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Cobalt/Iron(Oxides) Heterostructures for Efficient Oxygen Evolution and Benzyl Alcohol Oxidation Reactions
ACS Energy Letters ( IF 19.3 ) Pub Date : 2018-07-11 00:00:00 , DOI: 10.1021/acsenergylett.8b01071 Yiyin Huang 1 , Rui Yang 1 , Ganesan Anandhababu 1 , Jiafang Xie 1 , Jiangquan Lv 1 , Xiaotao Zhao 1 , Xueyuan Wang 1 , Maoxiang Wu 1 , Qiaohong Li 1 , Yaobing Wang 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2018-07-11 00:00:00 , DOI: 10.1021/acsenergylett.8b01071 Yiyin Huang 1 , Rui Yang 1 , Ganesan Anandhababu 1 , Jiafang Xie 1 , Jiangquan Lv 1 , Xiaotao Zhao 1 , Xueyuan Wang 1 , Maoxiang Wu 1 , Qiaohong Li 1 , Yaobing Wang 1
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Design of advanced electrocatalysts for oxygen evolution reaction (OER) and the alternative reaction is of prime importance to splitting water for hydrogen generation. Herein, cobalt/iron(oxides) heterostructures with interface engineering for regulating surface structure properties toward enhanced OER and benzyl alcohol oxidation (BAO) are demonstrated. Interface engineering triggers generation of local crystallinity and defective oxygen, enabling the material to export 50 mA cm–2 for OER at an overpotential of 329 mV and continuous 20 h of operation without apparent decay. Further, BAO is also boosted on the heterostructures, further propelling water splitting to export 10 mA cm–2 at a voltage of only 1.42 V. Theoretical calculation reveals that the defective sites dominated by interfaces facilitate adsorption/dissociation of intermediates during electrocatalysis. The findings in this work place Fe/Co(oxides) heterostructures as an excellent bifunctional OER/BAO catalyst and also provide a promising interface-regulated electrocatalysis strategy for development of other advanced heterostructures toward various applications.
中文翻译：
钴/铁（氧化物）异质结构可有效释放氧气和苄醇氧化反应
设计用于氧气析出反应（OER）和替代反应的高级电催化剂对于分解水以产生氢气至关重要。在本文中，展示了具有界面工程的钴/铁（氧化物）异质结构，用于调节表面结构性能以增强OER和苯甲醇氧化（BAO）。界面工程触发了局部结晶度和氧气缺陷的产生，使该材料能够以329 mV的超电势输出50 mA cm –2的OER，并连续工作20 h而不会出现明显的衰减。此外，BAO还增强了异质结构，进一步推动了水分解以输出10 mA cm –2在仅1.42 V的电压下。理论计算表明，界面主导的缺陷位在电催化过程中促进了中间体的吸附/解离。在这项工作中的发现将铁/钴（氧化物）异质结构作为一种出色的双功能OER / BAO催化剂，还为开发面向各种应用的其他高级异质结构提供了一种有前途的界面调节电催化策略。
更新日期：2018-07-11
中文翻译：
钴/铁（氧化物）异质结构可有效释放氧气和苄醇氧化反应
设计用于氧气析出反应（OER）和替代反应的高级电催化剂对于分解水以产生氢气至关重要。在本文中，展示了具有界面工程的钴/铁（氧化物）异质结构，用于调节表面结构性能以增强OER和苯甲醇氧化（BAO）。界面工程触发了局部结晶度和氧气缺陷的产生，使该材料能够以329 mV的超电势输出50 mA cm –2的OER，并连续工作20 h而不会出现明显的衰减。此外，BAO还增强了异质结构，进一步推动了水分解以输出10 mA cm –2在仅1.42 V的电压下。理论计算表明，界面主导的缺陷位在电催化过程中促进了中间体的吸附/解离。在这项工作中的发现将铁/钴（氧化物）异质结构作为一种出色的双功能OER / BAO催化剂，还为开发面向各种应用的其他高级异质结构提供了一种有前途的界面调节电催化策略。
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