气候变化领域集成服务门户(CCPortal): Tracking ion intercalation into layered Ti3C2MXene films across length scales

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DOI	10.1039/d0ee01580f
	Tracking ion intercalation into layered Ti3C2MXene films across length scales
	Gao Q.; Sun W.; Ilani-Kashkouli P.; Tselev A.; Kent P.R.C.; Kabengi N.; Naguib M.; Alhabeb M.; Tsai W.-Y.; Baddorf A.P.; Huang J.; Jesse S.; Gogotsi Y.; Balke N.
发表日期	2020
ISSN	17545692
起始页码	2549
结束页码	2558
卷号	13 期号:8
英文摘要	Enhancing the energy stored and power delivered by layered materials relies strongly on improved understanding of the intricate interplay of electrolyte ions, solvents, and electrode interactions as well as the role of confinement. Here we report a highly integrated study with multiscale theory/modelling and experiments to track the intercalation of aqueous Li+, Na+, K+, Cs+, and Mg2+ ions into Ti3C2 MXene. The integrated analysis of experiments assisted by theory/modelling allows for a deep understanding of energy storage processes highlighting the importance of the dynamics of cations, their positionings between MXene sheets, their effects on mechanical properties and capacitive energy storage. Computational simulations and operando calorimetry measurements prove the processes involving cation dehydration and H+ rehydration, showing a good correlation for heat variations between experiments and theory. Operando liquid AFM mapped energy dissipation of ions appears non-uniformly across the MXene surface, indicating heterogeneities of ions inside the MXene and confirming partially the ion behaviour obtained in theory. We directly demonstrate that the average distance between the cation and MXene surface follows a modified two-sided Helmholtz model when plotted versus the open circuit potential capacitance, revealing a different electrical double layer mechanism in confinement. This new fundamental understanding lays the foundation for improved functional devices utilizing electrodes and membranes made of two-dimensional materials. © 2020 The Royal Society of Chemistry.
英文关键词	Cesium compounds; Electrodes; Electrolytes; Energy dissipation; Energy storage; Magnesium compounds; Membranes; Positive ions; Titanium compounds; Capacitive energy storage; Computational simulation; Electrical double layers; Electrode interactions; Integrated analysis; Multiscale theories; Open circuit potential; Two-dimensional materials; Computation theory; dehydration; electrode; electrolyte; energy dissipation; energy storage; ion exchange; mechanical property; solvent; tracking
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189589
作者单位	Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, China; Department of Geosciences, Georgia State University, Atlanta, GA 30303, United States; Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, 3810-193, Portugal; Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; Department of Physics and Engineering Physics, 2001 Percival Stern Hall, Tulane University, New Orleans, LA 70118, United States; Department of Materials Science and Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, United States
推荐引用方式 GB/T 7714	Gao Q.,Sun W.,Ilani-Kashkouli P.,et al. Tracking ion intercalation into layered Ti3C2MXene films across length scales[J],2020,13(8).
APA	Gao Q..,Sun W..,Ilani-Kashkouli P..,Tselev A..,Kent P.R.C..,...&Balke N..(2020).Tracking ion intercalation into layered Ti3C2MXene films across length scales.Energy & Environmental Science,13(8).
MLA	Gao Q.,et al."Tracking ion intercalation into layered Ti3C2MXene films across length scales".Energy & Environmental Science 13.8(2020).