2019年6月20日 · The red curve (Fig. 5) of the Ni(OH) 2 /NiOOH Ni NWs (modified at 200 mV s −1) shows very different electrochemical behaviour than the non-modified electrode. From the CV curve (Fig. 5, red curve) redox-couple peaks were observed at 0.3 V (a HCHO) in the anodic region and 0.8 V (c HCHO) in the cathodic region.

2024年6月12日 · 图1. β-NiOH2催化剂OER过程的电化学性能曲线，原始β-NiOH2颗粒及该颗粒经过1000圈CV测试后的TEM图像，表面背散射电子图像和选取电子衍射（SAED）图样。 图片来源：J. Am. Chem. Soc. 如图1所示，所制备的β-Ni (OH)2催化剂为六角形纳米单晶片状结构，表面光滑。 而经过1000圈CV测试以后，片状结构边缘形成了一层厚约16 nm的多孔状结构，而汇聚束衍射和SAED图样进一步证实了片状颗粒的边缘存在镍氧化物。 同时，电化学性能测试证明经 …

5 天之前 · NiOOH generated in situ from pre-catalysts plays a key role in the 5-hydroxymethylfurfural electrooxidation reaction. ... was derived from the electrochemical double-layer capacitances (C dl) by testing the scan rate CV-dependence plot, and the C dl is obtained from the CV curve in the non-Faradaic potential range from 1.00~1.10 V RHE. 3 ...

2021年12月6日 · We first present NiOOH phases and structures obtained by the latest global optimization methods in combination with machine learning potentials. The electronic structures of NiOOH are then described by comparing the performance of different theoretical levels, in particular, those based on PBE+U and hybrid functionals in DFT calculations.

2023年12月2日 · The O Vs in NiOOH electrode expose the coordinately unsaturated metal sites, as an electrophilic center, to directly interact with carbonyl oxygen of urea to trigger a nucleophile attack ...

2014年7月20日 · Electrochemical formation of β-NiOOH on metallic Ni substrate through anodic oxidation of a surface layer of β-Ni(OH) 2 was studied using cyclic-voltammetry (CV) and chrono-amperometry (CA). The experimental work was carried out in 0.5 M aqueous KOH and in the 277–318 K range.

Here, we report the record-breaking high performance of the nanocrystalline-amorphous NiOOH electrode (referred to as NCA -NiOOH), which is achieved by rapid electrochemical reconstruction of the tailored large αL- NiMoO 4 ·xH 2 O monocrystals.

2025年3月30日 · Figure 6b Left shows that 32 O 2 is stably produced by NiS 2-NiOOH in each CV cycle. In comparison, the other compounds steadily produce 34 O 2 and 36 O 2 , and the 32 O 2 product signal could not ...

2024年11月20日 · We compare four Ni-based thin-film precatalysts—Ni, NiO, Ni (OH) 2, and NiS x —in 0.1 M KOH with and without Fe impurities. Precatalyst conversion to the active oxyhydroxide catalysts and their OER performance are …

2025年1月11日 · Cyclic voltammetry (CV) measurements were conducted over a potential range of −0.23 to 1.35 V with a scan rate of 50 mV s −1, and each measurement was repeated at least three times to ensure reproducibility. The CV curves were mass-normalized based on the platinum loading to ensure an accurate comparison of the electrocatalytic activity.