Recent Advances in Probing Electron Delocalization in Conjugated Molecules by Attached Infrared Reporter Groups for Energy Conversion and Storage DOI Creative Commons
Deepak Devadiga, Juchao Yan, Dheeraj Devadiga

и другие.

ACS Applied Energy Materials, Год журнала: 2025, Номер 8(4), С. 1942 - 1963

Опубликована: Фев. 6, 2025

This review article reports an overview of the recent developments in field electron delocalization study organic conjugated molecules by utilizing vibration frequencies exhibited attached functional groups such as nitrile (−C≡N), alkyne (−C≡C−), or carbonyl (−C═O). A brief introduction to delocalization, methods for study, and their importance is given first, followed application infrared spectroscopy molecules. Details with various reporter have been explained respective subsections based on groups. All reported structured presented properties studied using group. Finally, outlook this recently promising, exciting, interesting probing provided.

Язык: Английский

MoC‐MoSe2 Heterostructures as Multifunctional Catalyst Toward Promoting the Stepwise Polysulfide Conversion for Lithium‐Sulfur Batteries DOI

Wenlong Xia,

Yufang Chen, Mingyu Han

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(33)

Опубликована: Апрель 10, 2024

Abstract Catalyzing polysulfides conversion for lithium‐sulfur batteries is an efficient strategy to overcome the sluggish kinetics of as well its serious shuttling effect. Due multistep and complicated phase transformation sulfur species, monofunctional catalyst can hardly promote overall redox process. Herein, a molybdenum‐based heterostructure proposed, that facilitates entire reduction process by tandemly catalyzing liquid‐liquid liquid‐solid conversion. It uncovered MoC physiochemically immobilizes soluble long‐chain polysulfide accelerates between S 8 Li 2 4 through adsorbing extending S─S bond distance. Then, precipitation enhanced facilitating migration from MoSe . This driven internal electric field at heterogeneous interface low diffusion energy barrier on Li2S Moreover, MoC‐MoSe exhibits smallest degree disproportionation throughout Consequently, cell with /C/S cathode delivers initial discharge‐specific capacity 841.1 mAh g −1 long‐term cycling stability attenuation rate 0.08% per cycle 1.0 C. work presents novelty view design rational multifunction sequentially accelerating stepwise polysulfides.

Язык: Английский

Процитировано

50

3d‐Orbital High‐Spin Configuration Driven From Electronic Modulation of Fe3O4/FeP Heterostructures Empowering Efficient Electrocatalyst for Lithium−Sulfur Batteries DOI
Zhengyi Wang, Wenzhi Huang, Hao Wu

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(49)

Опубликована: Авг. 29, 2024

Abstract The intricate lithium polysulfides (LiPSs) shuttle and uncontrollable dendrite growth critically hinder the commercialization of lithium−sulfur (Li−S) batteries. rational orderly assignment multi‐electron induced flow is critical link in sulfer redox reaction. Herein, yolk‐shell Fe 3 O 4 /FeP@C heterostructure nanoreactors are fabricated to modulate electronic structure, including spin‐related charge behavior orbital orientation control, which can demonstrate interaction between catalytic activity spin‐state conformation. spin splitting induces electron transition from low‐spin high‐spin, where non‐degenerate orbitals contribute energy level up‐shift, guiding migration FeP , activating more states d orbitals. Spin polarization guides sulfur closed‐loop conversion, confirmed by DFT simulations situ Raman. Hence, electrochemical performances remarkable at ultra‐high current density loading. Even an initial specific capacity 928.5 mAh g −1 a Li−S pouch cell reveals practical prospect /FeP@C/PP separator. Li//Li symmetric cycles steadily for 4000 h, confirming interlayer simultaneously promotes evolution kinetics sieves ions. This work deciphers principles spin‐orbit coupling, achieving topological modulation “charge−spin−orbit” toward electrocatalysts.

Язык: Английский

Процитировано

24

Immobilizing Single Atom on High-Entropy Oxides as Separator Regulators for Catalyzing Low-Temperature Lithium-Sulfur Battery DOI

F. Na,

Xiang Li, J Wang

и другие.

