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Regulated lithium ionic flux through well-aligned channels for lithium dendrite inhibition in solid-state batteries

Journal Article · · Energy Storage Materials
 [1];  [2];  [3];  [4];  [2];  [3];  [3];  [4];  [2];  [3]
  1. Univ. of Louisville, KY (United States). Conn Center for Renewable Energy Research; Univ. of Louisville, KY (United States)
  2. Northeastern Univ., Boston, MA (United States)
  3. Univ. of Louisville, KY (United States). Conn Center for Renewable Energy Research
  4. Univ. of Texas, Arlington, TX (United States)
The utilization of solid electrolyte (SE) to suppress lithium (Li) dendrites is promising but still far from satisfactory due to the inhomogeneous Li plating/stripping. In this paper, we demonstrated a novel strategy to inhibit Li dendrites via regulating Li-ion flux in SE by using vertically aligned channels. The ion-insulating walls facilitated uniform distribution of Li-ion flux through the channels, leading to a homogeneous Li deposition, thus alleviating Li dendrite formation. As a result, symmetric cells with this SE exhibited excellent long-term stability (1000 h) against Li metal. In addition, Li4Ti5O12 (LTO)/Li cell with the developed SE achieved good battery performance over 100 cycles. The mechanism for dendrite suppression was further investigated by phase-field simulation. This work provides a novel strategy by manipulating uniform Li-ion flux to fabricate SE to inhibit Li dendrites and facilitates the development of high-performance rechargeable Li batteries.
Research Organization:
Univ. of Louisville, KY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0008866
OSTI ID:
1848921
Alternate ID(s):
OSTI ID: 1809834
Journal Information:
Energy Storage Materials, Journal Name: Energy Storage Materials Journal Issue: C Vol. 31; ISSN 2405-8297
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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