A freestanding hollow carbon nanofiber/reduced graphene oxide interlayer for high-performance lithium-sulfur batteries

被引：60

作者：

Zhang, Zhian ^{[1
]}

Wang, Guanchao ^{[1
]}

Lai, Yanqing ^{[1
]}

Li, Jie ^{[1
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 663卷

关键词：

Lithium-sulfur batteries; Interlayer; Polysulfides; LI-S BATTERIES; ENHANCED CYCLE PERFORMANCE; FUNCTIONAL INTERLAYER; ENCAPSULATING SULFUR; COATED SEPARATOR; CATHODE MATERIAL; POLYSULFIDE; LAYER; PROSPECTS; MEMBRANE;

D O I：

10.1016/j.jallcom.2015.11.120

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：

Rechargeable lithium-sulfur (Li-S) batteries have attracted more and more attention in recent years, and a large number of efforts have been made to improve their electrochemical performance. Herein, a freestanding hollow carbon nanofiber/reduced graphene oxide (HCNF/rGO) interlayer is prepared by simple method via vacuum filtration and heat treatment. The utilization of the HCNF/rGO interlayer enables the inhabitation of the diffusion of polysulfides and offers unobstructed channels for ions and electrons. An initial specific discharge capacity of 1318.4 mAh g(-1) at 0.2 C and a capacity fade of 0.13% per cycle at 1 C of Li-S cells with the HCNF/rGO interlayer are achieved. Meanwhile, the cells exhibit outstanding rate capability with a discharge capacity of 630 mAh g(-1) at a discharge current density of 10 C. Therefore, a HCNF/rGO interlayer with specific structure demonstrates potential for high-performance Li-S batteries. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：501 / 506

页数：6

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