Lightweight and Strong Cellulosic Triboelectric Materials Enabled by Cell Wall Nanoengineering

Nano Letters, Год журнала: 2024, Номер 24(10), С. 3273 - 3281

Опубликована: Март 1, 2024

As intelligent technology surges forward, wearable electronics have emerged as versatile tools for monitoring health and sensing our surroundings. Among these advancements, porous triboelectric materials garnered significant attention their lightness. However, face the challenge of improving structural stability to further enhance accuracy sensors. In this study, a lightweight strong cellulosic material is designed by cell wall nanoengineering. By tailoring structure, shows high mechanical strength 51.8 MPa. The self-powered sensor constructed has sensitivity 33.61 kPa–1, fast response time 36 ms, excellent pressure detection durability. Notably, still enables performance after exposure 200 °C achieves real-time feedback human motion, thereby demonstrating great potential in field electronic devices.

Язык: Английский

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A Dual‐Carbon Potassium‐Ion Capacitor Enabled by Hollow Carbon Fibrous Electrodes with Reduced Graphitization

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 20, 2024

Abstract The large size of K + ions (1.38 Å) sets a challenge in achieving high kinetics and long lifespan potassium storage devices. Here, fibrous ZrO 2 membrane is utilized as reactive template to construct dual‐carbon K‐ion capacitor. Unlike graphite, ‐catalyzed graphitic carbon presents relatively disordered layer arrangement with an expanded interlayer spacing 0.378 nm accommodate insertion/extraction. Pyridine‐derived nitrogen sites can locally store K‐ions without disrupting the formation stage‐1 graphite intercalation compounds (GICs). Consequently, N‐doped hollow fiber achieves ‐storage capacity (primarily below 1 V), which 1.5 time that commercial graphite. Potassium‐ion hybrid capacitors are assembled using electrodes nanofiber separator. capacitor exhibits power 40 000 W kg −1 , full charge 8.5 s, 93% retention after 5000 cycles at A g low self‐discharge rate 8.6 mV h . scalability performance lattice‐expanded tubular underscores may advance practical potassium‐ion capacitors.

Язык: Английский

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Galvanic leaching recycling of spent lithium-ion batteries via low entropy-increasing strategy

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 11, 2025

The recycling of spent lithium-ion batteries can effectively mitigate the environmental and resource challenges arising from escalating generation battery waste soaring demand for metals. existing mixing-then-separating process is confronted with high entropy-increasing procedures, including crushing leaching, which result in irreversible entropy production due to decrease material orderliness or heavy chemical consumption, thereby hindering its thermodynamic efficiency economic viability entire process. Herein, we propose a galvanic leaching strategy that leverages self-assembly LiNi0.6Co0.2Mn0.2O2 particles their inherent aluminium foil current collectors batteries, creating primary cell system capable recovering metals without pre-crushing additional reductants. Under theoretical potential difference up 3.84 V, electrons flow charge aggregation achieve valence state reduction, crystal phase transition coordination environment change hard-to-dissolve metal components, contributing over 90% recovery nearly 30-fold increase kinetics. Environmental-economic assessments further indicate this reduces energy consumption carbon emissions by 11.36%-21.10% 5.08%-23.18%, respectively, compared conventional metallurgical methods, while enhancing benefits 21.14%-49.18%. methods face problems. Here, authors recover mixing reductants,

Язык: Английский

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In Situ Chemical Modulation of Graphitization Degree of Carbon Fibers and Its Potassium Storage Mechanism

Advanced Science, Год журнала: 2024, Номер 11(23)

