Wet chemical synthesis of Cu/TiO2 nanocomposites with integrated nano-current-collectors as high-rate anode materials in lithium-ion batteries‡

文献情報

出版日 2011-01-04

DOI 10.1039/C0CP01119C

インパクトファクター 3.676

著者

Yu-Guo Guo, Li-Jun Wan

原文を見る

要旨

Using a soft-template assisted method, well-organized Cu/TiO2 nanoarchitectured electrode materials with copper nanowires as their own current collectors are synthesized by controlled hydrolysis of tetrabutyl titanate in the presence of Cu-based nanowires, and investigated by SEM, TEM, XRD, Raman spectroscopy and electrochemical tests towards lithium storage. Two types of Cu/TiO2 nanocomposites with different TiO2 grain sizes are obtained by using different thermal treatments. The two types of Cu/TiO2 nanocomposites show much enhanced rate performances compared with bare TiO2. A high-rate capability (reversible capacity at 7500 mA g−1 still accounts for 58% of its initial capacity at 50 mA g−1) is observed for the Cu/TiO2 nanocomposite with smaller TiO2 grain size. The improvements can be attributed to the integrated Cu nanowires as mechanical supports and efficient current collectors. A cell made from the Cu/TiO2 nanoarchitectured electrodes exhibits promise as an energy storage device with both high energy and high power densities.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.