N-Doped Hollow Carbon Tubes Derived N-HCTs@NiCo2O4 as Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc-Air Batteries

2021 ◽  
Author(s):  
DongJu Fu ◽  
ZiYue Zhu ◽  
Jianjun Chen ◽  
LiQiang Ye ◽  
XinRui Song ◽  
...  
Keyword(s):  
Hollow Carbon ◽  
Hollow Carbon Tubes ◽  
Zinc Air Batteries

3D heterogeneous CTF@TiO2/Bi2WO6/Au hybrid supported by hollow carbon tubes and its efficient photocatalytic performance in the UV-vis range

2020 ◽  
Vol 7 (7) ◽  
pp. 2061-2072 ◽  
Author(s):  
Aiqin Gao ◽  
Ju Wang ◽  
Huanghuang Chen ◽  
Aiqin Hou ◽  
Kongliang Xie
Keyword(s):  
Photocatalytic Performance ◽  
Visible Range ◽  
Electron Hole ◽  
Hollow Carbon ◽  
Hollow Carbon Tubes

The 3D heterogeneous CTF@TiO2/Bi2WO6/Au hybrid broadens the absorption over the entire visible range and improves electron–hole separation.

Dual active nitrogen doped hierarchical porous hollow carbon nanospheres as an oxygen reduction electrocatalyst for zinc–air batteries

Nanoscale ◽  
2017 ◽  
Vol 9 (35) ◽  
pp. 13257-13263 ◽  
Author(s):  
Jiawei Zhu ◽  
Huang Zhou ◽  
Chengtian Zhang ◽  
Jian Zhang ◽  
Shichun Mu
Keyword(s):  
Oxygen Reduction ◽  
Carbon Nanospheres ◽  
Active Nitrogen ◽  
Energy Devices ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hollow Carbon ◽  
Zinc Air Batteries ◽  
Electrochemical Energy

Advanced dual active N-doped hollow carbon nanospheres possess superior ORR performance and can be applied in practical electrochemical energy devices.

Light-weight 3D Co–N-doped hollow carbon spheres as efficient electrocatalysts for rechargeable zinc–air batteries

Nanoscale ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 10412-10419 ◽  
Author(s):  
Shengmei Chen ◽  
Junye Cheng ◽  
Longtao Ma ◽  
Shanke Zhou ◽  
Xiuwen Xu ◽  
...  
Keyword(s):  
Light Weight ◽  
Carbon Spheres ◽  
Facile Synthesis ◽  
Co Doping ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Zinc Air Batteries

Facile synthesis of Co–N-doped hollow carbon spheres for rechargeable zinc–air batteries and the effect of their Co doping contents on ORR performance.

1D N-doped hierarchically porous hollow carbon tubes derived from a supramolecular template as metal-free electrocatalysts for a highly efficient oxygen reduction reaction

2018 ◽  
Vol 6 (15) ◽  
pp. 6212-6219 ◽  
Author(s):  
Lei Zhao ◽  
Xu-Lei Sui ◽  
Qing-Yan Zhou ◽  
Jia-Zhan Li ◽  
Jing-Jia Zhang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free ◽  
N Doping ◽  
Supramolecular Template ◽  
Hollow Carbon ◽  
Hollow Carbon Tubes ◽  
Nitrogen Doped Carbon

1D hollow nitrogen-doped carbon tubes (h-NCTs) were fabricated through a supramolecular template-derived approach and employed as the structure-guiding template, porogen and nitrogen source for in situ N-doping.

Enhanced catalytic activity of low-Pt content nanocatalysts supported on hollow carbon spheres for the ORR in alkaline media

MRS Advances ◽  
2020 ◽  
Vol 5 (57-58) ◽  
pp. 2961-2972
Author(s):  
P.C. Meléndez-González ◽  
E. Garza-Duran ◽  
J.C. Martínez-Loyola ◽  
P. Quintana-Owen ◽  
I.L. Alonso-Lemus ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Anion Exchange ◽  
Average Particle Size ◽  
Synthesis Method ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Average Particle ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

In this work, low-Pt content nanocatalysts (≈ 5 wt. %) supported on Hollow Carbon Spheres (HCS) were synthesized by two routes: i) colloidal conventional polyol, and ii) surfactant-free Bromide Anion Exchange (BAE). The nanocatalysts were labelled as Pt/HCS-P and Pt/HCS-B for polyol and BAE, respectively. The physicochemical characterization of the nanocatalysts showed that by following both methods, a good control of chemical composition was achieved, obtaining in addition well dispersed nanoparticles of less than 3 nm TEM average particle size (d) on the HCS. Pt/HCS-B contained more Pt0 species than Pt/HCS-P, an effect of the synthesis method. In addition, the structure of the HCS remains more ordered after BAE synthesis, compared to polyol. Regarding the catalytic activity for the Oxygen Reduction Reaction (ORR) in 0.5 M KOH, Pt/HCS-P and Pt/HCS-B showed a similar performance in terms of current density (j) at 0.9 V vs. RHE than the benchmark commercial 20 wt. % Pt/C. However, Pt/HCS-P and Pt/HCS-B demonstrated a 6 and 5-fold increase in mass catalytic activity compared to Pt/C, respectively. A positive effect of the high specific surface area of the HCS and its interactions with metal nanoparticles and electrolyte, which promoted the mass transfer, increased the performance of Pt/HCS-P and Pt/HCS-B. The high catalytic activity showed by Pt/HCS-B and Pt/HCS-P for the ORR, even with a low-Pt content, make them promising cathode nanocatalysts for Anion Exchange Membrane Fuel Cells (AEMFC).

Synthesis and Mechanism of Micron-level Hollow Carbon Rosary Structures

2011 ◽  
Vol 26 (2) ◽  
pp. 139-144
Author(s):  
Tao YANG ◽  
Ying-Chun ZHU ◽  
Huo-Fei QIAN ◽  
Jian-Hui YUAN ◽  
Fang-Fang XU
Keyword(s):  
Hollow Carbon
Sign in / Sign up

Export Citation Format

Share Document