Department of Mechanical Engineering, Vanderbilt University , Nashville, Tennessee 37235, United States.
Nano Lett. 2014 Jun 11;14(6):3197-202. doi: 10.1021/nl500531r. Epub 2014 May 19.
A load-bearing, multifunctional material with the simultaneous capability to store energy and withstand static and dynamic mechanical stresses is demonstrated. This is produced using ion-conducting polymers infiltrated into nanoporous silicon that is etched directly into bulk conductive silicon. This device platform maintains energy densities near 10 W h/kg with Coulombic efficiency of 98% under exposure to over 300 kPa tensile stresses and 80 g vibratory accelerations, along with excellent performance in other shear, compression, and impact tests. This demonstrates performance feasibility as a structurally integrated energy storage material broadly applicable across renewable energy systems, transportation systems, and mobile electronics, among others.
本文展示了一种同时具有储能和承受静态和动态机械应力能力的承载型多功能材料。该材料是通过将离子导电聚合物渗透到直接刻蚀在块状导电硅中的纳米多孔硅中来制备的。该器件平台在暴露于超过 300 kPa 的拉伸应力和 80 g 的振动加速度下，仍能保持近 10 W h/kg 的能量密度和 98%的库仑效率，在其他剪切、压缩和冲击测试中也表现出优异的性能。这证明了其作为一种结构集成的储能材料的性能可行性，可广泛应用于可再生能源系统、交通运输系统和移动电子设备等领域。
