Biomass-derived mesopore-dominant porous carbons with large specific surface area and high defect density as high performance electrode materials for Li-ion batteries and supercapacitors

Nano Energy ◽  
2017 ◽  
Vol 36 ◽  
pp. 322-330 ◽  
Author(s):  
Jin Niu ◽  
Rong Shao ◽  
Jingjing Liang ◽  
Meiling Dou ◽  
Zhilin Li ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Performance ◽  
Electrode Materials ◽  
Defect Density ◽  
Large Specific Surface Area ◽  
Li Ion Batteries ◽  
High Defect Density ◽  
Li Ion

In-situ controlled synthesis of NiFe MOF materials with excellent electrocatalytic performances for water splitting

2021 ◽  
Vol 14 (02) ◽  
pp. 2151011
Author(s):  
Jingwen Jia ◽  
Longfu Wei ◽  
Ziting Guo ◽  
Fang Li ◽  
Changlin Yu ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Water Splitting ◽  
Specific Surface Area ◽  
High Performance ◽  
Alkaline Condition ◽  
High Porosity ◽  
Large Specific Surface Area ◽  
Electrocatalytic Performance

Metal–organic frameworks (MOFs) are the electrocatalytic materials with large specific surface area, high porosity, controllable structure and monodisperse active center, which is a promising candidate for the application of electrochemical energy conversion. However, the electrocatalytic performance of pure MOFs is seriously limited its poor conductivity and stability. In this work, high-performance electrocatalyst was fabricated through combining NiFe/MOF on nickel foam (NF) via in-situ growth strategy. Through rational control of the time and ratio in reaction precursors, we realized the effective manipulation of the growth behavior, and further investigated the electrocatalytic performance in water splitting. The catalyst presented excellent electrocatalytic performance for water splitting, with low overpotential of 260 mV in alkaline condition at a current density of 50 mA[Formula: see text], which is benefited from the large specific surface area and active sites. This study demonstrates that the rational design of NiFe MOF/NF plays a significant role in high-performance electrocatalyst.

Impact of the Specific Surface Area on the Memory Effect in Li-Ion Batteries: The Case of Anatase TiO2

2014 ◽  
Vol 4 (17) ◽  
pp. 1400829 ◽  
Author(s):  
Edyta Madej ◽  
Fabio La Mantia ◽  
Wolfgang Schuhmann ◽  
Edgar Ventosa
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Memory Effect ◽  
Specific Surface Area ◽  
Anatase Tio2 ◽  
Li Ion Batteries ◽  
Li Ion

BCN nanosheets templated by g-C3N4 for high performance capacitive deionization

2018 ◽  
Vol 6 (30) ◽  
pp. 14644-14650 ◽  
Author(s):  
Shiyong Wang ◽  
Gang Wang ◽  
Tingting Wu ◽  
Yunqi Zhang ◽  
Fei Zhan ◽  
...  
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Surface Area ◽  
Capacitive Deionization ◽  
First Time

BCN nanosheets show a pore structure with a high specific surface area and are investigated as CDI electrode materials for the first time.

scholarly journals High Level Oxygen Reduction Catalysts Derived from the Compounds of Large Specific Surface Area Pine Peel Activated Carbon and Phthalocyanine Cobalt

2021 ◽  
Author(s):  
Lei Zhao ◽  
Ziwei Lan ◽  
Junyu Su ◽  
Huazhu Liang ◽  
Jiayu Yao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Active Sites ◽  
High Performance ◽  
Metal Catalysts ◽  
Large Specific Surface Area ◽  
Composite Catalysts ◽  
Nonprecious Metal

