Influence of micropore structure on Li-storage capacity in hard carbon spherules

被引：45

作者：

Hu, J ^{[1
]}

Li, H ^{[1
]}

Huang, XJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Nanoscale Phys & Devices Lab, Beijing 100080, Peoples R China

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 11-12期

关键词：

hard carbon spherules; anode; micropore; micromulsion; hydrothermal;

D O I：

10.1016/j.ssi.2005.02.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hard carbon spherules (HCS) were synthesized by a normal hydrothermal method (HCS1) and a microemulsion-mediated (reverse micelles) hydrothermal method (HCS2). The results from nitrogen adsorption isotherm at 77 K and carbon dioxide adsorption isotherm at 273 K showed that the micropores of HCS2 are smaller than that of HCS1. HCS2 with smaller micropores shows higher emf value and larger Li-storage capacity around 0 V while HCS I with larger micropores exhibits better kinetic performance at high current density. It is found that micropore structure plays a key role in the thermodynamic and kinetic behaviors of Li-ion insertion and extraction process. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1151 / 1159

页数：9

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