Laser‐Assisted Fabrication of Pseudohexagonal Phase Niobium Pentoxide Nanopillars for Lithium Ion Battery Anodes,ChemNanoMat

当前位置： X-MOL 学术 › ChemNanoMat › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Laser‐Assisted Fabrication of Pseudohexagonal Phase Niobium Pentoxide Nanopillars for Lithium Ion Battery Anodes
ChemNanoMat ( IF 2.6 ) Pub Date : 2019-11-19 , DOI: 10.1002/cnma.201900532
Dewei Liang ₁ , Lei Hu ₁ , Lili Wang ₁ , Lingli Liu ₁ , Sheng Liang ₁ , Lei Yang ₁ , Ningning Zhou ₁ , Changhao Liang ₂

Affiliation

Herein, we report a convenient route to fabricate pseudohexagonal phase niobium pentoxide (TT‐Nb₂O₅) nanopillars via combination of laser ablation in liquids (LAL) and hydrothermal treatment without using any organic surfactants or stabilizers. The morphology and structure of the as‐synthesized samples are investigated through scanning and transmission electron microscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy. Such nanopillars exhibit excellent lithium storage properties, including high reversible capacity, good rate capability, and excellent cycle stability (81% capacity retention after 1000 cycles) at a rate of 5 C in the potential range of 1.0 to 3.0 V, which is higher than other previously reported Nb₂O₅‐based electrode. The synergistic effects from the nanopillar morphology, high electronic conductivity and stable structure promise potential applications in high‐security and high‐rate capability Li‐ion batteries.

中文翻译：

用于锂离子电池阳极的伪六方相五氧化二铌纳米柱的激光辅助制备。

在本文中，我们报告了一种通过在液体（LAL）中进行激光烧蚀和水热处理而无需使用任何有机表面活性剂或稳定剂的组合来制造伪六方相五氧化二铌（TT-Nb ₂ O ₅）纳米柱的便捷方法。通过扫描和透射电子显微镜，X射线衍射和X射线光电子能谱研究合成样品的形态和结构。此类纳米柱在5 C的电势范围为1.0至3.0 V时显示出优异的锂存储性能，包括高可逆容量，良好的倍率性能和出色的循环稳定性（1000次循环后81％的容量保持率），高于其他先前报告的Nb ₂ O ₅基于电极。纳米柱形态，高电子电导率和稳定结构的协同效应有望在高安全性和高倍率能力的锂离子电池中应用。

更新日期：2019-11-19

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11