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优化了3D打印电极的泡动力学,以提高水分的性能

Zhijie Feng^1,2, Hao Wang¹, Nannan Jiang^1,2

¹State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.

ACS applied materials & interfaces

|February 27, 2025

概括

具有有序通道的高度粗的3D打印电极增强了泡动力学,以实现高效的水电解. 这一策略提高了催化性能和稳定性,显示了实际应用的巨大潜力.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

水电解中的缓慢气体进化阻碍了催化剂的性能,因为它阻断了活性位点.
有效的气泡分离和运输对于优化水电解效率至关重要.

研究的目的:

开发新的三维 (3D) 打印 (3DPNi) 电极,增强表面粗性和有序流通道.
改善气泡动力学,特别是脱离和运输,以提高水电解中的催化性能.

主要方法:

制造具有有序流通道结构的高度粗的3D打印Ni电极.
表面性质的表征,包括水友和恐怖的特征.
对氧化演化反应 (OER) 和整体水分的电化学性能测试.
计算流体动力学 (CFD) 模拟和视觉实验来分析泡动力学.

主要成果:

3DPNi电极表现出增强的水性和气性特性,减少泡凝聚和加速脱落.
有序的流通道有效地防止了泡陷,促进了快速的泡运输.
对于OER,NiFe-LDH涂层的3DPNi电极在100 mA cm−2时实现了238 mV的低超电位.
NiFe-LDH/3DPNi电极在1 A cm-2的整体水分裂中表现出极好的稳定性,需要1.86 V.

结论:

开发的3DPNi电极具有工程表面粗度和流量通道,可以显著优化泡动态.
这种优化使得水电解的催化性能和稳定性大大提高.
这些发现突显了这些先进电极在实际电化学应用中的潜力.

关键词:

通过3D打印打印3D打印.泡行为行为顺序排序的流量通道.超级水友性/空气厌恶性水的分裂是水的分裂.

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