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以马利筋冠毛为锂硫电池阴极材料的微孔中空碳的合成及电化学性能

Synthesis and Electrochemical Performance of Microporous Hollow Carbon from Milkweed Pappus as Cathode Material of Lithium-Sulfur Batteries.

作者信息

Kim Jun-Ki, Choi Yunju, Jeong Euh Duck, Lee Sei-Jin, Kim Hyun Gyu, Chung Jae Min, Kim Jeom-Soo, Lee Sun-Young, Bae Jong-Seong

机构信息

Busan Center, Korea Basic Science Institute (KBSI), Busan 46742, Korea.

Jeonju Center, Korea Basic Science Institute (KBSI), Jeonju 54907, Korea.

出版信息

Nanomaterials (Basel). 2022 Oct 14;12(20):3605. doi: 10.3390/nano12203605.

DOI:10.3390/nano12203605
PMID:36296795
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9606866/
Abstract

Microtube-like porous carbon (MPC) and tube-like porous carbon-sulfur (MPC-S) composites were synthesized by carbonizing milkweed pappus with sulfur, and they were used as cathodes for lithium-sulfur batteries. The morphology and uniformity of these materials were characterized using X-ray powder diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy with an energy-dispersive X-ray analyzer, thermogravimetric analysis, and X-ray photoelectron spectrometry. The electrochemical performance of the MPC-S cathodes was measured using the charge/discharge cycling performance, C rate, and AC impedance. The composite cathodes with 93.8 wt.% sulfur exhibited a stable specific capacity of 743 mAh g after 200 cycles at a 0.5 C.

摘要

通过用硫碳化马利筋绒毛合成了微管状多孔碳（MPC）和管状多孔碳硫（MPC-S）复合材料，并将它们用作锂硫电池的阴极。使用X射线粉末衍射、拉曼光谱、扫描电子显微镜、带有能量色散X射线分析仪的透射电子显微镜、热重分析和X射线光电子能谱对这些材料的形态和均匀性进行了表征。使用充放电循环性能、C倍率和交流阻抗来测量MPC-S阴极的电化学性能。含93.8 wt.%硫的复合阴极在0.5 C下循环200次后表现出743 mAh g的稳定比容量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/0c80ff652334/nanomaterials-12-03605-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/a98c024ad35d/nanomaterials-12-03605-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/1c5a4c092da9/nanomaterials-12-03605-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/ea06414fb064/nanomaterials-12-03605-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/9d9915a43d79/nanomaterials-12-03605-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/64643b14cba0/nanomaterials-12-03605-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/6b81033d10bb/nanomaterials-12-03605-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/bf050c9ecda4/nanomaterials-12-03605-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/2c0bd993bde4/nanomaterials-12-03605-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/3bd62be4cf7a/nanomaterials-12-03605-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/0c80ff652334/nanomaterials-12-03605-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/a98c024ad35d/nanomaterials-12-03605-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/1c5a4c092da9/nanomaterials-12-03605-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/ea06414fb064/nanomaterials-12-03605-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/9d9915a43d79/nanomaterials-12-03605-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/64643b14cba0/nanomaterials-12-03605-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/6b81033d10bb/nanomaterials-12-03605-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/bf050c9ecda4/nanomaterials-12-03605-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/2c0bd993bde4/nanomaterials-12-03605-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/3bd62be4cf7a/nanomaterials-12-03605-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fb7/9606866/0c80ff652334/nanomaterials-12-03605-g010.jpg

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