Dynamic spatial progression of isolated lithium during battery operations
- Stanford Univ., CA (United States)
- Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
The increasing demand for next-generation energy storage systems necessitates the development of high-performance lithium batteries. Unfortunately, current Li anodes exhibit rapid capacity decay and a short cycle life, owing to the continuous generation of solid electrolyte interface and isolated Li (i-Li). The formation of i-Li during the nonuniform dissolution of Li dendrites leads to a substantial capacity loss in lithium batteries under most testing conditions. Because i-Li loses electrical connection with the current collector, it has been considered electrochemically inactive or ‘dead’ in batteries. In this work, contradicting this commonly accepted presumption, we show that i-Li is highly responsive to battery operations, owing to its dynamic polarization to the electric field in the electrolyte. Simultaneous Li deposition and dissolution occurs on two ends of the i-Li, leading to its spatial progression toward the cathode (anode) during charge (discharge). Revealed by our simulation results, the progression rate of i-Li is mainly affected by its length, orientation and the applied current density. Moreover, we successfully demonstrate the recovery of i-Li in Cu–Li cells with >100% Coulombic efficiency and realize LiNi0.5Mn0.3Co0.2O2 (NMC)–Li full cells with extended cycle life.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1878582
- Journal Information:
- Nature (London), Journal Name: Nature (London) Journal Issue: 7890 Vol. 600; ISSN 0028-0836
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Designable ultra-smooth ultra-thin solid-electrolyte interphases of three alkali metal anodes
|
journal | April 2018 |
An ultrathin ionomer interphase for high efficiency lithium anode in carbonate based electrolyte
|
journal | December 2019 |
Synergistic Effects of Salt Concentration and Working Temperature towards Dendrite-Free Lithium Deposition
|
journal | October 2019 |
Similar Records
CoO nanofiber decorated nickel foams as lithium dendrite suppressing host skeletons for high energy lithium metal batteries
Electrokinetic Phenomena Enhanced Lithium-Ion Transport in Leaky Film for Stable Lithium Metal Anodes
Tackling issues of lithium metal anodes with a novel polymeric lithicone coating
Journal Article
·
Wed May 16 20:00:00 EDT 2018
· Energy Storage Materials
·
OSTI ID:1473663
Electrokinetic Phenomena Enhanced Lithium-Ion Transport in Leaky Film for Stable Lithium Metal Anodes
Journal Article
·
Sun Apr 28 20:00:00 EDT 2019
· Advanced Energy Materials
·
OSTI ID:1657241
Tackling issues of lithium metal anodes with a novel polymeric lithicone coating
Journal Article
·
Tue Sep 26 20:00:00 EDT 2023
· Chemical Engineering Journal
·
OSTI ID:2500804