Опубликована: Апрель 1, 2024

Abstract Graphite is considered to be the most auspicious anode candidate for potassium ion batteries. However, inferior rate performances and cycling stability restrict its practical applications. Few studies have investigated modulating graphitization degree of graphitic materials. Herein, a nitrogen‐doped carbon‐coated carbon fiber composite with tunable (CNF@NC) through etching growth, in‐situ oxidative polymerization, subsequent carbonization process reported. The prepared CNF@NC abundant electrochemical active sites rapid K + /electron transfer pathway, can effectively shorten distance promote insertion/removal . Amorphous domains short‐range curved graphite layers provide ample mitigation spaces storage, alleviating volume expansion highly graphitized CNF during repeated insertion/de‐intercalation. As expected, CNF@NC‐5 electrode presents high initial coulombic efficiency (ICE) 69.3%, an unprecedented reversible volumetric capacity 510.2 mA h cm −3 at 0.1 A g −1 after 100 cycles mass‐capacity 294.9 storage mechanism reaction kinetic analysis are studied by combining first‐principles calculation. It manifests that in adsorption‐insertion‐insertion (i.e., “1+2” model). solid electrolyte interphase (SEI) film forming also detected.

Язык: Английский

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Routes to Bidirectional Cathodes for Reversible Aprotic Alkali Metal–CO₂ Batteries

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Aprotic alkali metal-CO

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Dual-role KCl-assisted fabrication of porous carbon with controllable architecture from coal liquefaction residue for supercapacitors

Fuel, Год журнала: 2024, Номер 366, С. 131367 - 131367

Опубликована: Март 7, 2024

Язык: Английский

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Half-Covered ‘Glitter-Cake’ AM@SE Composite: A Novel Electrode Design for High Energy Density All-Solid-State Batteries

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Янв. 28, 2025

Abstract All-solid-state batteries (ASSBs) are pursued due to their potential for better safety and high energy density. However, the density of cathode ASSBs does not seem be satisfactory low utilization active materials (AMs) at loading. With small amount solid electrolyte (SE) powder in cathode, poor electrochemical performance is often observed contact loss non-homogeneous distribution AMs SEs, leading tortuosity limitation lithium electron transport pathways. Here, we propose a novel design that can achieve volumetric 1258 Wh L −1 AM content 85 wt% by synergizing merits AM@SE core–shell composite particles with conformally coated thin SE shell prepared from mechanofusion process particles. The structure an intimate guarantees ionic conduction pathway while unharming electronic conduction. In addition, play role filler reduces packing porosity electrode as well between separator layer. systematic demonstration optimization may provide understanding guidance on electrodes density, capacity, ultimately

Язык: Английский

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Activation-self-activation strategy for one-step preparation of Platycladus orientalis leaves based N-O-S self-doping hierarchical porous carbon for high-performance supercapacitor

Industrial Crops and Products, Год журнала: 2025, Номер 225, С. 120584 - 120584

Опубликована: Янв. 29, 2025

Язык: Английский

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Tailored super-microporous pitch-based carbon with small graphitic domains achieving high capacitive desalination performance

Desalination, Год журнала: 2025, Номер unknown, С. 118827 - 118827

Опубликована: Март 1, 2025

Язык: Английский

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A Temperature‐Adapted Ultraweakly Solvating Electrolyte for Cold‐Resistant Sodium‐Ion Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract Sodium‐ion batteries are applied to cold‐resistant energy storage hindered by phase transitions and sluggish Na + migration of traditional carbonate‐based electrolytes at low temperatures. The desolvation is a crucial step in impeding the transport , which primarily attributes robust solvent coordination . Herein, low‐temperature adaptive electrolyte with an ultraweakly coordinated 1,3‐dioxolane (DOL) designed for constructing anion‐rich solvation structure diglyme (G2)‐based electrolyte. electronegativity oxygen atoms G2 attenuated dipole‐dipole interaction between DOL G2. As temperature drops, weakened ‒O (G2) leads increased anionic less coordination, facilitating This anionic‐enhanced contributes formation stable solid interface hard carbon (HC) anode, accelerates diminishing voltage polarization Consequently, HC anode can retain high capacity 203.9 mAh g ‒1 (1 C) ‒50 °C, pouch cell composed HC||Na 3 V 2 (PO 4 ) ‒30 °C achieves retention 92.43% after 100 cycles 0.1 C. strategy guides design ultra‐low broadens range applications sodium‐ion batteries.

Язык: Английский

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