Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 178073 - 178073
Published: Dec. 12, 2024
Language: Английский
Rare Metals, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 17, 2025
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 28, 2024
Abstract Alloy‐type anodes are of interest for their resource‐rich and high theoretical capacity performance in sodium‐ion batteries (SIBs). However, severe volume expansion may lead to rapid decay electrode pulverization. In this work, metallic Bi with better structure stability is rationally selected as a skeleton form 2D BiSb alloy alleviate the expansion. Interestingly, by combining in‐situ XRD ex‐situ TEM characterizations, reversible multi‐step alloying sodium storage mechanism ↔ Na(Bi, Sb) Na 3 (Bi, 0.4 Sb 0.6 anode elucidated, partial amorphization expanded interlayer spacing also revealed, which greatly thereby enhancing electrochemical stability. Furthermore, density functional theory kinetic calculations demonstrate that demonstrates lower + adsorption energy diffusion barriers, ensuring fast electron ion transportation during storage. Benefiting from synergistic effects binary alloy, exhibits cycling 446 mAh g −1 at 0.1 A , 70% after 1100 cycles 0.5 . This work provides new insights opportunities develop advanced precise alloy‐type materials SIBs.
Language: Английский
Citations
5
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 10, 2025
Abstract Graphite stands out as the most promising anode material for potassium‐ion batteries (PIBs) due to its cost‐effectiveness and ideal low‐potential platform. However, perceived poor rate capability of graphite has become a key concern commercial application in PIBs. Herein, above understanding on is updated. Without modifying structure, by simply introducing tin trifluoromethanesulfonate (Sn(OTf) 2 ) additive phosphate‐based electrolyte, K||graphite half‐cell can deliver capacity 240 mAh g −1 at high C (1 = 279 mA operates 1000 cycles with negligible degradation. Moreover, an unprecedented ≈200 4 achieved three‐electrode K|K ref|graphite cell configuration where interference K metal counter electrode eliminated. Unlike structure modification strategies, such remarkable performance originated from low‐impedance inorganic‐rich KF/SnF hybrid interphase graphite. Thus, effectiveness electrolyte regulation strategy highlights underestimated anode. This renewed insight dispels regarding applicability enriches advantages PIBs high‐power density.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 22, 2025
Abstract Potassium‐ion batteries (PIBs), with abundant resources and low cost, are considered as a promising alternative to commercial lithium‐ion for low‐cost large‐scale applications. Over the past decade, significant academic progresses made in development of PIBs, including advancements cathodes, anodes, electrolytes. However, most improvements achieved under laboratory conditions (e.g., K metal‐based half‐cells mass loading active materials), performance PIBs full cells is still far from requirements A critical insight bridging research commercialization urgently needed guide future this field. This review will discuss challenges improvement strategies focusing on potential practical electrolytes, well their cells. It aims give readers clear logical understanding PIBs. The application analysis also discussed provide comprehensive Finally, perspectives provided
Language: Английский
Citations
0
Published: Jan. 1, 2025
Language: Английский
Citations
0
Materials Today Energy, Journal Year: 2025, Volume and Issue: unknown, P. 101894 - 101894
Published: April 1, 2025
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163552 - 163552
Published: May 1, 2025
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 6, 2024
Carbonaceous materials have been considered the most promising anode in sodium-ion batteries (SIBs) due to their low cost, good electrical conductivity, and structural stability. The main challenge of carbonaceous anodes prior commercialization is initial coulomb efficiencies, derived from a lack an efficient technique reveal fundamental comprehension sodium storage mechanisms. Here, direct observation quasi-Na metallic clusters during cycling through situ XRD reported. By means such technique, strong self-adsorption behavior forming detected within rationally designed highly defective ultrathin carbon nanosheets (HDCS) anode. Such crystalline system transformation mechanism HDCS brings capacity retention about 100% after 1000 cycles at 1 A g
Language: Английский
Citations
3
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 20, 2024
Abstract Sodium‐ion batteries (SIBs) and potassium‐ion (PIBs) have enormous potential for large‐scale energy storage due to their cost‐effectiveness, safety, environmental compatibility. Developing high‐capacity highly reliable cathode materials is key advancing the commercialization of SIBs PIBs. Low‐cost Prussian blue analogs (PBAs), with open 3D framework ease synthesis, are preferred applications. However, unique growth mechanism PBAs introduces numerous Fe(CN) 6 vacancies, which compromise structural integrity result in capacity decay collapse during long‐term electrochemical cycling. Additionally, cracking can cause dissolution transition metal (TM) ions, undesirable interfacial reactions, gas generation, shorten battery's lifespan raise safety concerns. In this review, mechanisms vacancy formation first clarified, providing a comprehensive overview current strategies remediation based on both bottom‐up top‐down approaches. It then elucidate how optimized enhance lattice stability, suppress TM mitigate generation. Finally, it discussed future research directions provide perspectives further development high‐performance
Language: Английский
Citations
3
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 16, 2024
Abstract All‐solid‐state lithium metal batteries (ASSLBs) offer an alternative route to safe and high energy density power sources. Sulfur‐based cathodes with theoretical specific capacity low cost are crucial for advancing ASSLBs. However, the electronic insulation sluggish kinetics of sulfide materials like Li 2 S severely limit battery performance. Herein, strategy is proposed that a highly conductive S‐NbSe material enhances electrochemical performance through bidirectional self‐activation. The chemical interaction between NbSe induces 2‐x x Se derivatization, serving as basis activation. carrier transport properties, evolution self‐activation mechanism during oxidation–reduction process revealed. activation explored accelerate processes by modifying conductivity sulfur species conversion pathways without insulating aggregation. Therefore, ASSLBs using cathode active achieve electrode‐level 394 Wh kg −1 524 W at 1 C (4.35 mA cm −2 ) 25 °C. retention after 100 cycles 0.5 ≈99.3% almost no degradation. This work provides new options insights rational design development chalcogenide high‐performance
Language: Английский
Citations
2