Kaltseis, RainerKeplinger, ChristophAdrian Koh, Soo JinBaumgartner, RichardGoh, Yu FengNg, Wee HoeKogler, AlexanderTröls, AndreasFoo, Choon ChiangSuo, ZhigangBauer, Siegfried2015-03-112014Kaltseis, Rainer, Christoph Keplinger, Soo Jin Adrian Koh, Richard Baumgartner, Yu Feng Goh, Wee Hoe Ng, Alexander Kogler, et al. 2014. “Natural Rubber for Sustainable High-Power Electrical Energy Generation.” RSC Adv. 4 (53): 27905. doi:10.1039/c4ra03090g.2046-2069http://nrs.harvard.edu/urn-3:HUL.InstRepos:14117708Clean, renewable and abundant sources of energy, such as the vast energy of ocean waves, are untapped today, because no technology exists to convert such mechanical motions to electricity economically. Other sources of mechanical energy, such as motions of people and vibrations of buildings and bridges, can potentially power portable electronics and distributed sensors. Here we show that natural rubber can be used to construct generators of high performance and low cost. Natural rubber has higher elastic modulus, fracture energy and dielectric strength than a commonly studied acrylic elastomer. We demonstrate high energy densities (369 mJ g−1) and high power densities (200 mW g−1), and estimate low levelized cost of electricity (5–11 ct kW−1 h−1). Soft generators based on natural rubber enable clean, low-cost, large-scale generation of electricity.en-USJournal Article2015-01-25Rainer Kaltseis, Christoph Keplinger, Soo Jin Adrian Koh, Richard Baumgartner, Yu Feng Goh, Wee Hoe Ng, Alexander Kogler, Andreas Tröls, Choon Chiang Foo, Zhigang Suo, Siegfried Bauer2015-03-1110.1039/c4ra03090g