Formulating N‐Doped Carbon Hollow Nanospheres with Highly Accessible Through‐Pores to Isolate Fe Single‐Atoms for Efficient Oxygen Reduction DOI

Zi‐Hao Liu,

Fei‐Xiang Ma,

Hong‐Shuang Fan

et al.

Small, Journal Year: 2023, Volume and Issue: 20(6)

Published: Oct. 5, 2023

Abstract It is challenging yet promising to design highly accessible N‐doped carbon skeletons fully expose the active sites inside single‐atom catalysts. Herein, mesoporous hollow spheres with regulatable through‐pore size can be formulated by a simple sequential synthesis procedure, in which condensed SiO 2 acted as removable dual‐templates produce both interiors and through‐pores, meanwhile, co‐condensed polydopamine shell served precursor. After that, Fe─N─C (HSs) obtained after rationally implanting Fe single‐atoms. Microstructural analysis X‐ray absorption fine structure reveal that high‐density Fe─N 4 together tiny clusters are uniformly distributed on skeleton abundant through‐pores. Benefitted from arising unique architecture, HSs demonstrate excellent oxygen reduction reaction (ORR) performance alkaline media half‐wave potential up 0.90 V versus RHE remarkable stability, exceeding commercial Pt/C. When employing air‐cathode catalysts, assembled Zn–air batteries deliver high peak power density of 204 mW cm −2 stable discharging voltage plateau over 140 h.

Language: Английский

Bifunctional Single Atom Catalysts for Rechargeable Zinc–Air Batteries: From Dynamic Mechanism to Rational Design DOI

Peng Zhang,

Kuo Chen, Jiaye Li

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(35)

Published: June 7, 2023

Ever-growing demands for rechargeable zinc-air batteries (ZABs) call efficient bifunctional electrocatalysts. Among various electrocatalysts, single atom catalysts (SACs) have received increasing attention due to the merits of high utilization, structural tunability, and remarkable activity. Rational design SACs relies heavily on an in-depth understanding reaction mechanisms, especially dynamic evolution under electrochemical conditions. This requires a systematic study in mechanisms replace current trial error modes. Herein, fundamental oxygen reduction is first presented combining situ and/or operando characterizations theoretical calculations. By highlighting structure-performance relationships, rational regulation strategies are particularly proposed facilitate SACs. Furthermore, future perspectives challenges discussed. review provides thorough SACs, which expected pave avenue exploring optimum effective ZABs.

Language: Английский

Citations

105
Electronic Structure Engineering in NiFe Sulfide via A Third Metal Doping as Efficient Bifunctional OER/ORR Electrocatalyst for Rechargeable Zinc‐Air Battery DOI
Fitri Nur Indah Sari,

Yi‐Cheng Lai,

Yan‐Jia Huang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(21)

Published: Jan. 29, 2024

Abstract Ti, V, Cr, Mn, Co, and Cu, have been investigated as a third dopant in NiFe sulfide for enhanced oxygen evolution reaction (OER)/oxygen reduction (ORR). The effects of on surface electronic structure, conductivity, thermodynamic barrier are addressed discussed. For the OER, X‐ray photoelectron spectroscopy analysis shows that electron transferring from Ni to dopants enhances catalytic performance sulfide. Cu doped exhibits best OER performance. ORR, density functional theory calculation indicates upshift d‐band center (ɛ d ), while Cr downshifts ɛ . Among dopants, V leads optimized structure modification, giving adsorption energy *O Ni, lowest rate determining step ΔG 1 , ORR activity. By considering E 10 ‐E 1/2 together with maximum current limited diffusion NiFeVS OER/ORR bifunctionality. cathodic catalyst has also evaluated zinc air battery, demonstrating specific capacity 698 mAh g −1 power 190 mW cm −2 superior cycle stability 2400 cycles (400 h).

Language: Английский

Citations

51
Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications DOI Creative Commons
Jitendra N. Tiwari, Krishan Kumar, Moein Safarkhani

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(33)

Published: July 1, 2024

Abstract Modifying the coordination or local environments of single‐, di‐, tri‐, and multi‐metal atom (SMA/DMA/TMA/MMA)‐based materials is one best strategies for increasing catalytic activities, selectivity, long‐term durability these materials. Advanced sheet supported by metal atom‐based have become a critical topic in fields renewable energy conversion systems, storage devices, sensors, biomedicine owing to maximum utilization efficiency, precisely located centers, specific electron configurations, unique reactivity, precise chemical tunability. Several offer excellent support are attractive applications energy, medical research, such as oxygen reduction, production, hydrogen generation, fuel selective detection, enzymatic reactions. The strong metal–metal metal–carbon with metal–heteroatom (i.e., N, S, P, B, O) bonds stabilize optimize electronic structures atoms due interfacial interactions, yielding activities. These provide models understanding fundamental problems multistep This review summarizes substrate structure‐activity relationship different active sites based on experimental theoretical data. Additionally, new synthesis procedures, physicochemical characterizations, biomedical discussed. Finally, remaining challenges developing efficient SMA/DMA/TMA/MMA‐based presented.

