Nife mof
WebbDensity functional theory (DFT) calculations confirmed that tuning the coordination environment of Ni in NiFe-MOF by incorporating the non-bridging FcCA ligands could boost the formation of more active catalytic sites, which can simultaneously enhance the electronic conductivity and accelerate OER kinetics. Webb4 mars 2024 · Designing efficient electrocatalysts based on metal–organic framework (MOF) nanosheet arrays (MOFNAs) with controlled active heterointerface for the oxygen evolution reaction (OER) is greatly ...
Nife mof
Did you know?
Webb本研究通过MOFs结构导向策略合成了边缘位点丰富的NiFe水滑石,该材料表现出了优异的OER活性和稳定性。 通过同步辐射X射线吸收精细结构谱、电子自旋共振等表征揭示了在边缘位点丰富的NiFe水滑石中存在大量的铁空位和氧空位。 密度泛函理论(DFT)计算表明,存在的氧空位和铁空位能有效地调节水滑石的电子结构,优化其对析氧反应中间体的 … Webb25 sep. 2024 · 层状结构NiFe-LDH催化剂在不同电解液中的电化学性能和机理研究。 为进一步揭示层状结构NiFe-LDH催化剂在循环过程中活性位点数量增加的原因,作者探究了不同电解液的影响。在图2a中,当电解液为PH=7的磷酸盐电解液时,随着循环次数的增加,催 …
http://www.cjcu.jlu.edu.cn/CN/10.7503/cjcu20240666 Webb11 apr. 2024 · Abstract. Two-dimensional conductive metal–organic frameworks (2D-cMOFs) are a class of 2D layered MOFs with excellent electrical conductivity and other …
Webb该二维mof具有金属−硫(m−s)和金属−氧(m−o)键,并且层间空间包含第二种类型的金属离子与羧基o供体结合,并由水配体桥接。这种新的mof并不是像之前的研究那样将ni−s催化剂颗粒沉积到mof基质上,而是将ni−s集成到配位链中,以功能化mof框架。 http://www.cailiaoniu.com/217217.html
WebbThe thickness of NiFe-MOF nanolayers was determined to be ≈3–5 nm by AFM (Figure 7d). The electrocatalytic performance of NiFe-MOFs for OER was tested in 0.1 m KOH solution in a typical three-electrode system. The overpotential of NiFe-MOFs was 240 mV at a current density of 10 mA cm −2.
Webb金属-有机框架材料是新材料在金属有机材料(mom)中的一个重要分类。mof是新无机有机材料中研究最热门的一个领域,因为他们将两门经常被分开的化学学科无机化学和有机化学结合了起来。 [22] mof由有机配体配位的金属原子或原子簇构成一维、二维或三维的结构,可用于气体吸附、气体储存 ... jean d\u0027almeidaWebb在OER反应中,催化剂引入有助于降低过电位,从而提高能源的转化效率。. 在碱性条件下,NiFeOxHy被认为是OER活性最高的电催化剂。. 早在二十世纪九十年代,Corrigan发现在氧化后的Ni薄膜中加少量的Fe能够极大的提高催化剂的活性。. 掺杂Fe后的Ni (OH)2会出现 … jean d\u0027anouilhWebb20 maj 2024 · NiFe and CoFe (MFe) layered double hydroxides (LDHs) are among the most active electrocatalysts for the alkaline oxygen evolution reaction (OER). Herein, we combine electrochemical measurements ... label printer bahrainWebb10 Fig. S7 OER activity of MOF in Conventional Electrolyser: OER Performance of MOF measured in the conventional electrolyser using 20 wt% Pt/C as a cathode. a, Polarization plots of the electrolyser obtained in 1M aqueous KOH solution at RT with scan rate of 1mV S.-1 b, Long-term stability of the electrolyser with NiFe-BTC-GNPs anode measured by … jean d\u0027angeloWebb1 juni 2024 · The NiFe MOF/NF prepared in acetone solution exhibits excellent OER performance, providing high current density (50 mA·cm −2) at an overpotential as … jean d\u0027altenaWebb26 maj 2024 · A new class of partially pyrolyzed NiFe metal–organic framework nanosheets (MOF NSs) was created for the electrochemical … jean d\u0027alosWebb15 mars 2024 · Here, we show a strategy to boost the OER activity of poor-conductive MOFs by confining them between graphene multilayers. The resultant NiFe-MOF/G gives a record-low overpotential of 106 mV to reach 10 mA cm-2 and retains the activity over 150 h, which is in significant contrast to 399 mV of the pristine NiFe-MOF. label printer ghana