This paper demonstrates an innovative approach to fabricating woven-carbon-fabric-based composite structural batteries with quasi-solid electrolyte, and provides comprehensive characterization of the electrochemical and mechanical performance of the batteries. The produced batteries yield a specific capacity of over 60 mAh/g, demonstrate excellent Coulombic efficiency and favorable rate performance, and exhibit a high energy density of 47.6 Wh/kg. Furthermore, tensile tests elucidate that a Young’s modulus of 13.31 GPa and an ultimate tensile strength of 128.86 MPa along the yarn direction can be achieved by the structural batteries. Bias-extension experiments demonstrate a modulus of 3.03 GPa and a yield strength of 21.07 MPa for the batteries under shear deformation. Additionally, three-point bending tests indicate a bending modulus of 9.01 GPa and a bending strength of 152.32 MPa for the batteries. Collectively, these results validate that the developed multi-functional structural batteries can realize effective integration of the energy storage and load bearing capabilities.
Han et al. (Sun,) studied this question.