Nitrogen-doped TiO2 nanotube anode enabling improvement of electronic conductivity for fast and long-term sodium storage

2022 ◽  
Vol 889 ◽  
pp. 161612
Author(s):  
Yanglu Qu ◽  
Shengming Zhu ◽  
Xufeng Dong ◽  
Hao Huang ◽  
Min Qi
Keyword(s):  
Electronic Conductivity ◽  
Tio2 Nanotube ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
Sodium Storage

scholarly journals Nitrogen-doped TiO2 nanotube array films with enhanced photocatalytic activity under various light sources

2010 ◽  
Vol 184 (1-3) ◽  
pp. 855-863 ◽  
Author(s):  
Yue-Kun Lai ◽  
Jian-Ying Huang ◽  
Hui-Fang Zhang ◽  
Vishnu-Priya Subramaniam ◽  
Yu-Xin Tang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Nanotube ◽  
Light Sources ◽  
Tio2 Nanotube Array ◽  
Nanotube Array ◽  
Doped Tio2 ◽  
Nitrogen Doped

scholarly journals Cu2Se Nanoparticles Encapsulated by Nitrogen-Doped Carbon Nanofibers for Efficient Sodium Storage

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 302 ◽  
Author(s):  
Le Hu ◽  
Chaoqun Shang ◽  
Eser Metin Akinoglu ◽  
Xin Wang ◽  
Guofu Zhou
Keyword(s):  
Carbon Nanofibers ◽  
Electronic Conductivity ◽  
Diffusion Path ◽  
Rate Performance ◽  
Fiber Network ◽  
Nitrogen Doped ◽  
High Theoretical Capacity ◽  
Nitrogen Doped Carbon ◽  
Sodium Storage ◽  
Large Volume Change

Cu2Se with high theoretical capacity and good electronic conductivity have attracted particular attention as anode materials for sodium ion batteries (SIBs). However, during electrochemical reactions, the large volume change of Cu2Se results in poor rate performance and cycling stability. To solve this issue, nanosized-Cu2Se is encapsulated in 1D nitrogen-doped carbon nanofibers (Cu2Se-NC) so that the unique structure of 1D carbon fiber network ensures a high contact area between the electrolyte and Cu2Se with a short Na+ diffusion path and provides a protective matrix to accommodate the volume variation. The kinetic analysis and DNa+ calculation indicates that the dominant contribution to the capacity is surface pseudocapacitance with fast Na+ migration, which guarantees the favorable rate performance of Cu2Se-NC for SIBs.

Supercapacitive performance of electrochemically doped TiO2 nanotube arrays decorated with Cu2O nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47669-47675 ◽  
Author(s):  
Yongqiang Qin ◽  
Jianfang Zhang ◽  
Yan Wang ◽  
Xia Shu ◽  
Cuiping Yu ◽  
...  
Keyword(s):  
Electrode Material ◽  
Oxygen Vacancies ◽  
Electronic Conductivity ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Supercapacitive Performance ◽  
Doped Tio2 ◽  
Cu2o Nanoparticles ◽  
Promising Electrode Material

Highly ordered TiO2 nanotube arrays (TNAs) with enhanced electronic conductivity treated by introducing oxygen vacancies have been considered to be a promising electrode material for supercapacitors.

Enhanced Field Emission Properties of Electrochemically Synthesized Self-Aligned Nitrogen-Doped TiO2 Nanotube Array Thin Films

2012 ◽  
Vol 116 (31) ◽  
pp. 16740-16746 ◽  
Author(s):  
Rajini P Antony ◽  
Tom Mathews ◽  
Kalpataru Panda ◽  
B Sundaravel ◽  
S. Dash ◽  
...  
Keyword(s):  
Thin Films ◽  
Field Emission ◽  
Tio2 Nanotube ◽  
Tio2 Nanotube Array ◽  
Nanotube Array ◽  
Doped Tio2 ◽  
Emission Properties ◽  
Nitrogen Doped ◽  
Field Emission Properties

scholarly journals Enhanced Photocatalytic Performance of Nitrogen-Doped TiO2 Nanotube Arrays Using a Simple Annealing Process

Micromachines ◽  
2018 ◽  
Vol 9 (12) ◽  
pp. 618 ◽  
Author(s):  
Phuoc Le ◽  
Le Hieu ◽  
Tu-Ngoc Lam ◽  
Nguyen Hang ◽  
Nguyen Truong ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Synergistic Effects ◽  
Annealing Process ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
N Doping

Nitrogen-doped TiO2 nanotube arrays (N-TNAs) were successfully fabricated by a simple thermal annealing process in ambient N2 gas at 450 °C for 3 h. TNAs with modified morphologies were prepared by a two-step anodization using an aqueous NH4F/ethylene glycol solution. The N-doping concentration (0–9.47 at %) can be varied by controlling N2 gas flow rates between 0 and 500 cc/min during the annealing process. Photocatalytic performance of as-prepared TNAs and N-TNAs was studied by monitoring the methylene blue degradation under visible light (λ ≥ 400 nm) illumination at 120 mW·cm−2. N-TNAs exhibited appreciably enhanced photocatalytic activity as compared to TNAs. The reaction rate constant for N-TNAs (9.47 at % N) reached 0.26 h−1, which was a 125% improvement over that of TNAs (0.115 h−1). The significant enhanced photocatalytic activity of N-TNAs over TNAs is attributed to the synergistic effects of (1) a reduced band gap associated with the introduction of N-doping states to serve as carrier reservoir, and (2) a reduced electron‒hole recombination rate.

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