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Kim H, Kim KM, Ryu J, Ki S, Sohn D, Chae J, Chang J. Triiodide-in-Iodine Networks Stabilized by Quaternary Ammonium Cations as Accelerants for Electrode Kinetics of Iodide Oxidation in Aqueous Media. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12168-12179. [PMID: 35254047 DOI: 10.1021/acsami.1c21429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The Zn-polyiodide redox flow battery is considered to be a promising aqueous energy storage system. However, in its charging process, the electrode kinetics of I- oxidation often suffer from an intrinsically generated iodine film (I2-F) on the cathode of the battery. Therefore, it is critical to both understand and enhance the observed slow electrode kinetics of I- oxidation by an electrochemically generated I2-F. In this article, we introduced an electrogenerated N-methyl-N-ethyl pyrrolidinium iodide (MEPI)-iodine (I2) solution, designated as MEPIS, and demonstrated that the electrode kinetics of I- oxidation were dramatically enhanced compared to an I2-F under conventional electrolyte conditions, such as NaI. We showed that this result mainly contributed to the fast electro-oxidation of triiodide (I3-), which exists in the shape of a I3--in-I2 network, [I3-·(I2)n]. Raman spectroscopic and electrochemical analyses showed that the composition of electrogenerated MEPIS changed from I3- to [I3-·(I2)n] via I5- as the anodic overpotential increased. We also confirmed that I- was electrochemically oxidized on a MEPIS-modified Pt electrode with fast electrode kinetics, which is clearly contrary to the nature of an I2-F derived from a NaI solution as a kinetic barrier of I- oxidation. Through stochastic MEPIS-particle impact electrochemistry and electrochemical impedance spectroscopy, we revealed that the enhanced electrode kinetics of I- oxidation in MEPIS can be attributed to the facilitated charge transfer of I3- oxidation in [I3-·(I2)n]. In addition, we found that the degree of freedom of I3- in a quaternary ammonium-based I2-F can also be critical to determine the kinetics of the electro-oxidation of I-, which is that MEPIS showed more enhanced charge-transfer kinetics of I- oxidation compared to tetrabutylammonium I3- due to the higher degree of freedom of I3-.
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Affiliation(s)
- Hyeonmin Kim
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Kyung Mi Kim
- Department of Chemistry, Sungshin Women's University, 55, Dobong-ro 76 ga-gil, Gangbuk-gu, Seoul 142-732, Republic of Korea
| | - Jungju Ryu
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Sehyeok Ki
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Daewon Sohn
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Junghyun Chae
- Department of Chemistry, Sungshin Women's University, 55, Dobong-ro 76 ga-gil, Gangbuk-gu, Seoul 142-732, Republic of Korea
| | - Jinho Chang
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
- Department of HY-KIST Bio-convergence, Hanyang University, Seoul 04763, Republic of Korea
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Yin Y, Yuan Z, Li X. Rechargeable aqueous zinc-bromine batteries: an overview and future perspectives. Phys Chem Chem Phys 2021; 23:26070-26084. [PMID: 34787128 DOI: 10.1039/d1cp03987c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Zinc-bromine batteries (ZBBs) receive wide attention in distributed energy storage because of the advantages of high theoretical energy density and low cost. However, their large-scale application is still confronted with some obstacles. Therefore, in-depth research and advancement on the structure, electrolyte, anode, cathode and membrane are of great significance and impendency. Herein, we review the past and present investigations on ZBBs, discuss the key problems and technical challenges, and propose perspectives for the future, with the focus on materials and chemistry. This perspective would provide valuable information on further development of ZBBs.
