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Electroactive ZnO: Mechanisms, Conductivity, and Advances in Zn Alkaline Battery Cycling

Journal Article · · Advanced Energy Materials

Zinc oxide is of great interest for advanced energy devices because of its low cost, wide direct bandgap, non-toxicity, and facile electrochemistry. In zinc alkaline batteries, ZnO plays a critical role in electrode passivation, a process that hinders commercialization and remains poorly understood. Here, novel observations of an electroactive type of ZnO formed in Zn-metal alkaline electrodes are disclosed. The electrical conductivity of battery-formed ZnO is measured and found to vary by factors of up to 104, which provides a first-principles-based understanding of Zn passivation in industrial alkaline batteries. Simultaneous with this conductivity change, protons are inserted into the crystal structure and electrons are inserted into the conduction band in quantities up to ≈1020 cm–3 and ≈1 mAh gZnO–1. Electron insertion causes blue electrochromic coloration with efficiencies and rates competitive with leading electrochromic materials. The electroactivity of ZnO is evidently enabled by rapid crystal growth, which forms defects that complex with inserted cations, charge-balanced by the increase of conduction band electrons. Furthermore, this property distinguishes electroactive ZnO from inactive classical ZnO. Knowledge of this phenomenon is applied to improve cycling performance of industrial-design electrodes at 50% zinc utilization and the authors propose other uses for ZnO such as electrochromic devices.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Electricity (OE); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
NA0003525; SC0012704
OSTI ID:
1855819
Alternate ID(s):
OSTI ID: 1846221
OSTI ID: 1890430
Report Number(s):
SAND2022-3146J; BNL-223523-2022-JAAM; 704218
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 15 Vol. 12; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (68)

