Publications by authors named "P Ranque"

Article Synopsis
  • Li metal batteries are promising for energy storage due to their high energy and power density, but they face stability issues with typical Li-ion electrolytes.
  • Combining Li metal with a polymer electrolyte can enhance safety and performance by addressing key factors like ionic conductivity and mechanical stability.
  • A new multifunctional polysalt, made from sustainable materials, has been developed to improve compatibility with Li metal and reduce decomposition, allowing for the use of high-voltage nitrile-based plasticizers in polymer batteries.
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Unlocking the full potential of solid-state electrolytes (SSEs) is key to enabling safer and more-energy dense technologies than today's Li-ion batteries. In particular, composite materials comprising a conductive, flexible polymer matrix embedding ceramic filler particles are emerging as a good strategy to provide the combination of conductivity and mechanical and chemical stability demanded from SSEs. However, the electrochemical activity of these materials strongly depends on their polymer/ceramic interfacial Li-ion dynamics at the molecular scale, whose fundamental understanding remains elusive.

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Developing multifunctional polymeric binders is key to the design of energy storage technologies with value-added features. We report that a multigram-scale synthesis of perylene diimide polymer (PPDI), from a single batch via polymer analogous reaction route, yields high molecular weight polymers with suitable thermal stability and minimized solubility in electrolytes, potentially leading to improved binding affinity toward electrode particles. Further, it develops strategies for designing copolymers with virtually any desired composition via a subsequent grafting, leading to purpose-built binders.

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Dracunculiasis has been described since antiquity and will be forever associated with the image of the method of extraction consisting of winding a few centimeters of the worm around a stick every day. For nearly ten years a worldwide effort to eradicate this infection has been under way. Achieving this apparently simple goal is hindered by the difficulties in accessing infected areas and by the dire poverty in the regions involved which include the "poorest of the poor".

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In an open clinical trial in phase IV, 856 onchocerciasis infected subjects received 150 micrograms/kg of ivermectin in May 1987. While 607 were included as witness. This cohort was revisited 7 and 12 months after.

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