Nb2O5 nanocrystals decorated graphene composites as anode materials for high-performance dual-ion batteries

被引：0
作者：
Lei Wang
Fei Huang
Guoyin Zhu
Zhihui Dai
机构：
[1] Nanjing Normal University,Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science
[2] Nanjing University of Information Science & Technology,Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science
[3] Nanjing Tech University,School of Chemistry and Molecular Engineering
来源：
Nano Research | 2024年 / 17卷
关键词：
niobium oxide; graphene; anode; dual-ion batteries; graphite intercalation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Niobium oxide (Nb2O5) is a promising material in photocatalytic, solar cell, electronic like electron field emitters, and especially lithium-ion batteries (LIBs) because of its adjustable morphologies, controllable crystal type, stable structure, and environmental friendliness. However, its low electrical conductivity lowers the rate performance and limits the practical applications in LIBs. Herein, we present a one-step solid-state synthesis of orthogonal Nb2O5 nanocrystals/graphene composites (Nb2O5/G) as high-performance anode materials in LIBs. Benefiting from the nanoscale crystalline structure Nb2O5 and highly-conductive graphene substrate, the as-prepared Nb2O5/G exhibits excellent electrochemical performances. Impressively, a reversible structural phase transition between orthogonal Nb2O5 and tetragonal Li1−xNbO2 (0 < x < 1) was verified by ex-situ transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). After coupling with graphite cathode based on PF6-intercalation/deintercalation mechanisms, Nb2O5/G∥graphite dual-ion batteries (DIBs) full cell delivers good electrochemical performance in terms of cyclic performance and rate capability. We believe this work can provide a clear route towards developing advanced transition metal oxide/graphene composite anode and a comprehension of its electrochemical reaction mechanism.
引用
收藏
页码：1535 / 1541
页数：6
相关论文
共 413 条
  • [1] Hao J C(2023)Competitive trapping of single atoms onto a metal carbide surface ACS Nano 17 6955-6965
  • [2] Zhu H(2023)A high-entropy atomic environment converts inactive to active sites for electrocatalysis Energy Environ. Sci. 16 619-628
  • [3] Zhuang Z C(2023)Tuning mass transport in electrocatalysis down to sub-5 nm through nanoscale grade separation Angew. Chem., Int. Ed. 62 e202212653-310
  • [4] Zhao Q(2023)Continuous modulation of electrocatalytic oxygen reduction activities of single-atom catalysts through Angew. Chem., Int. Ed. 62 e202212335-1028
  • [5] Yu R H(2022) junction rectification Nat. Catal. 5 300-951
  • [6] Hao J C(2021)Reversely trapping atoms from a perovskite surface for high-performance and durable fuel cell cathodes Energy Environ. Sci. 14 1016-78
  • [7] Kang Q(2023)Atomically dispersed nonmagnetic electron traps improve oxygen reduction activity of perovskite oxides Energy Environ. Sci. 16 889-313
  • [8] Lu S L(2023)Charge and mass transport mechanisms in two-dimensional covalent organic frameworks (2D COFs) for electrochemical energy storage devices Chin. Chem. Lett. 34 107493-468
  • [9] Wang X F(2023)Synergistic chemical and electrochemical strategy for high-performance Zn//MnO Adv. Energy Mater. 13 2204057-328
  • [10] Wu J S(2023) batteries Adv. Mater. 35 2207303-839
12345678910