Elevated energy density and cycle stability of α-Mn2O3 3D-microspheres with addition of neodymium dopant for pouch-type hybrid supercapacitors

2020 ◽  
Vol 362 ◽  
pp. 137169 ◽  
Author(s):  
M. Karuppaiah ◽  
P. Sakthivel ◽  
S. Asaithambi ◽  
L. Krishna Bharat ◽  
Goli Nagaraju ◽  
...  
Keyword(s):  
Energy Density ◽  
Cycle Stability ◽  
Hybrid Supercapacitors ◽  
3D Microspheres

scholarly journals Fabrication of Bimetallic Oxides (MCo2O4: M=Cu, Mn) on Ordered Microchannel Electro-Conductive Plate for High-Performance Hybrid Supercapacitors

2021 ◽  
Vol 13 (17) ◽  
pp. 9896
Author(s):  
Mai Li ◽  
Zheyi Meng ◽  
Ruichao Feng ◽  
Kailan Zhu ◽  
Fengfeng Zhao ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Density ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Negative Electrode ◽  
Good Prospect ◽  
Cycle Stability ◽  
Conductive Plate ◽  
Hybrid Supercapacitors ◽  
Ordered Macroporous

AB2O4-type binary-transition metal oxides (BTMOs) of CuCo2O4 and MnCo2O4 were successfully prepared on ordered macroporous electrode plates (OMEP) for supercapacitors. Under the current density of 5 mA cm−2, the CuCo2O4/OMEP electrode achieved a specific capacitance of 1199 F g−1. The asymmetric supercapacitor device prepared using CuCo2O4/OMEP as the positive electrode and carbon-based materials as the negative electrode (CuCo2O4/OMEP//AC) achieved the power density of 14.58 kW kg−1 under the energy density of 11.7 Wh kg−1. After 10,000 GCD cycles, the loss capacitance of CuCo2O4/OMEP//AC is only 7.5% (the retention is 92.5%). The MnCo2O4/OMEP electrode shows the specific and area capacitance of 843 F g−1 and 5.39 F cm−2 at 5 mA cm−2. The MnCo2O4/OMEP-based supercapacitor device (MnCo2O4/OMEP//AC) has a power density of 8.33 kW kg−1 under the energy density of 11.6 Wh kg−1 and the cycle stability was 90.2% after 10,000 cycles. The excellent power density and cycle stability prove that the prepared hybrid supercapacitor fabricated under silicon process has a good prospect as the power buffer device for solar cells.

A core–shell structure of cobalt sulfide//G-ink towards high energy density in asymmetric hybrid supercapacitors

2020 ◽  
Vol 4 (9) ◽  
pp. 4848-4858
Author(s):  
Venkata Thulasivarma Chebrolu ◽  
Balamuralitharan Balakrishnan ◽  
Aravindha Raja Selvaraj ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Shell Structure ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Sulfide ◽  
Core Shell ◽  
Hybrid Supercapacitors ◽  
Promising Strategy ◽  
Asymmetric Hybrid ◽  
Core Shell Structure

New atom substitution in transition metals is a promising strategy for improving the performance of supercapacitors (SCs).

A systematic approach to achieve high energy density hybrid supercapacitors based on Ni–Co–Fe hydroxide

2020 ◽  
Vol 353 ◽  
pp. 136578
Author(s):  
Su Chan Lee ◽  
Shude Liu ◽  
Pragati A. Shinde ◽  
Kyung Yoon Chung ◽  
Seong Chan Jun
Keyword(s):  
Energy Density ◽  
Systematic Approach ◽  
High Energy ◽  
High Energy Density ◽  
Hybrid Supercapacitors ◽  
Fe Hydroxide

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.

Remarkable electrochemical properties of novel LaNi0.5Co0.5O3/0.333Co3O4 hollow spheres with a mesoporous shell

2017 ◽  
Vol 5 (12) ◽  
pp. 5838-5845 ◽  
Author(s):  
Ni Wang ◽  
Mengqi Yao ◽  
Peng Zhao ◽  
Wencheng Hu ◽  
Sridhar Komarneni
Keyword(s):  
Energy Density ◽  
Electrochemical Properties ◽  
Hollow Spheres ◽  
Cycling Stability ◽  
Hybrid Supercapacitors ◽  
Mesoporous Shell

Novel LaNi0.5Co0.5O3/0.333Co3O4 hollow spheres with a mesoporous shell are developed as hybrid supercapacitors which exhibit superior energy density and outstanding cycling stability.

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.

High Energy Density in Combination with High Cycling Stability in Hybrid Supercapacitors

2022 ◽  
Author(s):  
Guang Cong Zhang ◽  
Man Feng ◽  
Qing Li ◽  
Zhuang Wang ◽  
Zixun Fang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Hybrid Supercapacitors

Ni3S2/Ni(OH)2 Directly Grown on Ni Foam for Battery-Type Electrode with Super Long Cycle Stability

2020 ◽  
Vol 20 (8) ◽  
pp. 4722-4729
Author(s):  
Chunli Guo ◽  
Li Wang ◽  
Zeying Yan ◽  
Yuyu Zhang ◽  
Jie Li ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Density ◽  
Potential Application ◽  
Cycling Performance ◽  
Cycle Stability ◽  
Ni Foam ◽  
Capacity Retention ◽  
Hybrid Device ◽  
Long Cycle ◽  
Areal Capacity

The Ni3S2/Ni(OH)2 electrode could deliver a high areal capacity of 1.58 C/cm2 at 2 mA/cm2, along with outstanding cycling stability (113% capacity retention after 30,000 cycles). The energy density of the Ni3S2/Ni(OH)2//AC hybrid device was 30.23 Wh/kg at a power density of 155 W/kg (15.5 Wh/kg at 3,875 W/kg). Compared with other Ni(OH)2 composites on Ni foam, these results indicate that Ni3S2/Ni(OH)2 directly grown on Ni foam opens up the potential application for energystorage devices with high areal capacity and high cycling performance.

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