新型炭材料2017，Vol.32Issue(2)：116-122,7.
炭布基底上β-Ni(OH)2纳米片的水热合成及电化学性能
The hydrothermal synthesis of β-Ni(OH)2 nanoflakes on carbon cloth and their electrochemical properties
刘茜秀 1吕春祥 2李倩1
作者信息
- 1. 中国科学院山西煤炭化学研究所, 炭材料重点实验室,山西 太原030001
- 2. 中国科学院大学,北京100049
- 折叠
摘要
Abstract
Carbon cloth (CC) coated with β-Ni(OH)2 nanoflakes was prepared by a hydrothermal method using nickel nitrate, urea and ammonium fluoride as the reaction system, and was characterized by SEM, XPS and XRD.Results indicated that the acid treatment of the CC introduced more active functional groups on its surface, which was beneficial to the coating of the β-Ni(OH)2.The β-Ni(OH)2 nanoflakes were of high purity, and their formation mechanism on the CC was investigated by observing their morphology at different reaction times.It was revealed that the β-Ni(OH)2 were initially present in the form of discrete nanoparticles and nanoflakes and after 6 h formed a continuous and well-crystallized β-Ni(OH)2 nanoflake with diameter and thickness of 1 μm and 10 nm, respectively.Nanoflakes continued to form, grow and overlap and after 12 h the thickness had increased to 200 nm.The sample at 6 h had the highest specific capacitance of 815.67 F·g-1 at a current density of 1 A·g-1, and retained 98.1% of its initial capacitance after 4 000 cycles.关键词
超级电容器/氢氧化镍纳米片/炭布/水热法Key words
Supercapacitor/β-Ni(OH)2 nanoflakes/Carbon cloth/Hydrothermal synthesis分类
化学化工引用本文复制引用
刘茜秀,吕春祥,李倩..炭布基底上β-Ni(OH)2纳米片的水热合成及电化学性能[J].新型炭材料,2017,32(2):116-122,7.
