Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Material Failure Mechanisms of Alkaline Zn Rechargeable Conversion Electrodes

Journal Article · · ACS Applied Energy Materials
Zinc (Zn) alkaline electrodes hold great importance and promise in the battery technology community, yet their behavior in real-world applications is still poorly understood. Here, we report a study of failure mechanisms and material evolution during cycling of 27 zinc–manganese dioxide (Zn–MnO2) cells wherein the percent utilization of the Zn electroactive material is systematically varied between 1 and 16%. Cell fabrication is kept typical of the prevailing industrial cell design. The cycle life ranges from 2800 to 60, depending inversely on the Zn utilization. In all cases, the Zn material microstructure sheds the polytetrafluoroethylene (PTFE) binder and forms zinc oxide (ZnO) rods, with longer rods formed by lower current per Zn mass. Irreversible side reactions such as the hydrogen evolution reaction (HER), short circuits, or gas crossover cause the Zn anode’s charging efficiency to average 92% (as low as 86%), which in turn causes the baseload of metallic Zn to gradually disappear. Cell failure occurs after the baseload of metallic Zn is exhausted. The total lifetime discharge capacity remains constant near 12 ± 5 Ah/g Zn invariant of Zn utilization, which suggests that the aforementioned processes of Zn microstructural evolution and side-reaction destruction of baseload metallic zinc both progress linearly with cell capacity throughput. Manual reproduction of individual Zn failure mechanisms is performed in 22 fresh cells. Tight packing of the microstructure can lead to poor mass transfer, which causes supersaturation of soluble Zn and finally produces a high overvoltage during discharge. Here, the low charging current density yields poor coulombic efficiency due either to the competitive HER or soft short circuits.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Electricity (OE)
Grant/Contract Number:
NA0003525
OSTI ID:
1847079
Journal Information:
ACS Applied Energy Materials, Journal Name: ACS Applied Energy Materials Journal Issue: 4 Vol. 4; ISSN 2574-0962
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (56)

Development of long-lived high-performance zinc-calcium/nickel oxide cells journal November 1992
The rechargeability of manganese dioxide in alkaline electrolyte journal October 1981
Passivation of zinc in concentrated alkaline solution—II. Role of various experimental factors and the distinction between the solid-state and dissolution—precipitation mechanisms journal September 1985
Long life sealed nickel-zinc cell using a new separator journal January 1983
A study of calcium zincate as negative electrode materials for secondary batteries journal December 2001
Preparation and electrochemical performance of In-doped ZnO as anode material for Ni–Zn secondary cells journal April 2011
Accessing the second electron capacity of MnO2 by exploring complexation and intercalation reactions in energy dense alkaline batteries journal April 2018
Translating Materials-Level Performance into Device-Relevant Metrics for Zinc-Based Batteries journal December 2018
Development and testing of an economic grid-scale flow-assisted zinc/nickel-hydroxide alkaline battery journal October 2014
Rechargeability and economic aspects of alkaline zinc–manganese dioxide cells for electrical storage and load leveling journal February 2015
Operando identification of the point of [Mn2]O4 spinel formation during γ-MnO2 discharge within batteries journal July 2016
Effects of barium on the performance of secondary alkaline zinc electrode journal March 2004
Rapid electrochemical synthesis of δ-MnO2 from γ-MnO2 and unleashing its performance as an energy dense electrode journal December 2017
Effects of lanthanum and neodymium hydroxides on secondary alkaline zinc electrode journal November 1997
Rechargeable Zinc Alkaline Anodes for Long-Cycle Energy Storage journal May 2017
Photocorrosion of ZnO Single Crystals during Electrochemical Water Splitting journal November 2020
Breaking the 2 V Barrier in Aqueous Zinc Chemistry: Creating 2.45 and 2.8 V MnO 2 –Zn Aqueous Batteries journal August 2019
Electrochemical Energy Storage for Green Grid journal May 2011
A Study of Alkaline Solutions of Zinc Oxide journal December 1954
Regenerable Cu-intercalated MnO2 layered cathode for highly cyclable energy dense batteries journal March 2017
Wiring zinc in three dimensions re-writes battery performance—dendrite-free cycling journal January 2014
Real-time materials evolution visualized within intact cycling alkaline batteries journal January 2014
Superior cycling stability and high rate capability of three-dimensional Zn/Cu foam electrodes for zinc-based alkaline batteries journal January 2015
A Zn–NiO rechargeable battery with long lifespan and high energy density journal January 2015
A conversion-based highly energy dense Cu 2+ intercalated Bi-birnessite/Zn alkaline battery journal January 2017
Vibrational Spectra of Solutions of Zinc Oxide in Potassium Hydroxide journal August 1965
NMR Study of Complex Ions in the Aqueous ZnO–KOH System journal October 1965
Zinc Electrode Cycle-Life Performance in Alkaline Electrolytes Having Reduced zinc Species Solubility journal November 1985
Electrical Energy Storage for the Grid: A Battery of Choices journal November 2011
Rechargeable nickel–3D zinc batteries: An energy-dense, safer alternative to lithium-ion journal April 2017
Morphology and Spatial Distribution of ZnO Formed in Discharged Alkaline Zn/MnO[sub 2] AA Cells journal January 2003
Zinc Electrode Shape Change journal January 1991
The Secondary Alkaline Zinc Electrode journal January 1991
Pasted‐Rolled Zinc Electrodes Containing Calcium Hydroxide for Use in Zn / NiOOH Cells journal September 1987
Effects of  KOH  Concentration on the Shape Change and Cycle Life of Zn / NiOOH Cells journal October 1986
Accelerated Testing of Additives in Zinc Plates of Nickel Zinc Cells journal December 1983
The Behavior of the Zinc Electrode in Alkaline Solutions: V . Supersaturated Zincate Solutions journal July 1981
Observations of an Operating Zinc‐Pore Electrode journal November 1979
The Zn ‐  KOH  System: The Solution‐Precipitation Path for Anodic ZnO Formation journal November 1979
The Behavior of the Zinc Electrode in Alkaline Solutions: III . The Equilibrium Potential journal September 1979
Engineering Analysis of Shape Change in Zinc Secondary Electrodes journal January 1976
Supersaturated Zincate Solutions journal January 1975
Zinc Electrode Shape Change in Secondary Cells journal January 1972
The Mechanism of the Zinc(II)-Zinc Amalgam Electrode Reaction in Alkaline Media As Studied by Chronocoulometric and Voltammetric Techniques journal January 1972
On the Deposition and Dissolution of Zinc in Alkaline Solutions journal January 1972
Exchange in the Zn, Zincate, ZnO System journal January 1971
Film Formation and Hydrogen Evolution on the Alkaline Zinc Electrode journal January 1971
The Anodic Behavior of Zinc in KOH Solutions journal January 1968
Anodic Films on Zinc and the Formation of Cobwebs journal January 1969
The Anodic Dissolution and Passivation of Zinc in Concentrated Potassium Hydroxide Solutions journal January 1969
Electrolytic Oxidation of Zinc in Alkaline Solutions journal January 1955
The Nature of the Zinc-Containing Ion in Strongly Alkaline Solutions journal January 1954
A Lateral Microfluidic Cell for Imaging Electrodeposited Zinc near the Shorting Condition journal January 2010
An Operando Study of the Initial Discharge of Bi and Bi/Cu Modified MnO 2 journal January 2018
An In Situ Synchrotron Study of Zinc Anode Planarization by a Bismuth Additive journal December 2013
Hetaerolite Profiles in Alkaline Batteries Measured by High Energy EDXRD journal November 2014