文献类型：期刊文献

英文题名：Partially reduced holey graphene oxide for high performance capacitive deionization

作者：Wang, Rui[1];Fang, Biao[1];Liang, Han[1];Zhao, Chenpeng[1];Mo, Runwei[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200030, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2025

卷号：301

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20244017123616);WOS:【SCI-EXPANDED(收录号:WOS:001328035800001)】；

基金：This research was supported by Shanghai pilotProgram for Basic Research (grant no. 22TQ1400100-8) , Shanghai Pujiang Program (grant no. 20PJ1402500) , Natural Science Foundation of Shanghai (grant no. 22ZR1416600) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Capacitive deionization; In-plane pore structure; Partially reduction of graphene oxide; Desalination

摘要：Capacitive deionization (CDI) is a technology with excellent potential for applications in the field of desalination and water treatment. Graphene is considered to be an ideal material in the field of CDI due to its large surface area and high electrical conductivity. However, the severe pi-pi restacking of graphene sheets leads to problems such as long ion transport distances and small interlayer distances, which result in low desalination capacity and poor cycling performance. Herein, we prepared partially reduced holey graphene oxide by H2O2 treatment and subsequent ascorbic acid reduction of graphene oxide, which led to high specific capacitance and cyclic stability. The partially remaining oxygen-containing functional groups can act as spacers to effectively prevent pi-pi stacking phenomenon from occurring in graphene sheets, which provides sufficient storage space to facilitate the rapid transfer of ions. As electrode material for CDI, the electrode delivers a desalination capacity as high as 22.4 mg g(-1) (applied potential: 1.4 V; initial NaCl concentration: 1500 ppm) and good cycling performance (desalination capacity retention of 81.5 % after 50 cycles). This rational combination of surface etching and partial reduction strategies can be used to fabricate high-performance CDI electrodes, which are expected to be applied to other energy storage and conversion systems.