MXenes: Versatile 2D materials with tailored surface chemistry and diverse applications

Journal of Energy Chemistry, Год журнала: 2023, Номер 90, С. 253 - 293

Опубликована: Дек. 5, 2023

Язык: Английский

---

Green synthesis and applications of MXene for lithium–sulfur batteries

Energy storage materials, Год журнала: 2024, Номер 67, С. 103257 - 103257

Опубликована: Фев. 11, 2024

Язык: Английский

---

Enabling Efficient Anchoring‐Conversion Interface by Fabricating Double‐Layer Functionalized Separator for Suppressing Shuttle Effect

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(41)

Опубликована: Июль 15, 2024

Abstract Lithium‐sulfur batteries (LiSBs) with high energy density still face challenges on sluggish conversion kinetics, severe shuttle effects of lithium polysulfides (LiPSs), and low blocking feature ordinary separators to LiPSs. To tackle these, a novel double‐layer strategy functionalize is proposed, which consists Co atomically dispersed CoN 4 decorated Ketjen black (Co/CoN @KB) layer an ultrathin 2D Ti 3 C 2 T x MXene layer. The theoretical calculations experimental results jointly demonstrate metallic sites provide efficient adsorption catalytic capability for long‐chain LiPSs, while active facilitate the absorption short‐chain LiPSs promote Li S. stacking serves as microscopic barrier further physically block chemically anchor leaked from pores gaps Co/CoN @KB layer, thus preserving within anchoring‐conversion reaction interfaces balance accumulation “dead S” Consequently, ultralight loading @KB‐MXene, LiSBs exhibit amazing electrochemical performance even under sulfur lean electrolyte, outperforming lithium‐selenium (LiSeBs) can also be achieved. This work exploits universal effective functionalized separator regulate equilibrium adsorption‐catalytic interface, enabling high‐energy long‐cycle LiSBs/LiSeBs.

Язык: Английский

---

Applications and Perspectives of Ti3C2Tx MXene in Electrochemical Energy Storage Systems

International Journal of Electrochemical Science, Год журнала: 2025, Номер unknown, С. 100948 - 100948

Опубликована: Янв. 1, 2025

Язык: Английский

---

Multi-heterostructured MXene/NiS₂/Co₃S₄ with S-Vacancies to Promote Polysulfide Conversion in Lithium–Sulfur Batteries

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(19), С. 24502 - 24513

Опубликована: Май 6, 2024

The severe shuttle effect of polysulfides (LiPSs) and the slow liquid–solid phase conversion are main obstacles hindering practical application lithium–sulfur (Li–S) batteries. Separator modification with a high-activity catalyst can boost LiPSs suppress their effect. In this work, multi-heterostructured MXene/NiS2/Co3S4 rich S-vacancies was constructed facilely hydrothermal high-temperature annealing strategy for separator modification. MXene sheet not only provides physical barrier but also ensures high conductivity adsorption capacity catalyst; dual active centers NiS2 Co3S4 catalyze conversion. addition, vacancies heterostructures modulate electronic structure catalyst, improve its intrinsic activity, reduce reaction barrier, thus facilitating ion/electron transport inhibiting Benefiting from these advantages, Li–S battery modified exhibits exciting discharge capacities (1495.4 mAh g–1 at 0.1C 549.0 6C) an excellent ultra-long cycle life (average decay rate 0.026% 2000 cycles 2C); sulfur loading 10.0 mg cm–2, operates nearly 80 0.2C, giving retention 75.76%. This work

Язык: Английский

---

Efficient Visible-Light-Driven Photocatalytic Degradation of Antibiotics in Water by MXene-Derived TiO2-Supported SiO2/Ti3C2 Composites: Optimisation, Mechanism and Toxicity Evaluation

Environmental Pollution, Год журнала: 2024, Номер unknown, С. 125624 - 125624

Опубликована: Дек. 1, 2024

Язык: Английский

---

Promoting overall sulfur redox kinetics for Li–S batteries via interfacial synergy in a NiS–NiTe₂ heterostructure-modified separator

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(18), С. 10737 - 10744

Опубликована: Янв. 1, 2024

Lithium–sulfur (Li–S) batteries have garnered significant attention as a promising alternative to conventional lithium-ion due their high theoretical energy density.

Язык: Английский

---

Regulation of Li₂S Deposition and Dissolution to Achieve an Efficient Bidirectional Lithium–Sulfur Battery

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract Promoting the sulfur reduction reaction (SRR) and evolution (SER) kinetics is crucial for practical lithium–sulfur batteries. However, electrode will be passivated by insulated Li 2 S if blindly accelerated SRR kinetics, meanwhile, high activation energy of lead to premature oxidation (SER), achieving limited catalyst. Here, a nano‐nickel nitrogen‐doped carbon gel material (CG/Ni) induces instantaneous nucleation, further endows fast ion/electron transfer, resulting porous 3D growth instead single lateral growth. Therefore, CG/Ni avoids being passivated, accelerating kinetics. Meanwhile, decreases delithiation barrier, thus, facilitating dissociation. Both experiments theory calculation prove that achieves efficient bidirectional catalysis. Consequently, cathode delivers low‐capacity decay ratio 0.047% per cycle 900 cycles at 5 C. This work unlocks catalyst provide new insight high‐efficiency

Язык: Английский

---

A Review of the Application of Metal-Based Heterostructures in Lithium–Sulfur Batteries

Catalysts, Год журнала: 2025, Номер 15(2), С. 106 - 106

Опубликована: Янв. 22, 2025

Lithium–sulfur (Li-S) batteries are recognized as a promising alternative in the energy storage domain due to their high theoretical density, environmental friendliness, and cost-effectiveness. However, challenges such polysulfide dissolution, low conductivity of sulfur, limited cycling stability hinder widespread application. To address these issues, incorporation heterostructured metallic substrates into Li-S has emerged pivotal strategy, enhancing electrochemical performance by facilitating better adsorption catalysis. This review delineates modifications made cathode separator through heterostructures. We categorize heterostructures three classifications: single metals metal compounds, MXene materials paired with formed entirely compounds. Each category is systematically examined for its contributions behavior efficiency batteries. The evaluated both contexts, revealing significant improvements lithium-ion retention. Our findings suggest that strategic design can not only mitigate inherent limitations but also pave way development high-performance systems.

Язык: Английский

---

Strategies of tailoring 2D MXenes for enhancing Sulfur-Based battery performance

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159924 - 159924

Опубликована: Янв. 1, 2025

Язык: Английский

---