Cover Image, Volume 49, Issue 20


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The introduction of inorganic nanoparticles into a polymer matrix to form dielectric polymer nanocomposites represents one of the most promising and exciting avenues to high-performance energy storage materials. By judiciously selecting a combination of polymer matrix and nanoparticles, the dielectric properties can be tuned and the energy density has been greatly improved in the polymer nanocomposites. In a Review on page 1421 of this issue, Qing Wang and Lei Zhu summarize a range of current approaches to dielectric polymer nanocomposites and conclude with a discussion of scientific issues that remain to be addressed as well as recommendations for future research.