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Low-temperature and high-rate-charging lithium metal batteries enabled by an electrochemically active monolayer-regulated interface

Journal Article · · Nature Energy
 [1];  [2];  [3];  [2];  [2];  [2];  [2];  [2];  [4]
  1. Pennsylvania State Univ., University Park, PA (United States); PENNSYLVANIA STATE UNIVERSITY, DEPARTMENT OF MECHANICAL ENGINEERING
  2. Pennsylvania State Univ., University Park, PA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Ohio Univ., Athens, OH (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
Stable operation of rechargeable lithium (Li)-based batteries at low temperatures is vital for cold-climate applications but is plagued with dendritic Li plating and unstable solid-electrolyte interphase (SEI). Here we report high-performance Li-metal batteries under low-temperature and high-rate-charging conditions. This is realized by utilizing a self-assembled monolayer of electrochemically active molecules on current collectors that regulates the nanostructure and composition of SEI and deposition morphology of Li metal anodes. A multilayer SEI containing a LiF-rich inner phase and amorphous outer layer effectively seals the Li surface in contrast to the conventional impassive SEI at low temperatures. As a result, galvanic Li corrosion and self-discharge were suppressed; stable Li deposition was realized from -60º to 45ºC; and a Li|LiCoO2 cell with a capacity of 2.0 mAh cm-2 displayed a 200-cycle life at -15ºC with a recharge time of 45 minutes.
Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
EE0008198
OSTI ID:
1633448
Alternate ID(s):
OSTI ID: 1643792
Journal Information:
Nature Energy, Journal Name: Nature Energy Journal Issue: 7 Vol. 5; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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