Highly porous graphitic carbon and Ni2P2O7 for a high performance aqueous hybrid supercapacitor

2015 ◽  
Vol 3 (43) ◽  
pp. 21553-21561 ◽  
Author(s):  
Baskar Senthilkumar ◽  
Ziyauddin Khan ◽  
Seungyoung Park ◽  
Kyoungho Kim ◽  
Hyunhyub Ko ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Rate Capability ◽  
High Energy ◽  
Maximum Energy ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Hybrid Supercapacitor ◽  
Highly Porous ◽  
Good Rate Capability

A high energy hybrid capacitor fabricated from highly porous graphitic carbon and novel electrode material Ni2P2O7 delivers a maximum energy density of 65 W h kg−1 at a power density of 800 W kg−1, good rate capability and cycling stability in an aqueous Na-ion based electrolyte.

scholarly journals Hierarchical porous graphitic carbon for high-performance supercapacitors at high temperature

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34488-34496 ◽  
Author(s):  
Chong Chen ◽  
Dengfeng Yu ◽  
Gongyuan Zhao ◽  
Lei Sun ◽  
Yinyong Sun ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
High Energy ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Cycle Life ◽  
High Energy Density ◽  
Hierarchical Porous

Developing supercapacitors with high energy density without sacrificing the power density and cycle life has attracted enormous attention.

scholarly journals Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Fuwei Liu ◽  
Luoyuan Xie ◽  
Li Wang ◽  
Wei Chen ◽  
Wei Wei ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Density ◽  
Structural Design ◽  
High Performance ◽  
Rate Capability ◽  
Cotton Yarn ◽  
Reduced Graphene ◽  
Hierarchical Porous ◽  
Good Rate Capability ◽  
Electrodes For Supercapacitors

AbstractMany hybrid electrodes for supercapacitors (SCs) are a reckless combination without proper structural design that keeps them from fulfilling their potential. Herein, we design a reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline (RGO/PEDOT/PANI) hybrid with hierarchical and porous structure for high-performance SCs, where components fully harness their advantages, forming an interconnected and conductive framework with substantial reactive sites.Thus, this hybrid achieves a high capacitance of 535 F g−1 along with good rate capability and cyclability. The planar SC based on this hybrid deliver an energy density of 26.89 Wh kg−1 at a power density of 800 W kg−1. The linear SC developed via modifying a cotton yarn with the hybrid exhibits good flexibility and structural stability, which operates normally after arbitrary deformations. This work provides a beneficial reference for developing SCs.

Rice husk-derived Mn3O4/manganese silicate/C nanostructured composites for high-performance hybrid supercapacitors

2019 ◽  
Vol 6 (10) ◽  
pp. 2788-2800 ◽  
Author(s):  
Hanmei Jiang ◽  
Yifu Zhang ◽  
Chen Wang ◽  
Qiushi Wang ◽  
Changgong Meng ◽  
...  
Keyword(s):  
Energy Density ◽  
Rice Husk ◽  
High Performance ◽  
Maximum Energy ◽  
Rice Husks ◽  
Hybrid Supercapacitor ◽  
Manganese Silicate ◽  
Nanostructured Composites ◽  
Hybrid Supercapacitors

Mn3O4/manganese silicate/C nanostructured composites were synthesized using rice husks and the hybrid supercapacitor realizes a maximum energy density of 13.3 W h kg−1 at 103.9 W kg−1 and super stability.

MOF-derived α-NiS nanorods on graphene as an electrode for high-energy-density supercapacitors

2018 ◽  
Vol 6 (9) ◽  
pp. 4003-4012 ◽  
Author(s):  
Chong Qu ◽  
Lei Zhang ◽  
Wei Meng ◽  
Zibin Liang ◽  
Bingjun Zhu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
Positive Electrode ◽  
High Energy Density ◽  
Hybrid Supercapacitor ◽  
First Time

α-NiS/rGO nanohybrids synthesized from water-refluxed Ni-MOF-74/rGO were applied as a high-performance hybrid supercapacitor positive electrode for the first time.

scholarly journals High-Energy and High-Power Pseudocapacitor–Battery Hybrid Sodium-Ion Capacitor with Na+ Intercalation Pseudocapacitance Anode

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Qiulong Wei ◽  
Qidong Li ◽  
Yalong Jiang ◽  
Yunlong Zhao ◽  
Shuangshuang Tan ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Anode Materials ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Rate Capability ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density

