Tungsten nitride atomic clusters embedded two-dimensional g-C3N4 as efficient electrocatalysts for oxygen reduction reaction
Tungsten nitride atomic clusters embedded two-dimensional g-C3N4 as efficient electrocatalysts for oxygen reduction reaction
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嵌入二维 g-C3N4 的氮化钨原子簇作为氧还原反应的高效电催化剂
DOI：
10.1016/j.carbon.2020.07.037
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发表时间：
2020-11
期刊：
影响因子：
10.9
通讯作者：
Lifeng Cui
中科院分区：
文献类型：
--
作者：
Nannan Wang;Xiaodong Chen;Jutao Jin;Peng Zhang;Xiaochang Qiao;Lifeng Cui
氧还原反应（ORR）的无pt电催化剂具有广泛的应用价值，但其活性和稳定性不足，不能满足工业要求。具有pt样电子结构的氮原子团簇嵌入导电且稳定的g- c3n4中，为提高ORR性能提供了另一种途径。在此，我们报告了一种简单的原位骑乘方法，以获得装载在二维导电g-C3N4（WN@g-C3N4）催化剂上的独特的氮化钨原子簇。因此，在设计的二维g- c3n4层上生成的三相氮化WN及其高度分散的原子团簇是优异的ORR性能的主要原因。尤其对于WN@g -C3N4-750，起始电位和半波电位分别为0.92和0.86 Vvs。与Pt/C催化剂得到的结果相同。结果表明，三相氮原子簇作为活性位点，对电催化性能有积极影响。我们认为WN@g-C3N4catalyst具有优越的电催化活性，具有取代商用Pt/C催化剂的强大潜力。
Pt-free electrocatalysts for the oxygen reduction reaction (ORR) are valuable with a wide range of applications, but their insufficient activities and stabilities cannot satisfy the commercial requirement. Nitride atomic clusters with the Pt-like electronic structure embedded the conductive and stable g-C3N4offers an alternative route to promote ORR performance. Herein, we report a facile andin-situnitriding method to obtain a unique tungsten nitride atomic cluster loaded on the two-dimensional conductive g-C3N4(WN@g-C3N4) catalyst. In this regard, both the generated cubic-phase WN and its high-dispersed-atomic clusters over the designed 2D g-C3N4layer are mainly responsible for the excellent ORR performance. Especially for WN@g–C3N4–750, the onset potential and half-wave potential were 0.92 and 0.86 Vvs. RHE respectively, identical to the results obtained for the Pt/C catalyst. The results demonstrated that the cubic-phase WN atomic clusters act as active sites, which positively influences the electrocatalytic performance. We believe that the WN@g-C3N4catalyst with the superior electrocatalytic activity has a strong potential to replace the commercial Pt/C catalyst.
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影响因子：
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DOI：
10.1016/b978-0-12-813926-4.00035-5
发表时间：
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期刊：
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影响因子：
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作者：
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