scholarly journals Integration of Porous Carbon Nanowrinkles into Carbon Micropost Array for Microsupercapacitors

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Shuang Xi ◽  
Ying Liu ◽  
Yinlong Zhu ◽  
Yutu Yang
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Elastic Moduli ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Raw Material ◽  
Electrochemical Performances ◽  
Discharge Capacitance ◽  
On Chip ◽  
Enhanced Electrochemical Performance

Porous carbon nanowrinkles (PCW) coated on carbon micropost (CMP) arrays were successfully fabricated via three-step process, which took advantages of the large difference in elastic moduli between PCW and the raw material of CMP. The effect of nanowrinkle integration on the electrochemical performances was investigated, showing an improved electrochemical performance. The electrode also shows excellent cycling stability, which retains 84% of its initial discharge capacitance after 1700 cycles with >90% Coulombic efficiency. This enhanced electrochemical performance is ascribed to the synergistic effect of enlarged surface area and porous structure of PCW. The obtained PCW/CMP compositing electrode with the advantages of low cost and easy scaling-up has great potential for on-chip supercapacitors.

N-doped porous carbon derived from walnut shells with enhanced electrochemical performance for supercapacitor

2019 ◽  
Vol 12 (03) ◽  
pp. 1950042 ◽  
Author(s):  
Yunfeng Wang ◽  
Honghui Jiang ◽  
Shewen Ye ◽  
Jiaming Zhou ◽  
Jiahao Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Porous Carbon ◽  
Low Cost ◽  
High Specific Capacitance ◽  
Cycling Stability ◽  
Electrochemical Performances ◽  
Walnut Shells ◽  
Electrochemical Cycling ◽  
Elemental Doping

As the low-cost, natural multi-component for elemental doping and environment-friendly characteristics, biomass-derived porous carbon for energy storage attracts intense attention. Herein, walnut shells-based porous carbon has been obtained through carbonization, hydrothermal and activation treatment. The corresponding porous carbon owns superior electrochemical performances with specific capacitance reaching up to 462[Formula: see text]F[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text], and shows excellent cycling stability (5000 cycles, [Formula: see text]94.2% of capacitance retention at 10[Formula: see text]A[Formula: see text]g[Formula: see text]). Moreover, the symmetry supercapacitor achieves high specific capacitance (197[Formula: see text]F[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text]), relevant electrochemical cycling stability (5000 cycles, 89.2% of capacitance retention at 5[Formula: see text]A[Formula: see text]g[Formula: see text]) and high power/energy density (42.8[Formula: see text]W[Formula: see text]h[Formula: see text]kg[Formula: see text] at 1249[Formula: see text]W[Formula: see text]kg[Formula: see text]). Therefore, the facile synthesis approach and superb electrochemical performance ensure that the walnut shells-derived porous carbon is a promising electrode material candidate for supercapacitors.

Separator modified by Ketjen black for enhanced electrochemical performance of lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 13680-13685 ◽  
Author(s):  
Di Zhao ◽  
Xinye Qian ◽  
Lina Jin ◽  
Xiaolong Yang ◽  
Shanwen Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Side ◽  
Electrochemical Performances ◽  
Lithium Sulfur Batteries ◽  
Enhanced Electrochemical Performance ◽  
Lithium Sulfur

A routine separator modified by a Ketjen black (KB) layer on the cathode side has been investigated to improve the electrochemical performances of Li–S batteries.

ZnCl2 regulate flax-based porous carbon fiber for long cycle stability supercapacitors

2021 ◽  
Author(s):  
Gaigai Duan ◽  
Luying Zhao ◽  
Lian Chen ◽  
Feng Wang ◽  
Shuijian He ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Electrochemical Performance ◽  
Porous Carbon ◽  
Low Cost ◽  
Flax Fiber ◽  
Cycle Stability ◽  
Long Cycle

The flax fiber with abundant sources and low cost is an excellent precursor of carbon fiber for supercapacitor. At present, it is very attractive designing high electrochemical performance electrode via...

Nano-size porous carbon spheres as a high-capacity anode with high initial coulombic efficiency for potassium-ion batteries

2020 ◽  
Vol 5 (5) ◽  
pp. 895-903 ◽  
Author(s):  
Hehe Zhang ◽  
Chong Luo ◽  
Hanna He ◽  
Hong-Hui Wu ◽  
Li Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Potassium Ion ◽  
Carbon Spheres ◽  
Hard Carbon ◽  
Porous Carbon Spheres ◽  
Nano Size ◽  
Initial Coulombic Efficiency

An anode of hard carbon spheres with both small size and a porous structure enables superior electrochemical performance of potassium-ion batteries.

S-doped porous carbon confined SnS nanospheres with enhanced electrochemical performance for sodium-ion batteries

2018 ◽  
Vol 6 (37) ◽  
pp. 18286-18292 ◽  
Author(s):  
Yaping Wang ◽  
Yifang Zhang ◽  
Junrong Shi ◽  
Anqiang Pan ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Large Specific Surface Area ◽  
Hollow Nanospheres ◽  
Enhanced Electrochemical Performance

S-doped porous carbon confined SnS hollow nanospheres have a unique structure and large specific surface area and exhibit improved electrochemical performance.

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