Zhou Xiangbin Zeng Wenzhao Wang Yishuo Hu Sue Xu Shaoxiong Wu Yang Zeng Wen Jing Tingting Ren Zhenyu Guo Pengfei Xu Haoran Li yushu tang China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology Wuhan China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan China

Micro molybdenum disulfide was prepared with one-step hydrothermal method;the influence of reactant concentration and temperature on the surface ratio of micro-MoS2 grain was investigated. Raman spectroscopy (Raman), X-ray diffraction (XRD), and Scanning electron microscopy (SEM) were used to characterize the structure, composition and morphology of MoS2. The results show that micro-MoS2 grains were synthesized with one-step hydrothermal synthesis, and the morphology of micro-MoS2 grains is like flower and sphere. The SEM figures indicate that the surface ratio of micro-MoS2 grains is different and also show that the surface ratio of micro-MoS2 grains can be improved by regulating reactant concentration and temperature. This research showed a method to improve the surface ratio of micro-MoS2 grains.

关键词： Micro-MoS2 Grain Hydrothermal One-Step Reaction Nanosheet

重庆地区人群CYP2C19基因型表型多态性分析及检测的临床意义

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重庆医学 2015年第7期44卷 899-901页

作者：邓济甦唐翌姝毕小云重庆医科大学附属第一医院检验科 400016

目的了解重庆地区汉族人群的细胞色素氧化酶P4502C19(CYP2C19)基因型,根据基因型选择药物并合理调整药物剂量,提高疗效、降低不良反应发生概率,以期达到疗效最大、不良反应最少及费用最低的效果。方法应用基因芯片的方法进行基因分型。... 详细信息

目的了解重庆地区汉族人群的细胞色素氧化酶P4502C19(CYP2C19)基因型,根据基因型选择药物并合理调整药物剂量,提高疗效、降低不良反应发生概率,以期达到疗效最大、不良反应最少及费用最低的效果。方法应用基因芯片的方法进行基因分型。结果男性中基因型为野生型纯合子*1/*1(wt/wt)占40.47%(17/42),基因型为*1/*2(wt/m1)占38.09%(16/42),基因型为*1/*2(wt/m2)占11.90%(5/42),基因型为*2/*2(m1/m1)占7.14%(3/42),基因型为*2/*2(m1/m2)为0(0/42),基因型为*2/*2(m2/m2)占2.38%(1/42)。女性中基因型为野生型纯合子*1/*1(wt/wt)占57.14%(8/14),基因型为*1/*2(wt/m1)占28.57%(4/14),基因型为*1/*2(wt/m2)占7.14%(1/14),基因型为*2/*2(m1/m1)为0(0/14),基因型为*2/*2(m1/m2)为0(0/14),基因型为*2/*2(m2/m2)占7.14%(1/14)。在本实验中未发现*2/*2(m1/m2)基因型。结论在中国男性和女性受试者中,性别对重庆地区汉族人群细胞色素氧化酶CYP2C19遗传多态性的影响在统计学上无差别。

关键词：细胞色素氧化酶P4502C19(CYP2C19) 基因多态性基因型

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基于EMD的复合储能不同控制策略对比分析

电力建设 2017年第3期38卷 77-84页

作者：孙玉树唐西胜田春筝苗福丰孙晓哲中国科学院电工研究所北京市100190 国网河南省电力公司经济技术研究院郑州市450052 中石化胜利石油工程有限公司塔里木分公司新疆维吾尔自治区库尔勒市841000

风电的规模化发展对电力系统造成了很大影响,因此利用复合储能系统进行并网风电的波动平抑具有重要意义。首先,利用经验模态分解(empirical mode decomposition,EMD)将风电分解为不同的固有模态函数(intrinsic mode function,IM F)分量... 详细信息

风电的规模化发展对电力系统造成了很大影响,因此利用复合储能系统进行并网风电的波动平抑具有重要意义。首先,利用经验模态分解(empirical mode decomposition,EMD)将风电分解为不同的固有模态函数(intrinsic mode function,IM F)分量,通过不同的策略对比,挖掘风电并网的选取原则,在兼顾储能经济性的条件下使其得到有效平滑。然后,以储能爬坡功率为约束,对比选取不同的控制策略,实现蓄电池和超级电容器之间的功率分配。最后,通过算例分析验证了控制策略的有效性,为风电功率波动的平抑提供参考。

关键词：风电波动平抑复合储能经验模态分解(EMD) 波动率爬坡功率