Battery materials as emerging capacitive deionization electrodes for desalination have better salt removal capacities than tra-ditional carbon-based materials.LiMn2O4,a widely used cathode mate-rial,is difficult to utilize as a deionization electrode due to its structural instability upon cycling and Mn dissolution in aqueous-based electro-lytes.Herein,a facile and low-cost ball-milling routine was proposed to prepare a LiMn2O4 material with highly exposed(111)facets.The prepared electrode exhibited relatively low dissolution of Mn during cycling,which shows its long cycle stability.In the hybrid capacitive deionization system,the LiMn2O4/C electrode delivered a high desali-nation capacity of 117.3 mg g-1 without obvious capacity decay at a voltage of 1.0 V with a 20 mM initial salt concentration.In addition,the exposed(111)facets significantly alleviated Mn ion dissolution,which also enhanced the structural steadiness.

Yuxin Jiang;Liyuan Chai;Dehe Zhang;Fangping Ouyang;Xiangyuan Zhou;Sikpaam I.Alhassan;Sailin Liu;Yingjie He;Lvji Yan;Haiying Wang;Wenchao Zhang

School of Metallurgy and Environment,Central South University,Changsha 410083,People's Republic of China;Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution,Changsha 410083,People's Republic of China;Water Pollution Control Technology Key Lab of Hunan Province,Changsha 410083,People's Republic of China;School of Physics and Electronics,Hunan Key Laboratory for Super-Microstructure and Ultrafast Process,and Hunan Key Laboratory of Nanophotonics and Devices,Central South University,Changsha 410083,People's Republic of China;State Key Laboratory of Powder Metallurgy,and Powder Metallurgy Research Institute,Central South University,Changsha 410083,People's Republic of China;School of Chemical Engineering and Advanced Materials,Faculty of Sciences,Engineering and Technology,The University of Adelaide,Adelaide 5005,Australia

纳微快报（英文）

[1]Yuxin Jiang;Liyuan Chai;Dehe Zhang;Fangping Ouyang;Xiangyuan Zhou;Sikpaam I.Alhassan;Sailin Liu;Yingjie He;Lvji Yan;Haiying Wang;Wenchao Zhang-.Facet-Controlled LiMn2O4/C as Deionization Electrode with Enhanced Stability and High Desalination Performance)[J].纳微快报（英文）,2022(11):75-86

Deionization,desali

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