N-doped hollow carbon spheres intercalated graphene film induced macroporous frameworks for ultrahigh volumetric energy density supercapacitor

2019 ◽  
Vol 785 ◽  
pp. 374-381 ◽  
Author(s):  
Haoting Niu ◽  
Bifu Luo ◽  
Na Xin ◽  
Yu Liu ◽  
Weidong Shi
Keyword(s):  
Energy Density ◽  
Graphene Film ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

MoSe2/N-Doped Hollow Carbon Spheres Host for Rechargeable Na-Se batteries

2021 ◽  
Author(s):  
Fengping Xiao ◽  
Peng Hu ◽  
Yanni Wu ◽  
Qing Tang ◽  
Nilesh Shinde ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Storage Systems ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Sodium-selenium (Na-Se) batteries are promising alternatives to Lithium-ion batteries for energy storage systems owing to their high energy density and natural abundance of Na resources. However, their drawbacks of low...

Multiradical-stabilized hollow carbon spheres as a pressure-resistant cathode for fast lithium/sodium storage with excellent performance

2020 ◽  
Vol 8 (18) ◽  
pp. 8875-8882
Author(s):  
Chengyi Lu ◽  
Guang Pan ◽  
Zhaoyong Mao ◽  
Liangwei Shi ◽  
Qiaogao Huang ◽  
...  
Keyword(s):  
Energy Density ◽  
Carbon Spheres ◽  
Working Ability ◽  
Excellent Performance ◽  
Underwater Robots ◽  
Important Approach ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Sodium Storage

Improving the energy density of pressure-tolerant batteries is an important approach to improving the working ability of underwater robots.

Phenylenediamine-formaldehyde chemistry derived N-doped hollow carbon spheres for high-energy-density supercapacitors

2021 ◽  
Vol 32 (1) ◽  
pp. 184-189
Author(s):  
Ming Xu ◽  
Yuheng Liu ◽  
Qiang Yu ◽  
Shihao Feng ◽  
Liang Zhou ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

MOFs-derived Co9S8-embedded graphene/hollow carbon spheres film with macroporous frameworks for hybrid supercapacitors with superior volumetric energy density

2019 ◽  
Vol 7 (14) ◽  
pp. 8503-8509 ◽  
Author(s):  
Haoting Niu ◽  
Yong Zhang ◽  
Yu Liu ◽  
Bifu Luo ◽  
Na Xin ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Materials ◽  
Carbon Spheres ◽  
Hybrid Supercapacitors ◽  
Electrons And Ions ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Electrode materials with macroporous structures have desirable structural advantages, which can provide excellent reaction sites for electrons and ions.

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

Recent progress on the design of hollow carbon spheres to host sulfur in room-temperature sodium–sulfur batteries

2020 ◽  
Vol 35 (6) ◽  
pp. 630-645
Author(s):  
Jia-ying Yang ◽  
Hao-jie Han ◽  
Hlib Repich ◽  
Ri-cheng Zhi ◽  
Chang-zhen Qu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Recent Progress ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Sodium Sulfur ◽  
Hollow Carbon Spheres

Surface Polymerization and Controlled Pyrolysis: Tailorable Synthesis of Bumpy Hollow Carbon Spheres for Energy Storage

Langmuir ◽  
2021 ◽  
Vol 37 (13) ◽  
pp. 4007-4015
Author(s):  
Qianyi Tao ◽  
Zhifeng Zhu ◽  
Sunjie Ye ◽  
Gaojian Lin ◽  
Hui Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Carbon Spheres ◽  
Surface Polymerization ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres
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