Mesoporous wormholelike carbon with controllable nanostructure for lithium ion batteries application

• Wormholelike carbon (WMC) with controllable nanostructure is prepared by sol–gel method.
• The reversible capacity of WMC is much higher than that of many other reported nanocarbons.
• The effect of pore diameter on Li storage capacity is investigated.

A class of mesoporous wormholelike carbon (WMC) with controllable nanostructure was prepared by sol–gel method and then used as the anode material of lithium-ion batteries. Based on the experimental results, it is found that the nanostructure of the as-prepared WMC plays an important role in the electrochemical performances. A suitable mesopore size is necessary for a high performance carbon-based anode material since it can not only guarantee effective mass transport channels but also provide large surface area. As a result, F30 with a mesopore size of 4.4 nm coupled with high surface area of 1077 m2 g−1 shows a reversible capacity of 630 mAh g−1, much higher than commercial graphite and many other reported nanocarbons.

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