School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia.
School of Materials Science and Engineering, Henan Polytechnic University, Henan, Jiaozuo, 454000, China.
Angew Chem Int Ed Engl. 2016 Jan 18;55(3):1138-42. doi: 10.1002/anie.201509758. Epub 2015 Dec 2.
Free-standing flexible films, constructed from two-dimensional graphitic carbon nitride and titanium carbide (with MXene phase) nanosheets, display outstanding activity and stability in catalyzing the oxygen-evolution reaction in alkaline aqueous system, which originates from the Ti-N(x) motifs acting as electroactive sites, and the hierarchically porous structure with highly hydrophilic surface. With this excellent electrocatalytic ability, comparable to that of the state-of-the-art precious-/transition-metal catalysts and superior to that of most free-standing films reported to date, they are directly used as efficient cathodes in rechargeable zinc-air batteries. Our findings reveal that the rational interaction between different two-dimensional materials can remarkably promote the oxygen electrochemistry, thus boosting the entire clean energy system.
由二维石墨相氮化碳和碳化钛（具有 MXene 相）纳米片构建的独立柔性薄膜在碱性水体系中催化析氧反应表现出出色的活性和稳定性，这源于作为电活性位点的 Ti-N(x) 基元和具有高亲水性表面的分级多孔结构。凭借这种卓越的电催化能力，与最先进的贵金属/过渡金属催化剂相当，优于迄今为止报道的大多数独立薄膜，它们被直接用作可再充电锌空气电池的高效阴极。我们的研究结果表明，不同二维材料之间的合理相互作用可以显著促进氧气电化学，从而推动整个清洁能源系统的发展。
