Tunable Pseudocapacitive Behavior in Metal–Organic Framework-Derived TiO2@Porous Carbon Enabling High-Performance Membrane Capacitive Deionization

IF 5.5 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2019-02-11 DOI:10.1021/acsaem.8b01839

Meng Ding, Shuang Fan, Shaozhuan Huang, Mei Er Pam, Lu Guo, Yumeng Shi, Hui Ying Yang*

{"title":"Tunable Pseudocapacitive Behavior in Metal–Organic Framework-Derived TiO2@Porous Carbon Enabling High-Performance Membrane Capacitive Deionization","authors":"Meng Ding, Shuang Fan, Shaozhuan Huang, Mei Er Pam, Lu Guo, Yumeng Shi, Hui Ying Yang*","doi":"10.1021/acsaem.8b01839","DOIUrl":null,"url":null,"abstract":"Titanium dioxide (TiO2) composites have shown promise in desalination as electrode materials of capacitive deionization (CDI). However, it remains a significant challenge to explore their pseudocapacitive potential for further enhancement of salt adsorption capacity and long-term stability. Herein, we report a titanium dioxide/porous carbon composite (TiO2@PC) with tunable pseudocapacitance for a high-performance membrane CDI (MCDI) based on a metal–organic frameworks (MOFs)-derived strategy. By controlling the pyrolysis conditions, the crystalline degree and specific surface areas of TiO2@PC samples have been optimized to improve the salt adsorption performance. A synergy of high pseudocapacitance and good oxidation resistance endows the anatase TiO2@PC (annealed at 600 °C) with an improved salt adsorption capacity of 46.7 mg g–1 at 10 mA g–1 and stable cycling performance over 50 cycles. These properties reveal the great potential of anatase TiO2@PC to serve as a promising candidate of electrode materials for MCDI.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"2 3","pages":"1812–1822"},"PeriodicalIF":5.5000,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acsaem.8b01839","citationCount":"41","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.8b01839","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 41

Abstract

Titanium dioxide (TiO₂) composites have shown promise in desalination as electrode materials of capacitive deionization (CDI). However, it remains a significant challenge to explore their pseudocapacitive potential for further enhancement of salt adsorption capacity and long-term stability. Herein, we report a titanium dioxide/porous carbon composite (TiO₂@PC) with tunable pseudocapacitance for a high-performance membrane CDI (MCDI) based on a metal–organic frameworks (MOFs)-derived strategy. By controlling the pyrolysis conditions, the crystalline degree and specific surface areas of TiO₂@PC samples have been optimized to improve the salt adsorption performance. A synergy of high pseudocapacitance and good oxidation resistance endows the anatase TiO₂@PC (annealed at 600 °C) with an improved salt adsorption capacity of 46.7 mg g^–1 at 10 mA g^–1 and stable cycling performance over 50 cycles. These properties reveal the great potential of anatase TiO₂@PC to serve as a promising candidate of electrode materials for MCDI.

Abstract Image

查看原文本刊更多论文

金属有机框架衍生TiO2@Porous碳实现高性能膜电容去离子的可调伪电容行为

二氧化钛(TiO2)复合材料作为电容性去离子(CDI)电极材料在海水淡化领域具有广阔的应用前景。然而，探索其赝电容潜力以进一步提高盐吸附能力和长期稳定性仍然是一个重大挑战。在此，我们报道了一种具有可调赝电容的二氧化钛/多孔碳复合材料(TiO2@PC)，用于基于金属有机框架(mof)衍生策略的高性能膜CDI (MCDI)。通过控制热解条件，优化TiO2@PC样品的结晶度和比表面积，提高其对盐的吸附性能。高赝电容和良好抗氧化性的协同作用使锐钛矿TiO2@PC(600°C退火)在10 mA g-1下的盐吸附容量提高到46.7 mg g-1，并且在50次循环中具有稳定的循环性能。这些性质揭示了锐钛矿TiO2@PC作为MCDI电极材料的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.