孤立的Ni原子催化剂支持Ti3C2T,具有不对称的C-Ni-N结构,用于进化反应
Haosen Yang1, Pengfei Wu1, Jiajing Pei2
1School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China.
Chemical communications (Cambridge, England)
|December 18, 2023
概括
我们开发了一种新型的单原子催化剂,使用MXene (Ti3C2Tx) 上的 (Ni) 进行高效的进化. 这种催化剂在生产气方面表现出色,为先进的能源应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
背景情况:
- 单原子催化剂 (SAC) 提供高原子效率和可调节结构.
- 像Ti3C2Tx这样的MXene材料是催化剂的有希望的支持.
- 进化反应 (HER) 对于清洁能源生产至关重要.
研究的目的:
- 为了合成和表征一种新的基于MXene的单原子催化剂用于HER.
- 为了研究Ni单原子催化剂在N兴奋剂Ti3C2Tx上的催化性能.
- 探索基于MXene的SAC在电化学应用中的潜力.
主要方法:
- 通过原子浸泡和N-doping,在N-doped Ti3C2Tx (Ni SA@N-Ti3C2Tx) 上合成Ni单原子催化剂.
- 进行X射线吸附细结构分析,以确定Ni的局部协调环境.
- 电化学测试以评估演化反应 (HER) 的性能.
主要成果:
- 在孤立的Ni物种中成功合成Ni SA@N-Ti3C2Tx.
- 描述显示了局部Ni-N1C1和不和的C-Ni-N桥梁配置.
- 在10 mA cm-2.0的低超电位63 mV时,实现了优异的HER性能.
结论:
- 开发的Ni SA@N-Ti3C2Tx显示出优异的HER活性.
- 原子的独特协调结构有助于提高催化性能.
- 这项研究强调了基于MXene的SACs在高效气生产方面的潜力.
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