用于长寿命锂-空气二次电池的铁-碳纳米管纳米电缆结构电化学催化剂及其电荷迁移增强机制（英文）

被引：3

作者：

于梦舟 ^{[1
]}

周思 ^{[2
]}

刘洋 ^{[1
]}

王治宇 ^{[1
]}

周涛 ^{[3
]}

赵纪军 ^{[2
]}

赵宗彬 ^{[1
]}

邱介山 ^{[1
]}

机构：

[1] State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Liaoning Key Laboratory for Energy Materials and Chemical Engineering,PSU-DUT Joint Center for Energy Research, Dalian University of Technology

[2] Ministry of Education Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology

[3] State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University

来源：

ScienceChinaMaterials | 2017年 / 60卷 / 05期

关键词：

Li-O2; battery; cathode catalyst; N-doped carbon nanotube; Fe nanorods; first-principles calculation;

D O I：

暂无

中图分类号：

O643.36 [催化剂]; TM911.41 [金属-空气电池];

学科分类号：

081705 ; 0808 ;

摘要：

锂-空气二次电池是当前能量密度最高的二次电池体系之一,高效阴极催化剂的创制构筑是构筑高性能锂-空气电池的关键技术之一.本文基于简便易行的全固相热解反应,设计构筑了一种具有纳米电缆结构的新型铁-碳纳米管电化学催化剂.第一性原理计算表明碳纳米管与其内部包覆的铁纳米棒之间的电荷迁移与协同分布效应可有效促进氧气在碳纳米管表面的化学吸附与转化.得益于此,基于其的锂-空气电池在限制比容量为600 mA h g-1时,循环寿命可达270次,基于此催化剂与固态放电产物（Li2O2）总质量的电极比能量可达2120–2600W h kg-1.本研究为锂-空气二次电池用高性能阴极催化剂的开发提供了有效途径.

引用

页码：415 / 426

页数：12

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