Single-step microwave mediated synthesis of the CoS2 anode material for high rate hybrid supercapacitors

2014 ◽  
Vol 2 (29) ◽  
pp. 11099-11106 ◽  
Author(s):  
S. Amaresh ◽  
K. Karthikeyan ◽  
I.-C. Jang ◽  
Y. S. Lee
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Anode Material ◽  
Metal Sulfide ◽  
Single Step ◽  
High Rate ◽  
Hybrid Supercapacitor ◽  
Lithium Ions ◽  
Hybrid Supercapacitors ◽  
Capacitor Fabrication

The energy density of a hybrid supercapacitor having CoS2 against activated carbon was increased by direct lithiation of metal sulfide before capacitor fabrication. Lithiation augmented the energy density by two-fold at all current rates and also is responsible for maintaining the capacitance retention during cycling due to the non-depletion of lithium ions in the electrolyte.

Rapid microwave-assisted synthesis of high-rate FeS2 nanoparticles anchored on graphene for hybrid supercapacitors with ultrahigh energy density

2018 ◽  
Vol 6 (30) ◽  
pp. 14956-14966 ◽  
Author(s):  
Zhiqin Sun ◽  
Huiming Lin ◽  
Feng Zhang ◽  
Xue Yang ◽  
He Jiang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Specific Capacity ◽  
High Rate ◽  
Microwave Assisted Synthesis ◽  
Ultrahigh Energy ◽  
Hybrid Supercapacitor ◽  
High Specific Capacity ◽  
Hybrid Supercapacitors ◽  
Microwave Assisted

Benefitting from the high specific capacity (793 C g−1) of the FeS2/graphene anode, an assembled all-solid-state hybrid supercapacitor device based on the FeS2/graphene anode and a Ni(OH)2@Co9S8 cathode achieves an ultrahigh energy density of up to 95.8 W h kg−1 at a power density of 949 W kg−1.

Three-dimensionally ordered porous TiNb2O7 nanotubes: a superior anode material for next generation hybrid supercapacitors

2015 ◽  
Vol 3 (32) ◽  
pp. 16785-16790 ◽  
Author(s):  
Hongsen Li ◽  
Laifa Shen ◽  
Jie Wang ◽  
Shan Fang ◽  
Yingxia Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Power Density ◽  
Anode Material ◽  
Lithium Ion ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Cycling Performances ◽  
Ordered Porous ◽  
Generation Hybrid

A novel hybrid supercapacitor is successfully constructed based on the 3D ordered porous TiNb2O7 electrode (anode) and graphene grass electrode (cathode). In combination with the advantages from the lithium ion batteries and supercapacitors, this device shows superior energy density and power density with improved cycling performances.

Electrochemical Performance of Lithium-Ion Hybrid Supercapacitors based on Activated Carbon and Nanoplatelet Li4Ti5O12 Insertion Electrode Synthesized by Nanoscission Technique

2015 ◽  
Vol 1740 ◽  
Author(s):  
Sandeep Singh ◽  
Alok C Rastogi ◽  
Fredrick Omenya ◽  
M Stanley Whittingham ◽  
Archit Lal ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrochemical Performance ◽  
Lithium Ion ◽  
Charge Transfer Resistance ◽  
Electrode Polarization ◽  
Hybrid Supercapacitor ◽  
Transfer Resistance ◽  
Hybrid Supercapacitors ◽  
Current Change ◽  
Kinetic Effects

ABSTRACTElectrochemical performance of hybrid supercapacitor (HSC) utilizing surface sculpted Li4Ti5O12 (LTO) insertion electrode having nanoplatelet-like morphology and activated carbon (AC) electrode is investigated for energy storage application. Cyclic voltammetry (CV) at variable scan rates 0.5 to 60 mV.s-1 in the 0-3.2 V range show pseusocapacitive behavior and fast rate of current change indicating rapid Faradaic kinetics. Nyquist impedance study show charge transfer resistance due to kinetic effects of electron transfer and Li+ de-intercalation process at the LTO anode. Low capacity (0.2 C-1C) charge-discharge (CD) curves show high Coulomb efficiency with marginal reduction at high 5-10 C rates due to irreversibility of adsorbed PF6 anions at the electrolyte-AC interface. Galvanostatic CD cycling tests over 50 cycles at different C-rates show decline in storage capacity due to electrode polarization effects. Reduction, broadening and shift of the Raman line at 678 cm-1 from Ti-O bonds in TiO6 octahedra after cycling indicates Li insertion reactions in functioning of hybrid supercapacitor. The hybrid supercapacitor cells have shown energy density, 29 Wh.kg-1 and power density, 350 W.kg-1.

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.

A novel Lithium/Sodium hybrid aqueous electrolyte for hybrid supercapacitors based on LiFePO4 and activated carbon

2016 ◽  
Vol 09 (06) ◽  
pp. 1642008 ◽  
Author(s):  
Yongling An ◽  
Huifang Fei ◽  
Jinkui Feng ◽  
Lijie Ci ◽  
Shenglin Xiong
Keyword(s):  
Activated Carbon ◽  
Sodium Salt ◽  
Aqueous Electrolyte ◽  
Lithium Salt ◽  
Low Cost ◽  
Hybrid Supercapacitor ◽  
Power Sources ◽  
Hybrid Supercapacitors ◽  
Hybrid Power

A novel low cost Na[Formula: see text]/Li[Formula: see text] hybrid electrolyte was proposed for hybrid supercapacitor. By partly substituting Lithium salt with Sodium salt, the Li[Formula: see text]/Na[Formula: see text] hybrid electrolyte exhibits synergic advantages of both Li[Formula: see text] and Na[Formula: see text] electrolytes. Our findings could also be applied to other hybrid power sources.

Novel zinc–iodine hybrid supercapacitors with a redox iodide ion electrolyte and B, N dual-doped carbon electrode exhibit boosted energy density

2019 ◽  
Vol 7 (42) ◽  
pp. 24400-24407 ◽  
Author(s):  
Lu Han ◽  
Hailong Huang ◽  
Junfeng Li ◽  
Zhongli Yang ◽  
Xinlu Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Electrode ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Iodide Ion

A novel high-energy-density zinc–iodine hybrid supercapacitor was designed via the introduction of a redox iodide ion electrolyte and B, N dual-doped carbon electrode.

PO43− doped Li4Ti5O12 hollow microspheres as an anode material for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (112) ◽  
pp. 92354-92360 ◽  
Author(s):  
Dian-Dian Han ◽  
Gui-Ling Pan ◽  
Sheng Liu ◽  
Xue-Ping Gao
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Hollow Microspheres ◽  
High Rate ◽  
High Rate Capability ◽  
Lithium Ions ◽  
Diffusion Paths

PO43− doped Li4Ti5O12 hollow microspheres present stable cycling stability and outstanding high-rate capability due to the slight increase in the number of diffusion paths for lithium ions by doping with large PO43− anions.

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.

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