This work aims at understanding the effect of the mesopore volume of ordered mesoporous carbons (OMCs) on their behavior as anodes for Li-ion batteries. To that purpose, the hard-templating method was used as an enabling tool, with the controlled partial etching of the silica template to prepare a series of OMCs with a wide range of mesopore volumes. The formed carbon-silica hybrids were processed into electrodes using a water-based ink preparation route in the presence of xanthan gum as a binder, which retained access to the pores after formation of the electrodes. The pore texture of the latter was compared to that of the starting powders. A very good linear relationship could be evidenced between the mesopore volume of the electrodes and the first insertion capacity of Li-ions. The lithium de-insertion also followed a linear trend, but its behavior was dependent on the final applied potential. Indeed, the higher the mesopore volume, the higher the contribution of de-insertion at elevated voltages. This study further points out the importance of the textural characterization of electrodes (instead of just the starting material) as well as the conditions at which the electrochemical measurements are carried out, especially the maximum applied de-insertion voltage.

这项工作旨在了解有序介孔碳（OMC）的中孔体积对其作为锂离子电池阳极的行为的影响。为此，将硬模板方法用作使能工具，通过对二氧化硅模板进行可控的部分蚀刻来制备一系列具有大范围中孔体积的OMC。在黄原胶作为粘合剂的存在下，使用水基油墨制备路线将形成的碳-二氧化硅杂化体加工成电极，该电极在形成电极后仍可进入孔中。将后者的孔质地与起始粉末的孔质地进行比较。可以证明电极的中孔体积与锂离子的首次插入能力之间有很好的线性关系。锂的去插入也遵循线性趋势，但其行为取决于最终应用的潜力。实际上，中孔体积越大，在高电压下去插入的贡献越大。这项研究进一步指出了电极（而不只是起始材料）的结构表征以及进行电化学测量的条件（尤其是施加的最大去插入电压）的条件的重要性。