AbstractHigh-performance and low-cost sodium-ion capacitors (SICs) show tremendous potential applications in public transport and grid energy storage. However, conventional SICs are limited by the low specific capacity, poor rate capability, and low initial coulombic efficiency (ICE) of anode materials. Herein, we report layered iron vanadate (Fe5V15O39 (OH)9·9H2O) ultrathin nanosheets with a thickness of ~ 2.2 nm (FeVO UNSs) as a novel anode for rapid and reversible sodium-ion storage. According to in situ synchrotron X-ray diffractions and electrochemical analysis, the storage mechanism of FeVO UNSs anode is Na+ intercalation pseudocapacitance under a safe potential window. The FeVO UNSs anode delivers high ICE (93.86%), high reversible capacity (292 mAh g−1), excellent cycling stability, and remarkable rate capability. Furthermore, a pseudocapacitor–battery hybrid SIC (PBH-SIC) consisting of pseudocapacitor-type FeVO UNSs anode and battery-type Na3(VO)2(PO4)2F cathode is assembled with the elimination of presodiation treatments. The PBH-SIC involves faradaic reaction on both cathode and anode materials, delivering a high energy density of 126 Wh kg−1 at 91 W kg−1, a high power density of 7.6 kW kg−1 with an energy density of 43 Wh kg−1, and 9000 stable cycles. The tunable vanadate materials with high-performance Na+ intercalation pseudocapacitance provide a direction for developing next-generation high-energy capacitors.

Iridium coating Co nanoparticles embedded into highly porous N-doped carbon nanocubes grafted with carbon nanotubes as catalytic cathode for high-performance Li–O2 battery

2021 ◽  
Author(s):  
Huixiang Yin ◽  
Dongdong Li ◽  
Zhenzhen Chi ◽  
Qian Zhang ◽  
Xiaoqiang Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Co Nanoparticles ◽  
Highly Porous

Rechargeable Li–O2 batteries have attracted worldwide attention due to super-high energy density. However, there are still many critical challenges for Li–O2 batteries, such as huge overpotential caused by sluggish oxygen...

scholarly journals Wire-Shaped 3D-Hybrid Supercapacitors as Substitutes for Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Kyeong-Nam Kang ◽  
Ananthakumar Ramadoss ◽  
Jin-Wook Min ◽  
Jong-Chul Yoon ◽  
Deokjung Lee ◽  
...  
Keyword(s):  
Energy Density ◽  
Active Sites ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Easy Access ◽  
Nickel Wire ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Volumetric Capacitance

Abstract We report a wire-shaped three-dimensional (3D)-hybrid supercapacitor with high volumetric capacitance and high energy density due to an interconnected 3D-configuration of the electrode allowing for large number of electrochemical active sites, easy access of electrolyte ions, and facile charge transport for flexible wearable applications. The interconnected and compact electrode delivers a high volumetric capacitance (gravimetric capacitance) of 73 F cm−3 (2446 F g−1), excellent rate capability, and cycle stability. The 3D-nickel cobalt-layered double hydroxide onto 3D-nickel wire (NiCo LDH/3D-Ni)//the 3D-manganese oxide onto 3D-nickel wire (Mn3O4/3D-Ni) hybrid supercapacitor exhibits energy density of 153.3 Wh kg−1 and power density of 8810 W kg−1. The red light-emitting diode powered by the as-prepared hybrid supercapacitor can operate for 80 min after being charged for tens of seconds and exhibit excellent electrochemical stability under various deformation conditions. The results verify that such wire-shaped 3D-hybrid supercapacitors are promising alternatives for batteries with long charge–discharge times, for smart wearable and implantable devices.

Hierarchical Cu2S@NiCo-LDH double-shelled nanotube arrays with enhanced electrochemical performance for hybrid supercapacitors

2020 ◽  
Vol 8 (42) ◽  
pp. 22163-22174
Author(s):  
Ze Yuan ◽  
Haiyan Wang ◽  
Junling Shen ◽  
Pengcheng Ye ◽  
Jiqiang Ning ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Nanotube Arrays ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Enhanced Electrochemical Performance

Hierarchical Cu2S@NiCo-LDH double-shelled nanotube arrays (Cu2S@NiCo-LDH DSNAs) are prepared by a multi-step approach, and the fabricated Cu2S@NiCo-LDH DSNAs//NPC hybrid supercapacitor exhibits a high energy density and remarkable rate capability.

Electrodeposition of honeycomb-shaped NiCo2O4 on carbon cloth as binder-free electrode for asymmetric electrochemical capacitor with high energy density

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37562-37573 ◽  
Author(s):  
Yufeng An ◽  
Zhongai Hu ◽  
Bingshu Guo ◽  
Ning An ◽  
Yadi Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Density ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth ◽  
Reduced Graphene ◽  
Binder Free ◽  
Good Rate Capability

Through the matching of the honeycomb-shaped NiCo2O4/CC (HSNC) and reduced graphene oxide/carbon cloth (rGO/CC) to obtain the binder-free asymmetric electrochemical capacitor with high energy density good rate capability and excellent cycle life.

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