Microstructure of carbon derived from mangrove charcoal and its application in Li-ion batteries

被引：69

作者：

Liu, Tao ^{[1
]}

Luo, Ruiying ^{[1
]}

Qiao, Wenming ^{[2
]}

Yoon, Seong-Ho ^{[3
]}

Mochida, Isao ^{[3
]}

机构：

[1] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100083, Peoples R China

[2] E China Univ Sci & Technol, Coll Chem Engn, Shanghai 200237, Peoples R China

[3] Kyushu Univ, Inst Mat Chem & Engn, Fukuoka 8168580, Japan

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 05期

关键词：

Biomass-derived carbon; Charcoal; Carbonization; Nuclear magnetic resonance; Electrochemical properties; LITHIUM SECONDARY BATTERIES; NUCLEAR-MAGNETIC-RESONANCE; HARD-CARBON; MICROPOROUS CARBON; ANODE MATERIALS; INSERTION MECHANISM; NMR; CAPACITY; BUCKMINSTERFULLERENE;

D O I：

10.1016/j.electacta.2009.10.051

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this study, the microstructure of mangrove-charcoal-derived carbon (MC) was studied using XRD, STM and TEM. MC was found to consist of aligned quasi-spherical structural units with diameters of around 5-20 nm. It shows typical hard carbon characteristics, including a strongly disoriented single graphene layer and BSU, formed by two or three graphene layers stacked nearly parallel. Some curved and faceted graphene layers, especially closed carbon nanoparticles with fullerene-like, were observed in the as-prepared samples. MC was also evaluated as an anodic material for Li-ion batteries. MC carbonized at 1000 degrees C possessed the highest available discharge capacity (below 0.5V) of 335 mAh g(-1), the high first-cycle coulombic efficiency of 73.7%, good rate and cyclic capability and PC-based electrolyte compatibility. Li-7 nuclear magnetic resonance (NMR) spectra of fully lithiated mangrove charcoal-derived carbons indicated the co-existence of three Li species. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1696 / 1700

页数：5

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