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(dāng)前位置:群英聚首 > 論文著作 > 正文
Zeolitic Imidazolate Framework-Derived Copper Single Atom Anchored on Nitrogen-Doped Porous Carbon as Highly Efficient Electrocatalyst for Oxygen Reduction Reaction toward Zn-Air Battery
來源:牛文軍副研究員個(gè)人網(wǎng)站 發(fā)布日期:2022-04-24
作者:Wen-Jun Niu*, Qiao-Qiao Sun, Jin-Zhong He, Jiang-Lei Chen, Bing-Ni Gu, Ming-Jin Li
關(guān)鍵字:Tubular g-C3N4, Copper single atoms, Nitrogen-doped porous carbon, Cu-N4 active sites, Oxygen reduction reactions
論文來源:期刊
具體來源:Chemistry of Materials
發(fā)表時(shí)間:2022年

Here, copper single atoms anchored on nitrogen-doped porous carbon (Cu-N/PC) derived from zeolitic imidazolate frameworks (ZIFs) as highly efficient electrocatalyst for oxygen reduction reaction (ORR) were demonstrated. Specifically, as a nitrogen-rich bridge-molecule, tubular g-C3N4 (TCN) can trap free Cu ions through the electrostatic interaction in the initial stage. Then, the Cu ions doped TCN can be used to regulate the content of copper and nitrogen doping, the electronic structure, as well as the specific surface area and pore diameter of Cu-N/PC. As a result, the high density of exposed Cu-N4 active sites and the high level of porosity in Cu-N/PC may significantly enhance the ORR activity with a more positive onset potential (E0 = 0.97 V vs. RHE) and half-wave potential (E1/2 = 0.88 V) than the commercially available Pt/C catalyst (E0 = 0.94, E1/2 = 0.85 V). Furthermore, the homemade Zn-air battery (ZAB) equipped with Cu-N/PC is able to deliver excellent performance, including a peak power density of 215.8 mW cm?2 and a specific capacity of 704.9 mAh g?1 based on Zn anode, outperforming the Pt/C catalyst. The finding highlights a new guideline for constructing Cu-N/PC catalyst with a well-designed structure and superior property for advanced fuel cells cathode materials.

Copyright © 2005 Polymer.cn All rights reserved
中國(guó)聚合物網(wǎng) 版權(quán)所有
經(jīng)營(yíng)性網(wǎng)站備案信息

京公網(wǎng)安備11010502032929號(hào)

工商備案公示信息

京ICP證050801號(hào)

京ICP備12003651號(hào)

主站蜘蛛池模板: 凌源市| 海口市| 肇东市| 密山市| 五台县| 青岛市| 赫章县| 阳曲县| 临潭县| 灌南县| 灵宝市| 南岸区| 且末县| 麻城市| 将乐县| 湘潭县| 平定县| 伊通| 玉林市| 和田县| 五峰| 石阡县| 蒙阴县| 龙口市| 平阴县| 兰溪市| 衢州市| 平安县| 梧州市| 邹城市| 安庆市| 拜泉县| 汽车| 美姑县| 夏津县| 酉阳| 绥江县| 乐安县| 肥乡县| 扶风县| 鸡泽县|