空心多面体阵列由 CoO 纳米晶集合体组成，负载在蜂窝状碳杂化材料上，用于促进高活性和稳定的氧演化。
Hollow Polyhedral Arrays Composed of a CoO Nanocrystal Ensemble on a Honeycomb-like Carbon Hybrid for Boosting Highly Active and Stable Evolution Oxygen.
机构信息
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , China.
College of Traffic Civil Engineering , Shandong Jiaotong University , Jinan 250023 , China.
出版信息
Inorg Chem. 2019 Mar 18;58(6):3683-3689. doi: 10.1021/acs.inorgchem.8b03236. Epub 2019 Feb 27.
We synthesize hollow polyhedral arrays composed of honeycomb-like nanosheets of CoO nanocrystals imbedded on carbon quantum dots (CQDs)- and nitrogen-codoped carbon matrix via a facile in situ air oxidation pyrolysis for CQDs-incorporated metal-organic framework polyhedral arrays. The function of CQDs hollowing and forming porous nanosheet shells was found. The resulting hierarchical architecture displays excellent oxygen evolution reaction activity with a low overpotential of 301 mV to drive 100 mA cm in 1.0 M KOH and long-playing durability in oxygen evolution. The high performance can be ascribed to its highly dispersed CoO nanocrystals, CQDs and nitrogen codoping, internal cavities, and hierarchical pore system.
我们通过简便的原位空气氧化热解合成了由嵌入在碳量子点 (CQDs) 和氮掺杂碳基质中的 CoO 纳米晶的蜂窝状纳米片组成的空心多面体阵列，用于 CQDs 嵌入的金属有机骨架多面体阵列。发现了 CQDs 空心化和形成多孔纳米片壳的功能。所得的分级结构显示出优异的析氧反应活性，在 1.0 M KOH 中驱动 100 mA cm 需要 301 mV 的低过电势，并且在析氧中具有长耐久性。高性能可归因于其高度分散的 CoO 纳米晶体、CQDs 和氮共掺杂、内腔和分级孔系统。
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