Interfacial dual-modulation through deoxygenation effect and tuning hydrogen-bonding environment toward highly reversible Zn metal anodes

Energy storage materials, Journal Year: 2025, Volume and Issue: 75, P. 104012 - 104012

Published: Jan. 9, 2025

Language: Английский

---

Comprehensive crystallographic engineering for high-efficiency and durable zinc metal anodes

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101453 - 101453

Published: Feb. 1, 2025

Language: Английский

---

Regulating Preferred Crystal Plane with Modification of Exposed Grain Boundary Toward Stable Zn Anode

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 26, 2024

Abstract Aqueous Zn metal batteries (ZMBs) are largely hampered by the poor stability of zinc (Zn) anode in aqueous electrolyte due to uncontrollable deposition behavior and parasitic reactions. Hence, a stable Glu@Zn via acid etching is developed that simultaneously exposes (002) plane modifies exposed grain boundaries. The surface‐preferred achieved minimizing its surface energy. And boundaries also modified decomposition products etching, which can greatly reduce adverse effects caused highly active These features favor accrediting long‐term cycle lifespan exceeding 4400 h with high average coulombic efficiency (CE) 98.9%. Surprisingly, run for more than 250 50% utilization. assembled Glu@Zn//NH 4 V O 10 full deliver specific capacity 291.6 mAh g −1 after 400 cycles even at low current density 0.5 A . It obtain cycling performance up 2000 cycles. To further verify stability, pouch cell constructed preserve 5 mAh. This study sheds light on energy regulation exposing preferred crystal develop reversible ZMBs.

Language: Английский

---

Unlocking the Critical Role of Cations Doping in MnO₂ Cathode with Enhanced Reaction Kinetics for Aqueous Zinc Ion Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract MnO 2 ‐based cathode aqueous rechargeable zinc‐ion batteries (ZIBs) have favorable sustainability characteristics and are considered potential candidates for low‐cost effective, high‐safety energy storage systems. Nevertheless, the development of them has been hampered by unstable electrode structures ambiguous charge mechanisms. Herein, role doping Fe 3+ Co 2+ into δ‐MnO materials (FMO, CMO) is comprehensively probed working mechanism Zn//FMO, Zn//CMO studied using in situ ex characterization, electrochemical analysis, theoretical calculations. Metal cations can partially replace Mn to form M─O bonds enhance structural stability as well redox activity . It found that effectively modulates interaction between Zn /H + structure inhibits formation ZnMn O 4 (ZMO) by‐products confers fast diffusion ability The reactions FMO CMO mainly via H /Zn intercalation/deintercalation accompanied OTF‐base‐like double hydroxide x (OTF) y (OH) 2x‐y ‐nH (Z‐LDH) deposition/dissolution. This research enriches fundamental comprehension ZIBs reveals way modify electrodes performance enhancement.

Language: Английский

---

Stress Release of Zincophilic N‐Doped Carbon@Sn Composite on High‐Curvature Surface of Zinc Foam for Dendrite‐Free 3D Zinc Anode

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Abstract Commercial 3D zinc foam anodes with high deposition space and ion permeation have shown great potential in aqueous batteries. However, the local accumulated stress from its high‐curvature surface exacerbates Zn dendrite issue, leading to poor reversibility. Herein, we employed zincophilic N‐doped carbon @ Sn composites (N‐C@Sn) as nano‐fillings effectively release of curvature foams toward dendrite‐free anode battery (AZIB). These electronegative conductive N‐C@Sn supporters can provide a highly channel for initial nucleation reduce current density regulating deposition. Uniform further assists homogenous distribution on platting surface, which gives positive feedback loop improve As result, composite (ZCSn Foam) symmetric cell achieves long cycle lifespan 1100h at 0.5 mA cm −2 , much more than that Foam (∼80 h lifespan). The full ZCSn Foam||MnO 2 exhibits remarkable reversibility 67% retention after 1000 cycles 0.8 A g −1 76% 1600 Ag . This 3D‐constructing strategy may offer promising practical pathway metal application.

Language: Английский

---

Electrolyte Engineering with Asymmetric Spatial Shielding Effect for Aqueous Zinc Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Abstract The electrochemical instability of electrode/electrolyte interface and aqueous electrolyte collectively brings technical barriers, such as side reactions like hydrogen evolution corrosion, well zinc dendrites, which hinder the practical application batteries. Here, an engineering strategy is proposed with asymmetric spatial shielding effect by employing molecules structure a cosolvent. Such molecule contains small methyl group large cyclopentyl to balance migration capability volume, can not only promote solvation Zn 2+ containing more anions solid derived from abundant but also rapidly effectively adsorb on surface anode remodel electric double layer. This alleviates corrosion while achieving dendrite‐free deposition. Consequently, Zn/I 2 cell operate stably at A g −1 for 30 000 cycles over 180 days, capacity retention 79.8%. Despite featuring cathode areal 4.74 mAh cm −2 N/P ratio 2.5, Zn/NH 4 V O 10 still achieves impressive 88.8% 0.5 200 cycles, demonstrating significant potential application.

Language: Английский

---

Micromechanical cleavage enables neat surface and organic-inorganic interlayer for reversible Zn anodes

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 634, P. 236475 - 236475

Published: Feb. 14, 2025

Language: Английский

---

Polycationic Polymer Functionalized Separator to Stabilize Aqueous Zinc-Iodine Batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104130 - 104130

Published: Feb. 1, 2025

Language: Английский

---

Synergistic Cationic Shielding and Anionic Chemistry of Potassium Hydrogen Phthalate for Ultrastable Zn─I₂ Full Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Electrolyte additives are investigated to resolve dendrite growth, hydrogen evolution reaction, and corrosion of Zn metal. In particular, the electrostatic shielding cationic strategy is considered an effective method regulate deposition morphology. However, it very difficult for such a simple modification avoid competitive reactions, corrosion, interfacial pH fluctuations. Herein, multifunctional potassium phthalate (KHP) based on synergistic design anionic chemistry ultrastable Zn||I 2 full batteries demonstrated. K cations, acting as constructed smooth HP anions can enter first solvation shell 2+ reduced activities H O, while they remain in primary finally involved formation SEI, thus accelerating charge transfer kinetics. Furthermore, by situ monitoring near‐surface electrode, KHP effectively inhibit accumulation OH − by‐products. Consequently, symmetric cells achieve high stripping–plating reversibility over 4500 2600 h at 1.0 5 mA cm −2 , respectively. The deliver ultralong term stability 1400 cycles with high‐capacity retention 78.5%.

Language: Английский

---

Zn2+ flux regulator to modulate the interface chemistry toward highly reversible Zn anode

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 682, P. 232 - 241

Published: Nov. 28, 2024

Language: Английский

---