scholarly journals Heteroatom-doped hollow carbon spheres made from polyaniline as an electrode material for supercapacitors

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 15868-15873 ◽  
Author(s):  
Haiyan Liu ◽  
Mei Han ◽  
Jinzong Zuo ◽  
Xuexiang Deng ◽  
Wenxue Lu ◽  
...  
Keyword(s):  
Electrode Material ◽  
Hollow Spheres ◽  
Carbon Spheres ◽  
One Pot ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

In this work, novel heteroatom-doped hollow carbon spheres (HHCSs) were prepared via the carbonization of polyaniline hollow spheres (PHSs), which were synthesized by one-pot polymerization.

Nitrogen-doped hollow carbon spheres with a wrinkled surface: their one-pot carbonization synthesis and supercapacitor properties

2016 ◽  
Vol 52 (78) ◽  
pp. 11693-11696 ◽  
Author(s):  
Lei Liu ◽  
Shi-Da Xu ◽  
Qing Yu ◽  
Feng-Yun Wang ◽  
Hui-Ling Zhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Core Shell ◽  
Carbon Spheres ◽  
Melamine Formaldehyde ◽  
One Pot ◽  
Nitrogen Doped ◽  
Wrinkled Surface ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Nitrogen-doped hollow carbon spheres with a wrinkled surface were synthesized through direct pyrolysis of core–shell structured graphene oxide–resol@melamine formaldehyde composites.

scholarly journals Hierarchical NiS/N-doped carbon composite hollow spheres with excellent supercapacitor performance

2017 ◽  
Vol 5 (40) ◽  
pp. 21257-21265 ◽  
Author(s):  
Tao Liu ◽  
Chuanjia Jiang ◽  
Bei Cheng ◽  
Wei You ◽  
Jiaguo Yu
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Hollow Spheres ◽  
Carbon Composite ◽  
Carbon Spheres ◽  
Excellent Electrochemical Performance ◽  
Supercapacitor Performance ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

The synthesized NiS nanosheets anchored on N-doped hollow carbon spheres (NHCSs) exhibit excellent electrochemical performance as electrode materials for supercapacitors.

Encapsulation of selenium sulfide in double-layered hollow carbon spheres as advanced electrode material for lithium storage

Nano Research ◽  
2016 ◽  
Vol 9 (12) ◽  
pp. 3725-3734 ◽  
Author(s):  
Hongwei Zhang ◽  
Liang Zhou ◽  
Xiaodan Huang ◽  
Hao Song ◽  
Chengzhong Yu
Keyword(s):  
Electrode Material ◽  
Carbon Spheres ◽  
Lithium Storage ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Selenium Sulfide

Nanoporous nitrogen-doped graphitic carbon hollow spheres with enhanced electrochemical properties

2021 ◽  
Vol 5 (20) ◽  
pp. 7645-7653
Author(s):  
Partha Bairi ◽  
Kausik Sardar ◽  
Madhupriya Samanta ◽  
Kausik Chanda ◽  
Kalyan Kumar Chattopadhyay
Keyword(s):  
Electrochemical Properties ◽  
Oxygen Reduction ◽  
Nitrogen Doping ◽  
Hollow Spheres ◽  
Graphitic Carbon ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
Reduction Activity ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

The direct pyrolysis of nanostructured poly(N-methylaniline) (PNMA) produced nanoporous hollow carbon spheres with a high atomic percentage of nitrogen doping, and these displayed enhanced oxygen reduction activity and supercapacitive properties.

Porous hollow carbon spheres for electrode material of supercapacitors and support material of dendritic Pt electrocatalyst

2015 ◽  
Vol 280 ◽  
pp. 30-38 ◽  
Author(s):  
Yang Fan ◽  
Pei-Fang Liu ◽  
Zhong-Yuan Huang ◽  
Tong-Wu Jiang ◽  
Kai-Li Yao ◽  
...  
Keyword(s):  
Electrode Material ◽  
Support Material ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Facile synthesis of novel bowl-like hollow carbon spheres by the combination of hydrothermal carbonization and soft templating

2017 ◽  
Vol 53 (20) ◽  
pp. 2922-2925 ◽  
Author(s):  
Zili Zhang ◽  
Mingli Qin ◽  
Baorui Jia ◽  
Hongzhou Zhang ◽  
Haoyang Wu ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Hydrothermal Carbonization ◽  
Template Method ◽  
Carbon Spheres ◽  
Facile Synthesis ◽  
Soft Templating ◽  
New Strategy ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

A new strategy to synthesize novel bowl-like hollow spheres by the combination of hydrothermal carbonization and an emulsion template method was presented.

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).

N-doped hierarchical porous hollow carbon spheres with multi-cavities for high performance Na-ion storage

2021 ◽  
Vol 506 ◽  
pp. 230170
Author(s):  
Lantao Liu ◽  
Xiangyu Sun ◽  
Yue Dong ◽  
Dengke Wang ◽  
Zheng Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Spheres ◽  
Hierarchical Porous ◽  
Ion Storage ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres
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