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用于锌离子混合电容器的N、P共掺杂多孔炭/MnO2复合材料

邹振羽 金鑫 吴晓雨 李豪杰 李朋娟 李晓丽

邹振羽, 金鑫, 吴晓雨, 等. 用于锌离子混合电容器的N、P共掺杂多孔炭/MnO2复合材料[J]. 复合材料学报, 2024, 42(0): 1-9.
引用本文: 邹振羽, 金鑫, 吴晓雨, 等. 用于锌离子混合电容器的N、P共掺杂多孔炭/MnO2复合材料[J]. 复合材料学报, 2024, 42(0): 1-9.
ZOU Zhen Yu, JIN Xin, WU Xiao Yu, et al. N, P co-doped porous carbon /MnO2 composites for zinc-ion hybrid capacitors[J]. Acta Materiae Compositae Sinica.
Citation: ZOU Zhen Yu, JIN Xin, WU Xiao Yu, et al. N, P co-doped porous carbon /MnO2 composites for zinc-ion hybrid capacitors[J]. Acta Materiae Compositae Sinica.

用于锌离子混合电容器的N、P共掺杂多孔炭/MnO2复合材料

基金项目: 黑龙江省自然科学基金联合引导项目(批准号: LH2020C040)
详细信息
    通讯作者:

    李晓丽,博士,副教授,硕士生导师,研究方向为生物质碳材料的制备与性能研究、磷腈衍生物合成与阻燃性能研究 E-mail: lixiaoli0903@163.com

  • 中图分类号: TQ424.1;TB333

N, P co-doped porous carbon /MnO2 composites for zinc-ion hybrid capacitors

Funds: Natural Science Foundation of Heilongjiang Province of China (LH2020C040)
  • 摘要: 使用化石燃料导致的环境问题日益严重,清洁能源装置与可再生能源的发展已经成为必然趋势。本文以咖啡渣为碳源,通过简单的一步活化法制备出咖啡渣炭/MnO2复合材料,并探讨了其在锌离子混合电容器(ZHSC)领域的应用。BET测试表明:咖啡渣炭/MnO2复合材料的比表面积为550.25 m2/g,总孔体积为0.6284 cm3/g。电化学测试结果表明,电极材料在电流密度为0.5 A/g时其比电容为401.5 F/g,在20 A/g的大电流密度下比电容达到264 F/g,具有良好的倍率性能。组装的ZHSC在0.5 A/g的电流密度下达到74.2 mA·h/g,能量密度为39.1 W·h/kg,功率密度为4264 W/kg;在10 A/g电流密度下,5000次充放电循环测试后其电容保持率为98%,库伦效率为98.7%,表明其有良好的循环稳定性和可逆性。因此,咖啡渣炭/MnO2复合材料为生物质炭与MnO2复合材料的探索提供了新思路。

     

  • 图  1  不同炭材料的SEM图片(a) NP/MnO2, (b) K-WCG, (c) KNP/MnO2-1.38, (d) KNP/MnO2-2.38

    Figure  1.  SEM images of NP/MnO2 (a), K-WCG (b), KNP/MnO2-1.38 (c) and KNP/MnO2-2.38(d)

    NP/MnO2 is a coffee grounds carbon/MnO2 composite with only hexaldehyde-phenoxy-cyclotriphosphonitrile (HAPCP) and KMnO4 activation. K-WCG is a pure KOH activated carbon material. KNP/MnO2-2.38 is a composite material activated by 2.38 g KMnO4 and 2 g KOH. KNP/MnO2-2.38 is a composite material activated by 2.38 g KMnO4 and 2 g KOH.

    图  2  KNP/MnO2-1.38-2的元素映射图(a) N, (b) P, (c) Mn

    Figure  2.  KNP/MnO2-1.38-2 of elemental mappings of N(a), P(b) and Mn(c)

    图  3  不同炭材料的N2吸附/脱附等温线(a)和BJH介孔孔径分布图(插图为HK微孔孔径分布图) (b)

    Figure  3.  N2 adsorption/desorption isotherms of different carbon materials (a) and BJH mesoporous pore size distribution maps (illustrated as HK pore size distribution maps) (b)

    图  4  不同炭材料的(a)XRD曲线和(b)拉曼光谱

    Figure  4.  (a) XRD and (b) Raman spectra of different carbon materials

    图  5  (a)不同炭材料的XPS谱图; KNP/MnO2-1.38的XPS高分辨率谱图, (b) N 1s拟合谱图, (c) P 2p拟合谱图, (d) Mn 2p拟合谱图

    Figure  5.  XPS survey spectra of carbon materials (a) and N 1s (b), P 2p (c) and Mn 2p (d) spectra of KNP/MnO2-1.38

    图  6  不同炭材料在三电极体系中的电化学性能:(a) 20 mV/s时的CV曲线, (b)1 A/g时的GCD曲线, (c)倍率性能图, (d) Nyquist图, (e) KNP/MnO2-1.38在不同扫速下的CV图, (f) KNP/MnO2-1.38在不同电流密度下的GCD图

    Figure  6.  CV of carbon materials at a scan rate of 20 mV/s (a), GCD of arbon materials at a current density of 1 A/g (b), specific capacitance of carbon materials at different current densities (c), Nyquist plots of carbon materials (d), CV of KNP/MnO2-1.38 at different scan rates (e) and GCD of KNP/MnO2-1.38 at different current densities (f)

    图  7  KNP/MnO2-1.38//Zn的(a)不同电流密度下CV曲线; (b)不同电流密度下GCD曲线; (c) Ragone图; (d) 10 A/g电流密度下循环5000次的电容保持率

    Figure  7.  KNP/MnO2-1.38 //Zn of (a) CV curves at different current densities; (b) GCD curves at different current densities; (c) the Ragone plot; (d) cycling stability at current density of 10 A/g

    表  1  表1 咖啡渣炭/MnO2复合材料的孔结构参数

    Table  1.   Pore structure parameters of coffee grounds based porous carbon materials

    Sample SBET/(m2·g−1) VTotal/(cm3·g−1) Vmeso/(cm3·g−1) Vmico/(cm3·g−1)
    NP/MnO2 133.45 0.1402 0.0970 0.0512
    KNP/MnO2-1.38 550.35 0.6284 0.2256 0.4028
    KNP/MnO2-2.38 526.78 0.4214 0.1710 0.2504
    K-WCG 851.87 0.3752 0.0712 0.3040
    Notes:SBET is surface area; VTotal is total pore volume; Vmeso is mesopore volume obtained by subtracting Vmicro from Vt; Vmico is micropore volume determined by using the t-plot methods.
    下载: 导出CSV

    表  2  不同复合材料的元素含量表

    Table  2.   Element content table of different composite materials

    SampleN/at%O/at%P/at%Mn/at%
    NP/MnO21.4611.721.090.6
    KNP/MnO2-1.384.6715.051.281.77
    KNP/MnO2-2.383.7516.391.251.65
    K-WCG1.5412.580.23
    下载: 导出CSV
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出版历程
  • 收稿日期:  2024-02-18
  • 修回日期:  2024-04-07
  • 录用日期:  2024-04-14
  • 网络出版日期:  2024-05-13

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