In-Situ Nanoarchitectonics of Fe/Co LDH over Cobalt-Enriched N-Doped Carbon Cookies as Facile Oxygen Redox Electrocatalysts for High-Rate Rechargeable Zinc–Air Batteries DOI

Nadar Allwyn,

Subramaniam Gokulnath, M. Sathish

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: April 15, 2024

The reality of long-term rechargeable and high-performance zinc–air batteries relies majorly on cost-effective eminent bifunctional electrocatalysts, which can perform both the oxygen reduction reaction (ORR) evolution (OER). Herein, we demonstrate a new approach for synthesis in-situ-grown layered double hydroxide iron cobalt over nanoparticle-enriched nitrogen-doped carbon frame (CoL 2:1) by simple coprecipitation with facile scale-up explore its electrocatalytic ORR OER activity an electrically battery. Consequently, developed composite displays excellent half-wave potential 0.84 V, limiting current density 5.85 mA/cm2, overpotential 320 mV exceptional stability. outstanding bifunctionality index catalyst (ΔE = 0.72 V) inspired us to utilize it as cathode in in-house prototype battery could easily supply specific capacity 804 mAh/g maximum peak power 161 mW/cm2. exhibits attractive charge–discharge profile lesser voltage gap 0.76 V at 10 mA/cm2 durability period 200 h efficiency 97%, surpassed corresponding Pt/C + RuO2-based Further, load 50 be sustained during cycling, revealing A series-connected two CoL 2:1-based effortlessly enlighten pinwheel fan LED panel simultaneously, practicality. high electrical conductivity greater surface area Co/N–C robust attachment Fe/Co LDH preserves active sites, thereby resulting performance. Our method is capable being flexible enough create various Co/N–C-based electrodes, opening up feasible pathway energy density.

Language: Английский

Electronic Modulation of Metal–Organic Frameworks by Interfacial Bridging for Efficient pH‐Universal Hydrogen Evolution DOI
Luqi Wang, Li Song, Zhenyu Yang

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(1)

Published: Oct. 26, 2022

Abstract Designing well‐defined interfacial chemical bond bridges is an effective strategy to optimize the catalytic activity of metal–organic frameworks (MOFs), but it remains challenging. Herein, a facile in situ growth reported for synthesis tightly connected 2D/2D heterostructures by coupling MXene with CoBDC nanosheets. The multifunctional nanosheets high conductivity and ideal hydrophilicity as bridging carriers can ensure structural stability sufficient exposure active sites. Moreover, Co–O–Ti formed at interface effectively triggers charge transfer modulates electronic structure Co‐active site, which enhances reaction kinetics. As result, optimized CoBDC/MXene exhibits superior hydrogen evolution (HER) low overpotentials 29, 41, 76 mV 10 mA cm −2 alkaline, acidic, neutral electrolytes, respectively, comparable commercial Pt/C. Theoretical calculation demonstrates that bridging‐induced electron redistribution optimizes free energy water dissociation adsorption, resulting improved evolution. This study not only provides novel electrocatalyst efficient HER all pH conditions also opens up new avenue designing highly systems.

Language: Английский

Citations

116
Single atom cobalt catalyst derived from co-pyrolysis of vitamin B12 and graphitic carbon nitride for PMS activation to degrade emerging pollutants DOI Creative Commons
Shizong Wang, Jianlong Wang

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 321, P. 122051 - 122051

Published: Oct. 8, 2022

Language: Английский

Citations

107
Robust Electronic Correlation of Co‐CoN4 Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries DOI

Kuixing Ding,

Jiugang Hu, Jia Luo

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(52)

Published: Oct. 10, 2022

Abstract The rational design of bifunctional catalysts with excellent activity and stability toward the oxygen evolution reaction (OER) reduction (ORR) is essential for rechargeable Zn‐air batteries (ZABs). In this study, a facile coordination bridging strategy proposed to construct Co‐CoN 4 hybrid active sites embedded in porous N‐rich carbon nanolamellas (denoted as @NCNs) both ORR OER. Synchrotron X‐ray absorption spectroscopy density functional theory calculations reveal that increased intrinsic ORR/OER activities can be attributed efficient interfacial charge transfer between atomic CoN metallic Co due their robust electronic correlation. situ Raman confirms OER depends on CoOOH intermediates formed during reaction. @NCNs exhibits superior catalytic performance ( E 1/2 = 0.83 V) (η 310 mV at 10 mA cm −2 ) conducted alkaline media. assembled @NCNs‐based ZAB displays an open‐circuit voltage 1.47 V, peak power 118.8 mW , specific capacity 776.7 mAh g −1 outstanding cycling over 1500 cycles. regulation properties contribute electrocatalysts used metal‐air batteries.

