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Title: Vertically Aligned and Continuous Nanoscale Ceramic–Polymer Interfaces in Composite Solid Polymer Electrolytes for Enhanced Ionic Conductivity

Journal Article · · Nano Letters
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [2];  [2]; ORCiD logo [2]; ORCiD logo [2];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Stanford Univ., Stanford, CA (United States); Univ. of Electronic Science and Technology of China, Sichuan (People's Republic of China)
  2. Stanford Univ., Stanford, CA (United States)
  3. Univ. of Electronic Science and Technology of China, Sichuan (People's Republic of China)
  4. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Among all solid electrolytes, composite solid polymer electrolytes, comprised of polymer matrix and ceramic fillers, garner great interest due to the enhancement of ionic conductivity and mechanical properties derived from ceramic–polymer interactions. Here, we report a composite electrolyte with densely packed, vertically aligned, and continuous nanoscale ceramic–polymer interfaces, using surface-modified anodized aluminum oxide as the ceramic scaffold and poly(ethylene oxide) as the polymer matrix. The fast Li+ transport along the ceramic–polymer interfaces was proven experimentally for the first time, and an interfacial ionic conductivity higher than 10–3 S/cm at 0 °C was predicted. The presented composite solid electrolyte achieved an ionic conductivity as high as 5.82 × 10–4 S/cm at the electrode level. In conclusion, the vertically aligned interfacial structure in the composite electrolytes enables the viable application of the composite solid electrolyte with superior ionic conductivity and high hardness, allowing Li–Li cells to be cycled at a small polarization without Li dendrite penetration.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC02-76SF00515; NCET-12-0098; 51472044
OSTI ID:
1470937
Journal Information:
Nano Letters, Vol. 18, Issue 6; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 233 works
Citation information provided by
Web of Science

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g-C 3 N 4 nanosheets enhanced solid polymer electrolytes with excellent electrochemical performance, mechanical properties, and thermal stability journal January 2019
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Building Better Batteries in the Solid State: A Review journal November 2019
Enhanced Surface Interactions Enable Fast Li + Conduction in Oxide/Polymer Composite Electrolyte journal January 2020
Recent Progress in Organic–Inorganic Composite Solid Electrolytes for All‐Solid‐State Lithium Batteries journal November 2019
Li + ‐Containing, Continuous Silica Nanofibers for High Li + Conductivity in Composite Polymer Electrolyte journal September 2019
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