用于锂离子电池的Keggin多金属氧酸盐簇与还原氧化石墨烯的纳米杂交
Nanohybridization of Keggin polyoxometalate clusters and reduced graphene oxide for lithium-ion batteries.
作者信息
Shi Xiaoyu, Chu Yiyue, Wang Ya, Fang Zhiqiang, Liu Zixuan, Deng Yijia, Dong Qingsong, Hao Zhaomin
机构信息
Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Henan, China.
出版信息
J Nanopart Res. 2020;23(2):41. doi: 10.1007/s11051-020-05108-x. Epub 2021 Feb 3.
UNLABELLED
The nanocomposites of reduced graphene oxide (RGO) and polyoxometalates (POMs) have been considered to be effective to boost more Li to participate in intercalation/deintercalation process of lithium-ion batteries (LIBs). In this paper, a nanocomposite (PMo@RGO-AIL) with electrostatic interaction of RGO and Keggin-type [PMoO] has been fabricated and characterized by XRD, XPS, SEM, and TEM. To prepare PMo@RGO-AIL, a strategy of covalent modification is developed between amino-based ionic liquid and RGO, helping to achieve the uniform dispersion of [PMoO]. When the PMo@RGO-AIL was used as a cathode for LIBs, it could exhibit more excellent reversible capacity, cycle stability, and rate capability than those of samples without modifying by ionic liquids.
SUPPLEMENTARY INFORMATION
The online version contains supplementary material available at 10.1007/s11051-020-05108-x.
未标注
还原氧化石墨烯（RGO）和多金属氧酸盐（POMs）的纳米复合材料被认为能有效地促使更多锂参与锂离子电池（LIBs）的嵌入/脱嵌过程。本文制备了一种具有RGO与Keggin型[PMoO]静电相互作用的纳米复合材料（PMo@RGO-AIL），并通过XRD、XPS、SEM和TEM对其进行了表征。为制备PMo@RGO-AIL，开发了一种氨基离子液体与RGO之间的共价修饰策略，有助于实现[PMoO]的均匀分散。当PMo@RGO-AIL用作LIBs的阴极时，它比未用离子液体改性的样品表现出更优异的可逆容量、循环稳定性和倍率性能。
补充信息
在线版本包含可在10.1007/s11051-020-05108-x获取的补充材料。
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