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Title: Surface/interface effects on high-performance thin-film all-solid-state Li-ion batteries

Journal Article · · ACS Applied Materials and Interfaces
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  1. Univ. of Maryland, College Park, MD (United States)
  2. U.S. Army Research Lab., Adelphi, MD (United States); National Institute of Standards and Technology, Gaithersburg, MD (United States)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)

The further development of all-solid-state batteries is still limited by the understanding/engineering of the interfaces formed upon cycling. Here, we correlate the morphological, chemical, and electrical changes of the surface of thin-film devices with Al negative electrodes. The stable Al–Li–O alloy formed at the stress-free surface of the electrode causes rapid capacity fade, from 48.0 to 41.5 μAh/cm2 in two cycles. Surprisingly, the addition of a Cu capping layer is insufficient to prevent the device degradation. Furthermore, Si electrodes present extremely stable cycling, maintaining >92% of its capacity after 100 cycles, with average Coulombic efficiency of 98%.

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States); Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC04-94AL85000; SC0001160
OSTI ID:
1341747
Report Number(s):
SAND-2016-12381J; 649746
Journal Information:
ACS Applied Materials and Interfaces, Vol. 7, Issue 47; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Li-Ion Synaptic Transistor for Low Power Analog Computing journal November 2016
A flexible Li-ion battery with design towards electrodes electrical insulation journal July 2016
Tape‐Casting Li 0.34 La 0.56 TiO 3 Ceramic Electrolyte Films Permit High Energy Density of Lithium‐Metal Batteries journal November 2019
Germanium Thin Film Protected Lithium Aluminum Germanium Phosphate for Solid-State Li Batteries journal February 2018
Kinetics‐Controlled Degradation Reactions at Crystalline LiPON/Li x CoO 2 and Crystalline LiPON/Li‐Metal Interfaces journal March 2018
A first principle comparative study of the ionic diffusivity in LiAlO 2 and NaAlO 2 polymorphs for solid-state battery applications journal January 2018
Ni–Al–Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries journal January 2018
Emerging Artificial Synaptic Devices for Neuromorphic Computing journal February 2019
Ni-Al-Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries text January 2018
Kinetics-Controlled Degradation Reactions at Crystalline LiPON/Li(x)CoO(2) and Crystalline LiPON/Li-metal Interfaces text January 2018