近日，实验室温梓妍同学、周民杰老师报道了一种新型的热解诱导气体扩散策略合成具有高度分散的单原子Co位点（Co-N-C）的富氮多级多孔碳纳米卷作为电极材料用于电催化氧还原和锂离子电池（LIB）的论文发表在 New Journal Of Chemistry。
The inherent properties, poor exposed active sites and the cumbersome manufacturing process have severely hindered metal-nitrogen-carbon structures in their applications in electric vehicles and stationary energy storage systems. Herein, we report a novel pyrolysis-induced gas diffusion strategy to synthesize nitrogen-rich hierarchical porous carbon nanoscrolls with highly dispersed single-atom Co sites (Co-N-C) as electrode materials for the electrocatalytic oxygen reduction and lithium-ion batteries (LIBs). In this method, Co doped g-C3N4 (Co-CN) is not only used to anchor Co single-atoms to increase the intrinsic active sites, but also served as a sacrificial template to adjust the N content and increase the electrochemically active surface area of the carbon material. Furthermore, self-curling and in situ produced NH3 from Co-CN diffusion effects tune the structural characteristics of the mesoporous carbon nanoscrolls to fully expose the active center and facilitate rapid ion transport. As a result, these carbon nanoscrolls display an enhanced oxygen reduction reaction (ORR) with a half-wave potential of 0.87 V vs. RHE, better than that of the state-of-the-art Pt/C catalyst, and a superior electrochemical performance as an anode material for LIBs, showing a specific capacity of 589.1 mA h g-1 at 2.0 A g-1 even after 900 cycles. Such a finding provides a facile pyrolysis-induced gas diffusion strategy for synthesizing high performance electrode materials.
论文题目：Nitrogen-rich hierarchical porous carbon nanoscrolls with atomically dispersed Co sites for the enhanced oxygen reduction reaction and lithium-ion batteries
论文作者：Ziyan Wen, Yangyang Chen, Da Hu, Binhong He, Minjie Zhou.
