垂直堆叠的W/W2C异质连接具有高的电催化能力,用于广泛的pH范围内的演化反应
Manyun Wang1, Xiaodong Meng2, Wenbin Gong3
1State Key Laboratory of Organic-Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road East, Chaoyang District, Beijing 100029, China.
Journal of colloid and interface science
|September 16, 2024
概括
一种新的W/W2C@N-PGC电催化剂提供了高效和稳定的演化反应 (HER),用于清洁的生产. 这种催化剂利用W/W2C异质连接,在各种pH水平上表现良好.
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
- 催化剂是一种催化剂.
背景情况:
- 演化反应 (HER) 是从可再生能源中生产清洁的关键.
- 当前的HER催化剂面临着高成本和低效率的挑战.
- 开发先进的电催化剂对于实用的HER技术至关重要.
研究的目的:
- 开发一种高性能电催化剂,用于广泛的pH范围内的演化反应 (HER).
- 研究一种新型异构的W/W2C电催化剂,嵌入N-化多孔石墨碳 (W/W2C@N-PGC).
- 用密度函数理论 (DFT) 的计算来阐明催化机制.
主要方法:
- 通过简单的单方法合成W/W2C@N-PGC,包括冷干燥和热解.
- 密度函数理论 (DFT) 计算,以了解W/W2C异质连接的作用.
- 在性,酸性和中性电解质中进行电化学表征,以评估 HER 的性能.
主要成果:
- W/W2C@N-PGC催化剂对HER.表现出极好的电催化活性.
- 在1.0 M KOH中,在10 mA cm−2时达到102 mV的低超电位.
- 在HER过程中表现出长期稳定性,长达24小时.
- DFT的计算证实了W/W2C异质连接在促进HOH债券裂变和H2排放中的作用.
结论:
- W/W2C@N-PGC催化剂在不同的pH条件下是HER的高效电催化剂.
- 在电催化剂中,异质连接工程对于提高HER性能至关重要.
- 合成方法可以扩展到其他能量转换反应,如二氧化碳减排和氧气反应.
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