摘要
氧化镍/氢氧化镍比容量高,来源丰富,成本低廉,环境友好,是国际上重点研究的一种新型赝电容电极材料。制约其应用的关键是其在大倍率充放电条件的电容性能。综述了大倍率高性能氧化镍/氢氧化镍超级电容薄膜电极材料工艺的研究进展,指出了各制备工艺的优缺点。在此基础上,发展了阳极电压振荡处理工艺,在镍片上获得了在电流密度为20mA/cm2时,比电容高达560mF/cm2,循环寿命超过10万次的高性能氢氧化镍超级电容薄膜电极材料。
NiO/Ni（OH）z is a promising alternative electrode material as supercapacitor due to its high specific capac- itance, natural abundance, low cost and environmental friendness. Whether it has good capacitive characteristics at high rate capability is the key to scale up its applications. It was reviewed that technologies were applied to prepare NiO/Ni（OH）2 film as supercapacitance electrode material. The merits and faults of these technologies were stated, and the key factors were listed for improving its rate capability. On basis of the above, a new technology for prepar- ing a NiO/Ni（OH）2 film on nickel substrate were developed by an anodic current oscillation method. By this novel technology, a NiO/Ni（OH）z film electrode material on nickel plate can reach an areal specific capacitance of 560 mF/cm^2 at 20 mA/cm^2 after 100000 cycles .
出处
《金属功能材料》
CAS
2014年第4期36-42,共7页
Metallic Functional Materials
基金
深圳大学教学改革研究项目(JG2012084)
广东省高等学校千百十工程培养计划(00006218)
