Jaue2025-039 Design and performance study of concrete battery based on self-healing conductive network

Abstract

Against the backdrop of the global "Dual-Carbon" policy and rising building energy consumption, concrete batteries integrating structural load-bearing and energy supply have become a key direction for decentralized energy systems in the construction field. However, traditional concrete batteries suffer from sharp performance degradation due to conductive network damage caused by material deterioration and external loading, limiting their practical application. This study designs a concrete battery with a self-healing conductive network to address this issue, using a combination of experimental and simulation methods. Conductive composites with self-healing functions were prepared via material screening and ratio optimization to construct the self-healing conductive network, which was then embedded in a concrete substrate. Performance tests (conductivity, power generation, self-healing, mechanical properties) and finite element simulation analysis were conducted. Results show that the designed battery achieves an 89.2% conductivity recovery rate after damage under specific conditions, with power generation efficiency improved by 42.6% compared to the unrepaired state, while meeting basic building structural mechanical requirements. This study provides new insights for enhancing the durability and stability of concrete batteries, facilitating the development of building-integrated photovoltaics and low-carbon buildings.