What is it about?
A polysulfide shield is built by an ion selective membrane, which improves the stability and coulombic efficiency of Li–S cells.
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Why is it important?
An ion selective membrane was proposed to block the diffusion of polysulfide anions across the membrane to the anode side, which greatly suppresses the so called "shuttle effect" in the lithium sulfur battery. By this method, an ultralow capacity degradation rate of 0.08%per cycle is achieved within the first 500 galvanostatic charge–discharge cycles.
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This page is a summary of: Ionic shield for polysulfides towards highly-stable lithium–sulfur batteries, Energy & Environmental Science, January 2014, Royal Society of Chemistry,
DOI: 10.1039/c3ee42223b.
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