scholarly journals Carbon-based supercapacitors for efficient energy storage

2017 ◽  
Vol 4 (3) ◽  
pp. 453-489 ◽  
Author(s):  
Xuli Chen ◽  
Rajib Paul ◽  
Liming Dai
Keyword(s):  
High Performance ◽  
Carbon Nanomaterials ◽  
Electrode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Energy Sources ◽  
Great Promise ◽  
Wearable Electronics ◽  
Efficient Energy ◽  
Carbon Based

AbstractThe advancement of modern electronic devices depends strongly on the highly efficient energy sources possessing high energy density and power density. In this regard, supercapacitors show great promise. Due to the unique hierarchical structure, excellent electrical and mechanical properties, and high specific surface area, carbon nanomaterials (particularly, carbon nanotubes, graphene, mesoporous carbon and their hybrids) have been widely investigated as efficient electrode materials in supercapacitors. This review article summarizes progress in high-performance supercapacitors based on carbon nanomaterials with an emphasis on the design and fabrication of electrode structures and elucidation of charge-storage mechanisms. Recent developments on carbon-based flexible and stretchable supercapacitors for various potential applications, including integrated energy sources, self-powered sensors and wearable electronics, are also discussed.

scholarly journals Preparation and Performance of Porous Carbon Nanocomposite from Renewable Phenolic Resin and Halloysite Nanotube

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1703
Author(s):  
Xiaomeng Yang ◽  
Xiaorui Zeng ◽  
Guihong Han ◽  
Dong Sui ◽  
Xiangyu Song ◽  
...  
Keyword(s):  
High Performance ◽  
Phenolic Resin ◽  
Electrode Materials ◽  
Rate Capability ◽  
Total Pore Volume ◽  
High Energy ◽  
High Energy Density ◽  
Cycle Performance ◽  
High Porosity ◽  
Halloysite Nanotube

The growing demand for high performance from supercapacitors has inspired the development of porous nanocomposites using renewable and naturally available materials. In this work, a formaldehyde-free phenolic resin using monosaccharide-based furfural was synthesized to act as the carbon precursor. One dimensional halloysite nanotube (HNT) with high porosity and excellent cation/anion exchange capacity was mixed with the phenol-furfural resin to fabricate carbonaceous nanocomposite HNT/C. Their structure and porosity were characterized. The effects of the halloysite nanotube amount and carbonization temperature on the electrochemical properties of HNT/C were explored. HNT/C exhibited rich porosity, involving a large specific surface area 253 m2·g−1 with a total pore volume of 0.27 cm3·g−1. The electrochemical performance of HNT/C was characterized in the three-electrode system and showed enhanced specific capacitance of 146 F·g−1 at 0.2 A g−1 (68 F·g−1 for pristine carbon) in electrolyte (6 mol·L−1 KOH) and a good rate capability of 62% at 3 A g−1. It also displayed excellent cycle performance with capacitance retention of 98.5% after 500 cycles. The symmetric supercapacitors with HNT/C-1:1.5-800 electrodes were fabricated, exhibiting a high energy density of 20.28 Wh·Kg−1 at a power density of 100 W·Kg−1 in 1 M Na2SO4 electrolyte. The present work provides a feasible method for preparing composite electrode materials with a porous structure from renewable phenol-furfural resin and HNT. The excellent supercapacitance highlights the potential applications of HNT/C in energy storage.

Rational Design of Co3O4 Nano-Flowers for High Performance Supercapacitors

2020 ◽  
Vol 15 (1) ◽  
pp. 147-153
Author(s):  
Yucai Li ◽  
Yan Zhao ◽  
Dong Zhang ◽  
Shiwei Song ◽  
Jian Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Rational Design ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Facile Hydrothermal Method ◽  
Promising Application

Electrochemical performance of the electrode materials is seriously dependent on the structure and morphology of the electrode material. In this work, the nanoflower-like Co3O4 samples are successfully prepared on Ni foam via a facile hydrothermal method. The as-fabricated Co3O4 samples exhibit superior electrochemical performance with a high specific capacitance of 382.6 C g-1 at 1 A g-1 and excellent capacitance retention. In addition, the as-fabricated device presents a high energy density of 23.6 Wh kg-1 at a power density of 508.6 W kg-1 and excellent cycle stability with a capacitance retention of 81.2% after 10000 cycles, indicating a promising application as electrodes for energy storage device.

