Low-crystalline FeOOH Nanoparticle Anode with High Comprehensive Electrochemical Performance for Advanced Supercapacitors
Carbon materials are generally preferred as anodes in supercapacitors,however their low capacitance limits the attained energy density of hybrid and asymmetric supercapacitors.Here,we develop a novel strategy to synthesize low-crystalline FeOOH nanoparticle anode with high comprehensive performance at a wide potential window.The FeOOH nanoparticles present high capacitance at both low and high mass loadings(1066 and 716 F g-1 at 1.6 and 9.1 mg cm-2 respectively),good rate capability(74.6%capacitance retention at 30 A g-1)and excellent cycling stability(91%capacitance retention after 10000 cycles).The excellent performance is attributed to the dominant capacitive charge-storage contribution(~90%at 5 mV s-1).A NiMoO4//FeOOH hybrid supercapacitor shows exceptional stability during float voltage test for 450 hours and high energy density of 104 Wh kg-1 at a power density of 1.27 kW kg-1.The packaged device delivers high gravimetric and volumetric energy densities of 33.14 Wh kg-1 and 17.24 Wh L-1,respectively.
low-crystalline FeOOH hybrid supercapacitor devices pseudocapacitance high energy density capacitive-dominant contribution
Kwadwo Asare Owusu Longbing Qu Jiantao Li Zhaoyang Wang Kangning Zhao Chao Yang Kalele Mulonda Hercule Chao Lin Changwei Shi Qiulong Wei Liang Zhou Liqiang Mai
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University Department of Mechanical and Aerospace Engineering,Monash University,Melbourne,Victoria 3800,Austral
国内会议
上海
英文
1-19
2016-11-04（万方平台首次上网日期，不代表论文的发表时间）