ZnCoS/ZnCoLDH lamellar core-shell materials for high-performance asymmetric supercapacitors

Journal of Energy Storage, Год журнала: 2025, Номер 110, С. 115250 - 115250

Опубликована: Янв. 6, 2025

Язык: Английский

---

Nanocellulose‐Derived Hierarchical Carbon Framework‐Supported P‐Doped MoO₂ Nanoparticles for Optimizing Redox Kinetics in Lithium–Sulfur Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

The integration of nanocatalysts into the separators lithium-sulfur batteries (LSBs) boosts polysulfide conversion efficiency. However, aggregation catalyst nanoparticles diminishes active surface area. Moreover, densely packed catalyst-modified layers often hinder ion transport rates and impede access to catalytic sites. To overcome these challenges, a strategy is reported for modifying commercial separators, using wood nanocellulose as building block construct hierarchical P-doped MoO2-x anchored on N, P co-doped porous carbon (P-MoO2-x/NPC). web-like entangled forms framework in situ polymerization polyaniline, providing abundant anchoring sites MoO2 nanoparticles. addition atoms optimizes d-band center enhances activity conversion. LSBs assembled P-MoO2-x/NPC coated polypropylene separator display an initial discharge capacity 1621 mAh g-1 rate performance 774 at 5 C. Even with sulfur loading 8.1 mg cm-2 lean electrolyte conditions, cell achieves areal 11.3 0.1 This work provides biopolymer nanofiber solution constructing LSB advanced electrochemical reactivity.

Язык: Английский

---

Regulating Electronic Structure from Local Charge Transfer of Fe-V Dual-sites for Efficient Peroxymonosulfate Activation

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125068 - 125068

Опубликована: Янв. 1, 2025

Язык: Английский

---

Transition Metals@MXenes electrocatalysts for high-performance Lithium–Sulfur batteries under lean electrolyte: A comprehensive review

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160285 - 160285

Опубликована: Фев. 1, 2025

Язык: Английский

---

Enhanced Electrochemical Detection of Nitrite Ions by CTAB-modified Hexagonal Fe-doped SnS2 Nanosheets in Water

Materials Research Bulletin, Год журнала: 2025, Номер unknown, С. 113344 - 113344

Опубликована: Фев. 1, 2025

Язык: Английский

---

Bimetallic organic framework nanocages enhance polysulfide trapping and redox kinetics in lithium–sulfur batteries

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A conductive CoZn-based MOF (CoZn-HTP) with hollow nanocage structures was prepared to suppress polysulfide shuttling and improve sulfur utilization cycling stability.

Язык: Английский

---

Review on MXenes-Based Electrocatalysts for High-Energy-Density Lithium–Sulfur Batteries

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Апрель 10, 2025

Abstract Lithium–sulfur batteries (LSBs) hold significant promise as advanced energy storage systems due to their high density, low cost, and environmental advantages. However, despite recent advancements, practical density still falls short of the levels required for commercial viability. The is critically dependent on both sulfur loading amount electrolyte used. High-sulfur coupled with lean conditions presents several challenges, including insulating nature Li 2 S, insufficient absorption, degradation cathode structure, severe lithium polysulfide shuttling, slow redox reaction kinetics, instability metal anode. MXenes-based materials, metallic conductivity, large polar surfaces, abundant active sites, have been identified promising electrocatalysts improve reactions in LSBs. This review focuses significance challenges associated high-sulfur electrolytes LSBs, highlighting advancements aimed at optimizing cathodes anodes. It provides a comprehensive discussion MXenes materials substrates goal enhancing understanding regulatory mechanisms that govern conversion plating/stripping behavior. Finally, explores future opportunities electrocatalysts, paving way application

Язык: Английский

---

Optimizing Adsorption‐Catalysis Synergy to Accelerate Sulfur Conversion Kinetics in Room‐Temperature Na‐S Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Room‐temperature sodium‐sulfur (RT Na‐S) batteries are expected to become the next‐generation energy storage system due their ultrahigh theoretically density of 1274 Wh kg −1 , abundant sulfur resource, and low cost. However, practical application is hindered by challenges severe shuttle effect sluggish S conversion kinetics. In this study, a series nano‐sized nickel‐based chalcogenides designed fabricated as electrocatalysts for cathode. The p orbitals originated from different anions show great on partial‐filled d orbital metal Ni site, which further regulates electronic states catalytic site. Theoretical experimental results confirm excellent electrocatalytic performance NiSe electrocatalyst with reaction barriers, moderate adsorption capability, strong ability, consistent Sabatier's principle. optimized catalyst presents high reversible capacity 720.4 mAh g durability over 200 cycles at 0.2 A retained 401.4 after 1000 2 in RT Na‐S batteries. This work balancing toward polysulfides via modulation d/p active sites.

Язык: Английский

---

Synergistic coordination effect of Co@N active sites and multilevel porous carbon confinement engineering for boosting catalytic conversion kinetics of lithium polysulfides in Li-S batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163176 - 163176

Опубликована: Апрель 1, 2025

Язык: Английский

---

Regulated Li₂S Deposition through Evolution of Silver Chloride for Li–S Batteries

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Май 14, 2025

Lithium-sulfur (Li-S) batteries hold great promise as a next-generation energy storage system due to their high theoretical density (2600 W h kg-1), surpassing conventional lithium-ion batteries. However, performance is often limited by the intrinsic transformation of soluble lithium polysulfides (LiPSs) into short-chain insoluble sulfur species (Li2S2/Li2S), which induces significant cell polarization, particularly under lean-electrolyte conditions. Through galvanic replacement reaction (GRR), enabling precise tailoring interfacial properties, AgCl-PVP nanocubes (NCs) were synthesized and utilized host materials. These materials demonstrated effective entrapment LiPSs, confirmed in situ electrochemical visualization. Furthermore, NCs significantly reduced whole-cell during Li2S nucleation step, validated galvanostatic intermittent titration technique across depth discharge. Under conditions (5.6 μL mg-1), cathode exhibited specific capacity (563.62 mA g-1 at 0.2 C) with low-capacity decay rate (1.81% per cycle). results demonstrate potential GRR-engineered nanostructures material for enhancing practical applicability Li-S

Язык: Английский

---