Highly Conducting Spaced TiO₂ Nanotubes Enable Defined Conformal Coating with Nanocrystalline Nb₂O₅ and High Performance Supercapacitor Applications

Abstract

Establishing self-organized spacing between TiO nanotubes allows for highly conformal Nb O deposition that can be adjusted to optimized supercapacitive behavior.

Spaced TiO2 Nanotubes Enable Optimized Pt Atomic Layer Deposition for Efficient Photocatalytic H2 Generation

“…Differently, spaced (SP) TiO 2 nanotubular arrays that can be grown under specific anodization conditions offer a defined intertube spacing. Recently, it has been shown that spacing between NTs improves the accessibility of outer‐tube walls, and this results in better inter‐diffusion and the formation of interdigitated structures that often outperform CP tubes, even though as‐formed SP NTs have a less active surface area than conventional CP NTs …”

Seed‐Assisted Synthesis of Hierarchical α‐MnO2/Nitride TiO2 Taper Nanorod Arrays on Carbon Fiber Paper with Enhanced Supercapacitor Performance

“…The α‐MnO 2 /N‐TiO 2 /SCFP electrode delivers a high areal capacitance of 400.3 mF cm −2 at a discharged current density of 1.3 mA cm −2 , which is significantly larger than that of the α‐MnO 2 /N‐TiO 2 /CFP electrode (277.2 mF cm −2 at 1.3 mA cm −2 ). Moreover, this value is also larger than the reported N‐TiO 2 composites, such as MnO x /N‐TiO 2 /CFP (327 mF cm −2 at 0.25 mA cm −2 ), TiN@MnO 2 coaxial arrays (41 mF cm −2 at 0.12 mA cm −2 ), 1 h‐TiN x O y /MnO 2 nanoarrays (160 mF cm −2 at 0.5 mA cm −2 ), and TiO 2 /Nb 2 O 5 /NH 3 (37 mF cm −2 at 0.25 mA cm −2 ) . Meanwhile, the MnO 2 /N‐TiO 2 /SCFP electrode also demonstrates a good rate capability.…”

Recent advancements in metal organic framework based electrodes for supercapacitors

“…Their unique properties, including high power density, fast charge/discharge rate, long cycle life and environmental friendliness, make supercapacitors attractive devices for a variety of applications in energy storage such as electronic communications, the emergent electric transportation industry and aerospace [1][2][3][4][5][6][7][8][9][10].…”

“…The energy storage mechanism of supercapacitors can be generally classified into two categories: electric doublelayer capacitance (EDLC) and pseudocapacitance [1,[11][12][13][14]. EDLC is based on the physical adsorption and desorption of ions at the interface between an electrolyte and electrode.…”

“…The content is divided into three sections. (1) MOFs applied in supercapacitors. (2) MOF derivatives including porous carbons, metal oxides and metal sulfides that maintain the characteristics of MOFs, and are used to make supercapacitor electrodes.…”