Dataset for "Decoupling elasticity and electrical conductivity of carbon black gels filled with insulating non-Brownian grains"

A unique bistable transition has been identified in granular/colloidal gel-composites, resulting from shear-induced phase separation of the gel phase into dense blobs. In energy applications, it is critical to understand how this transition influences electrical performance. Mixing conductive colloids with conductive inclusions, we find the conductivity and elasticity move in concert, both decreasing in the collapsed phase-separated state. Surprisingly, with insulating inclusions these properties can become decoupled, with the conductivity instead increasing despite the collapse of the gel structure.研究人员在颗粒/胶体凝胶复合材料（granular/colloidal gel-composites）中发现了一种独特的双稳态转变（bistable transition），该转变由凝胶相经剪切诱导相分离（shear-induced phase separation）形成致密团簇（dense blobs）所引发。在能源应用领域，明确该转变对电学性能的影响至关重要。将导电胶体（conductive colloids）与导电夹杂（conductive inclusions）混合后，我们发现体系的导电性与弹性变化趋势保持一致，在坍塌相分离态（collapsed phase-separated state）下二者均会下降。令人意外的是，当使用绝缘夹杂（insulating inclusions）时，上述两种性能会发生解耦：尽管凝胶结构发生坍塌，导电性反而会升高。