Triphase Heterogeneous Electrocatalysts of Ni and Co for High‐Performing Li‐O2 Batteries DOI Creative Commons
Shadeepa Karunarathne, Chanaka Sandaruwan, Yasun Y. Kannangara

et al.

EcoMat, Journal Year: 2025, Volume and Issue: 7(3)

Published: Feb. 16, 2025

ABSTRACT The limited energy density of the current Li‐ion batteries restricts electrification transportation to small‐ and medium‐scale vehicles. On contrary, Li‐O 2 (LOBs), with their significantly higher theoretical density, can power heavy‐duty transportation, if sluggish electrode kinetics in these devices be substantially improved. use solid electrocatalysts at cathode is a viable strategy address this challenge, but fail provide sufficient discharge depths cyclability, primarily due formation film‐like product, Li₂O₂, on catalytic sites, which obstructs charge transport gas diffusion pathways. Here, we report that triphase heterogeneous catalyst comprising NiCoP, NiCo S 4 , O assembled into hierarchical hollow architecture (NC‐3@Ni), efficiently modulates morphology orientation facilitating sheet‐like growth Li perpendicular surface. These modifications enable LOB deliver high capacity 25 162 mAh g −1 400 mA along impressive cycling performance, achieving 270 cycles depth 1000 exceeding 1350 h continuous operation. This promising performance attributed presence individual electrophilic nucleophilic phases within microstructure catalyst, collectively promoting . image

Language: Английский

Identifying the Role of Lewis‐base Sites for the Chemistry in Lithium‐Oxygen Batteries DOI
Chuan Zhao,

Zhongfu Yan,

Bo Zhou

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(32)

Published: June 10, 2023

Abstract Lewis‐base sites have been widely applied to regulate the properties of Lewis‐acid in electrocatalysts for achieving a drastic technological leap lithium‐oxygen batteries (LOBs). Whereas, direct role and underlying mechanism chemistry LOBs are still rarely elucidated. Herein, we comprehensively shed light on pivotal promoting electrocatalytic reaction processes by constructing metal–organic framework containing (named as UIO‐66‐NH 2 ). The density functional theory (DFT) calculations demonstrate can act electron donors that boost activation O /Li during discharged‐charged process, resulting accelerated kinetics LOBs. More importantly, situ Fourier transform infrared spectra DFT firstly convert Li growth from surface‐adsorption solvation‐mediated due capture + upon discharged which weakens adsorption energy towards LiO . As proof concept, LOB based achieve high discharge specific capacity (12 661 mAh g −1 ), low overpotential (0.87 V) long cycling life (169 cycles). This work reveals sites, guide design featuring Lewis‐acid/base dual centers

Language: Английский

Citations

103
Engineering the Electronic Interaction between Atomically Dispersed Fe and RuO 2 Attaining High Catalytic Activity and Durability Catalyst for Li‐O 2 Battery DOI Creative Commons
Zheng Lian, Youcai Lu,

Shaoze Zhao

et al.

Advanced Science, Journal Year: 2023, Volume and Issue: 10(9)

Published: Jan. 22, 2023

Abstract It is significant to develop catalysts with high catalytic activity and durability improve the electrochemical performances of lithium‐oxygen batteries (LOBs). While electronic metal‐support interaction (EMSI) between metal atoms support has shown great potential in field. Hence, effectively performance LOBs, atomically dispersed Fe modified RuO 2 nanoparticles are designed be loaded on hierarchical porous carbon shells (Fe SA ‐RuO /HPCS) based EMSI criterion. revealed that Ru‐O‐Fe 1 structure formed surrounding Ru sites through electron interaction, this could act as ultra‐high driving force center oxygen reduction/evolution reaction (ORR/OER). Specifically, enhances kinetics ORR a certain extent, optimizes morphology discharge products by reducing adsorption energy catalyst for O LiO ; while during OER process, not only greatly OER, but also catalyzes efficient decomposition Li favorable transfer active products. LOBs FeSA‐RuO /HPCS cathodes show an ultra‐low over‐potential, capacity superior durability.

Language: Английский

Citations

45
Constructing Symmetry-Mismatched RuxFe3–xO4 Heterointerface-Supported Ru Clusters for Efficient Hydrogen Evolution and Oxidation Reactions DOI

Xueqin Mu,

Xingyue Zhang, Ziyue Chen

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(3), P. 1015 - 1023

Published: Jan. 12, 2024

Ru-related catalysts have shown excellent performance for the hydrogen evolution reaction (HER) and oxidation (HOR); however, a deep understanding of Ru-active sites on nanoscale heterogeneous support catalysis is still lacking. Herein, click chemistry strategy proposed to design Ru cluster-decorated nanometer RuxFe3–xO4 heterointerfaces (Ru/RuxFe3–xO4) as highly effective bifunctional catalysts. It found that introducing into nanometric Fe3O4 species breaks symmetry configuration optimizes active site in Ru/RuxFe3–xO4 HER HOR. As expected, catalyst displays prominent alkaline HOR with mass activity much higher than commercial Pt/C well robust stability during because strong interaction between cluster support, optimized adsorption intermediate (Had OHad). This work sheds light promsing approach improving electrocatalysis by breaking atomic dimension symmetry.

