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VO/Ni/Ni₃N的接口工程,用于电化学尿素辅助生产的异构结构

Jie Wang¹, Cheng Wang², Xiaorong Zhang³

¹College of Chemical Engineering, Shanxi Institute of Science and Technology, Jincheng, Shanxi 048000, China.

Inorganic chemistry

|August 9, 2024

概括

这项研究引入了一种新的VOx/Ni/Ni3N异构催化剂,用于高效的生产. 这种双功能催化剂在性介质中加速进化和尿素氧化反应.

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
可再生能源是可再生能源的来源.

背景情况:

电催化生成对于可再生能源至关重要,但受到缓慢的氧化演化反应 (OER) 的限制.
用尿素辅助的性生产是一个有希望的替代方案,但高效的阳极催化剂仍然是一个挑战.
开发强大的双功能电催化剂,用于演化反应 (HER) 和尿素氧化反应 (UOR),对于高效的水分裂至关重要.

研究的目的:

为了合成和表征一种新的无形/晶体VOx/Ni/Ni3N-异构催化剂.
评估其作为HER和UOR的双功能电催化剂的性能.
用理论计算来研究催化机制.

主要方法:

在碳布上合成无形/晶体VOx/Ni/Ni3N异构.
HER 和 UOR 性能的电化学表征.
密度函数理论 (DFT) 计算以了解反应机制.

主要成果:

VOx/Ni/Ni3N催化剂对HER和UOR表现出极好的双功能活性.
理论计算证实了有利的水解离和H*吸附能量,促进了HER.
集成装置在1.40V的电压下实现了10mAcm-2的电流密度,用于UOR和HER的组合.

结论:

无形/晶体VOx/Ni/Ni3N异构结构是一种高效和强大的双功能电催化剂.
这种催化剂设计为推进用尿素辅助的性生产提供了一个可行的策略.
该研究强调了异构材料在可再生能源应用中的潜力.

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