Charging Reactions Promoted by Geometrically Necessary Dislocations in Battery Materials Revealed by In Situ Single‐Particle Synchrotron Measurements

• DOI: 10.1002/adma.202003417
• Publication Date: 2020-08-06T09:35:00Z
• Authors: Zhengrui Xu; Dong Hou; David J. Kautz; Wenjun Liu; Ruqing Xu; Xianghui Xiao; Feng Lin
• Keywords: Particle (ecology)

Abstract Crystallographic defects exist in many redox active energy materials, e.g., battery and catalyst which significantly alter their chemical properties for storage conversion. However, there is lack of quantitative understanding the interrelationship between crystallographic reactions. Herein, defects, such as geometrically necessary dislocations, are reported to influence reactions particles through single‐particle, multimodal, situ synchrotron measurements. Through Laue X‐ray microdiffraction, spatially identified statistically quantified from a large quantity diffraction patterns layered oxide particles, including tilt boundaries, mixed defects. The ex measurements, combining microdiffraction spectroscopy imaging, reveal that LiCoO 2 with higher concentration dislocations provide deeper charging reactions, indicating may facilitate oxides during initial charging. present study illustrates precise control distribution can potentially promote homogenize materials.