Quantifying Degradation Parameters of Single-Crystalline Ni-Rich Cathodes in Lithium-Ion Batteries.

Single-crystal LiNi Co Mn O (SC-NCM, x+y+z=1) cathodes are renowned for their high structural stability and reduced accumulation of adverse side products during long-term cycling. While advances have been made using SC-NCM cathode materials, careful studies of cathode degradation mechanisms are scarce. Herein, we employed quasi single-crystalline LiNi Co Mn O (SC-NCM65) to test the relationship between cycling performance and material degradation for different charge cutoff potentials.

High-, low- micelles from partially perfluorinated block polymers.

Kinetically trapped ("persistent") micelles enable emerging applications requiring a constant core diameter. Preserving a barrier to chain exchange with low- requires a commensurately higher for micelle persistence. Low-, high- micelles containing fluorophobic interactions were studied using poly(ethylene oxide--perfluorooctyl acrylate)s (OF, = 8, 11) in methanolic solutions.

Mesoporous TiO Microparticles with Tailored Surfaces, Pores, Walls, and Particle Dimensions Using Persistent Micelle Templates.

Mesoporous microparticles are an attractive platform to deploy high-surface-area nanomaterials in a convenient particulate form that is broadly compatible with diverse device manufacturing methods. The applications for mesoporous microparticles are numerous, spanning the gamut from drug delivery to catalysis and energy storage. For most applications, the performance of the resulting materials depends upon the architectural dimensions including the mesopore size, wall thickness, and microparticle size, yet a synthetic method to control all these parameters has remained elusive.

Reversible Molecular and Ionic Storage Mechanisms in High-Performance ZnVO·HO Xerogel Cathode for Aqueous Zn-Ion Batteries.

The cathode is a critical component for aqueous Zn-ion batteries (ZIBs) to achieve high capacity and long stability. In this work, we demonstrate a dissolution-free, low-Zn-preinserted bilayer-structured VO xerogel cathode, ZnVO·HO (ZnVO), with excellent capacity and stability using a low-cost ZnSO electrolyte. Its discharge capacity reaches 463 mAh g at 0.

A High Performing Zn-Ion Battery Cathode Enabled by In Situ Transformation of V O Atomic Layers.

Developing high capacity and stable cathodes is a key to successful commercialization of aqueous Zn-ion batteries (ZIBs). Pure layered V O has a high theoretical capacity (585 mAh g ), but it suffers severe capacity decay. Pre-inserting cations into V O can substantially stabilize the performance, but at an expense of lowered capacity.

Full Gamut Wall Tunability from Persistent Micelle Templates via Ex Situ Hydrolysis.

The predictive self-assembly of tunable nanostructures is of great utility for broad nanomaterial investigations and applications. The use of equilibrium-based approaches however prevents independent feature size control. Kinetic-controlled methods such as persistent micelle templates (PMTs) overcome this limitation and maintain constant pore size by imposing a large thermodynamic barrier to chain exchange.