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104228 - 104228

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

3

Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery DOI Creative Commons
Zhibin Cheng, Jie Lian, Jindan Zhang

и другие.

Advanced Science, Год журнала: 2024, Номер 11(31)

Опубликована: Июнь 18, 2024

Abstract Lithium–sulfur (Li–S) batteries have attracted significant attention in the realm of electronic energy storage and conversion owing to their remarkable theoretical density cost‐effectiveness. However, Li–S continue face challenges, primarily severe polysulfides shuttle effect sluggish sulfur redox kinetics, which are inherent obstacles practical application. Metal‐organic frameworks (MOFs), known for porous structure, high adsorption capacity, structural flexibility, easy synthesis, emerged as ideal materials separator modification. Efficient interception/conversion ability rapid lithium‐ion conduction enabled by MOFs modified layers demonstrated batteries. In this perspective, objective is present an overview recent advancements utilizing pristine MOF modification separators The mechanisms behind enhanced electrochemical performance resulting from each design strategy explained. viewpoints crucial challenges requiring resolution also concluded Moreover, some promising concepts based on proposed enhance investigate adsorption/conversion mechanisms. These efforts expected contribute future advancement advanced

Язык: Английский

Процитировано

17

Electron delocalization-enhanced sulfur reduction kinetics on an MXene-derived heterostructured electrocatalyst DOI
Yunmeng Li, Yinze Zuo, Xiang Li

и другие.

Nano Research, Год журнала: 2024, Номер 17(8), С. 7153 - 7162

Опубликована: Май 15, 2024

Язык: Английский

Процитировано

15

Regulating the P-band center of SnS2-SnO2 heterostructure to boost the redox kinetics for high-performance lithium-sulfur battery DOI
Wendong Liu, Junan Feng,

Chaoyue Zhang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151526 - 151526

Опубликована: Апрель 22, 2024

Язык: Английский

Процитировано

11

Spodumene nanosheets@ZrO2-SiO2 heterostructure nanofibers modified separator for long-cycle lithium-sulfur batteries DOI
Lin Li,

Bin Yue,

Yingying Bao

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153619 - 153619

Опубликована: Июнь 29, 2024

Язык: Английский

Процитировано

11

Bidirectional tandem catalysis coupled with interface engineering and Se vacancies for accelerating the polysulfide conversion DOI
Xiaoya Zhou, Wei Mao, Xuan Cao

и другие.

Nano Energy, Год журнала: 2024, Номер 125, С. 109563 - 109563

Опубликована: Март 31, 2024

Язык: Английский

Процитировано

9

Li-current collector interface in lithium metal batteries DOI
Tianyu Wang,

Dingyi Zhao,

Keyue Liang

и другие.

Nano Research, Год журнала: 2024, Номер 17(10), С. 8706 - 8728

Опубликована: Июль 24, 2024

Язык: Английский

Процитировано

8

A Click Chemistry Strategy Toward Spin‐Polarized Transition‐Metal Single Site Catalysts for Dynamic Probing of Sulfur Redox Electrocatalysis DOI
Weijie Chen, Yue Yu, Yu Du

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 17, 2024

Abstract Catalytic conversion of lithium polysulfides (LiPSs) is a crucial approach to enhance the redox kinetics and suppress shuttle effect in lithium–sulfur (Li–S) batteries. However, roles typical heterogenous catalyst cannot be easily identified due its structural complexity. Compared with distinct sites single atom catalysts (SACs), each active site (SSCs) identical uniform their spatial energy, binding mode, coordination sphere, etc. Benefiting from well‐defined structure, iron phthalocyanine (FePc) covalently clicked onto CuO nanosheet prepare low spin‐state Fe SSCs as model for Li–S electrochemistry. The periodic polarizability evolution Fe‐N bonding probed during sulfur reaction by situ Raman spectra. Theoretical analysis shows decreased d‐band center gap (Δd) delocalization d xz /d yz after axial click confinement. Consequently, batteries exhibit capacity decay rate 0.029% per cycle at 2 C. universality this methodological demonstrated series M (M = Mn, Co, Ni) similar variation electronic configuration. This work provides guidance design efficient electrocatalysis

Язык: Английский

Процитировано

8