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. The results show that relatively uniform nanowires will be formed when the catalyst precursor is iron nitrate; while helical structure or disordered structure will be formed when the catalyst precursor is nickel nitrate or cobalt nitrate. Key words: carbon nanowires; ethanol catalytic combustion technique; catalyst precursor 1 Introduction Quasi-one-dimensional nanomaterial is key aspect......
J. Cent. South Univ. Technol. (2008) 15: 209-213 DOI: 10.1007/s11771-008-0040-9 Preparation of precursor for stainless steel foam ZHOU Xiang-yang(周向阳)1, LI Shan-ni(李善妮)2, LI Jie(李 劼)1, LIU Ye...; Abstract: The effects of polyurethane sponge pretreatment and slurry compositions on the slurry loading in precursor were discussed, and the performances of stainless steel foams prepared from precursors......
; kinetics; precursor 尖晶石型锰酸锂是锂离子电池近几年来兴起的正极材料之一, 它具有合成成本低, 环境污染小, 放电比容量的有效利用率高等优点; 研究开发以锰为主的嵌锂派生物正极材料替代钴酸锂有着重大的使用价值和广阔的应用前景. 关于锰酸锂型派生物合成的动力学研究, 至今未见详尽的报道. 本文作者在研究尖晶石型锰酸锂动力学理论的基础上[1-4], 进一步研究尖......
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J. Cent. South Univ. (2021) 28: 2463-2471 DOI: https://doi.org/10.1007/s11771-021-4739-1 Periodic electromagnetic signals as potential precursor for seismic activity YONG Shan-shan(雍珊珊)1, WANG Xin...-Verlag GmbH Germany, part of Springer Nature 2021 Abstract: Electromagnetic signals may be a promising precursor to seismic activity which has been observed in many case studies in past decades. However......
and 129mA·h/g at 1C rate. Key words: LiFePO4; aqueous precipitation; carbothermal reduction; precursor 1997年Padhi等[1]报道了LiFePO4具有充放电性能, 其理论比容量为170mA·h/g, 放电平台为3.4V, 具有良好的循环性能[2]和热稳定性能...;FePO4的扫描电镜像 Fig.2 SEM image of FePO4 图3 FePO4·2H2O, Li2CO3及C混合料的TG-DTA曲线 Fig.3 TG-DTA curves for mixture of precursor, Li2CO3 and C 曲线可知, 在150℃左右有一个反应吸收峰, 此峰应为FePO4·2H2O失去结晶水. 在......
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Trans. Nonferrous Met. Soc. China 23(2013) 1139-1146 Precursor solution prepared by evaporation deamination complex method for solvent separation of Mo and W by H2O2-complexation Wen-juan GUAN1,2... Processing of Rare Metals, Central South University, Changsha 410083, China Received 21 September 2012; accepted 22 November 2012 Abstract: An novel method on preparation of precursor solution......
composite was prepared by a method of precursor wire with magnetron sputtering. The results show that the fibers combine completely with the base composite and no porosity is detected, and the fibers... and interfacial reaction layer. Key words: titanium matrix composites; SiC fibre; precursor wire; tensile property 与传统钛合金相比,SiC纤维增强钛基复合材料(TMCs)具有更高的比强度,比模量和工作温度,因此,在航空航天领域具有更加广阔的应用前景.将其制成发动机的转子和风扇叶片等部件......
as raw materials, SiC/MoSi2 nanocomposites were fabricated by precursor conversion and reactive hot pressing. The effects of volume fraction of SiC nanoparticles on the mechanical properties.... Key words: SiC/MoSi2 nanocomposite; precursor conversion; reactive hot pressing; mechanical properties  ......