Language: Английский

Citations

43
Recent advances of electrode materials based on nickel foam current collector for lithium-based batteries – A review DOI
Ali Sadeghi, Ali Ghaffarinejad

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 600, P. 234275 - 234275

Published: March 4, 2024

Language: Английский

Citations

13
New Reaction Pathway of Superoxide Disproportionation Induced by a Soluble Catalyst in Li‐O2 Batteries DOI
Zhuoliang Jiang, Bo Wen, Yaohui Huang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 27, 2023

Abstract Aprotic Li‐O 2 battery has attracted considerable interest for high theoretical energy density, however the disproportionation of intermediate superoxide (O − ) during discharge and charge leads to slow reaction kinetics large voltage hysteresis. Herein, chemically stable ruthenium tris(bipyridine) (RB) cations are employed as a soluble catalyst alternate pathway O its in both processes. RB captures dimer promotes their intramolecular transfer, it decreases barrier from 7.70 0.70 kcal mol −1 . This facilitates processes simultaneously mitigates singlet oxygen related side reactions. These endow with reduced discharge/charge gap 0.72 V prolonged lifespan over 230 cycles when coupled RuO catalyst. work highlights vital role battery.

Language: Английский

Citations

19
Optimizing the adsorption of intermediates through modulating Mn d-band centers by the Mn-Ce heterojunction for high-performance lithium-oxygen batteries DOI

Mengran Xie,

Nan Wang,

Shaoze Zhao

et al.

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 605, P. 234512 - 234512

Published: April 14, 2024

Language: Английский

Citations

8
Asymmetric Catalytic Site Driving LiOH Chemistry for Li–O2 Batteries Based on Cationic Vacancy-Derived Single-Atom Spinel DOI

Shaoze Zhao,

Lina Song,

Mengran Xie

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(10), P. 7332 - 7344

Published: April 25, 2024

The high conductivity and low decomposition potential of LiOH as the discharge product in Li–O2 batteries have garnered significant attention. However, challenges remain developing LiOH-based promoting efficient generation/decomposition LiOH. Here, we propose a strategy to build binder-free cathode for by embedding atomically dispersed Ru onto surface MnCo2O4 (RuSA-MnCo2O4) through defect engineering adsorption–deposition methods, harnessing synergistic benefits spinel single atom terms catalytic activity physical structure. leads slight lattice distortion electron enrichment near Co, breaking long-range ordered symmetrical structure transforming Mn/Co low-activity centers into asymmetrical Ru–O–Co high-activity centers. Compared that MnCo2O4, d-band center RuSA-MnCo2O4 is positioned further away from Fermi level, resulting an increased occupancy antibonding orbitals. This more moderate adsorption energies LiO2* LiOH*, well reduction reaction barrier formation, thereby optimizing kinetics redox reactions. Thanks active regulated RuSA, electrochemical performances were greatly improved, which also provides clever approach development catalysts batteries.

Language: Английский

Citations

8
Advances in bifunctional electrocatalysts towards high-performing Li-air batteries DOI Creative Commons
Shadeepa Karunarathne,

Chamali K. Malaarachchi,

Amr M. Abdelkader

et al.

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 607, P. 234553 - 234553

Published: April 26, 2024

The development of high-performance Li-air batteries (LABs) is an important quest for effectively utilizing high-energy density electric systems. One possible way to achieve this goal by introducing novel bifunctional electrocatalysts at the battery cathode, enhancing cycle life and discharge capacity LABs facilitating fast oxygen reaction kinetics. Understanding catalysts' function evolution essential developing a better-functioning LAB. In review, we discuss fundamentals, mechanisms, key concepts related LAB technology. We then provide critical discussions on recent advances in catalysts used cathodes through material characterization, electrochemical analysis, performance, in-situ ex-situ product DFT calculations, theoretical most up-to-date, thorough, broader discussion subject. These include general modified carbon nanostructures, noble metals, transition metal oxides, nitrides, sulfides, phosphides. Furthermore, special attention given techniques designed enhance catalytic activity modulation electronic structures. Various facet engineering eg electron approaches are explored, including heteroatom doping, alloying, hybridization, stoichiometric optimization, selective growth. Finally, suggest potential prospective pathways future research.

Language: Английский

Citations

8
Constructing Built‐In Electric Field in NiCo2O4‐CeO2 Heterostructures to Regulate Li2O2 Formation Routes at High Current Densities DOI

Renshu Huang,

Zhixiang Zhai,

Xingfa Chen

et al.

Small, Journal Year: 2024, Volume and Issue: 20(30)

Published: Feb. 22, 2024

Abstract Developing catalysts with suitable adsorption energy for oxygen‐containing intermediates and elucidating their internal structure‐performance relationships are essential the commercialization of Li–O 2 batteries (LOBs), especially under high current densities. Herein, NiCo O 4 ‐CeO heterostructure a spontaneous built‐in electric field (BIEF) is designed utilized as cathode catalyst LOBs at density. The driving mechanism electron pumping/accumulation heterointerface studied via experiments density functional theory (DFT) calculations, growth discharge products. results show that BIEF induced by work function difference optimizes affinity LiO promotes formation nano‐flocculent Li , thus improving performance Specifically, exhibits large capacity (9546 mAh g −1 4000 mA ) stability (>430 cycles ), which better than majority previously reported metal‐based catalysts. This provides new method tuning nucleation decomposition inspires design ideal to operate

Language: Английский

Citations

7
Advances in cathode materials for Li-O2 batteries DOI
Pengcheng Xing, Patrick Sanglier, Xikun Zhang

et al.

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 95, P. 126 - 167

Published: March 20, 2024

Language: Английский

Citations

6