Compared with precious metal catalysts, non-platinum catalysts have the advantages of low cost and high performance. Among them, the activated carbon (AC) with a large specific surface area (SSA) can be used as a carrier or as a carbon source of nonprecious metal/carbon system catalyst at the same time. Therefore, this paper uses cheap pine peel bio-based materials to prepare large surface area activated carbon and then compound with cobalt phthalocyanine (CoPc) to obtain a high-performance cobalt/nitrogen/carbon catalyst. The merits include AC@CoPc composite catalysts are prepared by precisely controlling the composite proportion of AC and CoPc, the atomically dispersed Co nanoparticles form and synergistically with N promote the exposure of CoNx active sites, and the Eonset of the catalyst treated with a composite proportion of AC and CoPc of 1 to 2 at 800 °C (AC@CoPc-800-1-2) is 1.01 V, which is higher than Pt/C (20 wt%) catalyst. Apart from this, the stability is 87.8% in 0.1 M KOH after 20000 s testing in compared with other AC@CoPc series catalysts and Pt/C (20 wt%) catalyst. Considering from the performance and price of the catalyst in practical application, these composite catalysts combine biomass carbon materials with phthalocyanine series, which will be widely used in the area of nonprecious metal catalysts.

Acid-based modified NiCo2O4 as high-performance supercapacitor electrode materials

2021 ◽  
pp. 2150200
Author(s):  
Wenbo Geng ◽  
Qing Wang ◽  
Jianfeng Dai ◽  
Haoran Gao
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Alkali Treatment ◽  
Treatment Method ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials

The performance of supercapacitor electrode materials was greatly affected by the specific surface area. The urchin-like NiCo2O4 was transformed into porous NiCo2O4 (AA-NiCo2O[Formula: see text] using the acid–alkali treatment method. The specific surface area of AA-NiCo2O4 was 165.0660 m2/g, which was about three times larger than that of NiCo2O4. The specific capacitance of the AA-NiCo2O4 was enhanced significantly (1700 F/g at 1 A/g), and AA-NiCo2O4 possesses good rate capacitance (1277 F/g at 10 A/g). This is mainly attributed to the larger specific surface area, fast and convenient electron–ion transport and redox reaction. Therefore, AA-NiCo2O4 is a promising high-performance supercapacitor electrode material.

Fabrication of Biomass-Derived N, S Co-doped Carbon with Hierarchically Porous Architecture for High Performance Supercapacitor

NANO ◽  
2020 ◽  
Vol 15 (07) ◽  
pp. 2050096
Author(s):  
Minhua Jiang ◽  
Xiaofang Yu ◽  
Ruirui Gao ◽  
Tao Yang ◽  
Zhaoxiu Xu ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Electrode Materials ◽  
Large Specific Surface Area ◽  
Hierarchically Porous ◽  
Porous Architecture ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Co Doped

Multi-element doped porous carbon materials are considered as one of the most promising electrode materials for supercapacitors due to their large specific surface area, abundant mesoporous structure, heteroatom doping and good conductivity. Herein, we propose a very simple and effective strategy to prepare nitrogen, sulfur co-doped hierarchical porous carbons (N-S-HPC) by one-step pyrolysis strategy. The effect of sole dopants as a precursor was a major factor in the transformation process. The optimized N-S-HPC-2 possesses a typical hierarchically porous framework (micropores, mesopores and macropores) with a large specific surface area (1284.87[Formula: see text]m2 g[Formula: see text] and N (4.63 atomic %), S (0.53 atomic %) doping. As a result, the N-S-HPC-2 exhibits excellent charge storage capacity with a high gravimetric capacitance of 360[Formula: see text]F g[Formula: see text] (1 [Formula: see text]A g[Formula: see text] in three-electrode systems and 178[Formula: see text]F g[Formula: see text] in two-electrode system and long-term cycling life with 87% retention after 10,000 cycles in KOH electrolyte.

Porous carbon nanoflakes with a high specific surface area derived from a kapok fiber for high-performance electrode materials of supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 6967-6977 ◽  
Author(s):  
Weibing Xu ◽  
Bin Mu ◽  
Aiqin Wang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Surface Area ◽  
Alkali Activation ◽  
Kapok Fiber ◽  
Carbon Nanoflakes

Well-defined porous carbon nanoflakes with a high specific surface area have been successfully prepared via pyrolytic carbonization and alkali activation treatment of an easily available kapok fiber.

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