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率性能的目的.实验中运用原子层沉淀技术(ALD)可以精确控制覆盖层的厚度.在制得的LiMn2O4/石墨烯复合材料表面包覆了一层6个原子层厚度的ZnO薄膜,ZnO层一方面可以消耗充放电过程中电解液产生的HF,抑制Mn的溶解,另一方面可以提高LiMn2O4的循环稳定性,提高电极材料的寿命.在SEM和TEM扫描下,合成的纳米复合材料呈现出类似"三明治"状的结构,此种结构能有效提升电极材料的容量和电导率... V, FIRSOV A A. Electric field effect in atomically thin carbon films[J]. Science, 2004, 306(5696): 666-669. [3] GEIM A K. Science, graphene: Status and prospects[J]. Science, 2009, 324(5934......
is the diameter of crack, whose shape is assumed to be equivalent to a thin disc; n is the unit direction vector of the crack; E(n, r) is the joint probability density function of n and r; and Ω is the entire......
specimens. Based on KIC (fracture toughness of Mode 1) validation (Table 7), it is observed that the obtained results are not valid, and this difference may be due to the thin plates and the brittle fracture......
of the control input signal in a thin boundary layer neighboring the switching surface, as follows: (41) In Figure 12......
or ethylene glycol as a base fluid and nanoparticles of Al2O3, TiO2 and ZnO in different volume fractions. The use of those nanoparticles enabled significant enhancements in the thermal conductivity... for forming a thin layer on the surface of the wick, and this layer enabled the enhancement of the capillary transport along the heat pipe. The heat transfer could thus be higher than the expected by the simple......
with asymptotic methods. LEE et al [2] extended the model in Ref. [1] to the non-isothermal case for a thin vertical cylinder. These investigations were however restricted to Newtonian viscous flows......
of how the machined surface pattern would affect the thin interfacial oxide layer during the manufacturing process. It is believed that stability of such oxide layer depends on magnitude......
intercalated with thin sandstones and dolostones. The GD debris flow occurred in Tongzilin Gully located in forested mountain areas (27°28′27.47″N/ 102°29′03.45″E) on 8 August, 2017 and resulted in 25 deaths......
, 2013, 61(5): 1809-1819. [64] CALIGNANO F, CATTANO G, MANFREDI D. Manufacturing of thin wall structures in AlSi10Mg alloy by laser powder bed fusion through process parameters[J]. Journal of Materials......
; (33) 式中:kBT(注:下标B为Buckling的首写字母,表示"屈曲";T为Thin的首写字母,表示"细长")是由修正正应力而引入的常数,取决于多孔体的制备工艺条件,因而集中了结构缺陷,孔隙具体形状和大小分布等因素的综合作用. 由于弹性模量E是材料的固有参量......