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.

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 Engineering three-dimensional hybrid supercapacitors and microsupercapacitors for high-performance integrated energy storage

2015 ◽  
Vol 112 (14) ◽  
pp. 4233-4238 ◽  
Author(s):  
Maher F. El-Kady ◽  
Melanie Ihns ◽  
Mengping Li ◽  
Jee Youn Hwang ◽  
Mir F. Mousavi ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Consumer Electronics ◽  
Hybrid Supercapacitor ◽  
Active Materials ◽  
Space Applications ◽  
Hybrid Supercapacitors ◽  
And Storage

Supercapacitors now play an important role in the progress of hybrid and electric vehicles, consumer electronics, and military and space applications. There is a growing demand in developing hybrid supercapacitor systems to overcome the energy density limitations of the current generation of carbon-based supercapacitors. Here, we demonstrate 3D high-performance hybrid supercapacitors and microsupercapacitors based on graphene and MnO2 by rationally designing the electrode microstructure and combining active materials with electrolytes that operate at high voltages. This results in hybrid electrodes with ultrahigh volumetric capacitance of over 1,100 F/cm3. This corresponds to a specific capacitance of the constituent MnO2 of 1,145 F/g, which is close to the theoretical value of 1,380 F/g. The energy density of the full device varies between 22 and 42 Wh/l depending on the device configuration, which is superior to those of commercially available double-layer supercapacitors, pseudocapacitors, lithium-ion capacitors, and hybrid supercapacitors tested under the same conditions and is comparable to that of lead acid batteries. These hybrid supercapacitors use aqueous electrolytes and are assembled in air without the need for expensive “dry rooms” required for building today’s supercapacitors. Furthermore, we demonstrate a simple technique for the fabrication of supercapacitor arrays for high-voltage applications. These arrays can be integrated with solar cells for efficient energy harvesting and storage systems.

scholarly journals Synthesis of bimetallic nickel cobalt selenide particles for high-performance hybrid supercapacitors

RSC Advances ◽  
2022 ◽  
Vol 12 (3) ◽  
pp. 1471-1478
Author(s):  
Bei Jiang ◽  
Yang Liu ◽  
Jingchao Zhang ◽  
Yinhuan Wang ◽  
Xinyu Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Nickel Cobalt ◽  
Cobalt Selenide

The litchi-like Ni–Co selenide constructed Ni0.95Co2.05Se4//AC hybrid supercapacitor achieves an energy density of 37.22 W h kg−1 and a power density of 800.90 W kg−1. The ASC device can retain 95.21% of the original capacity after 4000 cycles.

Rutile-TiO2 decorated Li4Ti5O12 nanosheet arrays with 3D interconnected architecture as anodes for high performance hybrid supercapacitors

2015 ◽  
Vol 3 (46) ◽  
pp. 23570-23576 ◽  
Author(s):  
Lin Gao ◽  
Dekang Huang ◽  
Yan Shen ◽  
Mingkui Wang
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
Ultrahigh Energy ◽  
Hybrid Supercapacitor ◽  
Rutile Tio2 ◽  
Hybrid Supercapacitors ◽  
Nanosheet Arrays

A hybrid supercapacitor exhibits an ultrahigh energy density of 74.85 W h kg−1 at a power density of 300 W kg−1.

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.

Synthesis of novel bimetallic nickel cobalt telluride nanotubes on nickel foam for high-performance hybrid supercapacitors

2020 ◽  
Vol 7 (2) ◽  
pp. 477-486 ◽  
Author(s):  
Shiyi Zhang ◽  
Dongzhi Yang ◽  
Ming Zhang ◽  
Yaxin Liu ◽  
Ting Xu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Solvothermal Synthesis ◽  
High Performance ◽  
Nickel Foam ◽  
Specific Capacity ◽  
Hybrid Supercapacitor ◽  
High Specific Capacity ◽  
Hybrid Supercapacitors ◽  
Ion Exchange Reaction ◽  
Nickel Cobalt

Novel bimetallic nickel cobalt telluride nanotubes are grown on nickel foam by solvothermal synthesis and ion-exchange reaction for constructing self-standing hybrid supercapacitor electrodes with high specific capacity and electrical conductivity.

