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Title: Transforming from planar to three-dimensional lithium with flowable interphase for solid lithium metal batteries

Abstract

Solid-state lithium (Li) metal batteries are prominent among next-generation energy storage technologies due to their significantly high energy density and reduced safety risks. Previously, solid electrolytes have been intensively studied and several materials with high ionic conductivity have been identified. However, there are still at least three obstacles before making the Li metal foil-based solid-state systems viable, namely, high interfacial resistance at the Li/electrolyte interface, low areal capacity, and poor power output. The problems are addressed by incorporating a flowable interfacial layer and three-dimensional Li into the system. The flowable interfacial layer can accommodate the interfacial fluctuation and guarantee excellent adhesion at all time, whereas the three-dimensional Li significantly reduces the interfacial fluctuation from the whole electrode level (tens of micrometers) to local scale (submicrometer) and also decreases the effective current density for high-capacity and high-power operations. As a consequence, both symmetric and full-cell configurations can achieve greatly improved electrochemical performances in comparison to the conventional Li foil, which are among the best reported values in the literature. Noticeably, solid-state full cells paired with high–mass loading LiFePO4 exhibited, at 80°C, a satisfactory specific capacity even at a rate of 5 C (110 mA·hour g-1) and a capacity retention of 93.6%more » after 300 cycles at a current density of 3 mA cm-2 using a composite solid electrolyte middle layer. In addition, when a ceramic electrolyte middle layer was adopted, stable cycling with greatly improved capacity could even be realized at room temperature.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1];  [1];  [1]; ORCiD logo [2]
  1. Stanford Univ., CA (United States)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1419638
Grant/Contract Number:  
AC02-76SF00515; award351198; Battery Materials Research (BMR) program; award351199; Battery 500 Consortium program
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 3; Journal Issue: 10; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Liu, Yayuan, Lin, Dingchang, Jin, Yang, Liu, Kai, Tao, Xinyong, Zhang, Qiuhong, Zhang, Xiaokun, and Cui, Yi. Transforming from planar to three-dimensional lithium with flowable interphase for solid lithium metal batteries. United States: N. p., 2017. Web. doi:10.1126/sciadv.aao0713.
Liu, Yayuan, Lin, Dingchang, Jin, Yang, Liu, Kai, Tao, Xinyong, Zhang, Qiuhong, Zhang, Xiaokun, & Cui, Yi. Transforming from planar to three-dimensional lithium with flowable interphase for solid lithium metal batteries. United States. https://doi.org/10.1126/sciadv.aao0713
Liu, Yayuan, Lin, Dingchang, Jin, Yang, Liu, Kai, Tao, Xinyong, Zhang, Qiuhong, Zhang, Xiaokun, and Cui, Yi. Sun . "Transforming from planar to three-dimensional lithium with flowable interphase for solid lithium metal batteries". United States. https://doi.org/10.1126/sciadv.aao0713. https://www.osti.gov/servlets/purl/1419638.
@article{osti_1419638,
title = {Transforming from planar to three-dimensional lithium with flowable interphase for solid lithium metal batteries},
author = {Liu, Yayuan and Lin, Dingchang and Jin, Yang and Liu, Kai and Tao, Xinyong and Zhang, Qiuhong and Zhang, Xiaokun and Cui, Yi},
abstractNote = {Solid-state lithium (Li) metal batteries are prominent among next-generation energy storage technologies due to their significantly high energy density and reduced safety risks. Previously, solid electrolytes have been intensively studied and several materials with high ionic conductivity have been identified. However, there are still at least three obstacles before making the Li metal foil-based solid-state systems viable, namely, high interfacial resistance at the Li/electrolyte interface, low areal capacity, and poor power output. The problems are addressed by incorporating a flowable interfacial layer and three-dimensional Li into the system. The flowable interfacial layer can accommodate the interfacial fluctuation and guarantee excellent adhesion at all time, whereas the three-dimensional Li significantly reduces the interfacial fluctuation from the whole electrode level (tens of micrometers) to local scale (submicrometer) and also decreases the effective current density for high-capacity and high-power operations. As a consequence, both symmetric and full-cell configurations can achieve greatly improved electrochemical performances in comparison to the conventional Li foil, which are among the best reported values in the literature. Noticeably, solid-state full cells paired with high–mass loading LiFePO4 exhibited, at 80°C, a satisfactory specific capacity even at a rate of 5 C (110 mA·hour g-1) and a capacity retention of 93.6% after 300 cycles at a current density of 3 mA cm-2 using a composite solid electrolyte middle layer. In addition, when a ceramic electrolyte middle layer was adopted, stable cycling with greatly improved capacity could even be realized at room temperature.},
doi = {10.1126/sciadv.aao0713},
journal = {Science Advances},
number = 10,
volume = 3,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}

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