Heteroatom (N or S)-doped graphene with high surface area is successfully synthesized via thermal reaction between graphene oxide and guest gases (NH 3 or H 2 S) on the basis of ultrathin graphene oxide-porous silica sheets at high temperatures. It is found that both N and S-doping can occur at annealing temperatures from 500 to 1000 ° C to form the different binding confi gurations at the edges or on the planes of the graphene, such as pyridinic-N, pyrrolic-N, and graphitic-N for N-doped graphene, thiophenelike S, and oxidized S for S-doped graphene. Moreover, the resulting N and S-doped graphene sheets exhibit good electrocatalytic activity, long durability, and high selectivity when they are employed as metal-free catalysts for oxygen reduction reactions. This approach may provide an effi cient platform for the synthesis of a series of heteroatom-doped graphenes for different applications.

Hollow carbon nanospheres are synthesized via the hydrothermal carbonization of glucose in the presence of nanosized latexes templates. The resulting disordered carbon hollow nanospheres exhibits excellent characteristics in terms of reversible capacities, cycling performance, and rate capability for application as an anode material in Na‐based batteries.

Nitrogen-doped activated porous carbon fibres (ACFs) were prepared as anode materials for Na-ion batteries. They exhibit excellent electrochemical performance, especially rate performance. The excellent rate performance is ascribed to the fibre-like morphology and the facilitated charge transfer. The influence of nitrogen functionalities on charge transfer and electrochemical performance of N-doped carbon anodes for Na ion batteries is discussed.

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