Language: Английский

Citations

82
Aerophilic Triphase Interface Tuned by Carbon Dots Driving Durable and Flexible Rechargeable Zn-Air Batteries DOI Creative Commons

Kuixing Ding,

Yu Ye, Jiugang Hu

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Jan. 3, 2023

Efficient bifunctional catalysts for oxygen reduction reaction (ORR) and evolution (OER) are vital rechargeable Zn-air batteries (ZABs). Herein, an oxygen-respirable sponge-like Co@C-O-Cs catalyst with oxygen-rich active sites was designed constructed both ORR OER by a facile carbon dot-assisted strategy. The aerophilic triphase interface of cathode efficiently boosts diffusion transfer. theoretical calculations experimental studies revealed that the Co-C-COC can redistribute local charge density lower energy barrier. displays superior catalytic activities half-wave potential 0.82 V ultralow overpotential 294 mV at 10 mA cm-2 OER. Moreover, it drive liquid ZABs high peak power (106.4 mW cm-2), specific capacity (720.7 mAh g-1), outstanding long-term cycle stability (over 750 cycles exhibits excellent feasibility in flexible all-solid-state ZABs. These findings provide new insights into rational design efficient metal-air batteries.

Language: Английский

Citations

70
Electronic modulation induced by decorating single-atomic Fe-Co pairs with Fe-Co alloy clusters toward enhanced ORR/OER activity DOI Open Access
Ping Li,

Fuqiang Qiang,

Xuehai Tan

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123231 - 123231

Published: Aug. 29, 2023

Language: Английский

Citations

65
Coordination Engineering of Defective Cobalt–Nitrogen–Carbon Electrocatalysts with Graphene Quantum Dots for Boosting Oxygen Reduction Reaction DOI
Di Geng, Yichao Huang, Saifei Yuan

et al.

Small, Journal Year: 2023, Volume and Issue: 19(18)

Published: Jan. 31, 2023

Developing efficient and robust metal-nitrogen-carbon electrocatalysts for oxygen reduction reaction (ORR) is of great significance the application hydrogen-oxygen fuel cells metal-air batteries. Herein, a coordination engineering strategy developed to improve ORR kinetics stability cobalt-nitrogen-carbon (Co-N-C) by grafting oxygen-rich graphene quantum dots (GQDs) onto zeolite imidazole frameworks (ZIFs) precursors. The optimized GQDs-functionalized Co-N-C (G-CoNOC) electrocatalyst demonstrates an increased mass activity, nearly two times higher than that pristine defective electrocatalyst, retains 90.0% after 200 h, even superior commercial Pt/C. Comprehensive investigations demonstrate GQDs can not only decrease carbon defects electrocatalysts, improving electron transfer efficiency resistance destructive free radicals from H2 O2 , but also optimize electronic structure atomic Co active site achieve desired adsorption energy OOH- leading enhanced promoting further reduction, as confirmed theoretical calculations experimental results. Such provides new perspective development highly noble-metal-free ORR.

Language: Английский

Citations

46
Physical upcycling of spent artificial diamond accelerant into bifunctional oxygen electrocatalyst with dual-metal active sites for durable rechargeable Zn–air batteries DOI

Kuixing Ding,

Jiugang Hu, Liming Zhao

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 121, P. 109270 - 109270

Published: Jan. 9, 2024

Language: Английский

Citations

37
Design Principles and Mechanistic Understandings of Non-Noble-Metal Bifunctional Electrocatalysts for Zinc–Air Batteries DOI Creative Commons
Yunnan Gao, Ling Liu, Yi Jiang

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: March 26, 2024

Zinc-air batteries (ZABs) are promising energy storage systems because of high theoretical density, safety, low cost, and abundance zinc. However, the slow multi-step reaction oxygen heavy reliance on noble-metal catalysts hinder practical applications ZABs. Therefore, feasible advanced non-noble-metal electrocatalysts for air cathodes need to be identified promote catalytic reaction. In this review, we initially introduced advancement ZABs in past two decades provided an overview key developments field. Then, discussed working mechanism design bifunctional from perspective morphology design, crystal structure tuning, interface strategy, atomic engineering. We also included studies, machine learning, characterization technologies provide a comprehensive understanding structure-performance relationship pathways redox reactions. Finally, challenges prospects related designing

Language: Английский

Citations

29
2D Metal Porphyrin-Based MOFs and ZIF-8 Composite-Derived Carbon Materials Containing M–Nx Active Sites as Bifunctional Electrocatalysts for Zinc–Air Batteries DOI

Min-Yi Yu,

Yanfang Yao,

Kun Fang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(13), P. 16132 - 16144

Published: March 21, 2024

The main impediment to the development of zinc-air batteries is sluggish kinetics oxygen reduction reaction (ORR) and evolution (OER). Transition metal N-doped carbon catalysts offer a promising alternative noble catalysts, with metal-organic framework (MOF)-derived material being particularly noteworthy. Here, we synthesized M

Language: Английский

Citations

21
Structural Regulation Strategies of Atomic Cobalt Catalysts for Oxygen Electrocatalysis DOI Open Access
Mengyu Chen, Jingqi Guan

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Oxygen electrocatalysis is a core reaction in renewable energy devices, greatly promoting the transformation and upgrading of structure. Nonetheless, performance conversion devices hindered by large overpotential slow kinetics oxygen electrocatalytic reactions. Recently, single‐atom catalysts (SACs) have emerged as promising contenders field because their exceptional metal atom utilization, distinctive coordination environment, adjustable electronic properties. This review presents latest advancements design Co‐based SACs for electrocatalysis. First, OER ORR mechanisms are introduced. Subsequently, strategies regulating structure summarized three aspects, including centers, support carriers. A particular emphasis given to relationship between properties catalysts. Afterward, applications explored. Ultimately, challenges prospects prospected.

Language: Английский

Citations

4