Xiaoyan Shi, Zhiqiang Hao, Wenqing Zhu, Xunzhu Zhou, Xiaomin Chen, Chenchen Wang, Lin Li, A. Robert Armstrong, Shu-Lei Chou
{"title":"具有多孔结构的 Na4Fe3(PO4)2(P2O7)/C 复合材料可制成全天候长寿命钠离子电池","authors":"Xiaoyan Shi, Zhiqiang Hao, Wenqing Zhu, Xunzhu Zhou, Xiaomin Chen, Chenchen Wang, Lin Li, A. Robert Armstrong, Shu-Lei Chou","doi":"10.1007/s40843-024-3082-x","DOIUrl":null,"url":null,"abstract":"<p>Na<sub>4</sub>Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>) (NFPP) with the advantages of low cost and stable crystal structure has been considered a highly promising cathode candidate for sodium-ion batteries. However, limited by its undesirable intrinsic conductivity, it still suffers from unsatisfactory electrochemical performance. Herein, we synthesized NFPP/C composites with porous structure (p-NFPP) by a facile self-assembly strategy. Its well-developed pore structure can effectively reduce the ion diffusion path, accelerate electrolyte infiltration and accommodate volume expansion during the charge/discharge process. In addition, <i>in-situ</i> X-ray diffraction revealed the superior structural stability of p-NFPP. They enable a high reversible capacity (104.8 mAh g<sup>−1</sup>), and good rate performance (75.0 mAh g<sup>−1</sup> at 10 A g<sup>−1</sup>), and excellent cycling stability (a reversible capacity of 85.1 mAh g<sup>−1</sup> after 2000 cycles). More importantly, the p-NFPP realizes a stable operation in a wide temperature range of 55°C to −10°C. This work highlights morphology engineering as a powerful strategy to boost the all-climate sodium storage performance of electrode materials.</p>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":null,"pages":null},"PeriodicalIF":6.8000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Na4Fe3(PO4)2(P2O7)/C composite with porous structure enabling all-climate and long-life sodium-ion batteries\",\"authors\":\"Xiaoyan Shi, Zhiqiang Hao, Wenqing Zhu, Xunzhu Zhou, Xiaomin Chen, Chenchen Wang, Lin Li, A. Robert Armstrong, Shu-Lei Chou\",\"doi\":\"10.1007/s40843-024-3082-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Na<sub>4</sub>Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>) (NFPP) with the advantages of low cost and stable crystal structure has been considered a highly promising cathode candidate for sodium-ion batteries. However, limited by its undesirable intrinsic conductivity, it still suffers from unsatisfactory electrochemical performance. Herein, we synthesized NFPP/C composites with porous structure (p-NFPP) by a facile self-assembly strategy. Its well-developed pore structure can effectively reduce the ion diffusion path, accelerate electrolyte infiltration and accommodate volume expansion during the charge/discharge process. In addition, <i>in-situ</i> X-ray diffraction revealed the superior structural stability of p-NFPP. They enable a high reversible capacity (104.8 mAh g<sup>−1</sup>), and good rate performance (75.0 mAh g<sup>−1</sup> at 10 A g<sup>−1</sup>), and excellent cycling stability (a reversible capacity of 85.1 mAh g<sup>−1</sup> after 2000 cycles). More importantly, the p-NFPP realizes a stable operation in a wide temperature range of 55°C to −10°C. This work highlights morphology engineering as a powerful strategy to boost the all-climate sodium storage performance of electrode materials.</p>\",\"PeriodicalId\":773,\"journal\":{\"name\":\"Science China Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.8000,\"publicationDate\":\"2024-08-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Science China Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s40843-024-3082-x\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science China Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s40843-024-3082-x","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
Na4Fe3(PO4)2(P2O7)(NFPP)具有成本低、晶体结构稳定等优点,一直被认为是钠离子电池极具潜力的阴极候选材料。然而,受限于其不理想的内在电导率,它的电化学性能仍然不尽如人意。在此,我们采用简便的自组装策略合成了具有多孔结构的 NFPP/C 复合材料(p-NFPP)。其发达的孔隙结构可有效减少离子扩散路径,加速电解质渗透,并在充放电过程中适应体积膨胀。此外,原位 X 射线衍射显示 p-NFPP 具有优异的结构稳定性。它们具有较高的可逆容量(104.8 mAh g-1)、良好的速率性能(10 A g-1 时为 75.0 mAh g-1)和出色的循环稳定性(2000 次循环后的可逆容量为 85.1 mAh g-1)。更重要的是,p-NFPP 可在 55°C 至 -10°C 的宽温度范围内稳定工作。这项工作凸显了形态工程是提高电极材料全气候钠存储性能的有力策略。
Na4Fe3(PO4)2(P2O7)/C composite with porous structure enabling all-climate and long-life sodium-ion batteries
Na4Fe3(PO4)2(P2O7) (NFPP) with the advantages of low cost and stable crystal structure has been considered a highly promising cathode candidate for sodium-ion batteries. However, limited by its undesirable intrinsic conductivity, it still suffers from unsatisfactory electrochemical performance. Herein, we synthesized NFPP/C composites with porous structure (p-NFPP) by a facile self-assembly strategy. Its well-developed pore structure can effectively reduce the ion diffusion path, accelerate electrolyte infiltration and accommodate volume expansion during the charge/discharge process. In addition, in-situ X-ray diffraction revealed the superior structural stability of p-NFPP. They enable a high reversible capacity (104.8 mAh g−1), and good rate performance (75.0 mAh g−1 at 10 A g−1), and excellent cycling stability (a reversible capacity of 85.1 mAh g−1 after 2000 cycles). More importantly, the p-NFPP realizes a stable operation in a wide temperature range of 55°C to −10°C. This work highlights morphology engineering as a powerful strategy to boost the all-climate sodium storage performance of electrode materials.
期刊介绍:
Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.