Rational design of graphene/porous carbon aerogels for high-performance flexible all-solid-state supercapacitors

2014 ◽  
Vol 2 (28) ◽  
pp. 10895-10903 ◽  
Author(s):  
Hong-Fei Ju ◽  
Wei-Li Song ◽  
Li-Zhen Fan
Keyword(s):  
Solid State ◽  
Porous Carbon ◽  
High Performance ◽  
Rational Design ◽  
Electrode Materials ◽  
Carbon Aerogels ◽  
Cycle Stability ◽  
Green Process ◽  
Excellent Electrochemical Performance

Graphene/porous carbon aerogels were rationally designed by a simple green process, exhibiting excellent electrochemical performance and long-term cycle stability as the electrode materials in flexible all-solid-state supercapacitors.

Hierarchically porous carbon black/graphene hybrid fibers for high performance flexible supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 50112-50118 ◽  
Author(s):  
Wujun Ma ◽  
Shaohua Chen ◽  
Shengyuan Yang ◽  
Meifang Zhu
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Carbon Black ◽  
Porous Carbon ◽  
High Performance ◽  
Wet Spinning ◽  
Hybrid Fiber ◽  
Hybrid Fibers ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

Porous carbon black/reduced graphene oxide hybrid fiber was fabricated by a scalable wet-spinning method and a flexible solid-state SC with excellent electrochemical performance was assembled using the hybrid fiber.

scholarly journals Hazardous Petroleum Sludge-Derived Nitrogen and Oxygen Co-Doped Carbon Material with Hierarchical Porous Structure for High-Performance All-Solid-State Supercapacitors

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2477
Author(s):  
Xiaoyu Li ◽  
Mingyang Zhang ◽  
Zhuowei Tan ◽  
Zhiqiang Gong ◽  
Peikun Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Porous Structure ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Hierarchical Porous Structure ◽  
Petroleum Sludge ◽  
Synthesis Strategy ◽  
Hierarchical Porous ◽  
Co Doped

Rational design and sustainable preparation of high-performance carbonaceous electrode materials are important to the practical application of supercapacitors. In this work, a cost-effective synthesis strategy for nitrogen and oxygen co-doped porous carbon (NOC) from petroleum sludge waste was developed. The hierarchical porous structure and ultra-high surface area (2514.7 m2 g−1) of NOC electrode materials could provide an efficient transport path and capacitance active site for electrolyte ions. The uniform co-doping of N and O heteroatoms brought enhanced wettability, electrical conductivity and probably additional pseudo-capacitance. The as-obtained NOC electrodes exhibited a high specific capacitance (441.2 F g−1 at 0.5 A g−1), outstanding rate capability, and cycling performance with inconspicuous capacitance loss after 10,000 cycles. Further, the assembled all-solid-state MnO2/NOC asymmetrical supercapacitor device (ASC) could deliver an excellent capacitance of 119.3 F g−1 at 0.2 A g−1 under a wide potential operation window of 0–1.8 V with flexible mechanical stability. This ASC device yielded a superior energy density of 53.7 W h kg−1 at a power density of 180 W kg−1 and a reasonable cycling life. Overall, this sustainable, low-cost and waste-derived porous carbon electrode material might be widely used in the field of energy storage, now and into the foreseeable future.

High-performance all solid-state micro-supercapacitor based on patterned photoresist-derived porous carbon electrodes and an ionogel electrolyte

2014 ◽  
Vol 2 (21) ◽  
pp. 7997-8002 ◽  
Author(s):  
Shuang Wang ◽  
Ben Hsia ◽  
Carlo Carraro ◽  
Roya Maboudian
Keyword(s):  
Solid State ◽  
Specific Energy ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Electrodes ◽  
Term Stability ◽  
Long Term Stability ◽  
Porous Carbon Electrodes ◽  
High Specific Energy

An all solid-state micro-supercapacitor is fabricated using patterned photoresist-derived porous carbon electrodes and an ionogel electrolyte. Excellent long-term stability and high specific energy are obtained.

