具有P,N-编的碳封闭双金属/化物与定制电子结构的协同工程,以促进尿素电氧化
Ying Wu1, Jingfei Kang1, Houde Liao2
1College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China.
Journal of colloid and interface science
|December 29, 2023
概括
这项研究开发了先进的双金属化物电催化剂,用于高效的尿素氧化反应 (UOR). 这些催化剂表现出了卓越的性能和稳定性,为节能气生产铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 可再生能源可再生能源是可再生能源.
背景情况:
- 由于协同效应,双金属化物显示出作为电催化剂的前景.
- 尿素氧化反应 (UOR) 是生产的关键过程.
研究的目的:
- 为了合成和表征新型P,N-合碳封装的/化物 (NiCoP@PNC) 在P-合碳化木纤维 (PCWF) 上.
- 评估NiCoP@PNC/PCWF在性条件下对UOR的电催化性能.
- 评估电解器中的UOR在整体尿素分解方面的潜力,并将其与传统系统进行比较.
主要方法:
- 对NiCo-MOF-74衍生前体的同步碳化和化.
- 将合成的化物在P-doped碳化木纤维上.
- 电化学表征,包括循环电压测量和时测量.
- 使用密度函数理论 (DFT) 的理论分析.
主要成果:
- NiCoP@PNC/PCWF表现出优异的UOR电催化性能,在1.34V与RHE的电压下达到50mAcm-2,稳定时间超过72小时.
- 使用UOR的电解器在1.50V时实现了50mAcm-2,比HER的RRRR系统低230mV.
- 理论计算证实了Co和Ni之间的协同效应,优化了电子结构以增强UOR.
结论:
- 在NiCoP@PNC/PCWF中结构和电子调制的协同策略导致了优异的UOR电催化活性.
- 这种催化剂设计为开发高效和稳定的电催化剂,用于节能生产提供了有前途的途径.
- 在整体尿素分解中使用UOR为高效的能量转化提供了一个可行的替代方案.
关键词:
电催化剂是一种电催化剂.MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF有协同效应的效应.尿素氧化反应是尿素的氧化反应.木材纤维木材纤维是一种纤维.更多相关视频
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