Synthesis and water oxidation electrocatalytic and electrochromic behaviours of mesoporous nickel oxide thin film electrodes

Abstract

A molten salt assisted self-assembly method has been employed to produce mesoporous nickel oxide thin films that have a large surface area, efficient water oxidation electrocatalytic performance and good electrochromic properties.

Temperature-Controlled Crystal Size of Wide Band Gap Nickel Oxide and Its Application in Electrochromism

“…As one of the rare p-type semiconductors in transition metal oxides, nickel oxide has a stable band gap and excellent electrochromic properties [ 1 ]. As a new functional material, NiO has applications in many fields, such as a hole-transporting layer in solar cells [ 2 , 3 ], as a p-type transparent semiconductor [ 4 , 5 ], and as an electrochromic layer or an ion storage layer in electrochromic devices [ 6 , 7 , 8 ]. An electrochromic device (ECD) can adjust the modulating optical transmittance in the visible light region through ion implantation and extraction in response to the switching of an externally applied potential [ 9 , 10 ].…”

Electrochromic Devices Based on Tungsten Oxide and Nickel Oxide: a Review

“…同 WO3 的制备方法类似，NiO 的制备主要有旋 涂 [44] 、水热 [45][46] 、溶胶-凝胶 [47] 、电沉积 [48] 和溅射 [49] 等方法。严辉等 [50] 采用溶胶-凝胶法制备了 NiO 薄膜，并研究了退火温度对 NiO 薄膜的影响，在 350 ℃退火温度下 NiO 薄膜具有 50.7%的透过率调 制范围和 71.4 cm 2 /C 的着色效率。李垚等 [51] 通过连 续改变磁控溅射时的基底温度，制备了一种晶体结 构从有序到无序连续变化的 NiO 薄膜， 如图 5 所示， 这种 NiO 薄膜很好地兼顾了优异的 EC 性能和良好 的循环稳定性。 图 5 结晶度梯度变化的 NiO 薄膜和着褪色态照片 [51] Fig . 5 Schematic of the crystallinity gradient in NiO film and photos of NiO film in colored and bleached state [51]…”

Modification of Mesoporous LiMn2O4 and LiMn2−xCoxO4 by SILAR Method for Highly Efficient Water Oxidation Electrocatalysis

“…The MASA process is a more applicable method to produce disordered mesoporous transition metal oxides of metals that do not have alkoxide precursors; the metal precursors used in this process are usually metal nitrate, metal acetate, or metal chloride salts. [24][25][26][27] In the MASA process, a transition metal salt that has low melting point (such as first raw transition metal nitrates) or high solubility (such as most lithium salts) could be used as a solvent to assemble surfactant molecules into a lyotropic liquid crystalline mesophase. [28][29][30][31] Salt is in a molten phase in the mesophase (confined nanospace in hydrophilic domains) due to nanospace effect (NE).…”