Work

Controllable Particle Packing via Scalable Layer‐by‐Layer Assembly of Anode Particles for Fast‐Charging Lithium‐Ion Batteries

Year: 2026

Type: article

Abstract: ABSTRACT Particle packing in battery electrodes is pivotal to the fast‐charging performance of lithium‐ion batteries (LIBs). However, precise control of particle packing structure remains a major challenge in electrode fabrication, primarily owing to the absence of robust interfacial bonding between micron‐scale particles. Herein, we propose a novel layer‐by‐layer single‐layer particle assembly technique to fabricate electrodes with well‐defined particle packing structures. Using this approach, we prepared a 12‐meter‐long graphite (Gr)/hard carbon (HC) hybrid anode featuring a body‐centered cubic (BCC)‐like structure, which maximizes intimate Gr/HC contact interfaces and facilitates solid‐state Li + transport. Coupled with LiFePO 4 (LFP) cathodes, the as‐fabricated anode exhibits a high‐capacity retention of 80.7% after 1650 cycles at 4C. From an electrode design standpoint, this controllable particle‐packing strategy paves the way for a universal framework for developing sustainable, long‐cycling, and fast‐charging electrodes, potentially applicable to many types of battery anodes and cathodes.

Source: Advanced Materials

DOI: 10.1002/adma.74698