Nitrogen-enriched polydopamine analogue-derived defect-rich porous carbon as a bifunctional metal-free electrocatalyst for highly efficient overall water splitting

Zhang, Zheye; Yi, Zhengran; Wang, Juan; Tian, Xin; Xu, Pei; Shi, Gaoquan; Wang, Shuai

doi:10.1039/c7ta03999a

Cited by 70 publications

(26 citation statements)

References 60 publications

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“…Impressively, apart from tuning templates, a slight adjustment in carbon precursors can produce different features in the resulting hollow carbons. [ 152 ] For instance, uniform hollow carbon spheres with a smooth surface and SSA of 653 m 2 g −1 were prepared from pyrolysis of polydopamine‐coated SiO 2 nanospheres. By contrast, when changing polydopamine to N‐enriched dopamine analog, defect‐rich porous carbon spheres were produced with enlarged SSA (1811 m 2 g −1 ), rich pyridinic N and numerous meso/micropores (centered at 0.6–1 and 8 nm) on carbon sphere shells.…”

Section: Hierarchically Porous Carbon Nanostructurementioning

confidence: 99%

Porous Carbons: Structure‐Oriented Design and Versatile Applications

Tian

Zhang

Duan

et al. 2020

Adv Funct Materials

393

141

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Porous carbon materials have demonstrated exceptional performance in a variety of energy-and environment-related applications. Over the past decades, tremendous efforts have been made in the coordinated design and fabrication of porous carbon nanoarchitectures in terms of pore sizes, surface chemistry, and structure. Herein, structure-oriented carbon design and applications are reviewed. The unique properties of porous carbon materials that offer them promising design opportunities and broad applicability in some representative fields, including water remediation, CO 2 capture, lithium-ion batteries, lithium-sulfur batteries, lithium metal anodes, Na-ion batteries, K-ion batteries, supercapacitors, and the oxygen reduction reaction are highlighted. Then, the most up-to-date strategies for structural control and functionalization of porous carbons are summarized, toward tailoring microporous, mesoporous, macroporous, and hierarchically porous carbons with disordered or ordered, amorphous or graphitic structures. Meanwhile, the emerging features of these structures in various applications are introduced where applicable. Finally, insights into the challenges and perspectives for future development are provided.

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Section: Hierarchically Porous Carbon Nanostructurementioning

confidence: 99%

Porous Carbons: Structure‐Oriented Design and Versatile Applications

Tian

Zhang

Duan

et al. 2020

Adv Funct Materials

393

141

View full text Add to dashboard Cite

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“…This catalyst was also used for self-powered electrochemical water splitting (Fig. 8e-g) to demonstrate its great potential for practical applications [188].…”

Section: Carbon-based Metal-free Oer/her Bifunctional Catalysts For Wmentioning

confidence: 99%

Carbon-Based Metal-Free Electrocatalysis for Energy Conversion, Energy Storage, and Environmental Protection

Xiao

Zou

et al. 2018

Electrochem. Energ. Rev.

163

103

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Carbon-based metal-free catalysts possess desirable properties such as high earth abundance, low cost, high electrical conductivity, structural tunability, good selectivity, strong stability in acidic/alkaline conditions, and environmental friendliness. Because of these properties, these catalysts have recently received increasing attention in energy and environmental applications. Subsequently, various carbon-based electrocatalysts have been developed to replace noble metal catalysts for low-cost renewable generation and storage of clean energy and environmental protection through metal-free electrocatalysis. This article provides an up-to-date review of this rapidly developing field by critically assessing recent advances in the mechanistic understanding, structure design, and material/device fabrication of metal-free carbon-based electrocatalysts for clean energy conversion/storage and environmental protection, along with discussions on current challenges and perspectives. Graphical AbstractKeywords Metal-free electrocatalysis · Carbon-based catalysts · Energy conversion and storage · Environmental protection

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“…The N-doped carbon-based electrocatalysts prepared by using CPT for 6 h and 4 h demonstrated impressive HER and OER activities, with the overpotentials of ~ 0.16 and ~ 0.48 V at 10 mA cm −2 , and Tafel slopes of 54.7 and 78.5 mV dec −1 in acidic media, respectively. Additionally, in two-electrode water system, the two N-doped carbon-based electrocatalysts by using CPT for 6 h and 4 h achieved the current density of 10 mA cm −2 with the minimum voltage of 1.82 V, which was smaller than porous carbon-based counterparts (~ 2.0 V) in 0.1 M KOH [117]. The tremendous overall water splitting activity of N-doped carbonbased electrocatalyst might be ascribed to the composition of functional groups attained by using CPT for different reaction time.…”

Section: D Porous Carbon-based Electrocatalysts For Overall Water Spmentioning

confidence: 93%

“…In this regard, a metal-free defect-rich porous carbon (DRPC) bifunctional electrocatalyst having a large surface area of 1811 m 2 g −1 was developed by polymerization reaction, followed by the pyrolysis of polymerized product at 900 °C to demonstrate the overall water splitting (Fig. 9a, b) [117]. It was revealed that the DRPC accompanied immense N-content of 9.3 at % and displayed excellent bifunctional catalytic performances in alkaline media for both HER and OER.…”

Section: D Porous Carbon-based Electrocatalysts For Overall Water Spmentioning

confidence: 99%

Noble metal-free two dimensional carbon-based electrocatalysts for water splitting

Younis

Lyu

Zhao

et al. 2019

BMC Mat

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Noble metal materials are widely employed as benchmark electrocatalysts to achieve electrochemical water splitting which comprises of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). However, the high cost and scarcity limit the wide ranging commercial applications of noble metal-based catalysts. Development of noble metal-free two dimensional (2D) carbon-based materials can not only reduce the consumption of noble metals, but also create materials with the characteristics of high active surface area, abundance, easy functionalization, and chemical stability, which may carve a way to promising electrochemical water splitting. In this review, noble metalfree 2D carbon-based electrocatalysts, including heteroatom (B, S, N, P, F, and O) doped graphene, 2D porous carbons modified with heteroatoms and/or transition metals, and 2D carbon-based hybrids are introduced as cost-effective alternatives to the noble metal-based electrocatalysts with comparable efficiencies to conduct HER, OER, and overall water splitting. This review emphasizes on current development in synthetic strategies and structure-property relationships of noble metal-free 2D carbon-based electrocatalysts, together with major challenges and perspectives of noble metal-free 2D carbon-based electrocatalysts for further electrochemical applications.

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Nitrogen-enriched polydopamine analogue-derived defect-rich porous carbon as a bifunctional metal-free electrocatalyst for highly efficient overall water splitting

Abstract: A carbon-based, bifunctional metal-free water splitting electrocatalyst is prepared using a nitrogen-enriched polydopamine analogue to produce defect-rich porous carbon, which exhibits superb catalytic activities for both the HER and the OER.

Cited by 70 publications

References 60 publications

Porous Carbons: Structure‐Oriented Design and Versatile Applications

Porous Carbons: Structure‐Oriented Design and Versatile Applications

Carbon-Based Metal-Free Electrocatalysis for Energy Conversion, Energy Storage, and Environmental Protection

Noble metal-free two dimensional carbon-based electrocatalysts for water splitting

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