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Xingfeng He
Researcher at University of Maryland, College Park
Publications - 32
Citations - 5860
Xingfeng He is an academic researcher from University of Maryland, College Park. The author has contributed to research in topics: Lithium & Electrolyte. The author has an hindex of 16, co-authored 30 publications receiving 3987 citations. Previous affiliations of Xingfeng He include Toyota & Foxconn.
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Journal ArticleDOI
Negating interfacial impedance in garnet-based solid-state Li metal batteries
Xiaogang Han,Yunhui Gong,Kun Kelvin Fu,Xingfeng He,Gregory T. Hitz,Jiaqi Dai,Alexander J. Pearse,Boyang Liu,Howard Wang,Gary W. Rubloff,Yifei Mo,Venkataraman Thangadurai,Eric D. Wachsman,Liangbing Hu +13 more
TL;DR: Experimental and computational results reveal that the oxide coating enables wetting of metallic lithium in contact with the garnet electrolyte surface and the lithiated-alumina interface allows effective lithium ion transport between the lithium metal anode and garnets electrolyte.
Journal ArticleDOI
Origin of Outstanding Stability in the Lithium Solid Electrolyte Materials: Insights from Thermodynamic Analyses Based on First-Principles Calculations
Yizhou Zhu,Xingfeng He,Yifei Mo +2 more
TL;DR: The results suggest that the outstanding stability of the solid electrolyte materials is not thermodynamically intrinsic but is originated from kinetic stabilizations, and general principles for developing solid electrolytes materials with enhanced stability and for engineering interfaces in all-solid-state Li-ion batteries are provided.
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Electrochemical Stability of Li10GeP2S12 and Li7La3Zr2O12 Solid Electrolytes
TL;DR: In this article, the intrinsic electrochemical stability window of solid electrolytes is calculated using first-principle computation methods, and an experimental method is developed to measure the intrinsic stability window using a Li/electrolyte/electronically-conducted carbon cell.
Journal ArticleDOI
First principles study on electrochemical and chemical stability of solid electrolyte–electrode interfaces in all-solid-state Li-ion batteries
Yizhou Zhu,Xingfeng He,Yifei Mo +2 more
TL;DR: In this paper, the authors performed first principles calculations to evaluate the thermodynamics of the interfaces between solid electrolyte and electrode materials and to identify the chemical and electrochemical stabilities of these interfaces.
Journal ArticleDOI
Origin of fast ion diffusion in super-ionic conductors.
Xingfeng He,Yizhou Zhu,Yifei Mo +2 more
TL;DR: Using ab initio modelling, it is shown that fast diffusion in super-ionic conductors does not occur through isolated ion hopping as is typical in solids, but instead proceeds through concerted migrations of multiple ions with low energy barriers.