Unraveling the Intercorrelation Between Micro/Mesopores and K Migration Behavior in Hard Carbon

Small, Год журнала: 2022, Номер 18(12)

Опубликована: Янв. 27, 2022

Abstract Pore‐structure design with increased ion‐diffusion ability is usually regarded as an effective strategy to improve K‐storage performance in hard carbon (HC). However, the relationship between porous structure and K + migration behavior remains unclear requires further exploration. Herein, a series of chemically activated spheres (denoted AHCSs) controllable micro/mesopores are successfully synthesized explore intercorrelation behavior. The experimental results indicate AHCSs have two different storage ways, that is, adsorption at high potential region intercalation process low region. These behaviors closely related pores evolution: micropores afford extra active sites for efficient K‐ions adsorption, therefore positive correlation adsorption‐contributed capacity confirmed; mesopores permit more intercalation/deintercalation by offering adequate pathways, result correlations intercalation‐contributed well initial Coulombic efficiency revealed. All these together contribute achieving excellent reversible capacity, exceptional rate capability ultra‐long cycle lifespan PIBs, simultaneously exhibit energy density considerable cycling stability potassium‐ion full cells. promote fundamental understanding carbon.

Язык: Английский

---

Molybdenum chalcogenides based anode materials for alkali metal ions batteries: Beyond lithium ion batteries

Energy storage materials, Год журнала: 2022, Номер 50, С. 308 - 333

Опубликована: Май 19, 2022

Язык: Английский

---

Co-activation for enhanced K-ion storage in battery anodes

National Science Review, Год журнала: 2023, Номер 10(7)

Опубликована: Апрель 25, 2023

The relative natural abundance of potassium and potentially high energy density has established potassium-ion batteries as a promising technology for future large-scale global storage. However, the anodes' low capacity discharge platform lead to density, which impedes their rapid development. Herein, we present possible co-activation mechanism between bismuth (Bi) tin (Sn) that enhances K-ion storage in battery anodes. co-activated Bi-Sn anode delivered 634 mAh g

Язык: Английский

---

2D‐Layer‐Structure Bi to Quasi‐1D‐Structure NiBi₃: Structural Dimensionality Reduction to Superior Sodium and Potassium Ion Storage

Advanced Materials, Год журнала: 2023, Номер 35(41)

Опубликована: Авг. 7, 2023

Layer-structured bismuth (Bi) is an attractive anode for Na-ion and K-ion batteries due to its large volumetric capacity suitable redox potentials. However, the cycling stability rate capability of Bi are restricted by volume expansion sluggish Na/K-storage kinetics. Herein, a structural dimensionality reduction strategy proposed developed converting 2D-layer-structured into quasi-1D structured NiBi3 with enhanced reaction kinetics reversibility realize high-rate stable performance Na/K-ion storage. As proof concept, intermetallic low formation energy, metallic conductivity, 3D diffusion pathways delivers outstanding retention 94.1% (332 mAh g-1 ) after 15 000 cycles storage, high initial coulombic efficiency 93.4% improved Moreover, investigations on highly reversible mechanisms cycling-driven morphology reconstruction further reveal origins accommodation expansion. The finding this work provides new high-performance design manipulation reconstruction.

Язык: Английский

---

Environmental behavior, human health effect, and pollution control of heavy metal(loid)s toward full life cycle processes

Eco-Environment & Health, Год журнала: 2022, Номер 1(4), С. 229 - 243

Опубликована: Ноя. 29, 2022

Heavy metal(loid)s (HMs) have caused serious environmental pollution and health risks. Although the past few years witnessed achievements of studies on behavior HMs, related toxicity mechanisms, control, their relationship remains a mystery. Researchers generally focused one topic independently without comprehensive considerations due to knowledge gap between science human health. Indeed, full life cycle control HMs is crucial should be reconsidered with combination occurrence, transport, fate in environment. Therefore, we started by reviewing behaviors which are affected variety natural factors as well physicochemical properties. Furthermore, mechanisms were discussed according exposure route, mechanism, adverse consequences. In addition, current state-of-the-art available technologies for wastewater solid wastes summarized. Finally, based research trend, proposed that advanced in-operando characterizations will help us better understand fundamental reaction big data analysis approaches aid establishing prediction model risk management.

