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Students Develop Low-Cost Wearable Device for the Visually Impaired

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OurVision is a low-cost wearable that reads text out loud to users and helps them navigate their surroundings. This article is an edited excerpt of the “ EPICS in IEEE Team Completes and Deploys Assistive Device to Blind Students in Bangalore, India ” blog entry published in May. To support future projects, donate here.

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Berkeley Lab scientists generate low-cost, hybrid thermoelectric materials

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Scientists at Lawrence Berkeley National Laboratory (Berkeley Lab) have constructed a low-cost, nanoscale composite hybrid thermoelectric material by wrapping a polymer that conducts electricity around a nanorod of tellurium—a metal coupled with cadmium in today’s most cost-effective solar cells. See, Joseph P.

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New high-activity, low-cost nickel-based catalyst for fuel cells exhibits performance similar to Pt; hydroxide exchange membrane fuel cells

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Owing to its high activity and low cost, the catalyst shows significant potential for use in low-cost, high-performance fuel cells, the team suggested. This new hydroxide exchange membrane fuel cell can offer high performance at an unprecedented low cost. —Zhuang et al. —Zhuang et al.

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New nanoparticle copper compound cathode could enable low-cost, long-life and high-power potassium-ion batteries for grid storage

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Stationary energy storage systems that can operate for many cycles, at high power, with high round-trip energy efficiency, and at low cost are required. Cost is a greater concern. We decided we needed to develop a new chemistry if we were going to make low-cost batteries and battery electrodes for the power grid.

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New low-cost bio-inspired nanostructured MoS2 catalyst performs almost as efficiently as Pt for hydrogen production

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While Pt nanoparticles represent the current benchmark for HER electrocatalysis, the elemental scarcity, high cost, and poor stability against nanoparticle coarsening and agglomeration impose practical limitations and motivate the need for a next generation of alternative HER catalysts. —Chen et al. Resources.

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New aqueous rechargeable lithium battery shows good safety, high reliability, high energy density and low cost; another post Li-ion alternative

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The battery, which can be low cost and reliable in terms of safety, provides another chemistry for post Li-ion batteries, they suggest, and with higher practical energy densities than Li-air systems for supporting applications including electric vehicles and large-scale grid energy storage. Higher practical energy density.

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Sandia team boosts hydrogen production activity by molybdenum disulfide four-fold; low-cost catalyst for solar-driven water splitting

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A team led by researchers from Sandia National Laboratories has shown that molybdenum disulfide (MoS 2 ), exfoliated with lithiation intercalation to change its physical structure, performs as well as the best state-of-the-art catalysts for the hydrogen evolution reaction (HER) but at a significantly lower cost. —Bryan Kaehr.

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