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Researchers observe major source of aging in Li-ion cathode materials

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Due to the Li + -H + exchange during the charging process it degrades to ABBCCA (right). The researchers were interested in elucidating electrochemical processes in high-capacity Li-rich cathode materials: (x)Li 2 MnO 3 *(1-x)LiMO 2 (“M” is a transition metal such as manganese, chromium or iron). Click to enlarge.

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Monash University team develops graphene-based supercapacitor with energy density of 60 Wh/L

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A research team at Monash University (Australia) led by Professor Dan Li of the Department of Materials Engineering has developed a new strategy to engineer graphene-based supercapacitors (SC), resulting in an energy density of 60 Wh/liter—comparable to lead-acid batteries and around 12 times higher than commercially available SCs.

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MIT/Tsinghua high-rate aluminum yolk-shell nanoparticle anode for Li-ion battery with long cycle life and high capacity

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A team of researchers at MIT and Tsinghua University has developed a high-rate, high-capacity and long-lived anode for Li-ion batteries comprising a yolk-shell nanocomposite of aluminum core (30 nm in diameter) and TiO 2 shell (~3 nm in thickness), with a tunable interspace (Al@TiO 2 , or ATO). —Li et al.

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UK Researchers Developing Rechargeable Lithium-Air Battery; Up to 10X the Capacity of Current Li-ion Cells

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Oxygen drawn from the air reacts within the porous carbon to release the electrical charge in this lithium-air battery. Researchers in the UK are developing a rechargeable lithium-air battery that could deliver a ten-fold increase in energy capacity compared to that of currently available lithium-ion cells. Click to enlarge.

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UC Riverside team develops new coating strategy for Li-metal anodes to prevent dendrite formation

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A team of researchers at the University of California, Riverside has developed an approach to addressing the vexing problem of dendrite formation that hobbles the use of high energy density lithium-metal anodes in advanced recyclable batteries. The earliest non-rechargeable Li batteries using Li metal as anode appeared in the 1970s.

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ARPA-E awarding $39M to 16 projects to grow the domestic critical minerals supply chain

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The selected projects, led by universities, national laboratories, and the private sector aim to develop commercially scalable technologies that will enable greater domestic supplies of copper, nickel, lithium, cobalt, rare earth elements, and other critical elements. Feedstocks will include Li/Ni/Ca/Mg-rich igneous and sedimentary minerals.

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Researchers develop safe and durable high-temperature Li-S battery with conventional C-S electrode using MLD alucone coating

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Researchers from University of Western Ontario, Lawrence Berkeley National Laboratory (LBNL), and Canadian Light Sources (CLS) have developed a safe and durable high-temperature Li-sulfur battery using universal conventional carbon–sulfur (C-S) electrodes with a molecular layer deposited (MLD) alucone (aluminum oxide polymeric film) coating.

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