Investigating Galvanostatic Intermittent Titration Responses in Aqueous Rechargeable Zn/MnO2 Batteries

被引：0
|
作者：
Bernard, John C. [1 ]
Wang, Zhongling [2 ,3 ]
Hill, Ryan C. [3 ]
Takeuchi, Esther S. [2 ,3 ,4 ,5 ]
Marschilok, Amy C. [2 ,3 ,4 ,5 ]
Yan, Shan [3 ,4 ]
Takeuchi, Kenneth J. [2 ,3 ,4 ,5 ]
West, Alan C. [1 ,6 ]
机构：
[1] Columbia Univ, Dept Chem Engn, New York, NY 10027 USA
[2] SUNY Stony Brook, Dept Mat Sci & Chem Engn, Stony Brook, NY 11794 USA
[3] SUNY Stony Brook, Inst Energy Sustainabil Environm & Equ I SEE, Stony Brook, NY 11794 USA
[4] Brookhaven Natl Lab, Interdisciplinary Sci Dept, Upton, NY 11973 USA
[5] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
[6] Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2025年 / 172卷 / 03期
关键词：
batteries; -; aqueous; electroanalytical electrochemistry; electrode kinetics; energy storage; theory and modelling; thermodynamics; ZINC-ION; MANGANESE-DIOXIDE; ENERGY; MECHANISM; STORAGE; CATHODE; POWER; CHALLENGES; ALPHA-MNO2; CHEMISTRY;
D O I：
10.1149/1945-7111/adbc25
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The galvanostatic intermittent titration technique (GITT) was employed to investigate the electrochemical mechanisms governing aqueous rechargeable Zn/alpha-MnO2 batteries. Such batteries hold promise as a grid-scale energy storage solution. Focusing on the role of pH dynamics, the work differentiates "fast" (kinetic) and "slow" (transport-based) processes during charge and discharge cycles. Results highlight the significance of moderating pH changes via zinc hydroxy sulfate precipitation and solvation effects in controlling cell potential and reaction kinetics. By clarifying reaction mechanisms and pH dependencies, the study provides a pathway for advancing the design and efficiency of aqueous Zn/alpha-MnO2 batteries, paving the way for more reliable, scalable, and sustainable energy storage solutions.
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页数：11
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