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锂离子二次电池已成为日常生活中不可或缺的一部分, 而现有的锂离子电池并不能完全满足电动汽车领域高能量密度的要求, 发展具有高能量密度的电极材料是解决问题的关键. 硅负极因理论比容量高、 脱嵌锂电位低、 来源广泛等优点而备受关注, 但其巨大的体积变化(约300%)以及低的首次库仑效率阻碍了其商业应用. 预锂化技术可以有效提高首次库仑效率、 实现高性能硅基负极, 本文阐述了预锂化的科学必要性, 介绍了各种预锂化的方法以及优缺点, 最后对硅基负极预锂化应用的挑战和前景进行了展望. 相似文献
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A one-dimensional (1D) Z conformation coordination polymer, [Ag(bix)(NO3)(H2O)]n was obtained by the reaction between AgNO3 and flexible ligand of 1,4-bis(imidazol-1-ylmethyl)-benzene under hydrothermal conditions. It crystallizes in triclinic with space group P1. The crystallographic data of the compound are: a=0.777 1(2) nm, b=1.043 4(3) nm, c=1.082 7(3) nm, α=71.403(4)°, β=80.946(5)°, γ=88.794(4)°. The 1D chainlike structure was connected by π-π interaction between phenyl rings, leading to a 2D layered network. The lattice water and the NO3- anions were involved between the layers, therefore the 2D layered structure further extended to an intricate 3D framework. CCDC: 257100. 相似文献
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