Results 111 to 120 of about 2,020,795 (211)

Carbonized-leaf Membrane with Anisotropic Surfaces for Sodium-ion Battery

open access: yes, 2016
A simple one-step thermal pyrolysis route has been developed to prepare carbon membrane from a natural leaf. The carbonized leaf membrane possesses anisotropic surfaces and internal hierarchical porosity, exhibiting a high specific capacity of 360 mAh/g ...
Hongbian Li (1419187)   +10 more
core   +1 more source

Ru‐Doping‐Engineered Oxygen Vacancies in MoO3‐x Nanostructured Films With Ultrahigh Capacitance for Flexible Asymmetric Supercapacitors

open access: yesAdvanced Science, EarlyView.
Ru‐doping‐induced defect engineering enables freestanding Ru–MoO3‐x flexible films with enriched oxygen vacancies, modulated band structure, and enhanced charge transport. The optimized electrode delivers ultrahigh capacitance approaching the theoretical limit of MoO3, while assembled asymmetric supercapacitors exhibit high energy density, wide‐voltage
Xiaoqing Bin   +8 more
wiley   +1 more source

TiO6 as a Compensatory Structural Unit in Co‐Free, High‐Ni Layered Oxide for Durable Lithium‐Ion Batteries

open access: yesAdvanced Science, EarlyView.
Ti substitution stabilizes Co‐free high‐Ni layered oxides through both structural and electronic effects. TiO6 octahedra act as compensatory structural units that help interrupt cooperative Jahn–Teller distortion and suppress detrimental phase transitions, while the electron‐withdrawing inductive effect of Ti stabilizes the oxygen lattice. As a result,
Bixian Ying   +19 more
wiley   +1 more source

Evaluation of commercial 18650 and 26700 sodium-ion cells and comparison with well-established lithium-ion cells

open access: yesJournal of Power Sources Advances
Recently, the first sodium-ion cells have been commercialized and have become available for consumers. Given, moreover, the exciting announcements by several producers of such battery cells, it is of great interest to analyze these first commercial cells
Katharina Bischof   +7 more
doaj   +1 more source

Understanding Sodium-Ion Battery Degradation with a Data-Driven Approach

open access: yes
Sodium-ion (Na-ion) batteries offer a cost-effective and safer alternative to lithium-ion systems, yet real-time health monitoring remains challenging due to slow diagnostics and complex degradation mechanisms. This work presents a digital-twin framework
Yuxun Ren
core   +1 more source

Ultrafast Chemical Pre‐Sodiation of Pseudocapacitive CaV8O20 Anodes for High‐Performance Sodium‐Ion Capacitors

open access: yesAdvanced Science, EarlyView.
An ultrafast (2‐minute), gas‐free chemical pre‐sodiation strategy using Na‐benzophenone is developed to compensate for initial sodium loss in calcium vanadate (CaV8O20). Driven by the Ca2+ ‘spectator effect’, the framework enables highly reversible, quasi‐zero‐strain solid‐solution sodium storage, explicitly bypassing destructive conversion reactions ...
Neetu Bansal   +7 more
wiley   +1 more source

Single-Phase Solid-Solution Reaction Facilitated Sodium-Ion Storage in Indium-Substituted Monoclinic Sodium-Iron Phosphomolybdate Cathodes [PDF]

open access: yes
Despite being a compelling alternative to the existing lithium-ion battery technology, the unavailability of cathodes with high energy density and capacity poses a key challenge toward the wider adaption of sodium-ion batteries (NIB).
Dutta, Ravi Chandra   +8 more
core   +1 more source

Architecting Phase‐Selective Interlayers for Stable SiOx Lithium Storage via Dual‐Function Design

open access: yesAdvanced Science, EarlyView.
Silicon anodes offer high capacity but suffer severe volume expansion. Silicon monoxide (SiO) buffers expansion, yet uncontrolled lithiation irreversibly consumes lithium as Li2O and oxygen‐rich silicates. Here, we design a layered SiOx featuring a phase‐selective conductive interfacial interlayer (PSCII), i.e., a Li4SiO4‐rich, ion‐accessible ...
Zhenfei Chang   +12 more
wiley   +1 more source

Flexible Energy System Scheduling Based on the Coordination of Sodium-Ion Batteries and Data Centers in Extremely Cold Regions

open access: yesEnergies
The increasing penetration of renewable energy and rising computing demands intensify the need for flexible regulation resources. In extremely cold regions, low temperatures degrade energy storage and adjustable-load performance, challenging integrated ...
Yu Cao   +5 more
doaj   +1 more source

Universal Battery Capacity Degradation Forecasting Driven by Foundation Models Across Diverse Chemistries and Conditions

open access: yesAdvanced Science, EarlyView.
A unified time‐series forecasting framework learns transferable battery capacity‐degradation patterns from 20 heterogeneous datasets spanning chemistries, formats, temperatures, and cycling conditions. A single model delivers competitive predictions on both known and previously unseen datasets, while physics‐guided representation learning improves ...
Joey Chan   +8 more
wiley   +1 more source

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