skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Tailoring the Ag+ Content within the Tunnels and on the Exposed Surfaces of α-MnO2 Nanowires: Impact on Impedance and Electrochemistry

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0261701jes· OSTI ID:1388747
 [1];  [1];  [2];  [2];  [2];  [3];  [4];  [4]
  1. Stony Brook Univ., NY (United States). Dept. of Chemistry
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
  3. Stony Brook Univ., NY (United States). Dept. of Chemistry and Department of Materials Science and Engineering; Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
  4. Stony Brook Univ., NY (United States). Dept. of Chemistry and Department of Materials Science and Engineering
+ Show Author Affiliations

Efficient conduction of both electrons and cations (e.g., Li+) has a profound effect on the current and capacity of lithium-based batteries. With this study, we focus on cathode effects, with the preparation of pure silver hollandite materials with variable silver ion content within (intra-tunnel) and on the surface of α-MnO2 tunneled materials, followed by the measurement and analysis of impedance and electrochemistry data. Specifically, pure AgxMn8O16-y materials with low (x = 1.13) and high (x = 1.54) intra-tunnel silver content are compared with AgxMn8O16-y·aAg2O (a = 0.25, 0.63, 1.43) composites prepared via a new Ag2O coating strategy. When the Ag2O (a = 0, 0.25) content is low, the material with higher intra-tunnel silver (x = 1.53) content delivers up to ~5-fold higher capacity accounted for by a ~10-fold lower impedance than its lower intra-tunnel silver (x = 1.13) counterpart. In the presence of high Ag2O content (a = 0.63, 1.43), both composites exhibit comparable impedance but the lower intra-tunnel silver (x = 1.13) composite delivers up to ~1.5-fold higher capacity than higher intra-tunnel silver composite, highlighting the key role of Li+ transport under those conditions. Our results demonstrate material design strategies which can significantly increase electronic and ionic conductivities.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2M)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0012673; SC0012704
OSTI ID:
1388747
Journal Information:
Journal of the Electrochemical Society, Vol. 164, Issue 1; Related Information: m2M partners with Stony Brook University (lead); Brookhaven National Laboratory; Columbia University; Georgia Institute of Technology; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; University of California, Berkeley; University of North Carolina at Chapel Hill; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (29)

A simple preparation method for spherical carbons and their anodic performance in lithium secondary batteries journal January 2004
Electrochemical Reduction of Silver Vanadium Phosphorus Oxide, Ag 2 VO 2 PO 4 : The Formation of Electrically Conductive Metallic Silver Nanoparticles journal October 2009
Caramel Popcorn Shaped Silicon Particle with Carbon Coating as a High Performance Anode Material for Li-Ion Batteries journal October 2013
Capture Lithium in αMnO 2 : Insights from First Principles journal October 2012
Structural, Magnetic and Electronic Transport Properties of Novel Hollandite-Type Molybdenum Oxide, Rb 1.5 Mo 8 O 16 journal January 2006
Effects of Atomic Layer Deposition of Al2O3 on the Li[Li0.20Mn0.54Ni0.13Co0.13]O2 Cathode for Lithium-Ion Batteries journal January 2011
Structural Defects of Silver Hollandite, Ag x Mn 8 O y , Nanorods: Dramatic Impact on Electrochemistry journal July 2015
The structure of K 1.33 Mn 8 O 16 and cation ordering in hollandite-type structures journal April 1986
Facile preparation of Cr2O3@Ag2O composite as high performance lithium storage material journal June 2014
Preparation and Electrochemistry of Silver Vanadium Phosphorous Oxide, Ag[sub 2]VO[sub 2]PO[sub 4] journal January 2009
Carbon-coated high capacity layered Li[Li0.2Mn0.54Ni0.13Co0.13]O2 cathodes journal June 2010
Effects of Cu 2+ Ions on the Structure and Reactivity of Todorokite- and Cryptomelane-Type Manganese Oxide Octahedral Molecular Sieves journal July 1999
Visible-light photocatalytic activity of Ag2O coated Bi2WO6 hierarchical microspheres assembled by nanosheets journal February 2015
In situ profiling of lithium/Ag2VP2O8 primary batteries using energy dispersive X-ray diffraction journal January 2014
Selective exchange of divalent transition metal ions in cryptomelane-type manganic acid with tunnel structure journal March 1993
Ag1.8Mn8O16: Square Planar Coordinated Ag⊕ Ions in the Channels of a Novel Hollandite Variant journal November 1984
Synthesis and Characterization of Silver Hollandite and Its Application in Emission Control journal August 2005
Manganese oxide minerals: Crystal structures and economic and environmental significance journal March 1999
Sorption Behavior of Radionuclides on Crystalline Synthetic Tunnel Manganese Oxides journal December 2000
Synthetic control of composition and crystallite size of silver ferrite composites: profound electrochemistry impacts journal January 2015
Synthetic Control of Composition and Crystallite Size of Silver Hollandite, Ag x Mn 8 O 16 : Impact on Electrochemistry journal September 2012
Electrochemistry of Hollandite α-MnO 2 : Li-Ion and Na-Ion Insertion and Li 2 O Incorporation journal June 2013
Electrochemical Behavior of Layered Solid Solution Li2MnO3−LiMO2 (M = Ni, Mn, Co) Li-Ion Cathodes with and without Alumina Coatings journal January 2011
Electrochemical reduction of Ag 2 VP 2 O 8 composite electrodes visualized via in situ energy dispersive X-ray diffraction (EDXRD): unexpected conductive additive effects journal January 2015
Understanding the Electrochemical Mechanism of K-αMnO 2 for Magnesium Battery Cathodes journal May 2014
Organophosphonic acid as precursor to prepare LiFePO4/carbon nanocomposites for high-power lithium ion batteries journal June 2015
The Electrochemistry of Silver Hollandite Nanorods, Ag x Mn 8 O 16 : Enhancement of Electrochemical Battery Performance via Dimensional and Compositional Control journal January 2013
Synthesis and Electrochemistry of Silver Hollandite journal January 2010
Microwave-Assisted Synthesis of Silver Vanadium Phosphorus Oxide, Ag 2 VO 2 PO 4 : Crystallite Size Control and Impact on Electrochemistry journal March 2016

Cited By (1)

Synthesis of Silver Hollandite Nanorectangular Cuboids as Negative Electrode Material for High-Performance Asymmetric Supercapacitors and Lithium-Ion Capacitors journal October 2018

Similar Records

Structural Defects of Silver Hollandite, AgxMn8Oy, Nanorods: Dramatic Impact on Electrochemistry
Journal Article · Thu Jul 16 00:00:00 EDT 2015 · ACS Nano · OSTI ID:1388747
+7 more
Deconvolution of Composition and Crystallite Size of Silver Hollandite Nanorods: Influence on Electrochemistry
Journal Article · Sat Dec 16 00:00:00 EST 2017 · Journal of the Electrochemical Society · OSTI ID:1388747
+7 more
Vanadium-Substituted Tunnel Structured Silver Hollandite (Ag1.2VxMn8–xO16): Impact on Morphology and Electrochemistry
Journal Article · Wed Mar 04 00:00:00 EST 2020 · Inorganic Chemistry · OSTI ID:1388747
+9 more

Related Subjects

36 MATERIALS SCIENCE
25 ENERGY STORAGE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AC impedance
composite
lithium battery
lithium-ion battery
manganese oxide
silver hollandite
silver oxide