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Updated: Jun 2, 2025

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
Published on: May 2, 2016
Two dimensional confinement induced discontinuous chain transitions for augmented electrocaloric cooling
Fang Wang1, Zhong-Ye Wang2, Yao-Rong Luo3
1Department of Polymer Science and Engineering, Key Laboratory of High-Performance Polymer Materials and Technology of MOE, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, China.
Abstract:
Overheating remains a major barrier to chip miniaturization, leading to device malfunction. Addressing the urgent need for thermal management promotes the development of solid-state electrocaloric cooling. However, enhancing passive heat dissipation through two-dimensional materials in electrocaloric polymers typically compromises the electrocaloric effect. In this work, we utilize two-dimensional polyamide with porous structure and hydrogen bonding to achieve multiple polar conformations with short-range order in the electrocaloric composite polymers. The structure minimizes intermolecular interactions while reducing energy barriers for field-driven polar-nonpolar conformational transitions. The electrocaloric polymer exhibits doubled cooling efficiency at electric fields as low as 40 MV m-1. Additionally, the electrode design achieves a vertical deformation of 2 millimeters, demonstrating the feasibility of self-driven electric refrigeration devices. This porous organic two-dimensional material resolves cooling efficiency limitations from spatial confinement, advancing the integration of two-dimensional materials in flexible electronics.
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