| 氮掺杂碳负载表面部分暴露的CoFe2O4用于高性能催化析氧反应 |
| |
| 引用本文： | 李创,王宇,张亚男,候利强,刘希恩. 氮掺杂碳负载表面部分暴露的CoFe2O4用于高性能催化析氧反应[J]. 复合材料学报, 2023, 40(3): 1552-1559. DOI: 10.13801/j.cnki.fhclxb.20220510.002 |
| |
| 作者姓名： | 李创 王宇 张亚男 候利强 刘希恩 |
| |
| 作者单位： | 1.青岛科技大学 化工学院，青岛 266042 |
| |
| 基金项目： | 山东省泰山学者基金(ts201712045) |
| |
| 摘 要： | 开发价格低廉、储量丰富、高效的析氧反应(OER)电催化剂对于可持续能源的转换具有重要意义。目前，虽然尖晶石型二元过渡金属氧化物表现出了很有潜力的OER活性，但其固有的低电导率一定程度上降低了其电化学性能。本文提出了一种通过金属有机框架(MOF)辅助合成表面部分暴露的CoFe2O4纳米颗粒负载在氮掺杂碳基底上(CoFe2O4@NC)的方法，且CoFe2O4@NC具有优良的催化活性。在碱性介质中，CoFe2O4@NC表现出了优异的OER活性，在10 mA·cm-2电流密度的过电势仅为1.517 V,Tafel斜率为87 mV·dec-1，这是由于CoFe2O4@NC具有足够暴露的活性位点和较高的电子转移能力。此外，CoFe2O4@NC能稳定运行15 h，具有出色的稳定性。该工作将为探索经...
|
| 关 键 词： | CoFe2O4纳米颗粒 部分暴露 碳基底 析氧反应 高活性 电催化 |
| 收稿时间： | 2022-03-28 |
Partially surface exposed CoFe2O4 anchored on N-doped carbon endows its high performance for oxygen evolution reaction |
| |
| Affiliation: | 1.College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China2.College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China |
| |
| Abstract: | The exploration of earth-abundant and high-efficiency electrocatalysts for the oxygen evolution reaction (OER) is of great significant for sustainable energy conversion applications. Although spinel-type binary transition metal oxides represent a class of promising candidates for water oxidation catalysis, their intrinsically inferior electrical conductivity could decrease their electrochemical performances to some extent. Here, we present an metal-organic frame (MOF)-assisted synthesis of partially surface exposed CoFe2O4 nanoparticles anchored on nitrogen doped carbon substrate (NC), which can act as the superior catalyst for OER. With enough exposure of active sites and high electron transfer capability and durability, CoFe2O4@NC show a low overpotential of 1.517 V at 10 mA · cm?2 with a Tafel slope of 87 mV · dec?1 in alkaline medium. Moreover, it delivers an outstanding stability with small degradation after 15 h operation. The present work would open a new avenue for the exploration of cost-effective and efficient OER electrocatalysts to substitute noble metals for various renewable energy conversion applications. |
| |
| Keywords: | |
|
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载免费的PDF全文 |
|
