Chemical Research in Chinese Universities, Journal Year: 2024, Volume and Issue: 40(3), P. 437 - 450
Published: March 11, 2024
Language: Английский
Energy storage materials, Journal Year: 2024, Volume and Issue: 67, P. 103328 - 103328
Published: March 1, 2024
Language: Английский
Citations
52
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155915 - 155915
Published: Sept. 1, 2024
Language: Английский
Citations
43
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 487, P. 150490 - 150490
Published: March 16, 2024
Language: Английский
Citations
31
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(41)
Published: July 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.
Language: Английский
Citations
28
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 14, 2024
Lithium-sulfur batteries (LSB) with high theoretical energy density are plagued by the infamous shuttle effect of lithium polysulfide (LPS) and sluggish sulfur reduction/evolution reaction. Extensive research is conducted on how to suppress effects, including physical structure confinement engineering, chemical adsorption strategy, design redox catalysts. Recently, rational mitigate effects enhance reaction kinetics based field has been widely studied, providing a more fundamental understanding interactions species. Herein, focused their methods mechanisms interaction summarized systematically LPS. Overall, working principle LSB system, origin effect, kinetic trouble in briefly described. Then, mechanism application materials concepts external field-assisted elaborated, electrostatic force, built-in electric field, spin state regulation, strain magnetic photoassisted other strategies pivotally elaborated discussed. Finally, potential directions enhancing performance weakening high-energy anticipated.
Language: Английский
Citations
20
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 28, 2025
Abstract Selenium, with its superior conductivity, serves as a promising cathode material in lithium–selenium (Li–Se) and sodium–selenium (Na–Se) batteries, exhibiting faster electron transfer processes volumetric capacity. Nonetheless, challenges such volume expansion, the shuttle effect, slow redox reaction kinetics, low conductivity of discharged products still hinder their commercial application. Extensive research has been conducted on design optimization materials to overcome these issues. This review summarizes latest advancements Se within Li/Na–Se systems, based electrochemical mechanisms batteries origins related challenges. The comprehensive principle advanced stable selenium cathodes is put forward, key role carbon structure analyzed, strategies improve affinity selenide kinetics are discussed. Additionally, it introduces representative polymer‐based metal–organic framework (MOF)‐based cathodes. Some potential modification for active also highlighted, including sulfide composite lithium cathodes, which can significantly enhance Se‐based batteries. Finally, existing research, insights directions future development proposed.
Language: Английский
Citations
2
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 17, 2025
Abstract Sulfur offers a high‐energy‐density, low‐cost, and sustainable alternative to traditional battery cathodes, but its practical use is limited by sluggish uneven reaction polysulfide dissolution, necessitating electrocatalytic additives enhance conversion efficiency. Generating unpaired spin electrons has proven effective in enhancing performance Co‐based electrocatalysts. These increase adsorption weakening S─S bonds, facilitating their cleavage during sulfur reduction reactions. This work extends the strategy Fe–Ni‐based catalysts. The synthesis of NiSe 2 Fe‐doped particles reported investigate impact Fe doping on electronic structure, catalytic activity, introduced as coating cathode side Li–S (LSB) separator. Experimental analyses first‐principles calculations reveal that Fe‐rich cores surface density states at Fermi level introduce electrons, boosting LiPS conversion. synergistic effects significantly improve performance, cycling stability, overall LSB cells. Specifically, cells based ‐based separators achieve specific capacities 1483 mAh g⁻¹ 0.1C 1085 1C, along with remarkable retaining 84.4% capacity after 800 cycles. High sulfur‐loading tests further validate multifunctional membrane's effectiveness, showing significant retention reduced loss.
Language: Английский
Citations
2
Batteries & Supercaps, Journal Year: 2023, Volume and Issue: 7(4)
Published: Dec. 20, 2023
Abstract Lithium‐sulfur (Li−S) batteries are one of the most potential new energy storage systems due to their high theoretical capacity (1675 mAh g −1 ) and density (2600 Wh kg ). However, application Li−S is currently restricted dissolution polysulfides in electrolyte, which leads shuttle effect lithium (LiPSs). Here, we present a Co@MXene‐derived TiO 2 heterostructure decorated on carbon sheets derived from folic acid (Co@M‐TiO /C) as functional separator coating trap polysulfide accelerate redox kinetics batteries. The interconnected porous structure with good electrical conductivity boasts rapid ion diffusion efficient electron transfer within battery. By attaching Co MXene‐derived dual‐phased two‐dimensional sheets, heterostructures formed, ensuring complete exposure active sites. These exhibit catalytic effects LiPSs excellent adsorption capabilities, effectively inhibiting accelerating kinetics. Considering these advantages, battery optimized Co@M‐TiO /C modified demonstrates specific 1481.7 at 0.2 C, superior rate performance 855.5 cycling under sulfur load 4.4 mg cm −2 .
Language: Английский
Citations
29
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151285 - 151285
Published: April 15, 2024
Language: Английский
Citations
15
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153813 - 153813
Published: July 11, 2024
Language: Английский
Citations
12