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

當前位置:群英聚首 >> 最新動態 >> 正文
祝賀Journal of Energy Storage接受泡桐木質部3D連接多孔結構硬質碳用于高倍率性能鈉離子電池陽極的研究論文!
來源:黃士飛助理研究員個人網站 發布日期:2024-01-11

 Biomass-derived hard carbon has garnered significant attention due to its high capacity, low cost and abundant resources. However, the application of biomass hard carbon is limited by the low initial coulombic efficiency and rate capability. Based on these issues, natural fortune paulownia wood with numerous pores has been used as the precursor to investigate the effects on initial coulombic efficiency and rate capability at different heating temperatures. As the heating temperature increased from 1000 °C to 1400 °C, the graphitization degree of the prepared hard carbon gradually increased, and the defect concentration gradually decreased, resulting in an increase in ICE from 76.8 % to 85.9 %, and a significant increase in the proportion of platform capacity from 49 % to 69 %. The prepared HC-1400 exhibits a reversible capacity of 313 mAh g?1 at 0.1 C, and can still achieve a capacity retention rate of 92 % after 500 cycles at 1 C (charge) and 5 C (discharge). Meanwhile, due to the excellent inheritance of the 3D connected porous structure of paulownia xylem, the prepared hard carbon even exhibits an excellent capacity of 209 mAh g?1 at 10 C. In addition, the assembled HC-1400||Na3V2(PO4)3 full battery also demonstrated a high energy density of 204.4 Wh kg?1 at 0.5 C, and still exhibited 116.6 Wh kg?1 even at a high rate of 10 C. This study will provide strong guidance for designing and preparing hard carbon with both high capacity and high rate performance for sodium-ion batteries anode.

本文第一作者揚州大學徐江特聘教授,通訊作者揚州大學黃士飛青年百人計劃特聘教授

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 沐川县| 玉环县| 平乐县| 泰兴市| 灵山县| 德江县| 玉田县| 青铜峡市| 尚义县| 遵化市| 油尖旺区| 湾仔区| 霍城县| 玉门市| 岚皋县| 西贡区| 灵川县| 缙云县| 历史| 临潭县| 金沙县| 诏安县| 海兴县| 肇州县| 涿鹿县| 玉林市| 六安市| 庆阳市| 广德县| 隆林| 贞丰县| 方正县| 易门县| 许昌市| 曲阳县| 思茅市| 山阴县| 枣阳市| 香港 | 灯塔市| 大同市|