Reconstructing Vanadium Oxide with Anisotropic Pathways for a Durable and Fast Aqueous K-Ion Battery
文献类型：期刊论文
| 作者 | Liang, Guojin1; Gan, Zhongdong2; Wang, Xiaoqi3; Jin, Xu3; Xiong, Bo3; Zhang, Xiankun4; Chen, Shimou5; Wang, Yanlei5; He, Hongyan5; Zhi, Chunyi1,6 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2021-11-23 |
| 卷号 | 15期号:11页码:17717-17728 |
| 关键词 | aqueous K-ion battery reconstructed vanadium oxide anisotropic pathways durable and fast K-ion storage water-in-salt electrolyte |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.1c05678 |
| 英文摘要 | Aqueous potassium-ion batteries are long-term pursued, due to their excellent performance and intrinsic superiority in safe, low-cost storage for portable and grid-scale applications. However, the notorious issues of K-ion battery chemistry are the inferior cycling stability and poor rate performance, due to the inevitably destabilization of the crystal structure caused by K-ions with pronouncedly large ionic radius. Here, we resolve such issues by reconstructing commercial vanadium oxide (alpha-V2O5) into the bronze form, i.e., delta-K0.5V2O5 (KVO) nanobelts, as cathode materials with layered structure of enlarged space and anisotropic pathways for K-ion storage. Specifically, it can deliver a high capacity as 116 mAh g(-1) at the 1 C-rate, an outstanding rate capacity of 65 mAh g(-1) at 50 C, and a robust cyclic stability with 88.2% capacity retention after 1,000 cycles at 1 C. When coupled with organic anode in a full-cell configuration, the KVO electrodes can output 95 mAh g(-1) at 1 C and cyclic stability with 77.3% capacity retention after 20,000 cycles at 10 C. According to experimental and calculational results, the ultradurable cyclic performance is assigned to the robust structural reversibility of the KVO electrode, and the ultrahigh-rate capability is attributed to the anisotropic pathways with improved electrical conductivity in KVO nanobelts. In addition, applying a 22 M KCF3SO3 water-in-salt electrolyte can impede the dissolving issues of the KVO electrode and further stabilize the battery cyclic performance. Lastly, the as-designed AKIBs can operate with superior low-temperature adaptivity even at -30 degrees C. Overall, the KVO electrode can serve as a paradigm toward developing more suitable electrode materials for high-performance AKIBs. |
| WOS关键词 | INTERCALATION ; ELECTRODES ; CHEMISTRY ; MAGNESIUM ; INSERTION ; SODIUM ; WATER ; MG2+ ; LIFE |
| 资助项目 | GRF[CityU11212920] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000747115200052 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | GRF |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/52031]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wang, Yanlei; He, Hongyan; Zhi, Chunyi |
| 作者单位 | 1.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China 2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 3.PetroChina Res Ctr New Energy, Res Inst Petr Explorat & Dev RIPED, Beijing 100083, Peoples R China 4.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China 5.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 6.City Univ Hong Kong, Ctr Adv Nucl Safety & Sustainable Dev, Hong Kong 999077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Guojin,Gan, Zhongdong,Wang, Xiaoqi,et al. Reconstructing Vanadium Oxide with Anisotropic Pathways for a Durable and Fast Aqueous K-Ion Battery[J]. ACS NANO,2021,15(11):17717-17728. |
| APA | Liang, Guojin.,Gan, Zhongdong.,Wang, Xiaoqi.,Jin, Xu.,Xiong, Bo.,...&Zhi, Chunyi.(2021).Reconstructing Vanadium Oxide with Anisotropic Pathways for a Durable and Fast Aqueous K-Ion Battery.ACS NANO,15(11),17717-17728. |
| MLA | Liang, Guojin,et al."Reconstructing Vanadium Oxide with Anisotropic Pathways for a Durable and Fast Aqueous K-Ion Battery".ACS NANO 15.11(2021):17717-17728. |
入库方式： OAI收割
来源：过程工程研究所
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