A multifunctional load-bearing solid-state supercapacitor.
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.
Department of Mechanical Engineering, Vanderbilt University , Nashville, Tennessee 37235, United States.
Andrew S
AS
Westover
John W
JW
Tian
Shivaprem
S
Bernath
Landon
L
Oakes
Rob
R
Edwards
Farhan N
FN
Shabab
Shahana
S
Chatterjee
Amrutur V
AV
Anilkumar
Cary L
CL
Pint