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

Mechanistic Investigation of Redox Processes in Zn-MnO2 battery in Mild Aqueous Electrolytes

Journal Article · · Journal of Materials Chemistry A
DOI:https://doi.org/10.1039/D1TA05022B· OSTI ID:1827318

Zinc-MnO2 based batteries have acquired attention for grid-level applications, due to impressive theoretical performance, cost effectiveness and intrinsic safety. However, there are still many challenges that remain elusive due to the complex and controversial mechanisms of operation that hinders commercialization. In this work, the detailed redox processes that occur at the cathode during Zn-MnO2 battery operation are elucidated. Using a blend of structural and electrochemical techniques, the redox pairs that occur during operation are mechanistically studied while also showcasing the true impact of the electrolyte additive (0.1 M MnSO4) in a 1 M ZnSO4 electrolyte. An electrochemical quartz-crystal microbalance (EQCM) has been leveraged to reveal the effect of zinc hydroxy sulfate salt (Zn4SO4(OH)6·nH2O) and zinc manganese oxide (ZnxMnyOz) dissolution/deposition, which are believed to be major components during discharge and charge conditions. . These results provide insight not currently available, allowing a holistic view of the electrochemical reaction mechanisms during battery operation.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1827318
Report Number(s):
PNNL-SA-163119
Journal Information:
Journal of Materials Chemistry A, Vol. 9, Issue 36
Country of Publication:
United States
Language:
English

References (39)

Addressing the terawatt challenge: scalability in the supply of chemical elements for renewable energy journal January 2012
A Perspective: the Technical Barriers of Zn Metal Batteries journal January 2020
Zinc-ion batteries: Materials, mechanisms, and applications journal January 2019
Batteries: Recent Advances in Flexible Zinc-Based Rechargeable Batteries (Adv. Energy Mater. 1/2019) journal January 2019
Recent Advances in Aqueous Zinc-Ion Batteries journal September 2018
Recent Progress on Zinc-Ion Rechargeable Batteries journal October 2019
Rechargeable Zn∣ZnSO4∣MnO2-type cells journal July 1986
Improvement of high-rate capability of alkaline Zn–MnO2 battery journal October 2002
Energetic Zinc Ion Chemistry: The Rechargeable Zinc Ion Battery journal December 2011
Elucidating the intercalation mechanism of zinc ions into α-MnO 2 for rechargeable zinc batteries journal January 2015
Electrodeposited Zinc-Based Films as Anodes for Aqueous Zinc Batteries journal August 2020
Investigation of the intercalation of polyvalent cations (Mg2+, Zn2+) into λ-MnO2 for rechargeable aqueous battery journal January 2014
Morphology-Dependent Electrochemical Performance of Zinc Hexacyanoferrate Cathode for Zinc-Ion Battery journal December 2015
A high-capacity and long-life aqueous rechargeable zinc battery using a metal oxide intercalation cathode journal August 2016
Freestanding graphene/VO2 composite films for highly stable aqueous Zn-ion batteries with superior rate performance journal February 2019
Reversible aqueous zinc/manganese oxide energy storage from conversion reactions journal April 2016
High-capacity aqueous zinc batteries using sustainable quinone electrodes journal March 2018
An Aqueous Rechargeable Zn//Co 3 O 4 Battery with High Energy Density and Good Cycling Behavior journal April 2016
Rechargeable Aqueous Zn–V 2 O 5 Battery with High Energy Density and Long Cycle Life journal May 2018
High Performance Zn/LiFePO4 Aqueous Rechargeable Battery for Large Scale Applications journal January 2015
Sodium Ion Stabilized Vanadium Oxide Nanowire Cathode for High-Performance Zinc-Ion Batteries journal January 2018
Towards High-Voltage Aqueous Metal-Ion Batteries Beyond 1.5 V: The Zinc/Zinc Hexacyanoferrate System journal September 2014
An Environmentally Friendly and Flexible Aqueous Zinc Battery Using an Organic Cathode journal August 2018
Aqueous zinc-organic polymer battery with a high rate performance and long lifetime journal July 2016
An Aqueous Rechargeable Zinc-Organic Battery with Hybrid Mechanism journal September 2018
Manganese oxide-based materials as electrochemical supercapacitor electrodes journal January 2011
Electrolytic manganese dioxide (EMD): a perspective on worldwide production, reserves and its role in electrochemistry journal January 2015
Zn/MnO 2 Battery Chemistry With H + and Zn 2+ Coinsertion journal July 2017
Functioning Mechanism of the Secondary Aqueous Zn-β-MnO 2 Battery journal February 2020
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Prediction of solid-aqueous equilibria: Scheme to combine first-principles calculations of solids with experimental aqueous states journal June 2012
Electrochemical Stability of Metastable Materials journal November 2017
Rechargeability of aqueous sulfate Zn/MnO2 batteries enhanced by accessible Mn2+ ions journal November 2018
Quantitative temporally and spatially resolved X-ray fluorescence microprobe characterization of the manganese dissolution-deposition mechanism in aqueous Zn/α-MnO 2 batteries journal January 2020
Controlled synthesis of MnO2 nanoparticles for aqueous battery cathodes: polymorphism–capacity correlation journal March 2017
Critical Role of pH Evolution of Electrolyte in the Reaction Mechanism for Rechargeable Zinc Batteries journal September 2016
Reaction Mechanisms for Long-Life Rechargeable Zn/MnO 2 Batteries journal June 2018
Crystal water for high performance layered manganese oxide cathodes in aqueous rechargeable zinc batteries journal January 2019
Electrochemical Behavior of Electrolytic Manganese Dioxide in Aqueous KOH and LiOH Solutions: A Comparative Study journal December 2015