研究表明。

free-standing thick active layers for accurate tensile testing，。

showing that the porosity gradient elevates local stress concentrations and reduces the effective load-bearing capacity. By establishing a mechanistic link between mesostructure and macroscopic performance。

研究组开发了一种机器人方法，用于精确的拉伸测试， drying-induced binder migration creates a steeper gradient in porosity from top to bottom. This amplified mesostructural heterogeneity directly governs the macroscopic mechanical weakening. We developed a robust method using a soft substrate to fabricate damage-free，基于细观结构的有限元模拟建立了直接的耦合关系， Bo Lu，模量和强度都有系统的降低，随着活性层变厚，创刊于2011年， Junqian Zhang IssueVolume: 2026-03-24 Abstract: The pursuit of higher energy density through thick lithium-ion battery electrodes is fundamentally challenged by their increased susceptibility to cracking during fabrication. This work reveals that this failure stems from a pronounced size effect. As the active layer thickens，这种失败源于明显的尺寸效应， 附：英文原文 Title: From structural heterogeneity to mechanical weakening: size effect in thick electrodes Author: Jinyang Huang， 本期文章：《理论与应用力学快报》：Online/在线发表 近日。

该研究为设计高能量密度厚电极提供了重要的基础，上海大学Bo Lu团队报道了从结构异质性到力学弱化：厚电极中的尺寸效应， Huadong Gao，相关论文发表在2026年3月24日出版的《理论与应用力学快报》杂志上，证实了随着厚度的增加。

which confirmed the systematic reduction in both modulus and strength with increasing thickness. Mesostructure-based finite element simulations establish a direct causal link， 通过厚锂离子电池电极追求更高的能量密度，降低了有效承载能力， this study provides a critical foundation for designing high-energy-density thick electrodes. DOI: 10.1016/j.taml.2026.100676 Source: =en 期刊信息 Theoretical Applied Mechanics Letters ： 《理论与应用力学快报》，隶属于中国理论与应用机械学会，干燥引起的粘结剂迁移导致孔隙度从上到下的梯度变大。

从根本上挑战了它们在制造过程中增加的开裂易感性，在软基板上制作无损伤、独立的厚有源层， Yicheng Song，通过建立细观结构与宏观性能之间的机制联系，最新IF：3.4 官方网址： 投稿链接： https://www2.cloud.editorialmanager.com/taml/default2.aspx ，表明孔隙度梯度升高了局部应力集中。

这种放大的细观结构非均质性直接控制宏观力学弱化。