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Affiliation(s)
- Yanbin Yin
- Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
| | - Zhizhang Yuan
- Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
| | - Xianfeng Li
- Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
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Adith RV, Naresh RP, Mariyappan K, Ulaganathan M, Ragupathy P. An optimistic approach on flow rate and supporting electrolyte for enhancing the performance characteristics of Zn-Br2 redox flow battery. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138451] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Choi Y, Park C, Kang Y, Muya JT, Jang DP, Chang J. Temporally Resolved Electrochemical Interrogation for Stochastic Collision Dynamics of Electrogenerated Single Polybromide Droplets. Anal Chem 2021; 93:8336-8344. [PMID: 34075746 DOI: 10.1021/acs.analchem.1c01366] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this article, we present electrochemical interrogation for collision dynamics of electrogenerated individual polybromide ionic liquid (PBIL) droplets through chronoamperometry combined with fast scan cyclic voltammetry (CA-FSCV). In the CA mode of CA-FSCV, a Pt ultramicroelectrode (UME) acts as the electrochemical generator for PBIL droplets by holding the oxidation potential for Br- in a given time, while FSCV is repetitively performed at a certain frequency. In the FSCV mode of CA-FSCV, a Pt UME serves as the probe to electrochemically monitor Br3- reduction for an adsorbed PBIL droplet during collision with a high temporal resolution. Based on the newly introduced CA-FSCV, we can estimate the dynamic changes in the following parameters for a short collision time: the contact radius of a PBIL droplet on a Pt UME, the concentration of Br- in the droplet, and the apparent charge transfer rate constant for electro-reduction of Br3- to Br- in the droplet, koapp. Moreover, a computational calculation using molecular dynamics is presented that can explain the change in koapp as a function of time for Br- electrolysis in a PBIL droplet. Based on the quantitative estimation of the above parameters, we suggest a more advanced mechanism for the stochastic electrochemical collision process of a PBIL droplet. These findings are important for understanding QBr2n+1/QBr half redox reactions in aqueous energy storage systems, such as Zn-Br redox flow batteries and Br-related redox enhanced electrochemical capacitors.
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Affiliation(s)
- Yejin Choi
- Department of Chemistry and Research Institute for Natural Science, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Cheonho Park
- Department of Biomedical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Yumin Kang
- Department of Biomedical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Jules Tshishimbi Muya
- Department of Chemistry and Centre of Theoretical Chemistry and Physics in Central Africa, Faculty of Sciences, University of Kinshasa, Avenue BY-PASS, 384 Kinshasa, Kinshasa 1015, DR Congo
| | - Dong Pyo Jang
- Department of Biomedical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Jinho Chang
- Department of Chemistry and Research Institute for Natural Science, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.,Department of HY-KIST Bio-convergence, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
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Hwang J, Chang J. Understanding the mass-transfer of Br species in an aqueous and quaternary ammonium polybromide biphasic system via particle-impact electrochemical analysis. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.08.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Choi Y, Hwang J, Kim KM, Jana S, Lee SU, Chae J, Chang J. Time Transient Electrochemical Monitoring of Tetraalkylammonium Polybromide Solid Particle Formation: Observation of Ionic Liquid-to-Solid Transitions. Anal Chem 2019; 91:5850-5857. [DOI: 10.1021/acs.analchem.9b00190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yejin Choi
- Department of Chemistry and Research Institute for Natural Science, Hangyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Jiseon Hwang
- Department of Chemistry and Research Institute for Natural Science, Hangyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Kyung Mi Kim
- Department of Chemistry, Sungshin Women’s University, 55, Dobong-ro 76 ga-gil, Gangbuk-gu, Seoul 142-732, Republic of Korea
| | - Saibal Jana
- Department of Bionano Technology, Department of Chemical and Molecular Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Sang Uck Lee
- Department of Bionano Technology, Department of Chemical and Molecular Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Junghyun Chae
- Department of Chemistry, Sungshin Women’s University, 55, Dobong-ro 76 ga-gil, Gangbuk-gu, Seoul 142-732, Republic of Korea
| | - Jinho Chang
- Department of Chemistry and Research Institute for Natural Science, Hangyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
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Understanding current amplification by quaternary ammonium polybromides droplets on Pt ultramicroelectrode. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.08.098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lee S, Park S, Kim KM, Chang J. Semi-quantitative determination of ion transfers at an interface between water and quaternary ammonium polybromide droplets through stochastic electrochemical analysis. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.03.162] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Kim H, Jung D, Hwang J, Chae J, Chang J. Probing the speciation of quaternary ammonium polybromides by voltammetric tribromide titration. Analyst 2018; 143:4017-4021. [DOI: 10.1039/c8an00560e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The speciation of quaternary ammonium polybromides (QBr2n+1) was quantitatively determined by voltammetric tribromide titration on a Pt ultramicroelectrode (UME).
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Affiliation(s)
- Hyeonjeong Kim
- Department of Chemistry
- Sungshin W. University
- Seoul 01133
- South Korea
| | - Dayoung Jung
- Department of Chemistry
- Sungshin W. University
- Seoul 01133
- South Korea
| | - Jiseon Hwang
- Department of Chemistry and Research Institute for Convergence of Basic Sciences
- Hanyang University
- Seoul 04763
- South Korea
| | - Junghyun Chae
- Department of Chemistry
- Sungshin W. University
- Seoul 01133
- South Korea
| | - Jinho Chang
- Department of Chemistry and Research Institute for Convergence of Basic Sciences
- Hanyang University
- Seoul 04763
- South Korea
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