Quasi-solid-state silicon-air batteries with high capacities and wide-temperature adaptabilities

Energy storage materials, Год журнала: 2024, Номер 71, С. 103656 - 103656

Опубликована: Июль 23, 2024

Язык: Английский

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Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

Advanced Functional Materials, Год журнала: 2024, Номер 34(36)

Опубликована: Март 10, 2024

Abstract The compositing strategy offers great potential in designing bifunctional oxygen electrocatalysts for Zn–air batteries. Recent reports reveal that the couple of RuO 2 , serving as a benchmark evolution reaction (OER) catalyst, with other reduction (ORR) catalysts is wise choice to build highly efficient electrocatalysts. However, design criteria ORR and OER activities ‐based composite are still unclear. Herein, series transition metal (Fe, Co, Mn, Ni)‐doped spinel oxides designed support nanorods exploring mechanism. Through advanced technology, it considered increasing content binding energy Co 3+ enhancing oxidation state Ru 4+ an promote /Co‐based oxide catalysts. It found coupling Mn‐doping 3 O 4 (CMO) supports can induce highest catalytic ORR/OER excellent performance rechargeable Operando electrochemical impedance spectroscopy theoretical calculation further prove synergistic effect between CMO originated from overflow overcome large barrier desorption on during adsorption ORR.

Язык: Английский

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Unraveling the Tandem Effect of Nitrogen Configuration Promoting Oxygen Reduction Reaction in Alkaline Seawater

Advanced Energy Materials, Год журнала: 2024, Номер 14(24)

Опубликована: Апрель 10, 2024

Abstract Developing seawater‐based high‐performance oxygen reduction reaction (ORR) electrocatalysts is meaningful to renewable energy storage and conversion, the Fe‐based derivatives encapsulated by nitrogen (N) doped carbon are typical representative. Nevertheless, unrevealing mechanism of N configuration ORR activity chlorine resistance still a great challenge. In this work, feasible strategy developed prepare controllable pyridinic/pyrrolic‐N carbon‐coated (Fe x N‐NC). Drawing support from H 3 PO 4 blocking based in situ Fourier transform infrared spectroscopy (FTIR) test density‐functional theory (DFT) calculation, tandem effect pyridinic‐N pyrrolic‐N on proved. Additionally, low hydrogen peroxide (H 2 O ) yield 4e − pathway Fe N‐NC demonstrate that doping effectively reduces adsorption Cl , which consistent with DFT. The half‐wave potential (E 1/2 for reaches 0.874 V alkaline seawater, ZABs assembled as air cathode deliver remarkable power density (162 mW cm −2 ), along excellent long‐term durability (>400 h).

Язык: Английский

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Atomic Cobalt Metal Centers with Asymmetric N/B‐Coordination for Promoting Oxygen Reduction Reaction

Advanced Functional Materials, Год журнала: 2024, Номер 34(48)

Опубликована: Июль 5, 2024

Abstract Cobalt single atom catalysts (SACs) have exhibited promising performance in both the oxygen reduction reaction (ORR) and evolution (OER), positioning them as potential dual‐functional for Zn‐air battery. However, long‐standing challenge lies achieving satisfactory dual‐functionality stability of these SACs. In this study, to optimize 4e ‒ ORR performance, boron (B) atoms are employed with low electronegativity regulate structure Co–N–C catalytic center. This resulted formation an asymmetrically coordinated Co metal center catalyst (Co‐N 3 B). Compared Co‐N 4 , B lower free energy stronger adsorption toward * O species, effectively suppressing 2e pathway at cobalt site preventing corrosion induced by hydrogen peroxide (H 2 ) reactions, thereby enhancing stability. situ attenuated total reflectance surface‐enhanced infrared absorption spectroscopy (ATR‐SEIRAS) further validated excellent interaction between active centers intermediates. Furthermore, self‐made rechargeable zinc‐air battery demonstrated remarkable discharge peak power density (≈253 mW cm ‒2 ), (≈819 mAh g ‒1 cyclic exceeding 110 h. study provides new insights into constructing atomic‐level precision offers strong references practical applications storage convension electrocatalysts.

Язык: Английский

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Promoting Electrocatalytic Oxygen Reactions Using Advanced Heterostructures for Rechargeable Zinc–Air Battery Applications

ACS Nano, Год журнала: 2024, Номер 18(33), С. 21651 - 21684

Опубликована: Авг. 12, 2024

In order to facilitate electrochemical oxygen reactions in electrically rechargeable zinc-air batteries (ZABs), there is a need develop innovative approaches for efficient electrocatalysts. Due their reliability, high energy density, material abundance, and ecofriendliness, ZABs hold promise as next-generation storage conversion devices. However, the large-scale application of currently hindered by slow kinetics reduction reaction (ORR) evolution (OER). development heterostructure-based electrocatalysts has potential surpass limitations imposed intrinsic properties single material. This Account begins with an explanation configurations fundamentals electrochemistry air electrode. Then, we summarize recent progress respect variety heterostructures that exploit bifunctional electrocatalytic overview impact on ZAB performance. The range heterointerfacial engineering strategies improving ORR/OER performance includes tailoring surface chemistry, dimensionality catalysts, interfacial charge transfer, mass transport, morphology. We highlight multicomponent design take these features into account create advanced highly active catalysts. Finally, discuss challenges future perspectives this important topic aim enhance activity batteries.

