KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| A High Energy Density Aqueous Battery Achieved by Dual Dissolution/Deposition Reactions Separated in Acid-Alkaline Electrolyte | |
| Liu, C; Chi, XW; Han, Q; Liu, Y | |
| 2020-03-01 | |
| Source Publication | ADVANCED ENERGY MATERIALS
 |
| ISSN | 1614-6832 |
| Issue | 12 |
| Subtype | Article |
| Abstract | Aqueous batteries are facing big challenges in the context of low working voltages and energy density, which are dictated by the narrow electrochemical window of aqueous electrolytes and low specific capacities of traditional intercalation-type electrodes, even though they usually represent high safety, low cost, and simple maintenance. For the first time, this work demonstrates a record high-energy-density (1503 Wh kg(-1) calculated from the cathode active material) aqueous battery system that derives from a novel electrolyte design to expand the electrochemical window of electrolyte to 3 V and two high-specific-capacity electrode reactions. An acid-alkaline dual electrolyte separated by an ion-selective membrane enables two dissolution/deposition electrode redox reactions of MnO2/Mn2+ and Zn/Zn(OH)(4)(2-) with theoretical specific capacities of 616 and 820 mAh g(-1), respectively. The newly proposed Zn-Mn2+ aqueous battery shows a high Coulombic efficiency of 98.4% and cycling stability of 97.5% of discharge capacity retention for 1500 cycles. Furthermore, in the flow battery based on Zn-Mn2+ pairs, more excellent stability of 99.5% of discharge capacity retention for 6000 cycles is achieved due to greatly improved reversibility of the Zn anode. This work provides a new path for the development of novel aqueous batteries with high voltage and energy density. |
| DOI | 10.1002/aenm.201903589 |
| WOS Keyword | MANGANESE-DIOXIDE ; CATHODE MATERIAL ; CHALLENGES ; ISSUES |
| Language | 英语 |
| WOS Research Area | Chemistry ; Energy & Fuels ; Materials Science ; Physics |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/28258 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Recommended Citation GB/T 7714 | Liu, C,Chi, XW,Han, Q,et al. A High Energy Density Aqueous Battery Achieved by Dual Dissolution/Deposition Reactions Separated in Acid-Alkaline Electrolyte[J]. ADVANCED ENERGY MATERIALS,2020(12). |
| APA | Liu, C,Chi, XW,Han, Q,&Liu, Y.(2020).A High Energy Density Aqueous Battery Achieved by Dual Dissolution/Deposition Reactions Separated in Acid-Alkaline Electrolyte.ADVANCED ENERGY MATERIALS(12). |
| MLA | Liu, C,et al."A High Energy Density Aqueous Battery Achieved by Dual Dissolution/Deposition Reactions Separated in Acid-Alkaline Electrolyte".ADVANCED ENERGY MATERIALS .12(2020). |
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