A highly-effective nitrogen-doped porous carbon sponge electrode for advanced K–Se batteries

A rechargeable K–Se battery is emerging as an energy storage system because of its much higher specific capacity than that of the traditional alkali metal-ion batteries, but is facing some critical issues and challenges.

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Facile Fabrication of MnCo2O4/NiO Flower-Like Nanostructure Composites with Improved Energy Storage Capacity for High-Performance Supercapacitors

Nanomaterials ◽

10.3390/nano11061424 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1424

Author(s):

Sangaraju Sambasivam ◽

K. V. G. Raghavendra ◽

Anil Kumar Yedluri ◽

Hammad Mueen Arbi ◽

Venkatesha Narayanaswamy ◽

...

Keyword(s):

Energy Storage ◽

Photoelectron Spectroscopy ◽

Active Sites ◽

High Performance ◽

Storage System ◽

Specific Capacity ◽

Energy Storage System ◽

Diffraction Field ◽

X Ray ◽

Binder Free

Over the past few decades, the application of new novel materials in energy storage system has seen excellent development. We report a novel MnCo2O4/NiO nanostructure prepared by a simplistic chemical bath deposition method and employed it as a binder free electrode in the supercapacitor. The synergistic attraction from a high density of active sites, better transportation of ion diffusion and super-most electrical transportation, which deliver boost electrochemical activities. X-ray diffraction, field-emission scanning electron microscopy, and X-ray photoelectron spectroscopy have been used to investigate the crystallinity, morphology, and elemental composition of the as-synthesized precursors, respectively. Cyclic voltammetry, galvanostatic charge/discharge, and electron impedance spectroscopy have been employed to investigate the electrochemical properties. The unique nanoparticle structures delivered additional well-organized pathways for the swift mobility of electrons and ions. The as-prepared binder-free MnCo2O4/NiO nanocomposite electrode has a high specific capacity of 453.3 C g−1 at 1 Ag−1, and an excellent cycling reliability of 91.89 percent even after 4000 cycles, which are significantly higher than bare MnCo2O4 and NiO electrodes. Finally, these results disclose that the as-fabricated MnCo2O4/NiO electrode could be a favored-like electrode material holds substantial potential and supreme option for efficient supercapacitor and their energy storage-related applications.

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Cyclic voltammetric study of tin hexacyanoferrate for aqueous battery applications

Journal of Electrochemical Science and Engineering ◽

10.5599/jese.289 ◽

2016 ◽

Vol 6 (3) ◽

pp. 225 ◽

Cited By ~ 5

Author(s):

Denys Gromadskyi ◽

Volodymyr Chervoniuk ◽

Sviatoslav Kirillov

Keyword(s):

Alkali Metal ◽

Specific Energy ◽

Metal Ion ◽

Specific Capacity ◽

Negative Electrode ◽

Specific Power ◽

Alkali Metal Ion ◽

Cyclic Voltammetric Study ◽

Aqueous Battery ◽

Double Layer Capacitors

A hybrid composite containing 65 mass % of tin hexacyanoferrate mixed with 35 mass % of carbon nanotubes has been synthesized and its electrochemical behavior as a negative electrode in alkali metal-ion batteries has been studied in 1 mol L-1 aqueous solution of sodium sulfate. The specific capacity of pure tin hexacyanoferrate is 58 mAh g-1, whereas the specific capacity normalized per total electrode mass of the composite studied reaches 34 mAh g-1. The estimated maximal specific power of an aqueous alkali-metal ion battery with a tin hexacyanoferrate electrode is ca. 3.6 kW kg-1 being comparable to characteristics of industrial electric double-layer capacitors. The maximal specific energy accumulated by this battery may reach 25.6 Wh kg-1 at least three times exceeding the specific energy for supercapacitors.

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A first-principles investigation of the ScO2 monolayer as the cathode material for alkali metal-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c7ta10233j ◽

2018 ◽

Vol 6 (7) ◽

pp. 3171-3180 ◽

Cited By ~ 9

Author(s):

Zhixiao Liu ◽

Huiqiu Deng ◽

Shiguo Zhang ◽

Wangyu Hu ◽

Fei Gao

Keyword(s):

Energy Density ◽

Alkali Metal ◽

Cathode Material ◽

First Principles ◽

Metal Ion ◽

Specific Capacity ◽

High Specific Capacity ◽

Alkali Metal Ion

The ScO2 monolayer as the cathode material can deliver high specific capacity, voltage and energy density.

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Realizing the synergy of Sn cluster incorporation and nitrogen doping for a carbonaceous hierarchical nanosheet-assembly enables superior universal alkali metal ion storage performance with multiple active sites

Journal of Materials Chemistry A ◽

10.1039/d0ta08535a ◽

2020 ◽

Vol 8 (46) ◽

pp. 24774-24781

Author(s):

Gongrui Wang ◽

Yapeng Li ◽

Shuhong Jiao ◽

Jie Li ◽

Bo Peng ◽

...

Keyword(s):

Alkali Metal ◽

Metal Ion ◽

Active Sites ◽

Nitrogen Doping ◽

Specific Capacity ◽

Cycling Performance ◽

Alkali Metal Ion ◽

Storage Performance ◽

Ion Storage

Carbonaceous hierarchical nanosheet-assembly with Sn cluster incorporation and nitrogen doping (c-SnNC-HNA) have been prepared, acting as universal alkali metal ion storage host with remarkable specific capacity and outstanding cycling performance.

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