2018年5月31日 · Quantitative analysis of Ni 2+ /Ni 3+ using X-ray photoelectron spectroscopy (XPS) is important for evaluating the crystal structure and electrochemical performance of Lithium-nickel–cobalt-manganese oxide (Li [Ni x Mn y Co z]O 2, NMC).

2025年2月1日 · However, this work provides a direct high resolution observation of the decomposition products of Li 6 PS 5 Cl and their spatial distribution in a composite cathode based on Ni-rich NMC compound (LiNi x Mn y Co 1–x–y O 2, x > 0.8) through scanning/ transmission electron microscopy (S/TEM).

2024年6月21日 · Li-rich NMC (Li1.2Mn0.55Ni0.15Co0.1O2) thin film cathodes for Li-ion batteries using RF magnetron sputtering and post-annealing in O2. Thin film cathodes with high reversible capacities (260 mA h g-1) and potential profiles similar …

2021年1月1日 · X-ray photoelectron spectroscopy (XPS) is a widely used technique to study surface chemistry and ageing mechanisms of LiNi x Mn y Co z O 2 (NMC) based cathodes of lithium ion batteries.

Electrochemical testing and post mortem surface analysis are here used to investigate NMC electrodes cycled vs. either Li-metal, graphite or Li4Ti5O12 (LTO) as negative electrodes.

摘要 使用 X 射线光电子能谱 (XPS) 对 Ni2+/Ni3+ 进行定量分析对于评估锂镍钴锰氧化物 (Li [NixMnyCoz]O2, NMC) 的晶体结构和电化学性能非常重要。 然而，基于高斯/洛伦兹 (G/L) 峰拟合的定量分析面临重现性和有效性的挑战。

The Ni2+/Ni3+ ratios in NMC were quantitatively analyzed by non-linear least-squares fitting (NLLSF). Two Ni 2p overall spectra of synthesized Li [Ni0.33Mn0.33Co0.33]O2 (NMC111) and bulk LiNiO2 were used as the Ni2+ and Ni3+ reference standards.

The combination of a high‐Ni LiNixMnyCo1−x−yO2 (NMC) cathode and Li metal anode is currently considered the most promising candidate for high‐energy‐density Li‐metal batteries.

Conventional carbonate-based electrolytes with high corrosion towards Li metal result in massive dendrite growth and limited cycling life, particularly true for practical Li-metal batteries...

电池系统中锂电极和镍锰钴 (NMC) 电极的 XPS 分析。 锂分析面临与制备相关的挑战以及经常未被识别的与 F 的峰重叠。 在我们的实验室和文献中，当用 Al Kα X 射线产生时，KLL （电极内或电极上）具有 Ni 2p 光电子能谱。 使用涉及 F 和 NiO 的模拟光谱展示了 F 俄歇对 Ni 2p 信号强度的贡献程度，作为材料中 F/Ni 原子比的函数，并提出了可用于确定影响的显着程度的光谱信息。 位于所得光谱上。 我们的分析表明，在许多情况下，重叠问题对于实际电极材料来说非常重要。