具有反萤石型结构的 Li5 + xFe1-xMnxO4 作为锂电池正极的合成与电化学特性

IF 1.4 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Chemistry Letters Pub Date : 2024-04-08 DOI:10.1093/chemle/upae046

Ryosuke Goto, Sou Taminato, Daisuke Mori, Nobuyuki Imanishi

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引用次数: 0

摘要

摘要通过常规固态反应合成了一种新型反氟化物结构的 Li5 + xFe1-xMnxO4，并通过电化学测量对其锂（去）插殖特性进行了表征。当 x ≥ 0.6 时，获得了具有 Li6MnO4 型结构的单相。经球磨处理的 Li5.6Fe0.4Mn0.6O4 (x = 0.6) 电极的首次放电容量为 450 mAh/g。在随后的循环中，可逆反应继续进行，放电容量约为 200 mAh/g。具有反萤石结构的新型铁锰体系可能成为高容量阴极材料的潜在候选材料。

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Synthesis and electrochemical properties of Li5 + xFe1–xMnxO4 with an antifluorite-type structure as a lithium battery cathode

Abstract A new antifluorite-structured Li5 + xFe1–xMnxO4 was synthesized by conventional solid-state reaction and the lithium (de-)intercalation properties were characterized from electrochemical measurements. A single phase with a Li6MnO4-type structure was obtained for the x ≥ 0.6 compositions. The first discharge capacity of a Li5.6Fe0.4Mn0.6O4 (x = 0.6) electrode treated by ball milling was 450 mAh/g. The reversible reaction continued to proceed with ca. 200 mAh/g after subsequent cycles. A new iron–manganese system with an antifluorite structure could be a potential candidate as a high-capacity cathode material.

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来源期刊

Chemistry Letters 化学-化学综合

CiteScore

3.00

自引率

6.20%

发文量

260

审稿时长

1.2 months

期刊介绍： Chemistry Letters covers the following topics: -Organic Chemistry- Physical Chemistry- Inorganic Chemistry- Analytical Chemistry- Materials Chemistry- Polymer Chemistry- Supramolecular Chemistry- Organometallic Chemistry- Coordination Chemistry- Biomolecular Chemistry- Natural Products and Medicinal Chemistry- Electrochemistry