Abstract

Self-activation is an ecological friendly and inexpensive process for the fabrication of large scale activated carbon (AC), which precludes the use of activating agents and takes advantage of the emitted gases from the simple pyrolysis of pine wood to stimulate the converted carbon. The tailoring of process parameters such as dwelling time assists in optimizing the pore size distribution comprised of meso- and micropores, offering favorable physical properties including specific surface area of 2738 m2g!1 and specific pore volume of 2.209 cm3g!1 for superior electrochemical performance of Li-ion batteries. The ACbased anode shows a high cycling stability with a reversible specific capacity of 384mAhg!1 at 1C after 200 cycles, which is close to the theoretical specific capacity of graphite. The finding suggests that the self-activation process, a green, scalable, and efficient process, has great potential to be developed into next-generation high-performance electrode materials for electrochemical energy storage devices.

Authors

Changlei Xia+, Chiwon Kang+,[b] Mumukshu D. Patel,Liping Cai,Bharat Gwalani,Rajarshi Banerjee,Sheldon Q. Shi, and Wonbong Choi

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