High performance mesoporous C@Se composite cathodes derived from Ni-based MOFs for Li-Se batteries

被引：45

作者：

Liu, Ting ^{[1
,2
]}

Zhang, Yan ^{[1
,2
]}

Hou, Junke ^{[1
,2
]}

Lu, Shiyu ^{[1
,2
]}

Jiang, Jian ^{[1
,2
]}

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 Adv Mat & Technol Clean Energie, Chongqing 400715, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 102期

关键词：

LITHIUM-SELENIUM BATTERIES; METAL-ORGANIC FRAMEWORKS; DIRECT CARBONIZATION; CARBON NANOSPHERES; NANOPOROUS CARBON; CYCLING STABILITY; SULFUR BATTERIES; STORAGE CAPACITY;

D O I：

10.1039/c5ra14979g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A mesoporous carbon matrix derived from MOF-Ni prepared via a hydrothermal method was used for encapsulating selenium as a cathode material for Li-Se batteries. Thermogravimetric analysis and energy-dispersive X-ray analysis confirm that selenium is highly homogeneously distributed in the composite with a mass loading up to 48%. It exhibits an initial discharge capacity of 599.7 mA h g(-1) and retains 417 mA h g(-1) with a high coulombic efficiency of 99.9% after 100 cycles at a high rate of 3C, of which the excellent electrochemical performance is mainly attributed to the high conductivity and the hollow structure of the carbon matrix.

引用

页码：84038 / 84043

页数：6

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