29 Result(s)

Article

Continuous transition from double-layer to Faradaic charge storage in confined electrolytes

The capacitance of the electrochemical interface has traditionally been separated into two distinct types: non-Faradaic electric double-layer capacitance, which involves charge induction, and Faradaic pseudoca...

Simon Fleischmann, Yuan Zhang, Xuepeng Wang, Peter T. Cummings… in Nature Energy (2022)

Article

Confined water controls capacitance

By using a battery of experimental and theoretical methods, it is shown that ion intercalation into the electrode material birnessite is mediated by structural water.

Patrice Simon, Yury Gogotsi in Nature Materials (2021)

Article

Perspectives for electrochemical capacitors and related devices

Electrochemical capacitors can store electrical energy harvested from intermittent sources and deliver energy quickly, but their energy density must be increased if they are to efficiently power flexible and w...

Patrice Simon, Yury Gogotsi in Nature Materials (2020)

Article

A general Lewis acidic etching route for preparing MXenes with enhanced electrochemical performance in non-aqueous electrolyte

Two-dimensional carbides and nitrides of transition metals, known as MXenes, are a fast-growing family of materials that have attracted attention as energy storage materials. MXenes are mainly prepared from Al...

Youbing Li, Hui Shao, Zifeng Lin, Jun Lu, Liyuan Liu, Benjamin Duployer… in Nature Materials (2020)

Article

Influences from solvents on charge storage in titanium carbide MXenes

Pseudocapacitive energy storage in supercapacitor electrodes differs significantly from the electrical double-layer mechanism of porous carbon materials, which requires a change from conventional thinking when...

Xuehang Wang, Tyler S. Mathis, Ke Li, Zifeng Lin, Lukas Vlcek… in Nature Energy (2019)

Chapter

MXenes for Supercapacitor Application

Being one of the key applications of MXenes, MXene-based supercapacitors attracted huge attention for their superior electrochemical performance. In this section, an overview of MXenes as supercapacitor electr...

Zifeng Lin, Patrice Simon in 2D Metal Carbides and Nitrides (MXenes) (2019)

Article

Partial breaking of the Coulombic ordering of ionic liquids confined in carbon nanopores

Ionic liquids are composed of equal quantities of positive and negative ions. In the bulk, electrical neutrality occurs in these liquids due to Coulombic ordering, in which ion shells of alternating charge for...

Ryusuke Futamura, Taku Iiyama, Yuma Takasaki, Yury Gogotsi… in Nature Materials (2017)

Article

Ultra-high-rate pseudocapacitive energy storage in two-dimensional transition metal carbides

The use of fast surface redox storage (pseudocapacitive) mechanisms can enable devices that store much more energy than electrical double-layer capacitors (EDLCs) and, unlike batteries, can do so quite rapidly...

Maria R. Lukatskaya, Sankalp Kota, Zifeng Lin, Meng-Qiang Zhao… in Nature Energy (2017)

Chapter

Materials for Electrochemical Capacitors

The aim of this chapter is threefold. First of all, we will attempt to briefly highlight the differences between batteries and electrochemical capacitors (ECs), describe the general types of ECs (symmetric and...

Thierry Brousse, Daniel Bélanger… in Springer Handbook of Electrochemical Energy (2017)

Article

In situ NMR and electrochemical quartz crystal microbalance techniques reveal the structure of the electrical double layer in supercapacitors

Supercapacitors store charge through the electrosorption of ions on microporous electrodes. Despite major efforts to understand this phenomenon, a molecular-level picture of the electrical double layer in work...

John M. Griffin, Alexander C. Forse, Wan-Yu Tsai, Pierre-Louis Taberna… in Nature Materials (2015)

Article

High-rate electrochemical energy storage through Li⁺ intercalation pseudocapacitance

Pseudocapacitance is commonly associated with surface or near-surface reversible redox reactions. The kinetics of charge storage in T-Nb₂O₅ electrodes is now quantified and the mechanism of lithium intercalation ...

Veronica Augustyn, Jérémy Come, Michael A. Lowe, Jong Woung Kim… in Nature Materials (2013)

Article

Internal exposure to carcinogenic polycyclic aromatic hydrocarbons and DNA damage: a null result in brief

Heiko U. Käfferlein, Boleslaw Marczynski, Patrice Simon… in Archives of Toxicology (2012)

Article

Wafer-level fabrication process for fully encapsulated micro-supercapacitors with high specific energy

In this paper a wafer-level process is proposed to fully integrate carbon-based micro-supercapacitor onto silicon substrate. This process relies on the deposition of a paste containing carbon, PVDF and acetone...

Hugo Durou, David Pech, David Colin, Patrice Simon… in Microsystem Technologies (2012)

Article

On the molecular origin of supercapacitance in nanoporous carbon electrodes

Although the superior electrochemical performance of supercapacitors capable of rapidly storing electrical energy is due to reversible ion adsorption in porous carbon electrodes, the molecular origin of this p...

Céline Merlet, Benjamin Rotenberg, Paul A. Madden, Pierre-Louis Taberna… in Nature Materials (2012)

Article

Ultrahigh-power micrometre-sized supercapacitors based on onion-like carbon

Electrochemical capacitors, also called supercapacitors, store energy in two closely spaced layers with opposing charges, and are used to power hybrid electric vehicles, portable electronic equipment and other...

David Pech, Magali Brunet, Hugo Durou, Peihua Huang… in Nature Nanotechnology (2010)