Support induced phase engineering toward superior electrocatalyst

Sheng, Beibei; Cao, Dengfeng; Shou, Hongwei; Moses, Oyawale Adetunji; Xu, Wenjie; Xia, Yujian; Zhou, Yuzhu; Wang, Huijuan; Wan, Pingyu; Zhu, Shuang; Chu, Wangsheng; Wu, Xiaojun; Li, Song

doi:10.1007/s12274-021-3761-9

Cited by 16 publications

(13 citation statements)

References 50 publications

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“…As shown in Figure 6g, the CoSe 2 powder underwent a phase transformation to CoOOH through a key intermediate of Co 3 O 4 . Nonetheless, CoSe 2 −SWCNT with support could control the evolution processes and obtain the Co 3 O 4 −SWCNT intermediates, which further proved that the support could induce phase engineering 25 (Figure 4d−f). Unfortunately, the in situ s-XAS experiment was not carried out because of the limit of external conditions, but it will become a research direction in the future.…”

mentioning

confidence: 74%

“…These works supplied insights for boosting reaction rate by studying the activity origin of real active species formation induced by the support. Recently, we also reported a phase-engineering support effect which can lead to synthesizing the intermediate phase during the course of electrocatalysis . Theoretical calculation and several characterizations, especially synchrotron radiation technologies, witnessed different evolved active phases: CoSe 2 –SWCNT transformed into Co 3 O 4 –SWCNT and CoSe 2 powder reconstructed into CoOOH (Figure d–f).…”

Section: Support Effects In Electrocatalysismentioning

confidence: 96%

“…(e) Co 2p XPS spectra and (f) normalized Co L-edge s-XAS of the true active phase for CoSe 2 –SWCNT and CoSe 2 powder under 1 M KOH. Reproduced with permission from ref . Copyright 2021, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.…”

Section: Support Effects In Electrocatalysismentioning

confidence: 99%

“…(g) Quasi- in situ Co L-edge s-XAS of as prepared catalysts in 1 M KOH for CoSe 2 powder. Reproduced with permission from ref . Copyright 2021, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.…”

Section: Support Effects In Electrocatalysismentioning

confidence: 99%

“…Recently, we also reported a phase-engineering support effect which can lead to synthesizing the intermediate phase during the course of electrocatalysis. 25 Theoretical calculation and several characterizations, especially synchrotron radiation technologies, witnessed different evolved active phases: CoSe 2 −SWCNT transformed into Co 3 O 4 −SWCNT and CoSe 2 powder reconstructed into CoOOH (Figure 4d−f). This intriguing phase engineering strategy by the support SWCNT may open a way to regulate the preferential active species in electrocatalysis reactions.…”

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confidence: 99%

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Support Effects in Electrocatalysis and Their Synchrotron Radiation-Based Characterizations

Sheng

Cao

Liu

et al. 2021

J. Phys. Chem. Lett.

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Electrocatalysis is recognized as a significant process for energy conversion. In fact, numerous factors, including the variable electronic structure of electrocatalysts, rich intermediates, and mutable active phases, have important but complex influences on the catalytic process. In addition, the support of electrocatalysts is considered as one of key factors that correlate to the final catalytic performance. In this Perspective, some recent advances regarding the support effects in electrocatalysis are briefly summarized. Synchrotron radiation-based characterizations are introduced to reveal the support-induced modulation in electrocatalysts. Recent in situ/operando studies are emphasized for better understanding of the real interaction between catalysts and support, together with visualizing the dynamic catalytic process. Some perspectives are proposed that may accelerate more attention being given to the support’s optimization for future practical applications.

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mentioning

confidence: 74%

Section: Support Effects In Electrocatalysismentioning

confidence: 96%

Section: Support Effects In Electrocatalysismentioning

confidence: 99%

Section: Support Effects In Electrocatalysismentioning

confidence: 99%

mentioning

confidence: 99%

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Support Effects in Electrocatalysis and Their Synchrotron Radiation-Based Characterizations

Sheng

Cao

Liu

et al. 2021

J. Phys. Chem. Lett.

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Visualizing Catalytic Dynamics Processes via Synchrotron Radiation Multitechniques

Cao

Liu

et al. 2023

Advanced Materials

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The importance of catalysts today as workhorses in most modern industrial fields cannot be downplayed. As a result, rational design and engineering of targeted catalysts have emerged as key objectives and are dependent on in‐depth understanding of complex catalytic dynamics. Synchrotron radiation (SR) light sources with rich advanced experimental methods are being recognized as a comprehensive characterization platform, which can draw a full picture on such multiparameter‐involved catalysis under actual working conditions. Herein, the recent progress of catalytic dynamics process studied by the means of various SR techniques is summarized. In particular, SR‐based spectroscopic, scattering, and imaging investigations on true catalysts are first introduced with the potential of in situ and operando characterizations. Apparently, the limitations from single SR technique naturally prompt a simple combination of SR techniques to better understand the whole catalysis process. Moreover, the discrepancies among various online testing facilities and batches of samples, along with random/systematic errors introduced by traditional intermittent/asynchronous measurement make it imperative to develop more prolific systems, complementary of multiple SR techniques for deep probing of dynamic catalytic processes. It is believed that the booming new light sources can further enrich the current multiple SR techniques, and thus may realize the true visualization on future catalytic dynamic processes.

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Crystal‐Phase‐Engineered High‐Entropy Alloy Aerogels for Enhanced Ethylamine Electrosynthesis from Acetonitrile

Huang,

Chen,

Chang

et al. 2024

Advanced Materials

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Crystal‐phase engineering that promoting the rearrangement of active atoms to form new structural frameworks has achieved excellent result in the field of electrocatalysis and optimized the performance of various electrochemical reactions. Herein, for the first time, we found that the different components in metallic aerogels will affect the crystal‐phase transformation, especially in high‐entropy alloy aerogels (HEAAs), whose crystal‐phase transformation during annealing is more difficult than medium‐entropy alloy aerogels (MEAAs), but they still show better electrochemical performance. Specifically, PdPtCuCoNi HEAAs with the parent phase of face‐centered cubic (FCC) PdCu possess excellent 89.24% of selectivity, 746.82 mmol h−1 g−1cat. of yield rate, and 90.75% of Faraday efficiency for ethylamine during acetonitrile reduction reaction (ARR), while maintaining stability under 50 h of long‐term testing and 10 consecutive electrolysis cycles. The structure‐activity relationship indicates that crystal‐phase regulation from amorphous state to FCC phase promotes the atomic rearrangement in HEAAs, thereby optimizing the electronic structure, and enhancing the adsorption strength of reaction intermediates, improving the catalytic performance. This study provides a new paradigm for developing novel ARR electrocatalysts, and also expands the potential of crystal‐phase engineering in other application areas.This article is protected by copyright. All rights reserved

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Support induced phase engineering toward superior electrocatalyst

Cited by 16 publications

References 50 publications

Support Effects in Electrocatalysis and Their Synchrotron Radiation-Based Characterizations

Support Effects in Electrocatalysis and Their Synchrotron Radiation-Based Characterizations

Visualizing Catalytic Dynamics Processes via Synchrotron Radiation Multitechniques

Crystal‐Phase‐Engineered High‐Entropy Alloy Aerogels for Enhanced Ethylamine Electrosynthesis from Acetonitrile

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