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DOI	10.1039/c7ee00534b
	Compatibility issues between electrodes and electrolytes in solid-state batteries
	Tian Y.; Shi T.; Richards W.D.; Li J.; Kim J.C.; Bo S.-H.; Ceder G.
发表日期	2017
ISSN	17545692
起始页码	1150
结束页码	1166
卷号	10 期号:5
英文摘要	Remarkable success has been achieved in the discovery of ceramic alkali superionic conductors as electrolytes in solid-state batteries; however, obtaining a stable interface between these electrolytes and electrodes is difficult. Only limited studies on the compatibility between electrodes and solid electrolytes have been reported, partially because of the need for expensive instrumentation and special cell designs. Without simple yet powerful tools, these compatibility issues cannot be systematically investigated, thus hindering the generalization of design rules for the integration of solid-state battery components. Herein, we present a methodology that combines density functional theory calculations and simple experimental techniques such as X-ray diffraction, simultaneous differential scanning calorimetry and thermal gravimetric analysis, and electrochemistry to efficiently screen the compatibility of numerous electrode/electrolyte pairs. We systemically distinguish between the electrochemical stability of the solid-state conductor, which is relevant wherever the electrolyte contacts an electron pathway, and the electrochemical stability of the electrode/electrolyte interfaces. For the solid electrolyte, we are able to computationally derive an absolute thermodynamic stability voltage window, which is small for Na3PS4 and Na3PSe4, and a larger voltage window which can be kinetically stabilized. The experimental stability, when measured with reliable techniques, falls between these thermodynamic and kinetic limits. Employing a Na solid-state system as an example, we demonstrate the efficiency of our method by finding the most stable system (NaCrO2Na3PS4Na-Sn) within a selected chemical space (more than 20 different combinations of electrodes and electrolytes). Important selection criteria for the cathode, electrolyte, and anode in solid-state batteries are also derived from this study. The current method not only provides an essential guide for integrating all-solid-state battery components but can also significantly accelerate the expansion of the electrolyte/electrode compatibility data. © 2017 The Royal Society of Chemistry.
英文关键词	Contacts (fluid mechanics); Density functional theory; Differential scanning calorimetry; Electric batteries; Electrochemistry; Electrodes; Electrolytes; Gravimetric analysis; Interface states; Stability; Thermogravimetric analysis; X ray diffraction; All-solid state batteries; Electrochemical stabilities; Electrode/electrolyte interfaces; Experimental techniques; Solid state batteries; Solid-state conductors; Super ionic conductors; Thermal gravimetric analysis; Solid electrolytes; electrical conductivity; electrochemical method; electrochemistry; electrode; electrolyte; equipment; instrumentation; thermodynamics; thermogravimetry; X-ray diffraction
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/190547
作者单位	Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, United States; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Tian Y.,Shi T.,Richards W.D.,et al. Compatibility issues between electrodes and electrolytes in solid-state batteries[J],2017,10(5).
APA	Tian Y..,Shi T..,Richards W.D..,Li J..,Kim J.C..,...&Ceder G..(2017).Compatibility issues between electrodes and electrolytes in solid-state batteries.Energy & Environmental Science,10(5).
MLA	Tian Y.,et al."Compatibility issues between electrodes and electrolytes in solid-state batteries".Energy & Environmental Science 10.5(2017).