Electrodeposition of Metal‐Free Polyaniline Electrocatalyst for Efficient Oxygen Evolution in Acid

Meng, Xu; Gao, Wenluan; Zhao, Ruiqing; Sun, Jiuyi; Han, Yunxi; Niu, Xiaopo; Xu, Zhi-Hui; Qin, Yuwen; Wang, QingFa

doi:10.1002/celc.202200901

Cited by 5 publications

(2 citation statements)

References 58 publications

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“…Non-metallic based catalysts own a large specific surface area and good electronic conductivity, showing a huge application prospect in electrochemistry. [11,56] Currently reported non-metallic based catalysts are mainly divided into carbon nanotubes, graphene, g-C 3 N 4 , and their analogues. Generally, to realize their good electrocatalytic activity, heteroatom doping, and the introduction of defects are two main strategies to regulate the electronic structure of carbon-based materials; [23a] thus increasing the intrinsic catalytic activity.…”

Section: Designing Cathode Catalyst With Dual Functionsmentioning

confidence: 99%

Post Nitrogen Electrocatalysis Era From Li–N₂Batteries to Zn–N₂Batteries

Meng

Xiong

et al. 2023

Advanced Energy Materials

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ability to deliver high energy density with good environmental friendliness, which are considered as the promising devices for energy storage and conversion in the sustainable human society. [1] Considering the abundance of nitrogen resource in the air, scientists began to shift their research perspective from O 2 or CO 2 to N 2 . With the first presentation of the concept for the Li-N 2 battery in 2017, [2] a new device combining energy conversion and N 2 fixation starts to come into sight. Inspired by this new model, from organic Na/Al-N 2 batteries [3] to aqueous Al/Zn-N 2 batteries, [4] other types of metal-N 2 batteries began to be reported as illustrated in Figure 1. For realizing electrochemical NH 3 production, the reaction path is nitrogen reduction reaction (NRR) during the discharge process for both organic and aqueous metal-N 2 batteries. Based on diverse reaction mechanism under aqueous and organic solution, the subsequent reaction in the charge process for two types of metal-N 2 batteries is different, that is, the nitrogen extraction reaction (NER) for the organic ones and oxygen evolution reaction (OER) for the aqueous ones. Overall, the developments of aqueous metal-N 2 batteries are mainly inspired by the organic metal-N 2 batteries and lag behind their development. Up to now, only part of the reported metal-N 2 batteries shows good electrochemical reversibility, [5] while some are electrochemical irreversible primary batteries that can only be discharged. [6] Unlike organic metal-N 2 batteries, for all the reversible/irreversible aqueous metal-N 2 batteries, NH 3 would be generated during the discharging process. In the meantime, these reversible aqueous metal-N 2 batteries can still be recharged even after the NH 3 releasing. [7] NH 3 plays an important role in maintaining the survival of human beings and the sustainable development for the social economy. First, NH 3 is an important chemical raw material for the production of agricultural nitrogen fertilizer, as well as a key energy storage intermediate and carbon-free energy carrier for the production of fuels, dyes, and other industries articles. [8] Moreover, NH 3 is considered as an excellent hydrogen energy carrier because of its high hydrogen content without carbon element and easy liquefaction for storing and transporting. [9] However, the industrial NH 3 synthesis is still carried out via the Haber-Bosch process developed 100 years ago based on the reaction of N 2 +3H 2 →NH 3 , which proceeds under high working pressure of 20 MPa and heat temperature of 673 K, resulting in Metal-N 2 batteries attract considerable research attention due to the dualfunctional characteristics applied in energy storage and conversion, as well as electrochemical artificial NH 3 yield. Nonetheless, it has been found that not all kinds of metal-N 2 batteries are suitable for combining the above two applications. Herein, recent advances in metal-N 2 batteries are summarized. First, the electrochemical reaction mechanisms for all types of metal-N 2 batteries,...

