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Prof. Feng Wang’s team published research paper in Angew. Chem. Int. Ed.

Recently, Prof. Wang’s team published research paper titled “Two-dimensional conjugated aromatic networks as high-site-density and single-atom electrocatalysts towards oxygen reduction reaction” in Angew. Chem. Int. Ed.

The controllable design of single-atom electrocatalysts with high-site-density and enhanced mass/volume specific activity holds tremendous potential for clean energy devices involving the oxygen reduction reaction (ORR). Herein, two-dimensional conjugated aromatic networks (CAN) with ultra-thin conjugated layers (ca. 3.5 nm) and high single-metal-atom-site density (mass content of 10.7 wt.%, and 0.73 metal atoms per nm2) are prepared via a facile pyrolysis-free route involving a one-step ball milling of the solid-phase-synthesized polyphthalocyanine. These materials display outstanding ORR mass activity of 47 mA mgcat.–1 represents 1.3- and 6.4-fold enhancements compared with Pt and Pt/C in benchmark Pt/C, respectively. Moreover, the primary Zn−air batteries constructed with CAN as an air electrode demonstrate a mass/volume power density of 880 W gcat.–1/615 W cmcat.–3 and stable long-term operation for 100 h. Our strategy offers a new way to design high-performance electrocatalysts with atomic precision for use in other energy storage and conversion applications.

Previously related publications by Prof. Wang’s team: Angew. Chem. Int. Ed. 2018, 57, 9038-9043; Nano Energy 2016, 30, 426-433; Nano Energy 2017, 34, 338-343; Small 2017, 13, 1604290; Small 2016, 12, 4193-4199; Catal. Sci. Technol. 2017, 7, 1529-1536, etc.

 

Shaoxuan Yang, doctoral student, is the first author of the paper. Prof. Feng Wang, A. Prof. Zhengping Zhang and Prof. Liming Dai, are the corresponding authors. Beijing University of Chemical Technology is the first research institution. This work was financially supported by the National Natural Science Foundation of China, the National Key R&D Program of China, the Start-Up Fund for Talent Introduction of Beijing University of Chemical Technology, the Fund of High-Performance Carbon-Based Electrodes for Energy Storage and the Fundamental Research Funds for the Central Universities.

 

Article Information:

Shaoxuan Yang, Yihuan Yu, Meiling Dou, Zhengping Zhang*, Liming Dai* and Feng Wang*, Two-dimensional conjugated aromatic networks as high-site-density and single-atom electrocatalysts towards oxygen reduction reaction, Angew. Chem. Int. Ed. DOI: 10.1002/anie.201908023

https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201908023

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