One-step sonochemical synthesis of NiMn-LDH for supercapacitors and overall water splitting

被引：54
作者：
Baig, Mutawara Mahmood [1 ]
Gul, Iftikhar Hussain [1 ]
Ahmad, Rabia [2 ]
Baig, Sherjeel Mahmood [2 ]
Khan, Muhammad Zarrar [1 ]
Iqbal, Naseem [2 ]
机构：
[1] Natl Univ Sci & Technol NUST, Sch Chem & Mat Engn SCME, Dept Mat Engn, Elect & Magnet Mat Lab, Islamabad, Pakistan
[2] Natl Univ Sci & Technol NUST, US Pakistan Ctr Adv Studies Energy USPCAS E, Islamabad, Pakistan
来源：
JOURNAL OF MATERIALS SCIENCE | 2021年 / 56卷 / 33期
关键词：
LAYERED DOUBLE HYDROXIDES; METAL-ORGANIC FRAMEWORK; ULTRASOUND-ASSISTED SYNTHESIS; ELECTRODE MATERIAL; INTERCALATED ANIONS; ENERGY-STORAGE; TI3C2; MXENE; NANOSHEETS; IRRADIATION; CAVITATION;
D O I：
10.1007/s10853-021-06431-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Transition metals are attracting numerous interests for their substantial applications in supercapacitors and as non-noble metal electrocatalyst for overall water splitting. Herein, the NiMn layer double hydroxide (NiMn-LDH) is developed using the sonochemical route at different reaction times, which act as a multifunctional electrode for supercapacitors and overall water splitting. The capacitance of layer double hydroxide (LDH) synthesized at 4 h (NiMn-LDH-4 h) of reaction time was found to be 527 F g(-1) at 1 A g(-1), with 91.2% capacitance retention after 5,000 cycles at 2 A g(-1) in 6 M KOH. For hydrogen and oxygen evolution reactions, the NiMn-LDH-4 h electrode exhibits a standard of 10 mA cm(-2) at an overpotential of 120 mV and 296 mV, respectively, in 1 M KOH. Moreover, fabricated NiMn-LDH-4 h||NiMn-LDH-4 h electrolyzer for overall water splitting benchmarks 10 mA cm(-2) at 1.6 V. The superior electrochemical properties of the NiMn-LDH electrodes might be attributed to quick diffusion paths and enhanced redox reaction of NiMn-LDH nanosheets because of the high surface area.
引用
收藏
页码：18636 / 18649
页数：14
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