Lithium-sulfur batteries are up to 3 times more energy dense than conventional lithium-ion batteries, but have short lives -- so far.
Lithium-sulfur batteries are up to 3 times more energy dense than conventional lithium-ion batteries, but have short lives — so far.The search for lighter, smaller, more powerful, and less expensive batteries is taking place at research institutes all around the world. Argonne National Lab in Illinois is one of them. One of its many research projects is investigating ways of making better lithium-sulfur batteries.
So why aren’t lithium-sulfur batteries in general use? Because they work well in the lab, but have a distressing tendency to fail after just a few charge/discharge cycles in the real world. The researchers at Argonne National Lab say they may have a handle on that problem. For some context, understand that the research at Argonne has been going on for a decade.
To get the answers they needed, the scientists employed advanced characterization techniques. Analyses of the catalyst’s structure with the intense synchrotron X-ray beams at the Advanced Photon Source, a DOE Office of Science user facility, revealed that it plays a critical role in the reaction pathway. The catalyst structure affects the shape and composition of the final product upon discharge, as well as the intermediate products.
The simple truth is, the crisis of an overheating planet doesn’t play favorites and could care less about politics. It is going to upend life on Earth as we know it in ways that we can only dimly understand at the moment. Battery storage will be crucial to the need to electrify everything with renewable energy in order to limit the damage from climate change. To borrow a line from the American Revolution, “We must all hang together or we shall all hang separately.
Notably, an unexpected gathering-induced collective charge transfer of lithium polysulfides was captured on the nanocluster active-center-immobilized surface. It further induced an instantaneous deposition of nonequilibrium Li2S nanocrystals from the dense liquid phase of lithium polysulfides. Without mediation of active centres, the reactions followed a classical single-molecule pathway, lithium polysulfides transforming into Li2S2 and Li2S step by step.
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