An Energy Harvesting Comparison of Piezoelectric and Ionically Conductive Polymers

Author:

Farinholt Kevin M.1,Pedrazas Nicholas A.2,Schluneker David M.2,Burt David W.2,Farrar Charles R.2

Affiliation:

1. The Engineering Institute, Los Alamos National Laboratory, Los Alamos, NM 87545, USA,

2. The Engineering Institute, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

Abstract

With advances in wireless communications and low power electronics there is an ever increasing need for efficient self-contained power systems. Traditional batteries are often selected for this purpose; however, there are limitations due to finite life-spans and the need to periodically recharge or replace the spent power source. One method to address this issue is the inclusion of an energy harvesting strategy that can scavenge energy from the surrounding environment and convert it into usable electrical energy. Since civil, industrial, and aerospace applications are often plagued with an overabundance of ambient vibrations, electromechanical transducers are often considered a viable choice for energy scavengers. In this study, two classes of transducer are considered: the piezoelectric polymer polyvinylidene fluoride and the ionically conductive ionic polymer transducer. Analytical models are formed for each material assuming axial loading and simulation results are compared with experimental results for each test. Each material is then compared to examine the effectiveness of their mechanoelectric conversion properties.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

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