Synthesis, structure and electrochemical properties of lanthanum manganese nanofibers doped with Sr and Cu

被引：64

作者：

Cao, Yi ^{[1
]}

Lin, Baoping ^{[1
]}

Sun, Ying ^{[1
]}

Yang, Hong ^{[1
]}

Zhang, Xueqin ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 638卷

关键词：

Lanthanum manganese; Supercapacitor; Electrospinning; Nanofibers; Double doping; BIRNESSITE-TYPE MNO2; ELECTRODE MATERIAL; ACTIVATED CARBON; MAGNETIC-PROPERTIES; ASSISTED SYNTHESIS; FACILE SYNTHESIS; NICKEL FOAM; FUEL-CELLS; HIGH-POWER; PERFORMANCE;

D O I：

10.1016/j.jallcom.2015.03.054

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：

LaxSr1-xCu0.1Mn0.9O3-delta (LNF-x) (0.1 <= x <= 1) nanofibers are prepared by electrospun method. The structure of LNF-x and the electrochemical properties of LNF-x in 1 M Na2SO4 aqueous electrolyte are investigated. As a result, LNF-x nanofibers present a perovskite structure, and the LNF-0.5 sample exhibits the highest specific capacitance value of 464.5 F g(-1) at a current density of 2 A g(-1). The maximum energy density of 64.5Wh kg(-1) are achieved at a power density of 2 kW kg(-1) for the symmetric supercapacitor prepared by La0.5Sr0.5Cu0.1Mn0.9O3-delta nanofibers. More importantly, this symmetric supercapacitor also shows an excellent cycling life after 2000 charging and discharging cycles. Those results offer a suitable design of electrode materials for high-performance supercapacitors. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：204 / 213

页数：10

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