A new “zero-strain” system, spinel Li1+xRh2O4, is found as an insertion material for lithium ions. A very small volume change of ca. 0.5% is observed in the two-phase reaction process. The “zero-strain” behavior is likely induced by itinerant t2g electrons with a suppressed Jahn–Teller effect.
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Gu et al. (2013) studied this question.
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