Conformal Buffer Layer Coating on Ni-Rich Cathode Powder via Particle Atomic Layer Deposition for All-Solid-State Batteries. Hwichul Yang, Miju Ku, Jongheon Kim, Daye Lee, Hansam Lee, Young-Beom Kim.Immense Reduction in Interfacial Resistance between Sulfide Electrolyte and Positive Electrode. Kazunori Nishio, Daisuke Imazeki, Kosuke Kurushima, Yuki Takeda, Kurei Edamura, Ryo Nakayama, Ryota Shimizu, Taro Hitosugi.Which Exchange Current Densities Can Be Achieved in Composite Cathodes of Bulk-Type All-Solid-State Batteries? A Comparative Case Study. Vanessa Miß, Asvitha Ramanayagam, Bernhard Roling.This article is cited by 310 publications. These aspects on the atomic scale will give a useful perspective for the further improvement of the ASS-LIB performance.
SULFIDE CHARGE FREE
The LNO interposition suppresses this growth of SCL and provides smooth Li transport paths free from the possible bottlenecks. The calculated energies of the Li-vacancy formation and the Li migration reveal that subsurface Li in the LPS side can begin to transfer at the under-voltage condition in the LCO/LPS interface, which suggests the SCL growth at the beginning of charging, leading to the interfacial resistance. The LCO/LPS interface has attractive Li adsorption sites and rather disordered structure, whereas the interposition of the LNO buffer layers forms smooth interfaces without Li adsorption sites for both LCO and LPS sides. The DFT+U calculations, coupling with a systematic procedure for interface matching, showed the stable structures and the electronic states of the interfaces. As a most representative system, we examined the interfaces between LiCoO 2 cathode and β-Li 3PS 4 solid electrolyte (LCO/LPS), and the LiCoO 2/LiNbO 3/β-Li 3PS 4 (LCO/LNO/LPS) interfaces with the LiNbO 3 buffer layers. We theoretically elucidated the characteristics of the space–charge layer (SCL) at interfaces between oxide cathode and sulfide electrolyte in all-solid-state lithium-ion batteries (ASS-LIBs) and the effect of the buffer layer interposition, for the first time, via the calculations with density functional theory (DFT) + U framework.