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Metal–Organic Framework Templated Pd@PdO–Co3O4 Nanocubes as an Efficient Bifunctional Oxygen Electrocatalyst
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-01-12 , DOI: 10.1002/aenm.201702734 Hong-Chao Li 1 , Ying-Jie Zhang 1 , Xiao Hu 1 , Wu-Jun Liu 1 , Jie-Jie Chen 1 , Han-Qing Yu 1
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-01-12 , DOI: 10.1002/aenm.201702734 Hong-Chao Li 1 , Ying-Jie Zhang 1 , Xiao Hu 1 , Wu-Jun Liu 1 , Jie-Jie Chen 1 , Han-Qing Yu 1
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The development of high‐efficiency bifunctional electrocatalyst for oxygen reduction and evolution reactions (ORR/OER) is critical for rechargeable metal–air batteries, a typical electrochemical energy storage and conversion technology. This work reports a general approach for the synthesis of Pd@PdO–Co3O4 nanocubes using the zeolite‐type metal–organic framework (MOF) as a template. The as‐synthesized materials exhibit a high electrocatalytic activity toward OER and ORR, which is comparable to those of commercial RuO2 and Pt/C electrocatalysts, while its cycle performance and stability are much higher than those of commercial RuO2 and Pt/C electrocatalysts. Various physicochemical characterizations and density functional theory calculations indicate that the favorable electrochemical performance of the Pd@PdO–Co3O4 nanocubes is mainly attributed to the synergistic effect between PdO and the robust hollow structure composed of interconnected crystalline Co3O4 nanocubes. This work establishes an efficient approach for the controlled design and synthesis of MOF‐templated hybrid nanomaterials, and provides a great potential for developing high‐performance electrocatalysts in energy storage and conversion.
中文翻译：
金属-有机骨架模板化的Pd @ PdO-Co3O4纳米立方体作为一种高效的双功能氧电催化剂
用于氧气还原和放出反应（ORR / OER）的高效双功能电催化剂的开发对于可充电金属空气电池至关重要，这是一种典型的电化学能量存储和转换技术。这项工作报告了一种以沸石型金属有机框架（MOF）为模板合成Pd @ PdO-Co 3 O 4纳米立方体的通用方法。合成后的材料对OER和ORR具有很高的电催化活性，可与商业RuO 2和Pt / C电催化剂媲美，而其循环性能和稳定性却远高于商业RuO 2和Pt / C电催化剂。各种理化特性和密度泛函理论计算表明，Pd @ PdO–Co 3 O 4纳米立方体的良好电化学性能主要归因于PdO与由互连的结晶Co 3 O 4纳米立方体组成的坚固空心结构之间的协同作用。这项工作为MOF模板的杂化纳米材料的受控设计和合成建立了一种有效的方法，并为开发用于储能和转化的高性能电催化剂提供了巨大的潜力。
更新日期：2018-01-12
中文翻译：
金属-有机骨架模板化的Pd @ PdO-Co3O4纳米立方体作为一种高效的双功能氧电催化剂
用于氧气还原和放出反应（ORR / OER）的高效双功能电催化剂的开发对于可充电金属空气电池至关重要，这是一种典型的电化学能量存储和转换技术。这项工作报告了一种以沸石型金属有机框架（MOF）为模板合成Pd @ PdO-Co 3 O 4纳米立方体的通用方法。合成后的材料对OER和ORR具有很高的电催化活性，可与商业RuO 2和Pt / C电催化剂媲美，而其循环性能和稳定性却远高于商业RuO 2和Pt / C电催化剂。各种理化特性和密度泛函理论计算表明，Pd @ PdO–Co 3 O 4纳米立方体的良好电化学性能主要归因于PdO与由互连的结晶Co 3 O 4纳米立方体组成的坚固空心结构之间的协同作用。这项工作为MOF模板的杂化纳米材料的受控设计和合成建立了一种有效的方法，并为开发用于储能和转化的高性能电催化剂提供了巨大的潜力。
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