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In article number 1700238, Jianhua Sun, Xiaopeng Li, and co‐workers, report a hollow cobalt and nitrogen co‐doped carbon nanopolyhedra catalyst derived from a MOF that effectively traps O2 molecules available in the electrolyte. The hollow structure enables significant improvement in oxygen reduction reaction kinetics and stability. New insights into the spatial confinement effect and new guidelines...
A novel strategy for the fabrication of hollow Co and N‐codoped carbon nanopolyhedra (H‐CoNC) from metal–organic framework (MOF) using in situ evaporation of ZnO nanosphere templates is proposed. The excess Zn supply during the pyrolysis process is found beneficial in terms of high nitrogen (≈9.75 at%), relatively homogenous CoN bonding, and the electrochemically accessible hierarchical porous system...
3D graphene aerogel (GA) integrated with active metal or its derivatives has emerged as a novel class of multifunctional constructs with range of potential applications. However, GA fabricated by self‐assembly in the liquid phase still suffers from low conductivity and poor knowledge related to spatial active phase distribution and 3D structure. To address these issues, a facile approach involving...
Xiaopeng Li, Yuhan Sun, and co‐workers report on the 3D metallic active phase distribution in a self‐assembled composite graphene aerogel. Unraveled by X‐ray μCT presented in article 1700041, the interconnected 3D silver networks hold potential to achieve high oxygen reduction activity and ultra‐high rate performance in Zn‐air batteries.
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