Heteroatom Immobilization Engineering toward High-Performance Metal Anodes

ACS Nano, Год журнала: 2024, Номер unknown

Опубликована: Сен. 11, 2024

Heteroatom immobilization engineering (HAIE) is becoming a forefront approach in materials science and engineering, focusing on the precise control manipulation of atomic-level interactions within heterogeneous systems. HAIE has emerged as an efficient strategy to fabricate single-atom sites for enhancing performance metal-based batteries. Despite significant progress achieved through metal anodes batteries, several critical challenges such dendrites, side reactions, sluggish reaction kinetics are still present. In this review, we delve into fundamental principles underlying heteroatom anodes, aiming elucidate its role electrochemical We systematically investigate how facilitates uniform nucleation inhibits reactions at anode-electrolyte interface, promoting desolvation ions accelerating Finally, discuss various strategies implementing electrode materials, high-temperature pyrolysis, vacancy reduction, molten-salt etching anchoring. These include selecting appropriate heteroatoms, optimizing methods, constructing material architectures. They can be utilized further refine enhance capabilities facilitate widespread application next-generation battery technologies.

Язык: Английский

---

Precise Modulation and Densification of Metal Sites in Single‐Atom Catalysts for Energy Storage and Conversion

Advanced Energy Materials, Год журнала: 2024, Номер 14(27)

Опубликована: Май 14, 2024

Abstract Single‐atom catalysts (SACs) exhibit excellent electrocatalytic performance in various catalytic reactions. However, the low metal loading (<1.0 wt.%) and difficulty precisely modulating their coordination configurations hinder practical yield of target products understanding actual reaction mechanisms. To overcome these obstacles, a series strategies are proposed to design SACs with precise configuration and/or high density active sites. For an insightful comprehensive strategies, it is worth analyzing categorizing them according intrinsic mechanisms applicational perspectives. In this review, synthesis high‐density first summarized. Moreover, taking typical electrochemical processes, including oxygen reduction reaction, nitrogen carbon dioxide metal–sulfur batteries, etc., as examples, applications discussed, focusing on advantages enhancing products, improving efficiency energy storage, revealing unique effects. Finally, challenges perspective modulation densification sites for proposed. It expected that review can provide useful reference preparation controllably coordinated SACs.

Язык: Английский

---

Hydrophobic, zincophilic and conductive SEI protective layer stabilizes metallic Zn anode under high current densities

Chemical Engineering Journal, Год журнала: 2024, Номер 497, С. 154396 - 154396

Опубликована: Июль 30, 2024

Язык: Английский

---

Innovative synergistic control of electric fields and Zn²⁺ dynamics for revolutionizing zinc metal battery stability

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Aqueous zinc-ion batteries (ZIBs) are emerging as promising next-generation energy storage systems due to their inherent safety, environmental sustainability, and cost-effectiveness. However, widespread application is hindered by challenges such dendritic Zn growth, hydrogen evolution, corrosion-induced passivation, which compromise performance scalability. To overcome these obstacles, we developed a novel dual-interface modified zinc anode integrating fluoride (ZnF2)-silicon (Si) interface using fluorine-doped silicon nanoparticles encapsulated within hollow mesoporous carbon nanospheres (F-Si@HMCS). The in situ formation of ZnF2 layer provides high electrochemical stability, effectively suppressing dendrite formation, mitigating corrosion, reducing side reactions with the electrolyte. silica further facilitates uniform electrodeposition forming Si-O-Zn bonds, regulate electric field distribution lower nucleation barriers. Additionally, structure efficient ion transport acts buffer against volume changes during cycling. Consequently, F-Si@HMCS@Zn electrode exhibits long lifespan over 2500 h at 5 mA cm-2 capacity 0.5 symmetrical cell test. When coupled α-MnO2 cathodes, resulting ZIBs exhibit outstanding stable cycle life 2000 cycles 2 A g-1.

