私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
  • 通信地址:陜西省西安市西北工業大學長安校區理學院446辦公室
  • 郵編:710129
  • 電話:+86-029-88431675
  • 傳真:029-88431675
  • Email:blzhang@nwpu.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
Heteroatom doping hollow vanadium oxide/carbon composites as universal anode materials for efficient alkali-metal ion storage.
作者:Chen Junjie, Wang Ting, Chen Chen, Zhang Qiuyu*, Zhang Baoliang
關鍵字:Ostwald-ripening, Vanadium oxide, Anode materials, Alkali metal-ion batteries, DFT calculation
論文來源:期刊
具體來源:Carbon
發表時間:2022年
Hollow structure and heteroatom doping strategies are effective approaches to prepare high-performance energy storage materials. Herein, hollow precursors are obtained in a solvothermal reaction based on Ostwald-ripening process, time-tracking and variable-control methods are adopted to explore the formation mechanism and influencing factors of hollow precursors. Selenium-doped V2O3/carbon composites (VOSe) are prepared via the high-temperature selenization process. VOSe manifests abundant internal space and plentiful defects, which provides more adsorption sites for Na+/K+/Li+ and facilitates immersion of the electrolyte. Therefore, VOSe exhibits a higher capacity and excellent cycle stability for sodium storage (201.5 mA h/g after 2700 cycles at 3.0 A/g), potassium storage (162.3 mA h/g after 500 cycles at 0.5 A/g) and lithium storage (305 mA h/g at 5.0 A/g over 1000 cycles), Compared to V2O3/carbon composites (VO), kinetic analysis and DFT calculation indicate that VOSe possesses more rapid Na + diffusion kinetics and lower diffusion barrier. The reversible chemical transformation of Na++V2O3 ? α-NaVO3 and performance evolution are characterized via ex-situ analyses. Finally, full-cells assembled with Na3V2(PO4)3 cathode exhibits superior cycle stability (170.8 mA h/g after 150 cycles at 0.5 A/g).
主站蜘蛛池模板: 襄汾县| 吴桥县| 微山县| 临汾市| 白银市| 惠州市| 称多县| 玉环县| 长武县| 久治县| 油尖旺区| 浮梁县| 墨江| 高陵县| 阿拉尔市| 温泉县| 阿瓦提县| 调兵山市| 奉贤区| 平阴县| 林州市| 胶州市| 兴城市| 镇赉县| 孝义市| 安顺市| 西林县| 托克托县| 南陵县| 调兵山市| 泸水县| 凌云县| 和顺县| 玛曲县| 大理市| 孝昌县| 汶上县| 和政县| 邛崃市| 图们市| 新源县|