High-performance nickel cobalt sulfide materials via low-cost preparation for advanced asymmetric supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42633-42642 ◽  
Author(s):  
Shaolan Wang ◽  
Wei Li ◽  
Lipeng Xin ◽  
Ming Wu ◽  
Xiaojie Lou
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Sulfide ◽  
Asymmetric Supercapacitors ◽  
Nickel Cobalt ◽  
Good Cycling Stability ◽  
Asymmetric Device

First report the nickel cobalt sulfides electrode materials through a facile, convenient and low cost coprecipitation method. The as-fabricated asymmetric device exhibits high energy density (44.44 W h kg−1 at 954.14 W kg−1) and good cycling stability.

scholarly journals A Bifunctional-Modulated Conformal Li/Mn-Rich Layered Cathode for Fast-Charging, High Volumetric Density and Durable Li-Ion Full Cells

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Zedong Zhao ◽  
Minqiang Sun ◽  
Tianqi Wu ◽  
Jiajia Zhang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Hollow Microsphere ◽  
Lithium Ion ◽  
High Energy ◽  
Structure Design ◽  
High Energy Density ◽  
Great Promise ◽  
Energy Devices ◽  
Tap Density

AbstractLithium- and manganese-rich (LMR) layered cathode materials hold the great promise in designing the next-generation high energy density lithium ion batteries. However, due to the severe surface phase transformation and structure collapse, stabilizing LMR to suppress capacity fade has been a critical challenge. Here, a bifunctional strategy that integrates the advantages of surface modification and structural design is proposed to address the above issues. A model compound Li1.2Mn0.54Ni0.13Co0.13O2 (MNC) with semi-hollow microsphere structure is synthesized, of which the surface is modified by surface-treated layer and graphene/carbon nanotube dual layers. The unique structure design enabled high tap density (2.1 g cm−3) and bidirectional ion diffusion pathways. The dual surface coatings covalent bonded with MNC via C-O-M linkage greatly improves charge transfer efficiency and mitigates electrode degradation. Owing to the synergistic effect, the obtained MNC cathode is highly conformal with durable structure integrity, exhibiting high volumetric energy density (2234 Wh L−1) and predominant capacitive behavior. The assembled full cell, with nanographite as the anode, reveals an energy density of 526.5 Wh kg−1, good rate performance (70.3% retention at 20 C) and long cycle life (1000 cycles). The strategy presented in this work may shed light on designing other high-performance energy devices.

scholarly journals B, N Dual Doped Coral-Like Carbon Framework With Superior Pseudocapacitance and Surface Wettability

2021 ◽  
Vol 8 ◽  
Author(s):  
Lu Han ◽  
Xu Chen ◽  
Shijie Zeng ◽  
Jia Liu ◽  
Zhongli Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Storage Capacity ◽  
High Energy ◽  
Cycling Stability ◽  
Surface Wettability ◽  
High Energy Density ◽  
Carbon Framework ◽  
Energy Storage Capacity ◽  
Carbon Based

Carbon-based materials are usually considered as conventional electrode materials for supercapacitors (SCs), therefore it is meaningful to enhance supercapacitive capacity and cycling stability via rational surface structure design of carbon-based materials. The bio-inspired coral-like porous carbon structure has attracted much attention recently in that it can offer large surface area for ion accommodation and favor ions-diffusion, promoting its energy storage capacity. Herein, we designed a superiorly hydrophilic B, N dual doped coral-like carbon framework (BN-CCF) and studied its surface wettability via low-field nuclear magnetic resonance relaxation technique. The unique coral-like micro-nano structure and B, N dual doping in carbon framework can enhance its pseudocapacitance and improve surface wettability. Therefore, when used as electrodes of SCs, the BN-CCF displays 457.5 F g−1 at 0.5 A g−1, even when current density increases 20 folds, it still exhibits high capacitance retention of 66.1% and superior cycling stability. The symmetrical SCs assembled by BN-CCF electrodes show a high energy density of 14.92 Wh kg−1 (600 W kg−1). In this work, simple structural regulation with B, N dual doping and surface wettability should be considered as effective strategy to enhance energy storage capacity of carbon-based SCs.

Electrode materials based on α-NiCo(OH)2 and rGO for high performance energy storage devices

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102504-102512 ◽  
Author(s):  
J. M. Gonçalves ◽  
R. R. Guimarães ◽  
C. V. Nunes ◽  
A. Duarte ◽  
B. B. N. S. Brandão ◽  
...  
Keyword(s):  
Composite Material ◽  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Charge Discharge

Described herein is a composite material based on rGO and α-NiCo(OH)2 nanoparticles combining very fast charge/discharge processes with the high energy density of batteries, suitable for application in high performance energy storage devices.