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Section: Designing Cathode Catalyst With Dual Functionsmentioning

confidence: 99%

Post Nitrogen Electrocatalysis Era From Li–N₂Batteries to Zn–N₂Batteries

Meng

Xiong

et al. 2023

Advanced Energy Materials

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“…Kang et al prepared a polyaniline (PANI)/carbon dot (CDs) composite as a metal-free bifunctional photogenerated carrier-assisted electrocatalyst [102]. PANI is a low cost, conductive polymer with a visible light response, a large π-conjugated electronic structure, fast redox characteristics, and excellent carrier mobility [103][104][105]. CDs, as a kind of carbon nanomaterial, due to its environmental friendliness and excellent optical and physicochemical properties, exhibits obvious advantages in the field of catalysis [106,107].…”

Section: Photogenerated Carrier-assisted Electrocatalysts For Overall...mentioning

confidence: 99%

Photogenerated Carrier-Assisted Electrocatalysts for Efficient Water Splitting

Zheng

Zhen

et al. 2023

Catalysts

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Electrocatalysts are the core component of electrocatalytic water splitting for improving its overall energy conversion efficiency and reducing the energy input. At present, the design of efficient electrocatalysts mainly focuses on optimizing their electronic structure and local reaction microenvironment to improve the adsorption of reaction intermediates. Although many effective strategies (such as heteroatom doping, vacancy, heterojunction construction, strain engineering, and phase transformation) have been developed, the improvement in catalytic activity has been very limited. Hence, the development of innovative strategies to enhance the optimization of photoelectroactivity is desirable. Inspired by the strategy of applying a potential field to reduce carrier radiation recombination in traditional photoelectrocatalysis, photogenerated carrier-assisted electrocatalysis, based on the synergy effect of light and electric energy, provides a new strategy to enhance the intrinsic activity of water splitting. The essence of the photo-assisted strategy can be attributed to the injection of hot carriers and photogenerated electron–hole pairs or the accelerated reaction kinetics caused by local temperature rises. The photogenerated carrier-assisted strategy has received wide attention due to its simplicity and efficiency. In this review, we focus on the recent advances in photogenerated carrier-assisted strategies (PCAS) for enhancing the performance of HER, OER, and overall water splitting. The possible mechanisms are addressed and the basic composition and latest progress in photo-assisted electrocatalysts using PCAS are summarized. Finally, the challenges and development prospects of PCAS will be detailed.

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Recent development of non‐iridium‐based electrocatalysts for acidic oxygen evolution reaction

Shi,

Zhang,

et al. 2024

Carbon Neutralization

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Proton exchange membrane water electrolyser (PEMWE) possesses great significance for the production of high purity of hydrogen. To expedite the anodic oxygen evolution reaction (OER) that involved multiple electron–proton‐coupled process, efficient and stable electrocatalysts are highly desired. Currently, noble‐metal Ir‐based materials are the benchmark anode due to its corrosion‐resistant property and favourable combination of activity/stability. However, the large‐scale deployment of PEMWE is usually constrained due to the use of the scarcest element iridium. In this review, we disclose the current research progress towards the non‐iridium‐based electrocatalysts for OER in acidic media, and then summarize some typical oxides that possesses good catalytic performance. Besides, we also present the unresolved problems and challenges in an attempt to enhance the activity/stability of these catalysts.

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Electrodeposition of Metal‐Free Polyaniline Electrocatalyst for Efficient Oxygen Evolution in Acid

Cited by 5 publications

References 58 publications

Post Nitrogen Electrocatalysis Era From Li–N₂Batteries to Zn–N₂Batteries

Post Nitrogen Electrocatalysis Era From Li–N₂Batteries to Zn–N₂Batteries

Photogenerated Carrier-Assisted Electrocatalysts for Efficient Water Splitting

Recent development of non‐iridium‐based electrocatalysts for acidic oxygen evolution reaction

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Electrodeposition of Metal‐Free Polyaniline Electrocatalyst for Efficient Oxygen Evolution in Acid

Cited by 5 publications

References 58 publications

Post Nitrogen Electrocatalysis Era From Li–N2Batteries to Zn–N2Batteries

Post Nitrogen Electrocatalysis Era From Li–N2Batteries to Zn–N2Batteries

Photogenerated Carrier-Assisted Electrocatalysts for Efficient Water Splitting

Recent development of non‐iridium‐based electrocatalysts for acidic oxygen evolution reaction

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Product

Resources

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Post Nitrogen Electrocatalysis Era From Li–N₂Batteries to Zn–N₂Batteries

Post Nitrogen Electrocatalysis Era From Li–N₂Batteries to Zn–N₂Batteries