Sustaining 500,000 Folding Cycles Through Bioinspired Stress Dispersion Design in Sodium-Ion Batteries.

Developing super-foldable electronic materials and devices presents a significant challenge, as intrinsic conductive materials are unable to achieve numerous true-folding operations (super-foldable) due to limitations from short-range forces of chemical bonds. Consequently, super-foldable batteries remain unexplored. This work focused on sodium-ion batteries as a breakthrough point to advance super-foldable devices.

Mesoporous Cubic Nanocages Assembled by Coupled Monolayers With 100% Theoretical Capacity and Robust Cycling.

High capacity and long cycling often conflict with each other in electrode materials. Despite extensive efforts in structural design, it remains challenging to simultaneously achieve dual high electrochemical properties. In this study, we prepared brand-new completely uniform mesoporous cubic-cages assembled by large -spacing Ni(OH) coupled monolayers intercalated with VO (NiCMCs) using a biomimetic approach.

Approaching Superfoldable Thickness-Limit Carbon Nanofiber Membranes Transformed from Water-Soluble PVA.

Recent progress in flexible electronics has attracted tremendous attention. However, it is still difficult to prepare superfoldable conductive materials with good biocompatibility, high sensing sensitivities, and large specific surface areas. It is expected that biomimetic methods and water-soluble precursors like poly(vinyl alcohol) (PVA) for electrospinning will be utilized to solve the above problems.

BiSb@BiO/SbO encapsulated in porous carbon as anode materials for sodium/potassium-ion batteries with a high pseudocapacitive contribution.

Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are emerging next-generation energy storage technology, and exploiting applicative electrode materials to accommodate the large-sized Na and K are urgently needed. Herein, an innovative composite of BiSb@BiO/SbO nanoparticles encapsulated in porous carbon (BiSb@BiO/SbO@C) is fabricated through a template-assisted in-situ pyrogenic decomposition and evaluated as anodes for SIBs and PIBs. The BiSb@BiO/SbO@C delivers high specific capacity, superior rate capability (205 mA h g and 111 mA h g at 2 Ah g) and good cycling stability (248 mA h g and 214 mA h g after 500 cycles at 1 A g) in SIBs and PIBs.