Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: All-MXene-Based Integrated Electrode Constructed by Ti3C2 Nanoribbon Framework Host and Nanosheet Interlayer for High-Energy-Density Li-S Batteries
作者: Dong, YF;  Zheng, SH;  Qin, JQ;  Zhao, XJ;  Shi, HD;  Wang, XH;  Chen, J;  Wu, ZS
发表日期: 2018-3-1
摘要: High-energy-density lithium-sulfur (Li-S) batteries hold promise for next-generation portable electronic devices, but are facing great challenges in rational construction of high-performance flexible electrodes and innovative cell configurations for actual applications. Here we demonstrated an all-MXene-based flexible and integrated sulfur cathode, enabled by three-dimensional alkalized Ti3C2 MXene nanoribbon (a-Ti3C2 MNR) frameworks as a S/polysulfides host (a-Ti3C2-S) and two-dimensional delaminated Ti3C2 MXene (d-Ti3C2) nano-sheets as interlayer on a polypropylene (PP) separator, for high-energy and long-cycle Li-S batteries. Notably, an a-Ti3C2 MNR framework with open interconnected macropores and an exposed surface area guarantees high S loading and fast ionic diffusion for prompt lithiation/delithiation kinetics, and the 2D d-Ti3C2 MXene interlayer remarkably prevents the shuttle effect of lithium polysulfides via both chemical absorption and physical blocking. As a result, the integrated a-Ti3C2-S/d-Ti3C2/PP electrode was directly used for Li-S batteries, without the requirement of a metal current collector, and exhibited a high reversible capacity of 1062 mAh g(-1) at 0.2 C and enhanced capacity of 632 mAh g(-1) after 50 cycles at 0.5 C, outperforming the a-Ti3C2-S/PP electrode (547 mAh g(-1)) and conventional a-Ti3C2-S on an Al current collector (a-Ti3C2-S/Al) (597 mAh g(-1)). Furthermore, the all-MXene-based integrated cathode displayed outstanding rate capacity of 288 mAh g(-1) at 10 C and long-life cyclability. Therefore, this proposed strategy of constructing an all-MXene-based cathode can be readily extended to assemble a large number of MXene-derived materials, from a group of 60+ MAX phases, for applications such as various batteries and supercapacitors.
刊名: ACS NANO
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.




Recommended Citation:
Dong, YF,Zheng, SH,Qin, JQ,et al. All-mxene-based Integrated Electrode Constructed By Ti3c2 Nanoribbon Framework Host And Nanosheet Interlayer For High-energy-density Li-s Batteries[J]. Acs Nano,2018,12(3):2381-2388.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Dong, YF]'s Articles
 [Zheng, SH]'s Articles
 [Qin, JQ]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Dong, YF]‘s Articles
 [Zheng, SH]‘s Articles
 [Qin, JQ]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院金属研究所  -Feedback
Powered by CSpace