Ammonia-etching-assisted nanotailoring of manganese silicate boosts faradaic capacity for high-performance hybrid supercapacitors

2020 ◽  
Vol 4 (5) ◽  
pp. 2220-2228 ◽  
Author(s):  
Xueying Dong ◽  
Yifu Zhang ◽  
Qiang Chen ◽  
Hanmei Jiang ◽  
Qiushi Wang ◽  
...  
Keyword(s):  
Particle Size ◽  
High Performance ◽  
Average Particle Size ◽  
Average Particle ◽  
Manganese Silicate ◽  
Hybrid Supercapacitors ◽  
20 Nm

Nanotailoring of active manganese silicate with an average particle size of about 20 nm is realized by an ammonia-etching-assisted route, delivering a 3.55-times higher faradaic capacity than the traditional yolk–shell counterpart in hybrid supercapacitors.

ZIF-67-assisted construction of hollow core/shell cactus-like MnNiCo trimetal electrodes and Co, N dual-doped carbon electrodes for high-performance hybrid supercapacitors

2020 ◽  
Vol 8 (28) ◽  
pp. 14287-14298 ◽  
Author(s):  
Huihui Lv ◽  
Xubin Zhang ◽  
Fumin Wang ◽  
Guojun Lv ◽  
Tiantian Yu ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Electrodes ◽  
Core Shell ◽  
Hollow Core ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Electrochemical Storage ◽  
Storage Properties

.A novel hybrid supercapacitor of Ni-CCH@MnNiCo-OH//ZIF-67-C-KOH was successfully fabricated with promising electrochemical storage properties.

Microporous Ni11(HPO3)8(OH)6 nanocrystals for high-performance flexible asymmetric all solid-state supercapacitors

2014 ◽  
Vol 43 (45) ◽  
pp. 17000-17005 ◽  
Author(s):  
Yanping Gao ◽  
Junhong Zhao ◽  
Zhen Run ◽  
Guangqin Zhang ◽  
Huan Pang
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Stability ◽  
Maximum Energy ◽  
Asymmetric Supercapacitor

Microporous Ni11(HPO3)8(OH)6 nanocrystals were successfully applied to create a flexible solid-state asymmetric supercapacitor, which achieved a maximum energy density of 0.45 mW h cm−3 with high stability for 10 000 cycles.

scholarly journals α- and β-Phase Ni-Mg Hydroxide for High Performance Hybrid Supercapacitors

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1686 ◽  
Author(s):  
Jingzhou Yin ◽  
Guolang Zhou ◽  
Xiaoliang Gao ◽  
Jiaqi Chen ◽  
Lili Zhang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Magnesium Hydroxide ◽  
High Performance ◽  
High Specific Capacitance ◽  
Electrochemical Performances ◽  
Nickel Salt ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Β Phase ◽  
High Storage

Mg-substituted α- and β-phase nickel hydroxides with high specific capacitance and good stability have been synthesized via sacrificial metal-based replacement reaction. 2D α- and β-phase nickel-magnesium hydroxide (NiMg-OH) have been synthesized by sacrificing magnesium (Mg) powder with nickel salt aqueous solutions. Interestingly, the phase of the obtained NiMg-OH can be controlled by adjusting the nickel precursor. As well, the Mg powder is used not only as Mg source but also alkali source to form NiMg-OH. The α-phase nickel-magnesium hydroxide sample (α-NiMg-OH) exhibits lager surface area of 290.88 m2 g–1. The electrochemical performances show that the α-NiMg-OH presented a superior specific capacitance of 2602 F g–1 (1 A g–1) and β-phase nickel-magnesium hydroxide sample (β-NiMg-OH) exhibits better stability with 87% retention after 1000 cycles at 10 A g–1. The hybrid supercapacitor composed of α-NiMg-OH and activated carbon (AC) display high storage performance and cycle stability, it presents 89.7 F g–1 (1 A g–1) and of 0–1.6 V potential window and it maintains capacitance retention of 84.6% subsequent to 4000 cycles.

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