FeOOH nanorods (NRs) wrapped by reduced graphene oxide (rGO) were fabricated using a facile solvothermal method. When used as anode materials for lithium-ion batteries (LIBs), the FeOOH NRs/rGO composites show a higher capacity (490[Formula: see text]mAh g[Formula: see text] after 100 cycles at a current density of 100[Formula: see text]mA g[Formula: see text] and better rate capability than pure FeOOH NRs. The enhanced electrochemical performance can be ascribed to the hybrid structure of FeOOH and rGO. On one hand, the introduction of rGO can improve electronic conductivity and reduce charge-transfer resistance for electrode materials. On the other hand, the distinctive structure (FeOOH NRs surrounded by flexible rGO) can effectively buffer large volume change during the Li[Formula: see text] insertion/extraction process. Our work provides a feasible strategy to obtain high-performance LIBs.

中文翻译：

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石墨烯包裹的 FeOOH 纳米棒具有增强的锂离子电池负极性能

使用简便的溶剂热法制造被还原氧化石墨烯 (rGO) 包裹的 FeOOH 纳米棒 (NRs)。当用作锂离子电池 (LIBs) 的负极材料时，FeOOH NRs/rGO 复合材料在电流密度为 100 [公式：见正文]mA g[公式：见正文]和比纯FeOOH NRs更好的倍率性能。增强的电化学性能可以归因于FeOOH和rGO的混合结构。一方面，rGO的引入可以提高电子电导率并降低电极材料的电荷转移电阻。另一方面，独特的结构（由柔性 rGO 包围的 FeOOH NRs）可以有效地缓冲 Li [公式：见正文]插入/提取过程中的大体积变化。