在FeO微盘上的定向横向生长的NiCoO纳米线阵列作为高容量和优异倍率性能的二次电池阳极。

An oriented laterally-growing NiCoO nanowire array on a FeO microdisc as a high-capacity and excellent rate-performance secondary battery anode.

作者信息

Liu Jinyun, Ding Yingyi, Han Tianli, Long Jiawei, Pei Xiaodong, Luo Yanhua, Bao Weidong, Lin Xirong, Zhang Haikuo

机构信息

Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China.

Nanjing New Materials Research Institute Co., Ltd. of Sinosteel, Nanjing, Jiangsu 211106, P. R. China.

出版信息

Chem Commun (Camb). 2020 Feb 27;56(17):2618-2621. doi: 10.1039/d0cc00553c.

DOI:10.1039/d0cc00553c

PMID:32016255

Abstract

A novel hierarchical composite consisting of an ordered NiCo2O4 nanowire array growing on the lateral side of a Fe2O3 microdisc is presented, which was confirmed by X-ray holography technology on a synchrotron radiation station. The composite-based Li-ion battery anode exhibits a high capacity of 1528 mA h g-1 after 200 cycles at 0.2C, a recoverable rate-performance after repeated tests, and robust mechanical properties.

摘要

本文展示了一种新型的分级复合材料，它由生长在Fe2O3微盘侧面的有序NiCo2O4纳米线阵列组成，这一结构在同步辐射站上通过X射线全息技术得到了证实。基于这种复合材料的锂离子电池阳极在0.2C下经过200次循环后表现出1528 mA h g-1的高容量、重复测试后可恢复的倍率性能以及稳健的机械性能。