Enhanced electrochemical performance of sulfur on Y2O3-modified porous carbon aerogels for high performance lithium–sulfur batteries

2017 ◽  
Vol 41 (21) ◽  
pp. 12726-12735 ◽  
Author(s):  
Zhongqiang Ding ◽  
Xueliang Li ◽  
Pei Zhang ◽  
Jingjian Yu ◽  
Yang Hua
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Aerogels ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Enhanced Electrochemical Performance ◽  
Lithium Sulfur

Ultrafine Y2O3modified carbon aerogels with S loading were successfully prepared and exhibit excellent electrochemical performance.

3D porous binary-heteroatom doped carbon nanosheet/electrochemically exfoliated graphene hybrids for high performance flexible solid-state supercapacitors

2018 ◽  
Vol 6 (18) ◽  
pp. 8750-8756 ◽  
Author(s):  
Yuxi Liu ◽  
Xiaoming Qiu ◽  
Xiaobin Liu ◽  
Yongchang Liu ◽  
Li-Zhen Fan
Keyword(s):  
Solid State ◽  
Specific Surface ◽  
Surface Area ◽  
Functional Groups ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Surface Area ◽  
Exfoliated Graphene ◽  
Sulfur Containing

3D porous carbon nanosheet/electrochemically exfoliated graphene hybrids with abundant nitrogen- and sulfur-containing functional groups and high specific surface area were prepared and evaluated as electrode materials.

scholarly journals Nanowrinkled Carbon Aerogels Embedded with FeNx Sites as Effective Oxygen Electrodes for Rechargeable Zinc-Air Battery

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Ting He ◽  
Bingzhang Lu ◽  
Yang Chen ◽  
Yong Wang ◽  
Yaqiang Zhang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Rational Design ◽  
Single Atom ◽  
Carbon Aerogels ◽  
Highly Active ◽  
Structural Distortions ◽  
Oxygen Electrodes ◽  
A Minor ◽  
X Ray Absorption

Rational design of single-metal atom sites in carbon substrates by a flexible strategy is highly desired for the preparation of high-performance catalysts for metal-air batteries. In this study, biomass hydrogel reactors are utilized as structural templates to prepare carbon aerogels embedded with single iron atoms by controlled pyrolysis. The tortuous and interlaced hydrogel chains lead to the formation of abundant nanowrinkles in the porous carbon aerogels, and single iron atoms are dispersed and stabilized within the defective carbon skeletons. X-ray absorption spectroscopy measurements indicate that the iron centers are mostly involved in the coordination structure of FeN4, with a minor fraction (ca. 1/5) in the form of FeN3C. First-principles calculations show that the FeNx sites in the Stone-Wales configurations induced by the nanowrinkles of the hierarchically porous carbon aerogels show a much lower free energy than the normal counterparts. The resulting iron and nitrogen-codoped carbon aerogels exhibit excellent and reversible oxygen electrocatalytic activity, and can be used as bifunctional cathode catalysts in rechargeable Zn-air batteries, with a performance even better than that based on commercial Pt/C and RuO2 catalysts. Results from this study highlight the significance of structural distortions of the metal sites in carbon matrices in the design and engineering of highly active single-atom catalysts.

Flower-like bimetal Ni/Co based metal-organic-framework materials with adjustable components toward high performance solid-state supercapacitors

2021 ◽  
Author(s):  
fuyong Ren ◽  
Yajun Ji ◽  
Fei Chen ◽  
Yiyi Qian ◽  
Jingjing Tian ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Framework ◽  
Framework Materials ◽  
Excellent Electrochemical Performance ◽  
Metal Organic ◽  
Organic Framework

The design and fabrication of electrode materials with excellent electrochemical performance are the key measures to improve the energy density of device. Since cobalt based materials have excellent conductivity and...

