Topic
Power density
About: Power density is a research topic. Over the lifetime, 9534 publications have been published within this topic receiving 197264 citations. The topic is also known as: volumic power & volume power density.
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231 citations
TL;DR: In this paper, the performance of a phase boundary nanoporous carbon |1.0m triethylmethylammonium tetrafluoroborate (TEMA) solution in acetonitrile (AN), γ-butyrolactone (GBL), acetone (DMK) and propylene carbonate (PC) was studied using the cyclic voltammetry (CV) and the electrochemical impedance spectroscopy (EIS) methods.
230 citations
TL;DR: Simulations demonstrate that all previous interband cascade laser performance has suffered from a significant imbalance of electron and hole densities in the active wells, and confirm experimentally that correcting this imbalance with relatively heavy n-type doping in the electron injectors substantially reduces the threshold current and power densities relative to all earlier devices.
Abstract: Mid-infrared semiconductor lasers suffer from a high threshold power density, but interband cascade lasers may offer a more efficient alternative. Here, theory and experiments on such emitters demonstrate remarkably low thresholds and power consumption compared to state-of-the-art quantum cascade lasers.
230 citations
TL;DR: In this article, a trilayered architecture composites comprised of two outer layers of 2D NN platelets dispersed in a poly(vinylidene fluoride) (PVDF) matrix to provide high dielectric constant and a middle layer of pristine PVDF to offer high breakdown strength.
229 citations
TL;DR: The market for lithium batteries is undergoing a rapid expansion as new applications demand higher densities of energy and power storage as mentioned in this paper, which can reach specific energies of 880 and 500 W h kg−1 respectively.
Abstract: The market for lithium batteries is undergoing a rapid expansion as new applications demand higher densities of energy and power storage. Simple theoretical estimates show that lithium and lithium ion cells can reach specific energies of 880 and 500 W h kg–1 respectively. With an electrolyte conductivity above 3 × 10–4 S cm–1 and thickness below 0.01 cm, a power density of 300 W dm–3 can be obtained without excessive energy losses. Diffusion in porous or polymer composite electrodes is enhanced by an interpenetrating electrolyte provided the electrode particles are small. Batteries using transition metal oxide positive electrodes and carbon negative electrodes are expected to give practical specific energies up to 180 W. h kg–1 including packaging and other essential additional materials in the near future.
228 citations