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SLAC, Stanford researchers revitalize batteries by bringing ‘dead’ lithium back to life

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Researchers at the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University may have found a way to revitalize rechargeable lithium batteries, potentially boosting the range of electric vehicles and battery life in next-gen electronic devices. Credit: Greg Stewart/SLAC National Accelerator Laboratory.

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Carbon nanomembrane prevents dendrite formation in Li-metal batteries, doubles lifetime

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The energy density of traditional lithium-ion batteries is approaching a saturation point that cannot meet the demands of the future—in electric vehicles, for example. Lithium metal batteries can provide double the energy per unit weight when compared to lithium-ion batteries. —Rajendran et al.

Carbon 448
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Nano-vault architecture alleviates stress in Si-based anodes for Li-ion batteries

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New research conducted by the Okinawa Institute of Science and Technology Graduate University (OIST) has identified a specific building block that improves the anode in lithium-ion batteries. Traditionally, graphite is used for the anode of a lithium-ion battery, but this carbon material has major limitations.

Li-ion 243
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UT Austin team develops new family of high-capacity anode materials: Interdigitated Eutectic Alloys

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Researchers in the Cockrell School of Engineering at The University of Texas at Austin have developed a new family of anode materials that can double the charge capacity of lithium-ion battery anodes. It is a simple, low-cost approach that can be applied to a broad range of alloy systems with various working ions such as Li, Na, or Mg.

Austin 150
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MIT-led team devises new approach to designing solid ion conductors; implications for high-energy solid-state batteries

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Researchers led by a team from MIT, with colleagues from Oak Ridge National Laboratory (ORNL), BMW Group, and Tokyo Institute of Technology have developed a fundamentally new approach to alter ion mobility and stability against oxidation of lithium ion conductors—a key component of rechargeable batteries—using lattice dynamics.

MIT 170
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Cornell team uses indium coating to enable use of high-capacity lithium metal anodes

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Researchers at Cornell led by Professor Lyndon Archer, in collaboration with Professor Ravishankar Sundararaman at Rensselaer Polytechnic, have demonstrated a new technique for enabling the use of high-capacity lithium metal anodes in rechargeable batteries. Dendrites are also eliminated, leaving the surface smooth and compact.

Li-ion 207
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Researchers devise electrode architectures to prevent dendrite formation in solid-state batteries

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So far, the current densities that have been achieved in experimental solid-state batteries have been far short of what would be needed for a practical commercial rechargeable battery. The idea was inspired by experimental high-temperature batteries, in which one or both electrodes consist of molten metal.

Batteries 199