Designed synthesis of nickel–cobalt-based electrode materials for high-performance solid-state hybrid supercapacitors

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1921-1938 ◽  
Author(s):  
Liu Yang ◽  
Xintong Lu ◽  
Shihao Wang ◽  
Jiansen Wang ◽  
Xiaohui Guan ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
Hybrid Supercapacitors ◽  
Nickel Cobalt ◽  
Excellent Electrochemical Performance ◽  
Designed Synthesis

Schematic descriptions for the formation of CoNi2S4, NiCo-LDH, and NiO/Co3O4 and the excellent electrochemical performance of CoNi2S4.

scholarly journals 3-Dimensional Porous Carbon with High Nitrogen Content Obtained from Longan Shell and Its Excellent Performance for Aqueous and All-Solid-State Supercapacitors

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 808 ◽  
Author(s):  
Yuhao Liu ◽  
Xiaoxiao Qu ◽  
Guangxu Huang ◽  
Baolin Xing ◽  
Fengmei Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Rate Capability ◽  
Value Added ◽  
Koh Activation ◽  
Electrochemical Performances ◽  
High Porosity ◽  
3 Dimensional

Three-dimensional porous carbon is considered as an ideal electrode material for supercapacitors (SCs) applications owing to its good conductivity, developed pore structure, and excellent connectivity. Herein, using longan shell as precursor, 3-dimensional porous carbon with abundant and interconnected pores and moderate heteroatoms were obtained via simple carbonization and potassium hydroxide (KOH) activation treatment. The electrochemical performances of obtained 3-dimensional porous carbon were investigated as electrode materials in symmetric SCs with aqueous and solid electrolytes. The optimized material that is named after longan shell 3-dimensional porous carbon 800 (LSPC800) possesses high porosity (1.644 cm3 g−1) and N content (1.14 at %). In the three-electrode measurement, the LSPC800 displays an excellent capacitance value of 359 F g−1. Besides, the LSPC800 also achieves splendid specific capacitance (254 F g−1) in the two electrode system, while the fabricated SC employing 1 M Li2SO4 as electrolyte acquires ultrahigh power density (15930.38 W kg−1). Most importantly, LSPC800 electrodes are further applied into the SC adopting the KOH/polyvinyl alcohol (PVA) gel electrolyte, which reaches up to an outstanding capacitance of 313 F g−1 at 0.5 A g−1. In addition, for the all-solid-state SC, its rate capability at 50 A g−1 is 72.73% and retention at the 10,000th run is 93.64%. Evidently, this work is of great significance to the simple fabrication of 3-dimensional porous carbon and further opens up a way of improving the value-added utilization of biomass materials, as well as proving that the biomass porous carbons have immense potential for high-performance SCs application.

Rational Design of Quasi Zero-Strain NCM Cathode Materials for Minimizing Volume Change Effects in All-Solid-State Batteries

2019 ◽  
Author(s):  
Florian Strauss ◽  
Lea de Biasi ◽  
A-Young Kim ◽  
Jonas Hertle ◽  
Simon Schweidler ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Cathode Materials ◽  
Rational Design ◽  
Electrode Materials ◽  
Cycling Performance ◽  
Mechanical Degradation ◽  
Volume Changes ◽  
Solid State Batteries ◽  
All Solid State Batteries

Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with the goal of substituting conventional Li-ion battery (LIB) technology. As known from liquid electrolyte based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation due to particle fracture, among others. Unlike solid electrolytes, liquid electrolytes are somewhat capable of accommodating morphological changes. In SSBs, the rigidity of the materials used typically leads to adverse contact loss at the interfaces of cathode material and solid electrolyte during cycling. Hence, designing zero- or low-strain electrode materials for application in next-generation SSBs is desirable. In the present work, we report on novel Co-rich NCMs, NCM361 (60% Co) and NCM271 (70% Co), showing minor volume changes up to 4.5 V vs Li<sup>+</sup>/Li, as determined by <i>operando</i> X-ray diffraction and pressure measurements of LIB pouch and pelletized SSB cells, respectively. Both cathode materials exhibit good cycling performance when incorporated into SSB cells using argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl solid electrolyte, albeit their morphology and secondary particle size have not yet been optimized.

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