多金属氧酸盐辅助TiO2纳米颗粒的合成及其在水相杂化电化学电容器中的应用

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2011-10-11 DOI:10.1021/am200988q

Jiao Yin, Li Qi, Hongyu Wang*

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引用次数: 32

摘要

提出了一种温和水解制备TiO2纳米粒子的方法，多金属氧酸盐调节水解反应速率，控制TiO2的粒径。通过XRD、SEM、TEM、XPS对合成的TiO2纳米粒子进行了表征。电化学研究表明，制备的TiO2纳米粒子在锂离子水溶液中的比电容高于散装样品和商业样品。此外，还研究了TiO2纳米粒子的电荷存储机理。更重要的是，构建了基于活性炭(AC)和TiO2的水性杂化电容器，并对其在水溶液中的电化学性能进行了全面的研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Polyoxometalate-Assisted Synthesis of TiO2 Nanoparticles and Their Applications in Aqueous Hybrid Electrochemical Capacitors

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Polyoxometalate-Assisted Synthesis of TiO2 Nanoparticles and Their Applications in Aqueous Hybrid Electrochemical Capacitors

A mild hydrolysis method was proposed to synthesize TiO₂ nanoparticles (NPs), in which polyoxometalate adjusted the hydrolyzation reaction rate and controlled the size of TiO₂. The resultant TiO₂ NPs were fully characterized via XRD, SEM, TEM, XPS. The electrochemical investigations demonstrated that the as-obtained TiO₂ NPs delivered higher specific capacitance than that of bulk and commercial samples in lithium-ion aqueous solution. Furthermore, the charge storage mechanism of TiO₂ NPs was also studied. More importantly, the aqueous hybrid capacitors based on activated carbon (AC) and TiO₂ were constructed and their electrochemical performance were fully investigated in aqueous solutions.

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.