Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation
While aqueous Zn-Na hybrid batteries have garnered widespread attention because of their low cost and high safety, it is still challenging to achieve long cycle-life and stable discharge-voltage due to sluggish reaction kinetics, zinc dendrite formation, and side reactions. Herein, we design a Zn2+/...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Sprog: | English |
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2022
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| Online adgang: | https://hdl.handle.net/10356/154784 |
| _version_ | 1826127000249565184 |
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| author | Wang, Chunli Sun, Lianshan Li, Maoxin Zhou, Lin Cheng, Yong Ao, Xin Zhang, Xiuyun Wang, Limin Tian, Bingbing Fan, Hong Jin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wang, Chunli Sun, Lianshan Li, Maoxin Zhou, Lin Cheng, Yong Ao, Xin Zhang, Xiuyun Wang, Limin Tian, Bingbing Fan, Hong Jin |
| author_sort | Wang, Chunli |
| collection | NTU |
| description | While aqueous Zn-Na hybrid batteries have garnered widespread attention because of their low cost and high safety, it is still challenging to achieve long cycle-life and stable discharge-voltage due to sluggish reaction kinetics, zinc dendrite formation, and side reactions. Herein, we design a Zn2+/Na+ dual-salt battery, in which sodiation of the NVP cathode favors zinc intercalation under an energy threshold, leading to decoupled redox reactions on the cathode and anode. Systematic investigations of the electrolyte effects show that the ion intercalation mechanism and the kinetics in the mixture of triflate- and acetate-based electrolytes are superior to those in the common acetate-only electrolytes. As a result, we have achieved fast discharging capability, suppressed zinc dendrites, a stable discharge voltage at 1.45 V with small polarization, and nearly 100% Columbic efficiency in the dual-salt mixture electrolyte with optimized concentration of 1 M Zn(OAc)2 + 1 M NaCF3SO3. This work demonstrates the importance of electrolyte regulation in aqueous dual-salt hybrid batteries for the energy storage. |
| first_indexed | 2024-10-01T07:01:37Z |
| format | Journal Article |
| id | ntu-10356/154784 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:01:37Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1547842023-02-28T19:43:49Z Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation Wang, Chunli Sun, Lianshan Li, Maoxin Zhou, Lin Cheng, Yong Ao, Xin Zhang, Xiuyun Wang, Limin Tian, Bingbing Fan, Hong Jin School of Physical and Mathematical Sciences Engineering::Materials::Energy materials Dual-Salt Battery High Voltage While aqueous Zn-Na hybrid batteries have garnered widespread attention because of their low cost and high safety, it is still challenging to achieve long cycle-life and stable discharge-voltage due to sluggish reaction kinetics, zinc dendrite formation, and side reactions. Herein, we design a Zn2+/Na+ dual-salt battery, in which sodiation of the NVP cathode favors zinc intercalation under an energy threshold, leading to decoupled redox reactions on the cathode and anode. Systematic investigations of the electrolyte effects show that the ion intercalation mechanism and the kinetics in the mixture of triflate- and acetate-based electrolytes are superior to those in the common acetate-only electrolytes. As a result, we have achieved fast discharging capability, suppressed zinc dendrites, a stable discharge voltage at 1.45 V with small polarization, and nearly 100% Columbic efficiency in the dual-salt mixture electrolyte with optimized concentration of 1 M Zn(OAc)2 + 1 M NaCF3SO3. This work demonstrates the importance of electrolyte regulation in aqueous dual-salt hybrid batteries for the energy storage. Ministry of Education (MOE) Accepted version H. J. Fan acknowledges the support from MOE Tier 1 grant (RG 157/19), and from the China-Singapore International Joint Research Institute (204-A018002). 2022-01-10T06:30:45Z 2022-01-10T06:30:45Z 2021 Journal Article Wang, C., Sun, L., Li, M., Zhou, L., Cheng, Y., Ao, X., Zhang, X., Wang, L., Tian, B. & Fan, H. J. (2021). Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation. Science China Chemistry. https://dx.doi.org/10.1007/s11426-021-1162-3 1674-7291 https://hdl.handle.net/10356/154784 10.1007/s11426-021-1162-3 2-s2.0-85119951230 en RG 157/19 204-A018002 Science China Chemistry © 2021 Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature. All rights reserved. This paper was published in Science China Chemistry and is made available with permission of Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature. application/pdf |
| spellingShingle | Engineering::Materials::Energy materials Dual-Salt Battery High Voltage Wang, Chunli Sun, Lianshan Li, Maoxin Zhou, Lin Cheng, Yong Ao, Xin Zhang, Xiuyun Wang, Limin Tian, Bingbing Fan, Hong Jin Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| title | Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| title_full | Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| title_fullStr | Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| title_full_unstemmed | Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| title_short | Aqueous Zn²⁺/Na⁺ dual-salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| title_sort | aqueous zn²⁺ na⁺ dual salt batteries with stable discharge voltage and high columbic efficiency by systematic electrolyte regulation |
| topic | Engineering::Materials::Energy materials Dual-Salt Battery High Voltage |
| url | https://hdl.handle.net/10356/154784 |
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