Regulated Zn Plating and Stripping by a Multifunctional Polymer‐Alloy Interphase Layer for Stable Zn Metal Anode

Advanced Science, Journal Year: 2023, Volume and Issue: 10(29)

Published: Aug. 13, 2023

Metallic zinc electrode with a high theoretical capacity of 820 mAh g-1 is highly considered as promising candidate for next-generation rechargeable batteries. However, the unavoidable hydrogen evolution, uncontrolled dendrite growth, and severe passivation reaction badly hinder its practical implementations. Herein, robust polymer-alloy artificial protective layer designed to realize dendrite-free Zn metal anode by integration zincophilic SnSb nanoparticles Nafion. In comparison bare electrode, Nafion-SnSb coated (NFSS@Zn) exhibits lower nucleation energy barrier, more uniform electric field distribution stronger anti-corrosion capability, thus availably suppressing growth interfacial side reactions. As consequence, NFSS@Zn long cycle life over 1500 h at 1 mA cm-2 an ultra-low voltage hysteresis (25 mV). Meanwhile, when paired MnO2 cathode, as-prepared full cell also demonstrates stable performance 1000 cycles 3 A . This work provides inspired approach boost anodes.

Language: Английский

---

Flame-retardant ammonium polyphosphate/MXene decorated carbon foam materials as polysulfide traps for fire-safe and stable lithium-sulfur batteries

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 89, P. 313 - 323

Published: Nov. 1, 2023

Language: Английский

---

MXenes and Their Derivatives for Advanced Solid‐State Energy Storage Devices

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(41)

Published: June 7, 2023

Abstract Solid‐state energy storage devices (SSESDs) are believed to significantly improve safety, long‐term electrochemical/thermal stability, and energy/power density as well reduce packaging demands, showing the huge application potential in large‐scale storage. Nevertheless, some key issues like low ionic conductivities, poor interface contact, dendrites growth limit practical of SSESDs. In recent years, MXenes for SSESDs have received reassuring advances on account unique parameters. overall reviews about subject seldom. this review, current their derivatives solid‐state Li–metal, Li‐ion, Li–I/S, Na‐ion, Zn–air, Zn–metal batteries, supercapacitors cathode/anode optimization, medication, electrolyte fillers, etc., comprehensively reviewed. First all, essential principles shown, such precursors, etching/delamination strategies, superior properties systems. Meanwhile, classification evaluation parameters electrolytes summarized. Subsequently, application, modification mechanism, design strategy boosting electrochemical behaviors systematically reviewed discussed. At last, perspectives challenges future construction strategies recommended. This review shall assist scientists build advanced with along safety.

Language: Английский

---

Carboxyl‐Substituted Organic Molecule Assembled with MXene Nanosheets for Boosting Aqueous Na⁺ Storage

Small, Journal Year: 2023, Volume and Issue: 19(47)

Published: July 24, 2023

Aqueous alkali-ion batteries have enormous promise as a kind of safe, reliable, and sustainable energy technologies for power supplies. Although organic molecules with tunable diverse configurations are potential electroactive materials, their inadequate redox activity electron affinity hinder the practical application aqueous storage. Herein, novel electron-withdrawing carboxyl-substituted dipyridophenazine (CDPPZ) molecule is designed synthesized Na+ Significantly, introduction carboxyl functional groups not only serves additional redox-active sites reversible coordination, but also causes rearrangement intramolecular cloud density to reduce level, thereby ensuring high superior CDPPZ molecule. For portable electronics, self-supporting, adhesive-free, flexible CDPPZ@MXene electrode further constructed by incorporating highly MXene nanosheets, which delivers fast, stable, unrivaled storage capability capacity 172.6 mAh cm-3 excellent stability over 4000 cycles. In situ dynamic analysis combined theoretical calculations illustrates mechanism corresponding coordinated pathway. Finally, high-performance Na-ion battery fabricated exceptional energy/power remarkable cycling lifespan, confirming its promising prospect.

Language: Английский

---

Research status and perspectives of MXene-based materials for aqueous zinc-ion batteries

Rare Metals, Journal Year: 2024, Volume and Issue: 43(5), P. 1867 - 1885

Published: Feb. 4, 2024

Language: Английский

---