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Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...
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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
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Laser-Assisted Large-Scale Fabrication of All-Solid-State Asymmetrical Micro-Supercapacitor Array.

Jian Gao1, Changxiang Shao1, Shengxian Shao1

  • 1Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|August 8, 2018
PubMed
Summary

Researchers developed flexible micro-supercapacitors using laser writing and electrodeposition. These devices offer high energy density and can power electronics, showcasing potential for portable and integrated devices.

Keywords:
asymmetrical micro-supercapacitorcontrollable output voltageintegrated systemlarge-scale energy storage devicelaser scan technology

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Energy Storage

Background:

  • Micro-supercapacitors are crucial for portable, flexible, and integrated electronics.
  • Existing micro-supercapacitors often face limitations in scalability and energy density.

Purpose of the Study:

  • To fabricate large-scale, integrated asymmetrical micro-supercapacitor (AMSC) arrays.
  • To evaluate the performance of AMSCs for powering commercial electronics.

Main Methods:

  • Utilized laser direct writing and electrodeposition techniques for fabrication.
  • Integrated series-connected AMSCs on flexible substrates like ITO-PET film.

Main Results:

  • Achieved ideal flexibility and high areal specific capacitance (21.8 mF cm⁻²).
  • Demonstrated excellent rate capability and an energy density of 12.16 µW h cm⁻², surpassing previous reports.
  • Successfully powered commercial electronics using integrated AMSC arrays.

Conclusions:

  • The developed AMSC arrays show significant promise for portable, flexible, and integrated electronic applications.
  • The integration with solar cells proves the feasibility for practical, self-powered systems.
  • This technology advances energy storage solutions for next-generation electronics.