Battery and Electrochemistry Laboratory, Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
Chem Commun (Camb). 2019 Feb 14;55(15):2174-2177. doi: 10.1039/c8cc09618j.
A room temperature, atomic-layer-deposition-like coating strategy for NCM811 (80% Ni) is reported. Trimethylaluminum is shown to readily react with adsorbed moisture, leading both to Al2O3 surface layer formation on NCM811 and to trace H2O removal in a single treatment step. Even more importantly, the cycling performance of pouch cells at 45 °C is greatly improved.
报道了一种室温下类似于原子层沉积的 NCM811（80%Ni）涂层策略。研究表明，三甲基铝很容易与吸附的水分发生反应，从而在 NCM811 表面形成一层 Al2O3，并在单一处理步骤中去除痕量的 H2O。更重要的是，在 45°C 下，软包电池的循环性能得到了很大的改善。