Язык: Английский

---

Roadmap for a sustainable circular economy in lithium-ion and future battery technologies

Journal of Physics Energy, Год журнала: 2022, Номер 5(2), С. 021501 - 021501

Опубликована: Дек. 9, 2022

Abstract The market dynamics, and their impact on a future circular economy for lithium-ion batteries (LIB), are presented in this roadmap, with safety as an integral consideration throughout the life cycle. At point of end-of-life (EOL), there is range potential options—remanufacturing, reuse recycling. Diagnostics play significant role evaluating state-of-health condition batteries, improvements to diagnostic techniques evaluated. present, manual disassembly dominates EOL disposal, however, given volumes that be anticipated, automated approaches dismantling battery packs will key. first stage recycling after removal cells initial cell-breaking or opening step. Approaches reviewed, contrasting shredding cell two alternative approaches. Design one approach could assist easier cells, new design enable LIBs reviewed. After disassembly, subsequent separation black mass performed before further concentration components. There plethora recovering materials; roadmap sets out directions including pyrometallurgy, hydrometallurgy, short-loop, direct, biological recovery LIB materials. Furthermore, anode, lithium, electrolyte, binder plastics considered order maximise proportion materials recovered, minimise waste way towards zero-waste life-cycle implications discussed considering overall system recycling, also directly investigating different methods. legal regulatory perspectives considered. Finally, view future, next-generation chemistries evaluated, identifying gaps research. This review takes form series short reviews, each section written independently by diverse international authorship experts topic. Collectively, these reviews comprehensive picture current state art how technologies expected develop future.

Язык: Английский

---

Coordination engineering in single-site catalysts: General principles, characterizations, and recent advances

Chem, Год журнала: 2023, Номер 10(1), С. 48 - 85

Опубликована: Сен. 21, 2023

Язык: Английский

---

Sodium‐Ion and Polyaniline Co‐Intercalation into Ammonium Vanadate Nanoarrays Induced Enlarged Interlayer Spacing as High‐Capacity and Stable Cathodes for Flexible Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, Год журнала: 2023, Номер 33(48)

Опубликована: Июль 12, 2023

Abstract Vanadate oxides with low price and high theoretical capacity are competitive cathodes for aqueous zinc‐ion batteries (AZIBs). However, the existing problems such as sluggish Zn 2+ ion mobility, weak conductivity, complicated flexible electrode preparation hinder development of their practical applications in AZIBs (FAZIBs). Herein, sodium‐ion polyaniline co‐inserted into ammonium vanadate (NaNVO‐PANI) nanoarrays, which can serve novel freestanding FAZIBs. By virtue synergistic pillar effect sodium ions polyaniline, interplanar spacing NaNVO‐PANI expands to ≈13.8 Å. Both experimental data calculation confirm that optimal boost enhance electronic conductivity reduce diffusion barrier. As expected, resulting coin‐type exhibit 610.7 mAh g −1 at 0.5 A remarkable retention 98% after 5000 cycles 5 . More encouragingly, quasi‐solid‐state FAZIBs sandwich structure assembled, achieving impressive energy density 345.59 Wh kg a power 380.46 W This study is great significance developing high‐performance vanadium‐based wearable

Язык: Английский

---

Challenges and industrial perspectives on the development of sodium ion batteries

Nano Energy, Год журнала: 2024, Номер 129, С. 110052 - 110052

Опубликована: Июль 26, 2024

Язык: Английский

---

Recent Progress of Promising Cathode Candidates for Sodium‐Ion Batteries: Current Issues, Strategy, Challenge, and Prospects

Small Structures, Год журнала: 2023, Номер 4(10)

Опубликована: Июнь 22, 2023

Lithium‐ion batteries (LIBs) have dominated the secondary market in past few decades. However, their widespread application is seriously hampered by limited lithium resource and high cost. Recently, sodium‐ion (SIBs) generated significant attention because of characteristics abundant raw sources, low cost, similar “rocking chair” mechanism with LIBs, which hold great potential large‐scale energy storage. Cathode materials excellent electrochemical performance are urgent demand for next‐generation SIBs. Herein, this review provides a comprehensive overview recent advances most promising SIBs cathode candidates, including layered oxides, polyanionic materials, Prussian blue analogues. The currently existing issues that need to be addressed these cathodes pointed out, such as insufficient density, electron conductivity, air sensitivity, so on. This also details structural three candidates. Moreover, optimization strategies improving summarized, element doping, morphology modification, structure architecture, Finally, current research status proposed future developmental directions concluded. aims provide practical guidance development

Язык: Английский

---