Free‐Standing, Foldable V₂O₃/Multichannel Carbon Nanofibers Electrode for Flexible Li‐Ion Batteries with Ultralong Lifespan

Abstract

VSP-300 multichannel potentiostatic-galvanostatic system. EIS was performed with the frequencies between 0.01 Hz and 100 kHz and a current amplitude of 5 mV.

Comprehensive Analyses of Aqueous Zn Metal Batteries: Characterization Methods, Simulations, and Theoretical Calculations

“…However, due to the high cost of mining lithium, the capacity limitation of graphite anodes, potential safety issues, and geopolitical resource concerns, the development of alternative secondary batteries has become increasingly urgent. [ 1–10 ] New energy storage systems, such as silicon‐based anodes, lithium metal anodes, and lithium–sulfur batteries, exhibit increased capacity and energy density; sodium‐ion and potassium‐ion batteries can solve the problem of cost and resource shortages. [ 11–18 ] However, safety and environmental hazards caused by the toxicity and flammability of the organic electrolyte still exist.…”

Stabilizing V2O3 in carbon nanofiber flexible films for ultrastable potassium storage

“…The advantages have been confirmed in lithium ion batteries and sodium ion batteries. [38][39][40][41] However, it still suffers from low electronic conductivity and volume change, 42,43 which are inherent defects of metal oxides. 44,45 The huge volume expansion during the charge and discharge process leads to structural collapses, which result in a worse rate performance and limited cycle life.…”

Foldable batteries: from materials to devices

“…Structure design represents a new method for achieving systemlevel-integration of energy-storage-devices without changing the dimension of materials; this method is compatible with the standard manufacturing processes and is cost effective. 22,[93][94][95][96][97] The design of a foldable energy-storage device begins with decoupling of the energy-storage parts (rigid parts) from the exibility providing parts (so parts). Furthermore, an appropriate balance between the two sets of parts is necessary for realizing high-performance foldable batteries with stable electrochemical properties.…”