Язык: Английский

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Advances and Challenges in Perovskite Oxide Design for High‐Performance Zinc–Air Batteries: Integrating Experimental Strategies and Machine Learning

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Abstract Rechargeable zinc–air batteries (ZABs) have emerged as highly promising energy storage systems due to their exceptional theoretical density, high power cost‐effectiveness, and environmental safety. The current focus of ZAB research is on developing high‐performance bifunctional oxygen electrocatalysts. Among these, perovskite oxide, a transition metal oxide with tunable electronic structures intrinsic catalytic activity, has gained significant attention for its application in ZABs. Recently, advancements introduced various strategies enhance the activity stability oxides. In this review, design oxides from both experimental perspectives systematically examined. strategy electrocatalysts first summarized, including composition strategy, morphology regulation, heteroatom doping, vacancy. Furthermore, latest advances machine learning screening special properties storage/conversion devices, especially ZABs, are presented. Finally, insights into future development ZABs offered, aiming provide comprehensive guideline precise metal–air batteries.

Язык: Английский

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Single-phase ruthenium-based oxide with dual-atoms induced bifunctional catalytic centers enables highly efficient rechargeable Zn-air batteries

Energy storage materials, Год журнала: 2024, Номер 68, С. 103341 - 103341

Опубликована: Март 11, 2024

Composite strategies for constructing dual-atom sites at the hetero-interface provide considerable prospects designing efficient bifunctional oxygen catalysts. Given insufficient interface site and instability of phase interface, we need to develop more efficiently utilizing site. Here, report a doping strategy construct abundant in single-phase oxide Ru/Mn bond formation enables electronic interaction between Ru Mn, which reduces oxidation state meanwhile constructs electron-rich states Mn sites. DFT calculation was further applied explore reaction mechanism. We found that atoms serve as reduction evolution catalytic respectively facilitate adsorption OH* desorption. More importantly, co-adsorption OOH* on Mn/Ru dual can greatly enhance activity. The resulting Mn-RuO2 catalyst exhibits an ultra-low ORR/OER overpotential just 0.65 V, substantially lower than RuO2 MnOx. Remarkably, also demonstrates excellent stability, with minimal ORR decay after repeated OER cycling. Rechargeable zinc-air batteries using Mn-doped achieve super-durability 2000 cycles final energy efficiency retention 87.5%.

Язык: Английский

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Highly active air electrode catalysts for Zn‐air batteries: Catalytic mechanism and active center from obfuscation to clearness

Carbon Neutralization, Год журнала: 2024, Номер 3(4), С. 501 - 532

Опубликована: Июнь 4, 2024

Abstract Carbon‐based materials have been found to accelerate the sluggish kinetic reaction and are largely subject overall Zn‐air batteries (ZABs) property, while their full catalytic mechanism is still not excavated because of indistinct internal structure immature in‐situ technology. Up now, systematic methods utilized study design promising high‐performance carbon‐based catalysts. To resolve real active units mechanism, developing molecular catalyst a significant strategy. Herein, review will initiate briefly introduce working principle composition ZABs. An important statement correspondingly provided about typical mechanisms for air cathode material. It also presents tremendous endeavors on performance stability Furthermore, combined with theoretical calculation, self‐defined sites analyzed understand character, where subsequently summarized discussed through highlighting unambiguous controllable structure, in hope surfacing optimum catalyst. Building fundamental understanding catalysts, this expected provide guidance direction toward designing future mechanistic studies ORR electrocatalysts.

Язык: Английский

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Regulating Reconstruction‐Engineered Active Sites for Accelerated Electrocatalytic Conversion of Urea

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(36)

Опубликована: Июнь 14, 2024

Reconstruction-engineered electrocatalysts with enriched high active Ni species for urea oxidation reaction (UOR) have recently become promising candidates energy conversion. However, to inhibit the over-oxidation of brought by valence state Ni, tremendous efforts are devoted obtaining low-value products nitrogen gas avoid toxic nitrite formation, undesirably causing inefficient utilization cycle. Herein, we proposed a mediation engineering strategy significantly boost high-value formation help close loop employment economy. Specifically, platinum-loaded nickel phosphides (Pt-Ni

Язык: Английский

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Recent Progress and Prospects of Manganese–Nitrogen–Carbon Electrocatalysts for Oxygen Reduction Reaction

Energy & Fuels, Год журнала: 2024, Номер 38(12), С. 10589 - 10612

Опубликована: Июнь 7, 2024

The oxygen reduction reaction (ORR) holds significant importance in the electrochemical processes of energy conversion systems. kinetics ORR are sluggish as it is involved multistep reactions. It imperative to investigate electrocatalysts with outstanding performance and durability accelerating their kinetics. Manganese–nitrogen–carbon (Mn–N–C) materials offer advantages including efficient atom utilization easily tunable coordination structures, rendering them promising candidates for enhancing catalytic activity. mini-review provides a concise overview fundamental principles underlying ORR. Then, three strategies regulating structure summarized improve activity Mn–N–C catalysts: adjusting number N atoms around Mn atoms, doping nonmetal metal atoms. Finally, this outlines challenges prospects associated catalyst This anticipated deepen comprehension readers by presenting targeted optimization methods regulate configuration catalysts.

Язык: Английский

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