Porous carbon derived from Sunflower as a host matrix for ultra-stable lithium-selenium battery

被引：22

作者：

Jia, Min ^{[1
]}

Niu, Yubin ^{[1
]}

Mao, Cuiping ^{[1
]}

Liu, Sangui ^{[1
]}

Zhang, Yan ^{[1
]}

Bao, Shu-juan ^{[1
]}

Xu, Maowen ^{[1
,2
]}

机构：

[1] Southwest Univ, Fac Mat & Energy, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China

[2] Chongqing Key Lab Micro Nano Mat Engn & Technol, Chongqing 400715, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2017年 / 490卷

关键词：

Porous carbon/Se composite; High surface area; Capacity; Stability; Li-Se battery; LI-SE BATTERIES; HIGH-PERFORMANCE; MICROPOROUS CARBON; SULFUR BATTERIES; ELECTROCHEMICAL PERFORMANCE; CATHODE MATERIAL; COMPOSITES; SHELL;

D O I：

10.1016/j.jcis.2016.12.012

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：

A novel porous carbon material using the spongy tissue of sunflower as raw material is reported for the first time. The obtained porous carbon has an extremely high surface area of 2493.0 m(2) g(-1), which is beneficial to focus on encapsulating selenium in it and have an inhibiting effect about diffusion of polyselenides over the charge/discharge processes used as the host matrix for Li-Se battery. The porous carbon/Se composite electrode with 63 wt% selenium delivers a high specific capacitance of 319 mA h g(-1) of the initial capacity, and maintains 290 mA h g(-1), representing an extremely high capacity retention of 90.9% after 840 cycles with the rate of 1 C. (C) 2016 Published by Elsevier Inc.

引用

页码：747 / 753

页数：7

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