Ensemble effect in porous bimetallic N/C nanocage-grafted CNTs for improved Li-O2 battery Cathodes DOI
Liu Tie

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177788 - 177788

Published: Nov. 1, 2024

Language: Английский

Rationally tuning the oxidation state of the open active sites in Co-based MOFs to enhance the kinetics of Li-O2 batteries DOI
Peng Su, Xingzi Zheng, Si‐Ao Li

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

Citations

1
Open Active Sites in Ni-Based MOF with High Oxidation States for Electrooxidation of Benzyl Alcohol DOI

Wenli Su,

Xingzi Zheng, Wei Xiong

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(27), P. 12572 - 12581

Published: June 26, 2024

The kinetics of electrocatalytic reactions are closely related to the number and intrinsic activity active sites. Open sites offer easy access substrate allow for efficient desorption diffusion reaction products without significant hindrance. Metal-organic frameworks (MOFs) with open show great potential in this context. To increase density sites, trimesic acid was utilized as a ligand anchor more Ni situ construct nickel foam-loaded Ni-based MOF electrocatalyst (Ni-TMA-MOF/NF). When tested an benzyl alcohol oxidation, Ni-TMA-MOF/NF exhibited lower overpotential superior durability compared terephthalic (Ni-PTA-MOF/NF) Ni(OH)

Language: Английский

Citations

5
Mutually Activated 2D Ti0.87O2/MXene Monolayers Through Electronic Compensation Effect as Highly Efficient Cathode Catalysts of Li–O2 Batteries DOI
Dongmei Zhang, Guoliang Zhang,

Ruoqing Liu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

Abstract 2D materials exhibit remarkable electrochemical performance as the cathode catalyst in lithium–oxygen batteries (LOBs). Their catalytic capability mainly derives from their surface with tunable chemistry and unique electronic states. Herein, Ti 0.87 O 2 3 C MXene monolayers are applied to construct a face/face heterostructure enhance LOBs. It is demonstrated that compensation O‐terminated side achieved through built‐in electric field overlap of d p orbitals between units. As result, ORR/OER activity improved /MXene heterojunction due modulated ‐band center optimizes s–p coupling key intermediate LiO . The presents structural stability long‐term cycling life 425 cycles (2534 h) at 200 mA g −1 407 1000 fixed capacity 600 mAh , being nearly five three times higher than pure cathodes, respectively.

Language: Английский

Citations

4
Nanocubes Comprised of Co3O4/CoFe2O4/Nitrogen-Doped Carbon for Lithium–Oxygen Batteries DOI

K. Han,

Shijie Deng,

Mingwei Cui

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Designing bifunctional catalysts that improve the efficiency of both oxygen reduction (ORR) and evolution reactions (OER) is a strategy to enhance performance lithium–oxygen batteries (LOBs). Co3O4/CoFe2O4/nitrogen-doped carbon heterostructures were synthesized as electrocatalysts using coprecipitation calcination methods. The morphology composite was characterized by hollow nanocube shape, which facilitated exposure active sites provided space for Li2O2 storage. At heterogeneous interface, electronic interactions gave rise interfacial charge redistribution. This redistribution not only improved catalytic activity but also induced generation reversible decomposition mixed LiOH discharge products. On this basis, specific capacity when used cathode catalyst 8930 mAh g–1 could be stably cycled 118 cycles, an improvement over single Co3O4 cathode.

Language: Английский

Citations

0
Open active sites of Co-MOF functionalized Ti3C2 MXene heterostructure with the enhanced performance in Li-O2 battery DOI
Xingzi Zheng, Mengwei Yuan,

Peiyuan Su

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162742 - 162742

Published: Feb. 1, 2025

Language: Английский

Citations

0
Recent progress in oxygen electrocatalysts for aprotic lithium-oxygen batteries DOI

Xinxiang Wang,

Kai Wan,

Haoyang Xu

et al.

EnergyChem, Journal Year: 2025, Volume and Issue: unknown, P. 100150 - 100150

Published: March 1, 2025

Language: Английский

Citations

0
Co(acac)2-Mediated Regulation of Li2O2 Gradient Growth in Lithium–Oxygen Batteries DOI
Xingzi Zheng,

Peiyuan Su,

Jingshen Xu

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

In Li-O2 batteries, Li2O2 serves as the primary cathodic material but its wide band gap imparts insulating properties. Regulating composition and morphology of enables construction a novel structure with exceptional electrochemical performance. Herein, we introduce an organic salt containing cobalt ions, acetylacetonate (Co(acac)2), into electrolyte. We exploit cation migration characteristics under electric field to facilitate generation decomposition Co-doped Li2O2, achieving gradient control optimized growth Li2O2. Moreover, Co(acac)2 molecule stabilizes properties LiOx species mitigates side reaction. situ UV-vis XANES spectra reveal direct interactions between O2-/LiO2, highlighting superior reversibility enhanced batteries. Both experimental theoretical results indicate that this battery system exhibits rapid reaction kinetics, reduced overpotential 520 mV extended cyclability, surpassing 400 cycles lower polarization.

Language: Английский

Citations

0
Rational Design of Co Sub-Nano Clusters by Electronic Metal-Support Interaction for Inducing Li2O2 Growth DOI
Xingzi Zheng, Mengwei Yuan,

Ruiyun Xin

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 131, P. 110138 - 110138

Published: Aug. 28, 2024

Language: Английский

Citations

3
Electronic Promoter Breaks the Linear Scaling Relationship：Ultra-Rapid High-Temperature Synthesis of Heterostructured Cos/Sno2@C as a Bifunctional Oxygen Catalyst for Li‐O2 Batteries DOI
Nan Wang,

Tingxue Fang,

Tinghui An

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Ensemble effect in porous bimetallic N/C nanocage-grafted CNTs for improved Li-O2 battery Cathodes DOI
Liu Tie

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177788 - 177788

Published: Nov. 1, 2024

Language: Английский

Citations

0