Upgrading Traditional Organic Electrolytes toward Future Lithium Metal Batteries: A Hierarchical Nano-SiO2-Supported Gel Polymer Electrolyte
Source abstract
Abstract
Developing safe and high-energy-density lithium metal batteries (LMBs) is considered to be the focus of next-generation rechargeable batteries. However, the inevitable lithium reaction with the liquid electrolyte and the subsequent formation of Li dendrites must be overcome, and upgrading traditional liquid electrolytes is a key strategy for achieving this goal. Here, we report a nano-SiO2-supported gel polymer electrolyte (SiO2-GPE) with a hierarchical structure fabricated via in situ gelation of a traditional organic liquid electrolyte supported on a functionally modified SiO2 layer, which displayed high ionic conductivity (1.98 × 10–3 S cm–1 at 25 °C) and wide electrochemical window (>4.9 V vs Li/Li+). The LiFePO4/SiO2-GPE/Li cells exhibited a high capacity of 125.5 mAh g–1 at 1 C with capacity retention of 88.42% after 700 cycles. The superior electrochemical performance is mainly due to the highly compatible electrode/electrolyte interface and the effective inhibition of Li dendrite growth provided by the synergistic effects of this SiO2-GPE membrane.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, Shanghai 200245, China
Funding
Welch Foundation · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Natural Science Foundation of Shaanxi Province · Key Research and Development Plan of Shaanxi Province · ?1000-Plan program? of Shaanxi Province · Young Talent Support Plan? of Xi?an Jiaotong University
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