Activating the I-0/I+ redox couple in an aqueous I-2-Zn battery to achieve a high voltage plateau
文献类型：期刊论文
| 作者 | Li, Xinliang; Li, Mian; Huang, Zhaodong; Liang, Guojin; Chen, Ze; Yang, Qi; Huang, Qing; Zhi, Chunyi |
| 刊名 | ENERGY & ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 14期号:1页码:407-413 |
| 关键词 | RAMAN-SPECTRA INTERCALATION CAPACITANCE STABILITY CHEMISTRY MXENE |
| 英文摘要 | Rechargeable iodine conversion batteries possess promising prospects for portable energy storage with complete electron transfer and rich valence supply. However, the reaction is limited to the single I-/I-0 redox at a potential of only 0.54 V vs. the standard hydrogen electrode (SHE), leading to a low voltage plateau at 1.30 V when Zn is employed as the anode. Herein, we show how to activate the desired reversible I-0/I+ redox behavior at a potential of 0.99 V vs. SHE by electrolyte tailoring via F- and Cl- ion-containing salts. The electronegative F- and Cl- ions can stabilize the I+ during charging. In an aqueous Zn ion battery based on an optimized ZnCl2 + KCl electrolyte with abundant Cl-, the I-terminated halogenated Ti3C2I2 MXene cathode delivered two well-defined discharge plateaus at 1.65 V and 1.30 V, superior to all reported aqueous I-2-metal (Zn, Fe, Cu) counterparts. Together with the 108% capacity enhancement, the high voltage output resulted in a significant 231% energy density enhancement. Metallic Ti3C2I2 benefits the redox kinetics and confines the interior I species, leading to exceptional cyclic durability and rate capability. In situ Raman and ex situ multiple spectral characterizations clarify the efficient activation and stabilization effects of Cl- (F-) ions on reversible I-0/I+ redox. Our work is believed to provide new insight into designing advanced I-2-metal batteries based on the newly discovered I-/I-0/I+ chemistry to achieve both high voltage and enhanced capacity. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22324]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Zhi, CY (corresponding author), City Univ Hong Kong, Ctr Funct Photon, Kowloon, Hong Kong 999077, Peoples R China. 2.Li, M (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Zhejiang, Peoples R China. 3.Zhi, CY (corresponding author), City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China. 4.Zhi, CY (corresponding author), City Univ Hong Kong, Ctr Adv Nucl Safety & Sustainable Dev, Kowloon, Hong Kong 999077, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, Xinliang,Li, Mian,Huang, Zhaodong,et al. Activating the I-0/I+ redox couple in an aqueous I-2-Zn battery to achieve a high voltage plateau[J]. ENERGY & ENVIRONMENTAL SCIENCE,2021,14(1):407-413. |
| APA | Li, Xinliang.,Li, Mian.,Huang, Zhaodong.,Liang, Guojin.,Chen, Ze.,...&Zhi, Chunyi.(2021).Activating the I-0/I+ redox couple in an aqueous I-2-Zn battery to achieve a high voltage plateau.ENERGY & ENVIRONMENTAL SCIENCE,14(1),407-413. |
| MLA | Li, Xinliang,et al."Activating the I-0/I+ redox couple in an aqueous I-2-Zn battery to achieve a high voltage plateau".ENERGY & ENVIRONMENTAL SCIENCE 14.1(2021):407-413. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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