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| 1 | Synthesis and characterization of Li_(1.3)Al_(0.3)Ti_(1.7)(PO_4)_3-coated LiMn_2O_4 by wet chemical route显示文摘Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 was prepared by wet chemical route. The phase,surface morphology,and electrochemical properties of the prepared powders were characterized by X-ray diffraction,scanning electron micrograph,and galvanostatic charge-discharge experiments. Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 has similar X-ray diffraction patterns as LiMn2O4. The corner and border of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 particles are not as clear as the uncoated one. The two powders show similar values of lithiumion diffusion coefficient. When cycled at room temperature and 55°C for 40 times at the charge-discharge rate of 0.2C,Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 shows the capacity retentions of 98.2% and 93.9%,respectively,which are considerably higher than the values of 85.4% and 79.1% for the uncoated one. Both the capacity retention differences between Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 and LiMn2O4 cycling at room temperature and 55°C become larger with the increase of charge-discharge rate. When the charge-discharge rate reaches 2C,the capacity retention of LATP-coated LiMn2O4 becomes 8.4% higher than the uncoated LiMn2O4 for room temperature cycling,and it becomes 11.1% higher than the latter when cycled at 55°C. | Wu Xianming Li Runxiu Chen Shang He Zeqiang | 2009 | Rare Metals2009,28,2: | 4 |
| 2 | Sol-gel preparation and characterization of Li_(1.3)Al_(0.3)Ti_(1.7)(PO_4)_3 sintered with flux of LiBO_2显示文摘Li1.3Al0.3Ti1.7(PO4)3 pellets sintered with different mole fractions of LiBO2 were prepared by sol-gel method.The structural identification,surface morphology,ionic conductivity,and activation energy of the pellets were studied by X-ray diffraction,scanning electron microscopy,and electrochemical impedance spectroscopy.The results show that all the Li1.3Al0.3Ti1.7(PO4)3 pellets sintered with different mole fractions of LiBO2 have similar X-ray diffraction patterns.The sintered pellet becomes denser and the boundary and corner of the particles become illegible with the increase of LiBO2.Among the Li1.3Al0.3Ti1.7(PO3)4 pellets sintered with different mole fractions of LiBO2,the one sintered with 1 mol% LiBO2 shows the highest ionic conductivity of 3.95×10-4 S.cm-1 and the lowest activation energy of 0.2469 eV. | WU Xianming,LI Runxiu,CHEN Shang,HE Zeqiang,and MA Mingyou College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China | 2010 | Rare Metals2010,29,5: | 3 |
| 3 | LiMn_2O_4 thin films derived by rapid thermal annealing and their performance as cathode materials for Li ion battery显示文摘The LiMn2O4 thin film as a cathode material was prepared through solution deposition followed by rapid thermal annealing (RTA). The phase identification and the study of surface morphology were carried out by X-ray diffraction and scanning electron microscopy. Electrochemical properties were examined by cyclic voltammetry, galvanostatic charge-discharge experiments, and electrochemical impedance spectroscopy. The results show that the film prepared by this method is homogeneous, dense, and crack-free. The thin film has a capacity of 38 μAh/(cm2?μm) with the capacity loss of 0.037% per cycle after being cycled for 100 times. The average diffusion coefficient for lithium ions in the RTA-derived LiMn2O4 thin film is 1 × 10?10 cm2?s?1. | WU Xianming HE Zeqiang MA Mingyou XIAO Zhuobing XU Mingfei | 2006 | Rare Metals2006,25,6: | 2 |
| 4 | Increased cycling stability of AlPO4-coated LiMn2O4 for lithium ion batteries显示文摘 | LIU Dongqiang HE Zeqiang | 2007 | Materials Letters2007,61,25: | 1 |