Electrochromic Metal Oxides: Recent Progress and Prospect journal June 2018
Going beyond Intercalation Capacity of Aqueous Batteries by Exploiting Conversion Reactions of Mn and Zn electrodes for Energy‐Dense Applications journal November 2019
Intrinsic performance limits in transparent conducting oxides journal January 1992
Oxygen Deficiency and Hydrogen Turn ZnO Red journal February 2010
Conduction mechanism of highly conductive and transparent zinc oxide thin films prepared by magnetron sputtering journal February 1992
Phonon-plasmon decoupling: Bound exciton resonant Raman effect in CdS journal June 1971
Scattering of charge carriers in transparent and conducting thin oxide films with a non-parabolic conduction band journal July 1989
The mechanism of capacity fade of rechargeable alkaline manganese dioxide zinc cells journal April 2000
Resistive switching in transition metal oxides journal June 2008
Surface defects control for ZnO nanorods synthesized by quenching and their anti-recombination in photocatalysis journal March 2015
Identification of intrinsic hydrogen impurities in ZnO with 1H solid-state nuclear magnetic resonance spectroscopy journal May 2015
Electrochemical characterization and mathematical modeling of zinc passivation in alkaline solutions: A review journal May 2017
Preparation of electrically conductive nano-powder of zinc oxide and application to transparent film coating journal July 2009
Improved discharge capacity and suppressed surface passivation of zinc anode in dilute alkaline solution using surfactant additives journal March 2004
Rechargeability and economic aspects of alkaline zinc–manganese dioxide cells for electrical storage and load leveling journal February 2015
Effect of oxygen content on the structural and optical properties of ZnO films grown by atmospheric pressure MOCVD journal February 2013
Revealing Defects in Crystalline Lithium-Ion Battery Electrodes by Solid-State NMR: Applications to LiVPO 4 F journal July 2015
Rechargeable Zinc Alkaline Anodes for Long-Cycle Energy Storage journal May 2017
Hydrogen Impurities in ZnO: Shallow Donors in ZnO Semiconductors and Active Sites for Hydrogenation of Carbon Species journal March 2020
Theoretical Insights into Proton-Coupled Electron Transfer from a Photoreduced ZnO Nanocrystal to an Organic Radical journal August 2017
Material Failure Mechanisms of Alkaline Zn Rechargeable Conversion Electrodes journal April 2021
Controlling Carrier Densities in Photochemically Reduced Colloidal ZnO Nanocrystals: Size Dependence and Role of the Hole Quencher journal October 2013
Proton-Controlled Reduction of ZnO Nanocrystals: Effects of Molecular Reductants, Cations, and Thermodynamic Limitations journal January 2016
Cation Effects on the Reduction of Colloidal ZnO Nanocrystals journal June 2018
The Role of Ionic Liquid Breakdown in the Electrochemical Metallization of VO 2 : An NMR Study of Gating Mechanisms and VO 2 Reduction journal November 2018
Charge-Tunable Quantum Plasmons in Colloidal Semiconductor Nanocrystals journal December 2013
Electric-field control of tri-state phase transformation with a selective dual-ion switch journal May 2017
Hydrogen multicentre bonds journal December 2006
Highly reversible zinc metal anode for aqueous batteries journal April 2018
Solar hydrogen production with semiconductor metal oxides: new directions in experiment and theory journal January 2012
Effect of alkali metal hydroxide on formation processes of zinc oxide crystallites from aqueous solutions containing Zn(OH)42? ions journal January 2004
Interaction of hydrogen with defects in ZnO nanoparticles – studied by positron annihilation, Raman and photoluminescence spectroscopy journal January 2014
Correlation between photoluminescence and oxygen vacancies in ZnO phosphors journal January 1996
Optically pumped lasing of ZnO at room temperature journal April 1997
Low-temperature growth and properties of ZnO nanowires journal June 2004
Production and recovery of defects in phosphorus-implanted ZnO journal January 2005
Oxygen vacancies in ZnO journal September 2005
Production of native donors in ZnO by annealing at high temperature in Zn vapor journal October 2005
Carrier concentration dependence of band gap shift in n-type ZnO:Al films journal April 2007
Raman study of the influence of hydrogen on defects in ZnO journal June 2007
Proton dynamics in ZnO nanorods quantified by in situ solid-state H1 nuclear magnetic resonance spectroscopy journal October 2007
Mechanisms behind green photoluminescence in ZnO phosphor powders journal May 1996
Fundamental limits on optical transparency of transparent conducting oxides: Free-carrier absorption in SnO 2 journal January 2012
On the optical band gap of zinc oxide journal May 1998
Zinc self-diffusion, electrical properties, and defect structure of undoped, single crystal zinc oxide journal January 2000
Resistivity of polycrystalline zinc oxide films: current status and physical limit journal October 2001
Fundamentals of zinc oxide as a semiconductor journal October 2009
Synthesis and photoluminescence studies on ZnO nanowires journal January 2004
The Electrical Conductivity of Zinc Oxide journal December 1941
Anomalous Optical Absorption Limit in InSb journal February 1954
Phonon- and charged-impurity-assisted indirect free-carrier absorption in Ga 2 O 3 journal August 2019
Free-carrier absorption in transparent conducting oxides: Phonon and impurity scattering in SnO 2 journal December 2015
Multiple-Phonon-Resonance Raman Effect in CdS journal April 1969
Nature of Native Defects in ZnO journal August 2007
Interband and Intraband Absorption Coefficients of Silicon: Theoretical Frameworks and Formulations journal March 2020
Titanium and Zinc Oxide Nanoparticles Are Proton-Coupled Electron Transfer Agents journal June 2012
Rechargeable nickel–3D zinc batteries: An energy-dense, safer alternative to lithium-ion journal April 2017
In Situ Raman Spectroscopy of Zinc Electrodes in Alkaline Solutions journal January 2003
Morphology and Spatial Distribution of ZnO Formed in Discharged Alkaline Zn/MnO[sub 2] AA Cells journal January 2003
The Secondary Alkaline Zinc Electrode journal January 1991
The Dissolution and Passivation of Zinc in Concentrated Aqueous Hydroxide journal January 1981
The Anodic Behavior of Zinc Electrodes in Potassium Hydroxide Electrolytes journal January 1970
Film Formation and Hydrogen Evolution on the Alkaline Zinc Electrode journal January 1971
The Anodic Dissolution and Passivation of Zinc in Concentrated Potassium Hydroxide Solutions journal January 1969
Understanding the Dynamics of Primary Zn-MnO 2 Alkaline Battery Gassing with Operando Visualization and Pressure Cells journal January 2018
Coupling Phenomena between Zinc Surface Morphological Variations and Ionic Mass Transfer Rate in Alkaline Solution journal December 2012
Utilization of Hyper-Dendritic Zinc during High Rate Discharge in Alkaline Electrolytes journal January 2016
Carrier-induced absorption as a mechanism for electrochromism in tungsten trioxide journal June 2018

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