Partial‐Oxidation Enabling Homologous Ru/RuO2 Heterostructures With Proper d‐Dand Center as Efficient and Durable Cathode Catalysts for Ultralong Cycle Life in Li–O2 Batteries DOI
Chaoyang Sun, Fenglong Xiao, Meiyan Li

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract The sluggish cycle kinetics is one of the major obstacles to commercial application Li–O 2 batteries (LOBs), despite their large theoretical energy density. Efficient and long‐term durable cathode catalysts are urgently desired strengthen stability rate performance. Density functional theory calculations reveal that Ru/RuO Mott–Schottky heterostructures can manipulate adsorption capacities intermediates by modulating d‐band center redistribute interfacial charges, enabling efficient redox kinetics, reducing overpotentials, optimizing growth pathway discharge products. Herein, a wet impregnation approach followed partial oxidization Ru nanodots construct homologous as advanced for boosting electrochemical activities LOBs employed. They exhibit superior performance, including high specific capacity (17 120 mAh g −1 at 200 mA ), small overpotential (0.96 V), ultralong lifetime 1209 cycles (>2400 h) 500 . Over 1260‐h stable in air atmosphere demonstrates potential prospects Li‐air batteries. Multiple ex/in situ measurements calculation conducted investigate mechanism performances.

Язык: Английский

Lowering Charge Potential of Li-O2 Battery to 3.25 V through a Facile Lithiation of Pd-CN Cathode Catalyst DOI
Junkai Wang, Daniel Q. Tan, Zhongbo Hu

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 358, С. 124435 - 124435

Опубликована: Июль 26, 2024

Язык: Английский

Процитировано

4
Promoting Oxygen Electrode Reaction Kinetics in Photo-Assisted Li-O2 Batteries Through Heterostructure Design and Built-In Electric Field Construction DOI Creative Commons
Yinglei Tao, Tao Wang,

Xingyu Yu

и другие.

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A composite of bismuth oxyhalide heterojunction incorporated with metal–organic frameworks (MOFs) was engineered on carbon cloth as an efficient bifunctional catalyst to enhance the oxygen electrode reaction in photo-assisted LOBs.

Язык: Английский

Процитировано

4
Tuning D‐Band Center of Vanadium in Constructing Lattice‐Matched Coherent Heterostructure for Enhanced Sodium Storage DOI Creative Commons

Xuexia Song,

Jingjing Wang,

Qinting Jiang

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Abstract A multiphasic K 0.147 Na 4.853 V 12 O 32 /NaV 6 15 @C (KNVO/NVO@C) heterostructure is realized to feature a lattice‐matched coherent interface with strong interfacial electric field in the cathodes, thereby elevating d‐band center and strengthening adsorption transportation of + enhanced capacity. The heterostructured KNVO/NVO@C cathode exhibits an exceptional rate capability (235.2 mAh g −1 at 0.2 C 151.7 10 C) ultralong cycling stability high capacity retention 95% after 1000 cycles 5 C. It found that synergy between structural properties stress generated by work function difference heterointerface upshifts vanadium toward Fermi level, which effectively lowers diffusion barrier, facilitates charge transfer, accelerates reaction kinetics electron/ion transport. calculated coefficient reaches ≈10 −11 cm 2 s , highly exceeding KNVO electrode. These findings offered robust framework for rational engineering develop next‐generation high‐performance energy storage devices.

Язык: Английский

Процитировано

0
Construction of an Oxygen-Vacancy-Rich CeO2@CoO Heterojunction toward High-Performance Lithium–Oxygen Batteries DOI

Yixin Jin,

Yaning Fu,

Shiyu Ma

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 4, 2025

Lithium-oxygen (Li-O2) batteries theoretically possess an exceptional energy density comparable to gasoline (up 3500 W h kg-1), but in practical applications, the discharge products are difficult effectively decompose, which leads clogging of cathode, resulting severe polarization, limited actual capacity, and shortened battery life for Li-O2 batteries. Herein, we construct a highly active stable catalyst with d-f electronic orbit coupling as redox center by anchoring CeO2 onto CoO, simultaneously, oxygen vacancy (Ov) coactivated CoO. By leveraging effects interface engineering defect on structure catalyst, adsorption LiO2 can be adjusted ideal range. This not only avoids surface passivation caused excessively strong binding also overcomes issue sluggish Li2O2 decomposition efficiency due weak energy. Bracingly, CeO2/CoO-based exhibit ultralow charge-discharge was successfully induced nucleate uniformly nanoflower-like shapes, could promote reversible during charging process thereby enhance electrochemical performance Therefore, CeO2@CoO/CC cathode exhibited overpotential 0.57 V achieved high capacity 19,850 mA g-1. work provides important reference designing catalysts regulating growth paths morphologies products.

Язык: Английский

Процитировано

0
Engineering of MnTe/MnO Heterostructures with Interfacial Electric Field Modulation for Efficient and Durable Li–O2 Batteries DOI
Shuai Yin,

Dezhi Yan,

Yiyuan Yan

и другие.

Small, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Design and synthesis of highly active robust bifunctional cathode catalysts for oxygen reduction reaction (ORR) evolution (OER) are vital significance practical applications lithium-oxygen (Li-O

Язык: Английский

Процитировано

2
Construction of Mott-Schottky heterointerface in NC/R-TiO2/CeO2 nanobox for low-frequency electromagnetic wave absorption DOI
Lei Xia, Xiao Jiang, Jun Huang

и другие.

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1010, С. 178065 - 178065

Опубликована: Дек. 12, 2024

Язык: Английский

Процитировано

2
Partial‐Oxidation Enabling Homologous Ru/RuO2 Heterostructures With Proper d‐Dand Center as Efficient and Durable Cathode Catalysts for Ultralong Cycle Life in Li–O2 Batteries DOI
Chaoyang Sun, Fenglong Xiao, Meiyan Li

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract The sluggish cycle kinetics is one of the major obstacles to commercial application Li–O 2 batteries (LOBs), despite their large theoretical energy density. Efficient and long‐term durable cathode catalysts are urgently desired strengthen stability rate performance. Density functional theory calculations reveal that Ru/RuO Mott–Schottky heterostructures can manipulate adsorption capacities intermediates by modulating d‐band center redistribute interfacial charges, enabling efficient redox kinetics, reducing overpotentials, optimizing growth pathway discharge products. Herein, a wet impregnation approach followed partial oxidization Ru nanodots construct homologous as advanced for boosting electrochemical activities LOBs employed. They exhibit superior performance, including high specific capacity (17 120 mAh g −1 at 200 mA ), small overpotential (0.96 V), ultralong lifetime 1209 cycles (>2400 h) 500 . Over 1260‐h stable in air atmosphere demonstrates potential prospects Li‐air batteries. Multiple ex/in situ measurements calculation conducted investigate mechanism performances.

Язык: Английский

Процитировано

1