| 5 | Characterization and electrochemical properties of LiMn2O4 thin films prepared by solution deposition显示文摘 | Wu Xianming Ph D He Zeqiang Xu Mingfei Li Xinhai Xiao Zhuobing | 2006 | Journal of Wuhan University of Technology - Mater Sci Ed2006,,3: | 1 |
| 6 | Synthesis and elec- trochemical properties of SnO2-CuO nanocomtposite powders 显示文摘 | Ma Mingyou He Zeqiang Xiao Zhuobing | 2006 | Trans Nonferrous Met S China2006,16,: | 1 |
| 7 | A boronate-modified renewable nanointerface for ultrasensitive electrochemical assay of cellulase activity显示文摘The saccharification of cellulosic biomass to produce biofuels and chemicals is one of the most promising industries for gree n-power production and sustainable development.Cellulase is the core component in the saccharification process.Simple and efficient assay method to determine cellulase activity in saccharification is thus highly required.In this work,a boronate-affinity surface based renewable and ultrasensitive electrochemical sensor for cellulase activity determination has been fabricated.Through bo ronate-sugar interaction,celluloses are attached to the electrode surface,forming the cellulose na nonetwork at the sensing interface.Cellulase degradation can lead to the variation of electrochemical impedance.Thus,electrochemical impedance signal can reflect the cellulase activity.Importantly,via fully utilizing the boronate-affinity chemistry that enables reversible fabrication of cellulose nanonetwork,a renewable sensing surface has been firstly constructed for cellulase activity assay.Thanks to interfacial diffusion process of electrochemical sensor,the product inhibitory effect in the cellulase activity assays can be circumvented.The proposed electrochemical sensor is ultrasensitive for label-free cellulase activity detection with a very simple fabrication process,showing great potential for activity screen of new enzymes in saccharification conversion. | Tianxiang Wei Qiao Xu Caiyu Zou Zeqiang He Yidan Tang Tao Gao Min Han Zhihui Dai | 2021 | Chinese Chemical Letters2021,32,4: | 1 |
| 8 | Comparative Study of LiMn2O4 Thin Films Heat-treated by Conventional and Rapid Thermal Annealing显示文摘阴极材料 LiMn_2O_4 薄电影被常规热退火跟随的答案免职(CTA )(RTA ) 并且快速的热退火作为开始材料用醋酸锂和乙酸锰准备。阶段和表面形态学鉴定被 X 光检查衍射和扫描电子显微镜学做。薄电影的电气化学的性质被循环伏安法,费用分泌物实验,电气化学的阻抗光谱学和潜在的步骤技术执行。结果证明两部薄电影同类、没有裂缝。与 CTA 相比导出薄电影,有更小的谷物的导出的缩放的 RTA 更光滑、稠密。CTA 和 RTA 导出 LiMn_2O_4 薄电影交付 34.5 muAh/(cm^2 中心点妈妈) 和 38 muAh/(cm^2 中心点妈妈) 的能力并且在分别地被骑车 100 次以后每周期显示出 0.050% 和 0.037% 的能力损失。在 CTA 的锂离子的散开系数导出 LiMn_2O_4 thin-filmelectrode 是 4.59 X 10 ^(-11) cm^2/s,和在 RTA 的锂离子的导出一个是 3.86 X10^(-11) cm^2/s。 | Xianming WU Mingyou MA Zhuobing XIAO Zeqiang HE Jianben LIU Mingfei XU | 2006 | Journal of Materials Science & Technology2006,22,3: | 0 |
| 9 | Development of RF Cavities at the Department of RF Cavity in 2019显示文摘The cavity design including RF design and multi-physics analysis of the RFQ for the CAFe(Chinese Accelerator Facility for super-heavy Elements)project have been completed by the end of 2019. | Zhang Zhouli Yue Weiming Li Chenxing Li Chunlong Huang Yulu Wang Ruoxu Xu Xianbo Zhang Shengxue Zhang Shenghu He Tao Yang Lei Xing Chaochao Lin Zeqiang | 2019 | IMP & HIRFL Annual Report2019,,1: | 0 |
| 10 | Optimization of the Coating Process for Nbg_(3)Sn Cavity显示文摘After many years of worldwide exploration and improvement of the post treatment process,niobium(Nb)cavities are now approaching their fundamental limits both in terms of maximum acceleration field and in terms of surface resistance at typical operating temperatures. | Yang Ziqin He Yuan You Zhiming Guo Hao Xiong Pingran Song Yukun Zhang Shengxue Lu Ming Lin Zeqiang Huang Shichun Wu Andong Chu Qingwei Tan Teng Pan Feng Zhang Shenghu | 2019 | IMP & HIRFL Annual Report2019,,1: | 0 |