Facile encapsulation of chromic oxide nanoparticles into heterocyclic ligand derived hierarchical porous N-doped carbon networks for efficient electrochemical nitrogen fixation and Li-storage

文献类型： 外文期刊

第一作者： Zeng, Xia

作者： Zeng, Xia;Zuo, Weipeng;Tang, Chenbo;Hui, Liufu;Ma, Lin;Zheng, Yuyan;Sun, Ruishan;Chen, Jing;Li, Hanjia;Chen, Yajie;Wang, Jing;Zuo, Weipeng;Ma, Lin;Chen, Jing

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关键词： Chromic oxide; Porous carbon; Electrocatalyst; Nitrogen fixation; Anode; Lithium ion battery

期刊名称：INORGANIC CHEMISTRY COMMUNICATIONS （ 影响因子：5.4； 五年影响因子：4.6 ）

ISSN： 1387-7003

年卷期： 2025 年 180 卷

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收录情况： SCI

摘要： A chromium oxide-nitrogen-doped carbon nanocomposite (Cr2O3-NC) possessing hierarchical porous structures has been simply synthesized with a heterocyclic ligand, namely phenanthroline, as both the carbon and nitrogen source. In the Cr2O3-NC composite, Cr2O3 nanoparticles are in situ generated and are firmly anchored onto the Ndoped carbon sheets which are derived from the phenanthroline. This composite has several structural merits inclusive of an enlarged surface area, abundant active centers, and improved electrical conductivity. When employed as a low-cost catalyst for electrocatalytic nitrogen reduction reaction (NRR), Cr2O3-NC demonstrates significantly enhanced and more stable catalytic activity for the nitrogen reduction reaction compared with the bare Cr2O3. It can achieve a substantial ammonia formation rate of 40.32 mu g mg- cat1 h-1 at a potential of -0.2 V vs. RHE, and a high Faradic efficiency of 12.05 %. Moreover, when employed as an anode material for a lithium-ion battery (LIB), Cr2O3-NC also exhibits a remarkably enhanced electrochemical Li-storage property. It is able to exhibit a large reversible Li-storage capacity of 919.2 mAh g- 1 at 100 mA g- 1 in the end of 180 cycles, desirable rate performance of 408.9 mAh g- 1 at 1000 mA g- 1 after 300 cycles and stable cyclability.

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