{"title":"微晶nb16w5o55向超高速锂离子电池增强电子传递和离子扩散的界面工程","authors":"Haixia Liu, Wei Dong, Jingyi Hao, Feng Yu, Qigao Han, Chi Guo","doi":"10.1007/s11581-025-06422-x","DOIUrl":null,"url":null,"abstract":"<div><p>The performance of lithium-ion batteries, including their maximum output power and minimum charging time, is fundamentally constrained by the efficiency of ion and electron transport. These processes are governed by the electron conductivity and ion diffusion within active electrode materials, and the ionic mobility within the electrolyte. In this work, micron-sized Nb<sub>16</sub>W<sub>5</sub>O<sub>55</sub> particles were coated with reduced graphene oxide (rGO). Simultaneously, the electrolyte was carefully engineered to further support high-rate performance. These modifications significantly improve the material’s electronic conductivity while optimizing interfacial ion diffusion. Hence, the micron-sized rGO/Nb<sub>16</sub>W<sub>5</sub>O<sub>55</sub> exhibits a high reversible capacity (> 250 mAh g<sup>−1</sup> at 0.2 C) with ultra-high rate performance (≈114 mAh g<sup>−1</sup> at 80 C). In addition, the capacity of Li||rGO/Nb<sub>16</sub>W<sub>5</sub>O<sub>55</sub> pouch cell maintains 99.2% after 100 cycles at 10 C. The series-connected pouch cells can charge mobile phones through wireless charging technology. This work offers valuable insights into the interfacial engineering of electrodes, paving the way for fast-charging battery applications.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 7","pages":"6829 - 6837"},"PeriodicalIF":2.6000,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Interface engineering of micro-Nb16W5O55for enhanced electron transport and ion diffusion toward ultra-high-rate lithium-ion batteries\",\"authors\":\"Haixia Liu, Wei Dong, Jingyi Hao, Feng Yu, Qigao Han, Chi Guo\",\"doi\":\"10.1007/s11581-025-06422-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The performance of lithium-ion batteries, including their maximum output power and minimum charging time, is fundamentally constrained by the efficiency of ion and electron transport. These processes are governed by the electron conductivity and ion diffusion within active electrode materials, and the ionic mobility within the electrolyte. In this work, micron-sized Nb<sub>16</sub>W<sub>5</sub>O<sub>55</sub> particles were coated with reduced graphene oxide (rGO). Simultaneously, the electrolyte was carefully engineered to further support high-rate performance. These modifications significantly improve the material’s electronic conductivity while optimizing interfacial ion diffusion. Hence, the micron-sized rGO/Nb<sub>16</sub>W<sub>5</sub>O<sub>55</sub> exhibits a high reversible capacity (> 250 mAh g<sup>−1</sup> at 0.2 C) with ultra-high rate performance (≈114 mAh g<sup>−1</sup> at 80 C). In addition, the capacity of Li||rGO/Nb<sub>16</sub>W<sub>5</sub>O<sub>55</sub> pouch cell maintains 99.2% after 100 cycles at 10 C. The series-connected pouch cells can charge mobile phones through wireless charging technology. This work offers valuable insights into the interfacial engineering of electrodes, paving the way for fast-charging battery applications.</p></div>\",\"PeriodicalId\":599,\"journal\":{\"name\":\"Ionics\",\"volume\":\"31 7\",\"pages\":\"6829 - 6837\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-05-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ionics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11581-025-06422-x\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ionics","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11581-025-06422-x","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
锂离子电池的性能,包括其最大输出功率和最小充电时间,从根本上受到离子和电子输运效率的制约。这些过程是由活性电极材料中的电子电导率和离子扩散以及电解质中的离子迁移率所控制的。在这项工作中,微米级的Nb16W5O55颗粒被还原氧化石墨烯(rGO)包裹。同时,电解液经过精心设计以进一步支持高速率性能。这些修饰显著提高了材料的电子导电性,同时优化了界面离子扩散。因此,微米级的rGO/Nb16W5O55具有高可逆容量(0.2℃时为250 mAh g−1)和超高倍率性能(80℃时≈114 mAh g−1)。此外,Li||rGO/Nb16W5O55袋式电池在10℃下循环100次后容量保持在99.2%,串联的袋式电池可以通过无线充电技术为手机充电。这项工作为电极的界面工程提供了有价值的见解,为快速充电电池的应用铺平了道路。
Interface engineering of micro-Nb16W5O55for enhanced electron transport and ion diffusion toward ultra-high-rate lithium-ion batteries
The performance of lithium-ion batteries, including their maximum output power and minimum charging time, is fundamentally constrained by the efficiency of ion and electron transport. These processes are governed by the electron conductivity and ion diffusion within active electrode materials, and the ionic mobility within the electrolyte. In this work, micron-sized Nb16W5O55 particles were coated with reduced graphene oxide (rGO). Simultaneously, the electrolyte was carefully engineered to further support high-rate performance. These modifications significantly improve the material’s electronic conductivity while optimizing interfacial ion diffusion. Hence, the micron-sized rGO/Nb16W5O55 exhibits a high reversible capacity (> 250 mAh g−1 at 0.2 C) with ultra-high rate performance (≈114 mAh g−1 at 80 C). In addition, the capacity of Li||rGO/Nb16W5O55 pouch cell maintains 99.2% after 100 cycles at 10 C. The series-connected pouch cells can charge mobile phones through wireless charging technology. This work offers valuable insights into the interfacial engineering of electrodes, paving the way for fast-charging battery applications.
期刊介绍:
Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.