Hybrid hollow spheres of carbon@CoxNi1−xMoO4 as advanced electrodes for high-performance asymmetric supercapacitors

Nanoscale ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 3281-3291 ◽  
Author(s):  
Junsheng Lin ◽  
Lei Yao ◽  
Zheling Li ◽  
Peixin Zhang ◽  
Wenhua Zhong ◽  
...  
Keyword(s):  
High Performance ◽  
Hollow Spheres ◽  
Cycling Stability ◽  
Rate Performance ◽  
Carbon Nanospheres ◽  
Asymmetric Supercapacitors ◽  
Hollow Carbon

Hollow carbon nanospheres decorated with CoxNi1−xMoO4 nanosheets showed extraordinary rate performance and cycling stability as electrodes in supercapacitors.

NiCo2S4 nanosheets decorated on nitrogen-doped hollow carbon nanospheres as advanced electrodes for high-performance asymmetric supercapacitors

2021 ◽  
Author(s):  
Bei Li ◽  
Ling Xie ◽  
Yanping Liu ◽  
Dongrui Yao ◽  
Lei Yao ◽  
...  
Keyword(s):  
High Performance ◽  
Cycling Stability ◽  
Composite Electrodes ◽  
Carbon Nanospheres ◽  
Asymmetric Supercapacitors ◽  
Transport Pathways ◽  
Nitrogen Doped ◽  
Confined Growth ◽  
Overall Performance ◽  
Hollow Carbon

Abstract Taking advantage of both Faradaic and carbonaceous materials is an efficient way to synthesize composite electrodes with enhanced performance for supercapacitors. In this study, NiCo2S4 nanoflakes were grown on the surface of nitrogen-doped hollow carbon nanospheres (NHCSs), forming a NiCo2S4/NHCS composite with a core-shell structure. This three-dimensionally confined growth of NiCo2S4 can effectively inhibit its aggregation and facilitate mass transport and charge transfer. Accordingly, the NiCo2S4/NHCS composite exhibited high cycling stability with only 9.2% capacitance fading after 10,000 cycles, outstanding specific capacitance of 902 F g−1 at 1 A g−1, and it retained 90.6% of the capacitance at 20 A g−1. Moreover, an asymmetric supercapacitor composed of NiCo2S4/NHCS and activated carbon electrodes delivered remarkable energy density (31.25 Wh kg−1 at 750 W kg−1), excellent power density (15003 W kg−1 at 21.88 Wh kg−1), and satisfactory cycling stability (13.4% capacitance fading after 5000 cycles). The outstanding overall performance is attributed to the synergistic effect of the NiCo2S4 shell and NHSC core, which endows the composite with a stable structure, high electrical conductivity, abundant active reaction sites, and short ion-transport pathways. The synthesized NiCo2S4/NHCS composite is a competitive candidate for the electrodes of high-performance supercapacitors.

MIL-88A@polyoxometalate microrods as an advanced anode for high-performance lithium ion batteries

CrystEngComm ◽  
2020 ◽  
Vol 22 (21) ◽  
pp. 3588-3597 ◽  
Author(s):  
Xiangchen Zhao ◽  
Guiling Niu ◽  
Hongxun Yang ◽  
Jiaojiao Ma ◽  
Mengfei Sun ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Hydrothermal Method ◽  
High Performance ◽  
Storage Capacity ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Rate Performance ◽  
Lithium Storage ◽  
One Step

New MIL-88A@polyoxometalates microrods have been constructed via a simple one-step hydrothermal method, exhibiting the improved lithium storage capacity, rate performance and cycling stability.

A three-dimensional graphene framework-enabled high-performance stretchable asymmetric supercapacitor

2018 ◽  
Vol 6 (4) ◽  
pp. 1802-1808 ◽  
Author(s):  
Ke Li ◽  
Yanshan Huang ◽  
Jingjing Liu ◽  
Mansoor Sarfraz ◽  
Phillips O. Agboola ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Three Dimensional ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Superior Cycling Stability

Three-dimensional graphene frameworks enable the development of stretchable asymmetric supercapacitors with a record high energy density of 77.8 W h kg−1, and also excellent stretchability and superior cycling stability.

Designing graphene-wrapped nanoporous CuCo2O4 hollow spheres electrodes for high-performance asymmetric supercapacitors

2017 ◽  
Vol 5 (27) ◽  
pp. 14301-14309 ◽  
Author(s):  
S. Kamari Kaverlavani ◽  
S. E. Moosavifard ◽  
A. Bakouei
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Storage Systems ◽  
Rapid Development ◽  
Hollow Spheres ◽  
Green Energy ◽  
Energy Storage Systems ◽  
Asymmetric Supercapacitors ◽  
Portable Electronics ◽  
Increasing Demand

Increasing demand for green energy storage systems, arising from the rapid development of portable electronics, has triggered tremendous research efforts for designing new or high-performance electrodes.

Facile Synthesis of Nitrogen-Doped Mesoporous Hollow Carbon Nanospheres for High-Performance Supercapacitors

2018 ◽  
Vol 5 (16) ◽  
pp. 2242-2249 ◽  
Author(s):  
Zhongbing Wang ◽  
Hongwen Qiang ◽  
Zihao Zhu ◽  
Jinpeng Liu ◽  
Chunnian Chen ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Nanospheres ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Hollow Carbon

scholarly journals Urchin-like NiCoP coated with a carbon layer as a high-performance electrode for all-solid-state asymmetric supercapacitors

2020 ◽  
Vol 1 (3) ◽  
pp. 481-494 ◽  
Author(s):  
Jingzhou Ling ◽  
Hanbo Zou ◽  
Wei Yang ◽  
Shengzhou Chen
Keyword(s):  
Solid State ◽  
High Performance ◽  
Specific Capacity ◽  
Physical Structure ◽  
Carbon Layer ◽  
Cycling Stability ◽  
High Conductivity ◽  
Asymmetric Supercapacitors ◽  
High Specific Capacity ◽  
Excellent Cycling Stability

The NiCoP@C-ULAs composite with high conductivity, abundant pores and good physical structure shows high specific capacity and excellent cycling stability.

Ultra-high performance of Li/Na ion batteries using N/O dual dopant porous hollow carbon nanocapsules as an anode

2019 ◽  
Vol 7 (18) ◽  
pp. 11117-11126 ◽  
Author(s):  
Linlin Wang ◽  
Bo Lu ◽  
Saisai Wang ◽  
Wei Cheng ◽  
Yufeng Zhao ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
High Capacity ◽  
Cycling Stability ◽  
Carbon Nanocapsules ◽  
Hollow Carbon ◽  
Sodium Storage ◽  
Hollow Carbon Nanocapsules

N/O dual dopant porous carbon nanocapsules simultaneously attain ultrafast lithium and sodium storage with both a high capacity and an ultralong cycling stability.

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