Язык: Английский

---

Multi-functional protective material with atomically dispersed zincophilic site enabling long-life zinc anode

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Parasitic side reactions and the formation of zinc dendrites in aqueous solutions severely hinder practical application Zn metal anodes. Carbon materials with high electrical conductivity mechanical robustness are promising protective for However, zincophobic nature carbon impedes cycling stability zinc-ion batteries. Herein, a versatile design strategy is proposed utilizing doped single atoms atomically dispersed zincophilic sites as multi-functional material high-performance Taking bismuth-single-atom-doped (Bi SAs) an example, density functional calculations verify that introduction bismuth can enhance zincophilicity, promote robust adhesion to foil, effectively suppress hydrogen evolution. Guided by theoretical calculations, Bi single-atom-doped nanobelts synthesized employed stabilize As expected, due atomic-level sites, hydrophobicity, enhanced ionic conductivity, SAs@Zn anode demonstrates over 4200 h 600 reversible at 5 mA cm

Язык: Английский

---

Oriented and Continuous Phase Epitaxy Enabled by A Highly Dendrite‐Resistant Plane Toward Super‐High Areal Capacity Zinc Metal Batteries

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 12, 2024

Abstract Unstable Zn metal anodes with dendrites/side reactions are becoming the main obstacle to practical application of zinc‐based aqueous batteries. Epitaxial growth has been considered be an effective strategy for solving these issues, especially inducing (002) plane growth. Nonetheless, (002)‐textured is difficult achieve highly stable anode under high capacity resulting from its large lattice distortion. Herein, Cu single atom anchored polymeric carbon nitride (Cu@PCN) synthesized by a facile thermal polymerization method. Serving as multifunctional protective layer on surface, Cu@PCN can provide massive nucleation sites at nano‐level and uniformize electron distribution through coordination engineering. Optimizing structures N atoms within matrix enables redistribution electric field regulates ion flux. More importantly, this first reported customize oriented continuous phase epitaxy along dendrite‐resistant Zn(101) reducing (101) surface energy. This pattern dense deposition leads reversible plating/stripping achieved, which delivers extended cycling life 550 h 10 A cm −2 , 20 mAh . The full cell also displays performance 1200 cycles.

Язык: Английский

---

Synergistic lithiophilic inner layer and nitrogen-riched outer layer in the gradient solid electrolyte interphase to achieve stable lithium metal batteries

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157202 - 157202

Опубликована: Окт. 1, 2024

Язык: Английский

---

Supramolecular Structure Design of Block Copolymer by Combining 3D Confined Self-Assembly with Selective Disassembly

Polymer, Год журнала: 2024, Номер 303, С. 127108 - 127108

Опубликована: Апрель 29, 2024

Язык: Английский

---

Significant Performance Enhancement of Zn-Ion Hybrid Supercapacitors Based on Microwave-Assisted Pyrolyzed Active Carbon via Synergistic Effect of NaHCO3 Activation and CNT Networks

Materials Today Sustainability, Год журнала: 2024, Номер 28, С. 100977 - 100977

Опубликована: Сен. 6, 2024

Язык: Английский

---

Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 24, 2024

Abstract Electrochemical alkaline water electrolysis offers significant economic advantages; however, these benefits are hindered by the high kinetic energy barrier of dissociation step and sluggish kinetics hydrogen evolution reaction (HER) in media. Herein, ensemble effect binary types Rh single atoms (Rh‐N x Rh‐O ) on TiO 2 ‐embedded carbon nanofiber (Rh‐TiO /CNF) is reported, which serves as potent active sites for high‐performance HER anion exchange membrane electrolyzer (AEMWE). Density functional theory (DFT) analyses support experimental observations, highlighting critical role facilitated sites. The Rh‐TiO /CNF demonstrates an impressive areal current density 1 A cm −2 , maintaining extended durability up to 225 h a single‐cell setup. Furthermore, 2‐cell AEMWE stack utilizing tested under industrial‐scale conditions. This research makes contribution commercialization next‐generation durable stacks clean production.

Язык: Английский

---