Language: Английский

Citations

24
Modulating positive charge sites generations and iron oxidation state transitions in FeP4/CoP/C p-n heterojunction toward efficient oxygen evolution DOI

Pandeng Zhao,

Cheng Peng,

Yuancong Luo

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149121 - 149121

Published: Jan. 30, 2024

Language: Английский

Citations

20
Superstructured Carbon with Enhanced Kinetics for Zinc‐Air Battery and Self‐Powered Overall Water Splitting DOI
Jiamin Wei,

Jiali Lou,

Weibo Hu

et al.

Small, Journal Year: 2024, Volume and Issue: 20(24)

Published: Jan. 6, 2024

Abstract The present study proposes a novel engineering concept for the customization of functionality and construction superstructure to fabricate 2D monolayered N‐doped carbon electrocatalysts decorated with Co single atoms or 2 P nanoparticles derived from bimetallic ZnCo‐ZIF precursors. hierarchically porous maximizes exposure accessible active sites, enhances electron/mass transport efficiency, accelerates reaction kinetics simultaneously. Consequently, embedded (Co‐NCS) exhibits remarkable catalytic activity toward oxygen reduction reaction, achieving half‐wave potential 0.886 V versus RHE. Additionally, (Co P‐NCS) demonstrates high both evolution hydrogen delivering low overpotentials 292 mV at 10 mA cm −2 193 respectively. Impressively, when employed in an assembled rechargeable Zn‐air battery, as‐prepared exhibit exceptional performance peak power density 219 mW minimal charge/discharge voltage gap only 1.16 100 . Moreover, cell required drive overall water‐splitting electrolyzer current is merely 1.69 using these catalysts as electrodes.

Language: Английский

Citations

17
Hydrophobic-aerophilic composite catalysts enable the fast-charging Zn-air battery to operate 1200 h at 50 mA cm−2 DOI
Zian Xu, Chuanlai Jiao, Zheng Shu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148798 - 148798

Published: Jan. 18, 2024

Language: Английский

Citations

17
Promoting Electrocatalytic Oxygen Reactions Using Advanced Heterostructures for Rechargeable Zinc–Air Battery Applications DOI
D.L. Qiu, Huihui Wang,

Tingting Ma

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(33), P. 21651 - 21684

Published: Aug. 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.

Language: Английский

Citations

16
Recent advances in the rational design of alkaline OER catalysts: from electronic structures to industrial applications DOI
Ansheng Wang, Wanying Wang,

Jinchao Xu

et al.

Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(21), P. 5187 - 5214

Published: Jan. 1, 2023

Rational design of high-performance OER catalyst based on the fundamental electronic structure to industrial requirements.

Language: Английский

Citations

36
Recent advances in Fe-N-C- and Co-N-C-based materials as bifunctional electrocatalysts for oxygen reduction and oxygen evolution DOI
Huimin Xu, Hongrui Zhu,

Chen‐Jin Huang

et al.

Science China Chemistry, Journal Year: 2023, Volume and Issue: 67(4), P. 1137 - 1160

Published: Dec. 5, 2023

Language: Английский

Citations

35
Reinforcement of Electrocatalytic Oxygen Evolution Activity Enabled by Constructing Silver‐Incorporated NiCo‐PBA@NiFe‐LDH Hierarchical Nanoboxes DOI
Wen Cao, Jie Wu, Chunyan Zhou

et al.

Small, Journal Year: 2023, Volume and Issue: 20(24)

Published: Dec. 29, 2023

Abstract Complicated oxygen evolution reaction (OER) poses the bottleneck in improving efficiency of hydrogen production through water electrolysis. Herein, an integrated strategy to modulate electronic structure NiFe layered double hydroxide (NiFe‐LDH) is reported by constructing Ag‐incorporated NiCo‐PBA@NiFe‐LDH heterojunction with a hierarchical hollow structure. This “double heterojunction” facilitates local charge polarization at interface, thereby promoting electron transfer and reducing adsorption energy intermediates, ultimately enhancing intrinsic activity catalyst. It noteworthy that exchange bias field observed between NiCo‐PBA NiFe‐LDH, which will be conducive regulating spin states metals facilitating triplet oxygen. Additionally, unique nanoboxes provide large specific surface area ensures adequate exposure sites active sites. Profiting from synergistic advantages, overpotential as low 190 mV current density 10 mA cm −2 , Tafel slope 21 dec −1 . Moreover, functional theory (DFT) calculation further substantiated incorporation Ag can effectively reduce reactant intermediates enhance conductivity.

Language: Английский

Citations

24