Synthesis of hierarchically porous carbon monoliths with highly ordered microstructure and their application in rechargeable lithium batteries with high-rate capability
Synthesis of hierarchically porous carbon monoliths with highly ordered microstructure and their application in rechargeable lithium batteries with high-rate capability
复制标题
DOI：
10.1002/adfm.200601152
复制
发表时间：
2007-08-13
影响因子：
19
通讯作者：
Maier, Joachim
中科院分区：
文献类型：
--
作者：
Hu, Yong-Sheng;Adelhelm, Philipp;Maier, Joachim
在本文中，我们报告了锂存储在具有相对较高的类石墨有序碳结构的分级多孔碳整料。以介孔/大孔二氧化硅为模板剂，中间相沥青为前驱体，成功制备了同时具有介孔和大孔的宏观炭块体。由于高孔隙率（提供离子传输通道）和高电子电导率（约100%），0.1 S cm（-1）），这种具有混合导电3D网络的多孔碳整料如果用作电化学锂电池中的阳极材料，则显示出上级高倍率性能。关于其在电池中的适用性的未来研究的挑战是降低不可逆容量。
In this paper, we report on Li storage in hierarchically porous carbon monoliths with a relatively higher graphite-like ordered carbon structure. Macroscopic carbon monoliths with both mesopores and macropores were successfully prepared by using meso-/macroporous silica as a template and using mesophase pitch as a precursor. Owing to the high porosity (providing ionic transport channels) and high electronic conductivity (ca. 0.1 S cm(-1)), this porous carbon monolith with a mixed conducting 3D network shows a superior high-rate performance if used as anode material in electrochemical lithium cells. A challenge for future research as to its applicability in batteries is the lowering of the irreversible capacity.