Nano-Micro Letters最新文献

A novel low-potential cation-disordered rock-salt lithium titanium oxyfluoride (DRX-Li_xTiOF₂) anode synthesized via electrochemically induced transformation enables pseudocapacitive Li⁺ storage extending down to 0.1 V vs. Li⁺/Li and delivers a high reversible capacity of ~ 310 mAh g⁻¹ and an ultrahigh rate capability exceeding 64.4 C.

Monte Carlo simulations reveal that the pseudocapacitive characteristics of DRX-Li_xTiOF₂ anode originate from a three-dimensional percolation network that facilitates fast Li⁺ migration with low energy barriers, enabled by a cation/anion-disordered structure arising from the mixed occupancy of Li/Ti cations and O/F anions.

The lithium-ion capacitor assembled with this DRX-Li_xTiOF₂ anode and an activated carbon cathode exhibits exceptional performance: a 4.0 V operating voltage, a high energy density of 197.9 Wh kg⁻¹ and an ultrahigh power density of 50,000 W kg⁻¹.

The biomimetic honeycomb-like porous magnetic NiFe@N-doped carbon aerogel (NFNCA) was efficiently fabricated through chemical cross-linking, in situ growth, unidirectional freeze-drying, and pyrolysis carbonization.

The synergistic effect arising from the 3D conductive networking structure, diverse heterogeneous interfaces, magnetic/dielectric multi-component, and multiple loss pathways of NFNCA endowed this carbon aerogel with outstanding impedance matching and electromagnetic wave attenuation performance.

The NFNCA featured excellent microwave attenuation, real-time monitoring of structural integrity, infrared thermal stealth, thermal management, and flame retardancy capabilities.

Based on the Maillard reaction principle, an endogenous doping strategy was developed to induce the formation of a rich-inorganic solid–electrolyte interphase (SEI) layer on a hard carbon anode.

The hard carbon anode with inorganic-enriched SEI layer delivers enhanced rate, high initial coulombic efficiency and stable cycling performance.

The assembled full cell with a Na₃V₂(PO₄)₃ cathode exhibits excellent cycling stability over 700 cycles, achieving a capacity retention of 89.2% at 1 C with an N/P ratio of 1.12.

This review elucidates how innovative electrolytes (highly concentrated electrolytes, localized high-concentration electrolytes, etc.) reshape ion–solvent interactions.

Solvation-structure regulation is highlighted as the key to enhanced battery performance, with its recent advances summarized across diverse battery systems.

This review outlines challenges and opportunities in solvation-structure design to guide next-generation energy storage technologies.

A systematic review of recent advances of the process of friction nanogenerator participates in the different thermal management of materials through contact and non-contact thermal sensing.

Triboelectric materials participated in the application of the whole process of thermal management are reviewed based on the up-to-date works.

Prospects and challenges for future need for advanced and thermoelectric device designs and integration with existing energy technologies are discussed.

Sluggish Li⁺ transport limits high-power output and fast charging in lithium-rich oxides, governed by intrinsic factors (crystal structure, distortion, and reaction kinetics) and external factors (cathode/electrolyte interface behavior, volumetric strain, and particle size distribution).

Rate performance can be improved through interface engineering, targeted doping, particle morphology control, bulk structural optimization, and manipulation of redox chemistry to accelerate Li⁺ transport and stabilize electrochemical reactions.

Understanding dynamic Li⁺ transport requires advanced operando characterization and multiscale computational modeling. Overcoming the capacity-kinetics paradox requires a mechanism-driven approach aimed at lowering the energy barriers for Li⁺ migration.