Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Chen, Zhijie; Yun, Sining; Wu, Lan; Zhang, Jiaqi; Shi, Xingdong; Wei, Wei; Liu, Yiwen; Zheng, Renji; Han, Ning; Ni, Bing‐Jie

doi:10.1007/s40820-022-00974-7

Cited by 70 publications

(36 citation statements)

References 215 publications

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“…In recent years, the development of advanced electrode materials and electrochemical cell devices enables the production of valuable chemicals (e.g., H 2 , NH 3 , Cl 2 , and C x H y O z ) from cheap and earth-abundant reactants via the electrochemical way [ 11 ]. Particularly, the synthesis of H 2 O 2 through electrochemical oxygen reduction has proved feasible and achievable [ 12 , 13 ]. In a typical membrane-based flow cell reactor (Fig.…”

Section: Introductionmentioning

confidence: 99%

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Tian,

Deng,

et al. 2023

Nano-Micro Lett.

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An environmentally benign, sustainable, and cost-effective supply of H2O2 as a rapidly expanding consumption raw material is highly desired for chemical industries, medical treatment, and household disinfection. The electrocatalytic production route via electrochemical oxygen reduction reaction (ORR) offers a sustainable avenue for the on-site production of H2O2 from O2 and H2O. The most crucial and innovative part of such technology lies in the availability of suitable electrocatalysts that promote two-electron (2e–) ORR. In recent years, tremendous progress has been achieved in designing efficient, robust, and cost-effective catalyst materials, including noble metals and their alloys, metal-free carbon-based materials, single-atom catalysts, and molecular catalysts. Meanwhile, innovative cell designs have significantly advanced electrochemical applications at the industrial level. This review summarizes fundamental basics and recent advances in H2O2 production via 2e–-ORR, including catalyst design, mechanistic explorations, theoretical computations, experimental evaluations, and electrochemical cell designs. Perspectives on addressing remaining challenges are also presented with an emphasis on the large-scale synthesis of H2O2 via the electrochemical route.

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Section: Introductionmentioning

confidence: 99%

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Tian,

Deng,

et al. 2023

Nano-Micro Lett.

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“…Of note, ESM plays a central role in advanced energy systems and environmental remediation techniques. For example, water oxidation, namely, the oxygen evolution reaction (OER), is a key reaction in water electrolysis‐driven hydrogen production techniques and metal–air batteries 2 . The urea/hydrazine oxidation reaction (UOR/HzOR) is important for urine/hydrazine wastewater purification and direct urea/hydrazine fuel cells 3 .…”

Section: Introductionmentioning

confidence: 99%

“…For example, water oxidation, namely, the oxygen evolution reaction (OER), is a key reaction in water electrolysis-driven hydrogen production techniques and metal-air batteries. 2 The urea/hydrazine oxidation reaction (UOR/HzOR) is important for urine/hydrazine wastewater purification and direct urea/hydrazine fuel cells. 3 Moreover, coupling UOR/HzOR with hydrogen evolution reaction (HER) is suggested to realize energy-saving hydrogen production.…”

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confidence: 99%

Design of earth‐abundant amorphous transition metal‐based catalysts for electrooxidation of small molecules: Advances and perspectives

Chen

Han

Zheng

et al. 2023

SusMat

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Electrochemical oxidation of small molecules (e.g., water, urea, methanol, hydrazine, and glycerol) has gained growing scientific interest in the fields of electrochemical energy conversion/storage and environmental remediation. Designing cost-effective catalysts for the electrooxidation of small molecules (ESM) is thus crucial for improving reaction efficiency. Recently, earth-abundant amorphous transition metal (TM)-based nanomaterials have aroused souring interest owing to their earth-abundance, flexible structures, and excellent electrochemical activities. Hundreds of amorphous TM-based nanomaterials have been designed and used as promising ESM catalysts. Herein, recent advances in the design of amorphous TM-based ESM catalysts are comprehensively reviewed. The features (e.g., large specific surface area, flexible electronic structure, and facile structure reconstruction) of amorphous TM-based ESM catalysts are first analyzed. Afterward, the design of various TM-based catalysts with advanced strategies (e.g., nanostructure design, component regulation, heteroatom doping, and heterostructure construction) is fully scrutinized, and the catalysts' structure-performance correlation is emphasized. Future perspectives in the development of cost-effective amorphous TM-based catalysts are then outlined. This review is expected to provide practical strategies for the design of next-generation amorphous electrocatalysts.

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“…Alkaline water electrolysis (AWE), featured with novel composite diaphragms and ion-exchange membranes, has become one of the most promising and economical hydrogen production technology through renewable or nuclear power sources for storing intermittent energy and accelerating carbon neutrality. − The central task of further promoting the industrialized applications of this technology is to develop high-performance electrocatalysts to improve the total electrolysis efficiency, especially in ampere-level current density. − However, the currently dominant commercialized hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) catalysts are noble metals Pt and RuO 2 /IrO 2 , respectively, which hinder their industrial adoptions . It is imperative to develop inexpensive, readily available, and highly active non-precious metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

Self-Supporting Co/CeO₂ Heterostructures for Ampere-Level Current Density Alkaline Water Electrolysis

Chen

Huang

et al. 2023

Inorg. Chem.

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Remodeling the active surface through fabricating heterostructures can substantially enhance alkaline water electrolysis driven by renewable electrical energy. However, there are still great challenges in the synthesis of highly reactive and robust heterostructures to achieve both ampere-level current density hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, we report a new Co/CeO2 heterojunction self-supported electrode for sustainable overall water splitting. The self-supporting Co/CeO2 heterostructures required only low overpotentials of 31.9 ± 2.2, 253.3 ± 2.7, and 316.7 ± 3 mV for HER and 214.1 ± 1.4, 362.3 ± 1.9, and 400.3 ± 3.7 mV for OER at 0.01, 0.5, and 1.0 A·cm–2, respectively, being one of the best Co-based bifunctional electrodes. Electrolyzer constructed from this electrode acting as an anode and cathode merely required cell voltages of 1.92 ± 0.02 V at 1.0 A·cm–2 for overall water splitting. Multiple characterization techniques combined with density functional theory calculations disclosed the different active sites on the anode and cathode, and the charge redistributions on the heterointerfaces that can optimize the adsorption of H and oxygen-containing intermediates, respectively. This study presents the tremendous prospective of self-supporting heterostructures for effective and economical overall water splitting.

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Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Cited by 70 publications

References 215 publications

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Design of earth‐abundant amorphous transition metal‐based catalysts for electrooxidation of small molecules: Advances and perspectives

Self-Supporting Co/CeO₂ Heterostructures for Ampere-Level Current Density Alkaline Water Electrolysis

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Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Cited by 70 publications

References 215 publications

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Design of earth‐abundant amorphous transition metal‐based catalysts for electrooxidation of small molecules: Advances and perspectives

Self-Supporting Co/CeO2 Heterostructures for Ampere-Level Current Density Alkaline Water Electrolysis

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Self-Supporting Co/CeO₂ Heterostructures for Ampere-Level Current Density Alkaline Water Electrolysis