2024年6月24日 · In this work, we employ operando X-ray absorption spectroscopy and near-ambient pressure X-ray photoelectron spectroscopy to elucidate that NiS undergoes an in-situ phase transition to an...

2022年8月5日 · In this contribution, we report about the design, synthesis, and characterization of this low-cost and multi-sites-owned TiS 2−x/NiS HER catalyst as well as its performance toward the HER in both acidic and alkaline media.

2023年6月2日 · To study the interfacial reaction between LPS and Ni-based cathodes, we also computed S K-edge XAS for NiS, a common degradation product of LPS in contact with Ni-based cathode materials,...

2014年10月16日 · Ni K-edge x-ray absorption spectroscopy (XAS) measurements were carried out using the micro-XAS station at the BM-23 beamline of the European synchrotron radiation facility, Grenoble. For XAS measurements, in order to have an optimized absorption length, the samples were uniformly dispersed in an inert boron nitride material after finely ...

2017年7月6日 · The electronic structure change of NiS$_{2-x}$Se$_x$ as a function of Se concentration $x$ has been studied by Ni $L$-edge X-ray absorption spectroscopy (XAS). The XAS spectra show distinct...

1997年1月1日 · X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) studies on the tetra(n-butyl)ammonium salt of [Ni(dmbit) 2] x− (x = 2,1 and 0.29) and [Ni(dmbbip) 2] − have been performed in order to reveal the structural parameters of the [NiS 4] x− core along with the chemical state. The central nickel ...

2017年9月26日 · 这项工作用电化学原位xas谱研究了电化学活化过程中nis 2 的配位环境变化情况。 该研究表明，在碱性溶液中经历电化学活化过程的NiS 2 纳米片逐渐转化为更细小的金属镍纳米超薄片，同时电极中的硫含量大幅下降，最终仅有痕量的S 2- 与新生成的Ni 0 配位，形成 ...

2004年11月30日 · The electronic structure for the chemically Li-ion deintercalated Li 1− x Ni 0.75 Al 0.25 O 2 has been investigated with X-ray absorption spectroscopy (XAS) at Ni K-edge and oxygen K-edge. The Ni K-edge and the O K-edge spectra have been effectively changed in the electrochemical reaction.

2024年6月25日 · 发现界面Ni位点是水分子解离和OH*吸附的活性位点，界面S作为H*吸附和产氢H2的活性位点。 原位形成的Ni3S2/NiO界面使得NiS电催化剂在10 mA cm-2电流密度的过电势达到95±8 mV。 (2) 这项工作说明过渡金属硫化物的化学性质是动态变化的，而且说明工况的控制和原位形成催化活性物种能够大幅度提高催化活性。 参考文献. Ding, X., Liu, D., Zhao, P. et al. Dynamic restructuring of nickel sulfides for electrocatalytic hydrogen evolution reaction. Nat …

2018年1月7日 · The electronic structure change of NiS 2−x Se x as a function of Se concentration x has been studied by Ni L-edge X-ray absorption spectroscopy (XAS). The XAS spectra show distinct features in Ni L 3 edge, indicating whether the system is insulating or metallic.