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Correlating Electrode-Electrolyte Interface and Battery Performance in Hybrid Solid Polymer Electrolyte-Based Lithium Metal Batteries
Journal article   Peer reviewed

Correlating Electrode-Electrolyte Interface and Battery Performance in Hybrid Solid Polymer Electrolyte-Based Lithium Metal Batteries

Qiwei Pan, Dmitri Barbash, Derrick M. Smith, Hao Qi, Sarah E. Gleeson and Christopher Y. Li
Advanced energy materials, v 7(22), pp 1-10
22 Nov 2017

Abstract

Chemistry Chemistry, Physical Energy & Fuels Materials Science Materials Science, Multidisciplinary Physical Sciences Physics Physics, Applied Physics, Condensed Matter Science & Technology Technology
Solid polymer electrolytes (SPEs) are desirable in lithium metal batteries (LMBs) since they are nonflammable and show excellent lithium dendrite growth resistance. However, fabricating high performance polymer LMBs is still a grand challenge because of the complex battery system. In this work, a series of tailor-designed hybrid SPEs are used to prepare LMBs with a LiFePO4-based cathode. High performance LMBs with both excellent rate capability and long cycle life are obtained at 60 and 90 degrees C. The well-controlled network structure in this series of hybrid SPEs offers a model system to study the relationship between the SPE properties and the LMB performance. It is shown that the cycle life of the polymer LMBs is closely correlated with the SPE-Li interface ionic conductivity, underscoring the importance of the solid electrolyte interface in LMB operation. LMB performance is further correlated with the molecular network structure. It is anticipated that results from this study will shed light on designing SPEs for high performance LMB applications.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
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