Chen, Zhuo;
Feng, Junrun;
Yao, Pengfei;
Cai, Jinlong;
Zhou, Weihua;
Lu, Jun;
Zhang, Lun;
... Hao, Zhangxiang; + view all
(2024)
Construction of iodine-rich solid electrolyte interphase to achieve highly stable aqueous zinc-ion batteries.
Electrochimica Acta
, 508
, Article 145291. 10.1016/j.electacta.2024.145291.
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Abstract
Aqueous zinc ion batteries (AZIBs) are considered highly potential secondary energy storage equipment for their higher energy density, lower risk, and affordability. However, parasitic reactions within the anode affect the Zn²⁺ deposition behavior with uncontrollable dendrite formation significantly shortening the battery lifetime. For improvement of the Zn anode cycling stability, tetraethylammonium iodide (TEAI), a multifunctional additive was introduced into ZnSO4, which constructs an iodine-rich solid electrolyte interphase (SEI) on the zinc anode surface and significantly inhibits the parasitic reactions and nucleation of zinc dendrites. Furthermore, the TEAI also reshapes the solvation sheath of Zn²⁺, contributing to better transportation kinetics of zinc ions. Attributing to these functions, highly stable AZIBs are realized with the addition of TEAI, in which a stable cycling life of over 3500 h was achieved for symmetric Zn//Zn batteries under 1 mA cm⁻². With higher current densities, the battery also exhibited excellent cycling stability over 3500 h. Full cells with the V₂O₅ cathode were fabricated to examine the commercial availability of TEAI additives, achieving a high reversible discharge capacity of 381 mAh g⁻¹, and the capacity of 102 mAh g⁻¹ was still maintained after 800 cycles at 1 A g⁻¹.
| Type: | Article |
|---|---|
| Title: | Construction of iodine-rich solid electrolyte interphase to achieve highly stable aqueous zinc-ion batteries |
| DOI: | 10.1016/j.electacta.2024.145291 |
| Publisher version: | http://dx.doi.org/10.1016/j.electacta.2024.145291 |
| Language: | English |
| Additional information: | This version is the author-accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Aqueous zinc-ion batteries, Electrolyte additive, Tetraethylammonium iodide, Solid electrolyte interphase, Zinc dendrite, Solvation sheath |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10200653 |
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