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Dynamic instability of lithiated phosphorene

机译:锂化磷烯的动态不稳定性

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Li-ion batteries are widely used energy storage units. Although phosphorene delivers a high Li capacity, the transition capacity between the intercalation reaction and the conversion reaction is still not clear. We investigate the structural and electronic properties of Li intercalated phosphorene and graphene/phosphorene/graphene sandwiches by first-principles calculations. The competition to obtain charge from Li between C and P reduces charge depletion on the interlayer P–P bonds, improving stability. Importantly, the sandwiches show higher transition capacities than freestanding phosphorene, confirmed by ab initio molecular dynamics simulations. The trilayer structures show better structural reversibility than the monolayers.
机译:锂离子电池广泛使用储能单元。虽然磷烯提供高锂能力,但嵌入反应与转化反应之间的过渡能力仍然不清楚。我们研究了通过一致原理计算的Li插入磷烯和石墨烯/磷烯/石墨烯夹层的结构和电子性质。从C和P之间获得Li的竞争降低了层间P-P键的电荷消耗,提高了稳定性。重要的是,三明治表现出比独立磷烯更高的过渡能力,通过AB Initio分子动力学模拟证实。三层结构显示比单层更好的结构可逆性。

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