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3篇 您的检索式:作者名="Daichun Tang"
    题名 作者 年代 出处 被引量
1LiCoO2-catalyzed electrochemical oxidation of Li2CO3显示文摘锂碳酸盐(李 2 公司 3) 在锂(李) 的各种各样的类型是很普通的电池。作为一节 Li 空气电池的阴极上的氧减小反应的一个绝缘的副产品,它不能在 4.75 V 下面被分解(对李 +/Li) 在期间再装并且导致大极化,低 coulombic 效率,和电池的低精力变换效率。在另一方面,从阴极材料的超过 10% 李离子在一节 Li 离子电池的化学形成期间被消费,导致低 coulombic 效率或精力密度。因而,锂赔偿变得必要与更高的精力密度和更长的周期生活认识到 Li 离子电池。因此,减少李 2 公司 3 是显著地重要的。处理这些问题,我们证明 nanoscaled LiCoO 2 罐头的增加有效地降低这个潜力到 4.25 V。根据物理描述和电气化学的评估,我们建议李 2 公司 3 。这些调查结果将帮助 Li 空气电池的极化到减少并且为 Li 离子电池为有效的李赔偿提供有效策略,它能显著地改进他们的精力密度并且增加他们的精力变换效率和周期生活。Lijuan Fan Daichun Tang Deyu Wang Zhaoxiang wang Liquan Chen 2016Nano Research2016,9,12:3
2Preparation of spherical spinel LiCr_(0.04)Mn_(1.96)O_4 cathode materials based on the slurry spray drying method显示文摘Regular spherical chromium doped spinel lithium manganese oxides (LiCr0.04Mn1.96O4) with an average particle size of about 20 μm were prepared by the slurry spray drying process. The materials were compared with non-spherical LiCr0.04Mn1.96O4 materials prepared by the common drying process, and all materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), laser particle analyzer and Brunauer-Emmett-Teller (BET) specific surface area test. Electrochemical performances of these cathode materials were studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and Li/LiCr0.04Mn1.96O4 battery test. The results show that the spherical active material is single spinel structure, compact, and with narrow particle size distribution and low BET specific surface area. Compared with the non-spherical material, the spherical material prepared by the spray drying process shows a lower electrochemical impedance, a fewer electrochemical polarization and a better charge/discharge rate capability and capacity retention at elevated temperatures.JIANG Qinglai HU Guorong PENG Zhongdong DU Ke CAO Yanbing TANG Daichun 2009Rare Metals2009,28,6:3
3Investigation on the electrochemical activation process of Li_(1.20)Ni_(0.32)Co_(0.004)Mn_(0.476)O_2显示文摘The lithium-rich layered oxides are one of the most attractive cathode materials for lithium-ion batteries.Here,two types of Li1.20Ni0.32Co0.004Mn0.476O2 were synthesized using Li2CO3 and LiOH as lithium sources.An electrochemical activation process occurs in Li1.2Ni0.32Co0.004Mn0.476O2 prepared from Li2CO3(LLO-1),while no obvious activation in Li1.2Ni0.32Co0.004Mn0.476O2 prepared from LiOH(LLO-2) is observed.Via advanced scanning transmission electron microscopy(STEM),we found that Li2MnO3-like structure is rich in the surface region of LLO-2.The study provides a direct explanation for the electrochemical activation of lithium-rich materials.The sample with more LiMO2-like phase at the surface region shows a better cycling performance.It is likely that more LiMO2-like phase at the surface region could stabilize the interface and improve the cycling performance of the Li-rich cathode materials.Daichun Tang Daotan Liu Yanyan Liu Zhenzhong Yang Liquan Chen 2014Progress in Natural Science:Materials International2014,24,4:0
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