Enabling high-performance room-temperature sodium/sulfur batteries with few-layer 2H-MoSe2 embellished nitrogen-doped hollow carbon spheres as polysulfide barrier

2021 ◽  
Author(s):  
Chunwei Dong ◽  
HongYu Zhou ◽  
Bo Jin ◽  
Wang Gao ◽  
Xingyou Lang ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Electrode Materials ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Widespread Application ◽  
Earth Abundant ◽  
Hollow Carbon ◽  
Sodium Sulfur

Room-temperature sodium/sulfur (RT-Na/S) batteries are of considerable interest for next-generation energy storage systems because of the earth-abundant electrode materials, low cost, and high energy density. However, the widespread application of...

scholarly journals Carbon-Based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 91
Author(s):  
Fitri Aulia Permatasari ◽  
Muhammad Alief Irham ◽  
Satria Zulkarnaen Bisri ◽  
Ferry Iskandar
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Quantum Confinement Effect ◽  
Graphene Quantum Dots ◽  
High Energy ◽  
Carbon Quantum Dots ◽  
High Energy Density ◽  
Research Progress ◽  
Future Challenges ◽  
Carbon Based

Carbon-based Quantum dots (C-QDs) are carbon-based materials that experience the quantum confinement effect, which results in superior optoelectronic properties. In recent years, C-QDs have attracted attention significantly and have shown great application potential as a high-performance supercapacitor device. C-QDs (either as a bare electrode or composite) give a new way to boost supercapacitor performances in higher specific capacitance, high energy density, and good durability. This review comprehensively summarizes the up-to-date progress in C-QD applications either in a bare condition or as a composite with other materials for supercapacitors. The current state of the three distinct C-QD families used for supercapacitors including carbon quantum dots, carbon dots, and graphene quantum dots is highlighted. Two main properties of C-QDs (structural and electrical properties) are presented and analyzed, with a focus on the contribution to supercapacitor performances. Finally, we discuss and outline the remaining major challenges and future perspectives for this growing field with the hope of stimulating further research progress.

scholarly journals Synthesis of Two-Dimensional Sr-Doped LaNiO3 Nanosheets with Improved Electrochemical Performance for EnergyStorage

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 155
Author(s):  
Bin Zhang ◽  
Ping Liu ◽  
Zijiong Li ◽  
Xiaohui Song
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
High Capacity ◽  
Cost Effective ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Long Term Stability ◽  
Excellent Electrochemical Performance

Designing a novel, efficient, and cost-effective nanostructure with the advantage of robust morphology and outstanding conductivity is highly promising for the electrode materials of high-performance electrochemical storage device. In this paper, a series of honeycombed perovskite-type Sr-doped LaNiO3 nanosheets with abundant porous structure were successfully synthesized by accurately controlling the Sr-doped content. The study showed that the optimal LSNO-0.4 (La0.6Sr0.4NiO3-δ) electrode exhibited excellent electrochemical performance, which showed a high capacity of 115.88 mAh g−1 at 0.6 A g−1. Furthermore, a hybrid supercapacitor device (LSNO//AC) based on LSNO-0.4 composites and activated carbon (AC) showed a high energy density of 17.94 W h kg−1, a high power density of 1600 W kg−1, and an outstanding long-term stability with 104.4% capacity retention after 16,000 cycles, showing an excellent electrochemical performance and a promising application as an electrode for energy storage.

scholarly journals Low-Carbon and Nanosheathed ZnCo2O4 Spheroids with Porous Architecture for Boosted Lithium Storage Properties

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Yudi Mo ◽  
Junchen Liu ◽  
Shuanjin Wang ◽  
Min Xiao ◽  
Shan Ren ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Low Carbon ◽  
Lithium Storage ◽  
Simple Method ◽  
Porous Architecture

Multielectronic reaction electrode materials for high energy density lithium-ion batteries (LIBs) are severely hindered by their inherent sluggish kinetics and large volume variations, leading to rapid capacity fade. Here, a simple method is developed to construct low-carbon and nanosheathed ZnCo2O4 porous spheroids (ZCO@C-5). In this micro/nanostructure, an ultrathin amorphous carbon layer (~2 nm in thickness) is distributed all over the primary nanosized ZCO particles (~20 nm in diameter), which finally self-assembles into porous core (ZCO)-shell(carbon) micron spheroids. The nanoencapsulation and macro/mesoporous architecture can not only provide facile electrolyte penetration and rapid ion/electron transfer but also better alleviate volumetric expansion effect to avoid pulverization of ZCO@C-5 spheroids during repeat charge/discharge processes. As expected, the three-dimensional porous ZCO@C-5 composites exhibit high reversible capacity of 1240 mAh g−1 cycle at 500 mA g−1, as well as excellent long-term cycling stability and rate capability. The low-carbon and nanoencapsulation strategy in this study is simple and effective, exhibiting great potential for high-performance LIBs.

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