Restraining Oxygen Loss and Boosting Reversible Oxygen Redox in a P2-Type Oxide Cathode by Trace Anion Substitution
文献类型：期刊论文
| 作者 | Zhao, Chong1; Yang, Qi1; Geng, Fushan1; Li, Chao1; Zhang, Nian2; Ma, Jingyuan2; Tong, Wei3 ; Hu, Bingwen1
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| 刊名 | ACS APPLIED MATERIALS & INTERFACES
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| 出版日期 | 2021-01-13 |
| 卷号 | 13 |
| ISSN号 | 1944-8244 |
| 关键词 | oxygen redox cathode F-substitution O-2 loss layered oxides |
| DOI | 10.1021/acsami.0c16236 |
| 通讯作者 | Li, Chao(lchao@phy.ecnu.edu.cn) |
| 英文摘要 | Oxygen redox has recently emerged as a lever to boost the specific energy density of layered sodium transition metal oxide cathode materials. However, the oxygen redox reaction is universally confronted with concomitant issues such as irreversible lattice oxygen loss and parasitical electrolyte degradation, thus debilitating cycling stability. Herein, a novel F-substituted layered structure P2-Na(0.65)Li(0.22)MnO(199)F(001 )cathode is designed, which exhibits superb capacity retention (183.6 mAh g(-1) after 50 cycles at 0.05C, 87.8% of the highest discharge capacity) and rate capability (105.5 mAh g(-1) at 5C) in Na half-cells. Such results are nontrivial as this system only contains the low-cost Mn transition metal element. Moreover, by systematic bulk/surface spectroscopy evidence (hard and soft X-ray absorption spectroscopy, electron paramagnetic resonance, and operando differential electrochemical mass spectrometry), we explicitly corroborate that the irreversible oxygen evolution and notorious Jahn-Teller distortion are effectively subdued by trace F-substitution. In addition, a higher oxygen vacancy formation energy for the F-substituted structure was demonstrated via density functional theory calculations. Anionic substitution could therefore be an impactful solution to boost reversible oxygen redox chemistry for layered sodium oxide cathodes. |
| WOS关键词 | VOLTAGE HYSTERESIS ; ENERGY DENSITY ; ION BATTERIES ; HIGH-CAPACITY ; LOW-COST ; SODIUM ; METAL ; INTERCALATION ; PHASE ; ELECTROCHEMISTRY |
| 资助项目 | National Natural Science Foundation of China[21902049] ; National Natural Science Foundation of China[21872055] ; Shanghai Sailing Program[19YF1413000] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000611066000031 |
| 资助机构 | National Natural Science Foundation of China ; Shanghai Sailing Program |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/120610]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li, Chao |
| 作者单位 | 1.East China Normal Univ, Sch Phys & Elect Sci, Shanghai Key Lab Magnet Resonance, Shanghai 200241, Peoples R China 2.Shanghai Synchrotron Radiat Facil SSRF, Shanghai 201204, Peoples R China 3.Chinese Acad Sci, Anhui Key Lab Condensed Matter Phys Extreme Condi, High Magnet Field Lab, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Chong,Yang, Qi,Geng, Fushan,et al. Restraining Oxygen Loss and Boosting Reversible Oxygen Redox in a P2-Type Oxide Cathode by Trace Anion Substitution[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13. |
| APA | Zhao, Chong.,Yang, Qi.,Geng, Fushan.,Li, Chao.,Zhang, Nian.,...&Hu, Bingwen.(2021).Restraining Oxygen Loss and Boosting Reversible Oxygen Redox in a P2-Type Oxide Cathode by Trace Anion Substitution.ACS APPLIED MATERIALS & INTERFACES,13. |
| MLA | Zhao, Chong,et al."Restraining Oxygen Loss and Boosting Reversible Oxygen Redox in a P2-Type Oxide Cathode by Trace Anion Substitution".ACS APPLIED MATERIALS & INTERFACES 13(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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