Bottom-up evolution of perovskite clusters into high-activity rhodium nanoparticles toward alkaline hydrogen evolution DOI Creative Commons
Gaoxin Lin, Zhuang Zhang,

Qiangjian Ju

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Jan. 17, 2023

Self-reconstruction has been considered an efficient means to prepare electrocatalysts in various energy transformation process for bond activation and breaking. However, developing nano-sized through complete in-situ reconstruction with improved activity remains challenging. Herein, we report a bottom-up evolution route of electrochemically reducing Cs3Rh2I9 halide-perovskite clusters on N-doped carbon ultrafine Rh nanoparticles (~2.2 nm) large lattice spacings grain boundaries. Various ex-situ characterizations including electrochemical quartz crystal microbalance experiments elucidate the Cs I extraction reduction during reduction. These from show significantly enhanced mass area toward hydrogen reaction both alkaline chlor-alkali electrolyte, superior liquid-reduced as well bulk Cs3Rh2I9-derived via top-down electro-reduction transformation. Theoretical calculations demonstrate water could be boosted clusters-derived enriched multiply sites, thus smoothing evolution.

Language: Английский

Advanced electrocatalysts with unusual active sites for electrochemical water splitting DOI Creative Commons
Hainan Sun, Xiaomin Xu, Hyunseung Kim

et al.

InfoMat, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 27, 2023

Abstract Electrochemical water splitting represents a promising technology for green hydrogen production. To design advanced electrocatalysts, it is crucial to identify their active sites and interpret the relationship between structures performance. Materials extensively studied as electrocatalysts include noble‐metal‐based (e.g., Ru, Ir, Pt) non‐noble‐metal‐based 3d transition metals) compounds. Recently, advancements in characterization techniques theoretical calculations have revealed novel unusual sites. The present review highlights latest achievements discovery identification of various unconventional electrochemical splitting, with focus on state‐of‐the‐art strategies determining true establishing structure–activity relationships. Furthermore, we discuss remaining challenges future perspectives development next‐generation By presenting fresh perspective reaction involved this aims provide valuable guidance study industrial applications. image

Language: Английский

Citations

98
Emerging carbon-supported single-atom catalysts for biomedical applications DOI Creative Commons
Guangfu Liao, Li Zhang, Chunxue Li

et al.

Matter, Journal Year: 2022, Volume and Issue: 5(10), P. 3341 - 3374

Published: Oct. 1, 2022

Language: Английский

Citations

83
Identifying the role of oxygen vacancy on cobalt-based perovskites towards peroxymonosulfate activation for efficient iohexol degradation DOI
Zhe Xu, Yijie Wu, Xin Wang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 319, P. 121901 - 121901

Published: Aug. 27, 2022

Language: Английский

Citations

80
Nontrivial Topological Surface States in Ru3Sn7 toward Wide pH‐Range Hydrogen Evolution Reaction DOI
Zongpeng Wang, Zhiping Lin, Yinglan Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(25)

Published: March 30, 2023

Nontrivial topological surface states (TSSs), which possess extraordinary carrier mobility and are protected by the bulk symmetry, have emerged as an innovative platform to search for efficient electrocatalysts toward hydrogen evolution reaction (HER). Here, a Sn-based nontrivial metal Ru3 Sn7 is prepared using electrical arc melting method. The results indicate that (001) crystal family of possesses TSSs with linear dispersion relation large energy window. Experimental theoretical demonstrate can significantly boost charge transfer kinetics optimize adsorption intermediates due symmetry-protected band structures. As expected, exhibits superior HER activity Ru, Pt/C, trivial counterparts (e.g., Ru2 Sn3 , IrSn2 Rh3 Sn2 ) higher ratios noble metals. Furthermore, wide pH-range topologically implies robustness its against pH variation during HER. These findings provide promising approach rational design metals highly electrocatalysts.

Language: Английский

Citations

79
Interfacial Engineering of Cobalt Thiophosphate with Strain Effect and Modulated Electron Structure for Boosting Electrocatalytic Hydrogen Evolution Reaction DOI Open Access
Kai Song, Huanhuan Zhang,

Zhiping Lin

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(12)

Published: Dec. 6, 2023

Abstract The fabrication of heterojunctions is an intriguing approach to boost the reactivity catalysts. However, facile preparation desirable heterojunction materials remains a challenge. Here, novel CoPS 3 /CoS 2 are created by intuitive phosphatization process on basis structurally flexible cobalt sulfide precursors. Significant stress effect exists at these heterogeneous interfaces, resulting in lattice distortions and exposure more active sites. interface interaction also modifies catalyst's electronic structure improve its electrical conductivity hydrogen adsorption capabilities. Notably, overpotential for electrocatalytic evolution reaction just 36.3 mV, which far superior those single‐component catalysts competitive with comparable reported. This work not only offers innovative electrocatalyst but strategy that can be used create based related transition metal thiophosphates.

Language: Английский

Citations

74
Multi‐d Electron Synergy in LaNi1‐xCoxRu Intermetallics Boosts Electrocatalytic Hydrogen Evolution DOI
Shijie Shen, Huanhuan Zhang, Kai Song

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 21, 2023

Despite the fact that d-band center theory links d electron structure of transition metals to their catalytic activity, it is yet unknown how synergistic effect multi-d electrons impacts performance. Herein, novel LaNi1-x Cox Ru intermetallics containing 5d, 4d, and 3d were prepared. In these compounds, 5d orbital La transfers 4d Ru, which provides adsorption sites for H*. The orbitals Ni Co interact with generate an anisotropic distribution, facilitates desorption OH*. ensures efficient activity. optimized LaNi0.5 Co0.5 has overpotential 43mV at 10 mA cm-2 alkaline electrocatalytic hydrogen evolution reaction. Beyond offering a variety new electrocatalysts, this work reveals synergy in promoting

Language: Английский

Citations

73
Design and Synthesis of Noble Metal‐Based Alloy Electrocatalysts and Their Application in Hydrogen Evolution Reaction DOI

Zhibo Cui,

Wensheng Jiao,

Zeyi Huang

et al.

Small, Journal Year: 2023, Volume and Issue: 19(35)

Published: April 26, 2023

Abstract Hydrogen energy is regarded as the ultimate source for future human society, and preparation of hydrogen from water electrolysis recognized most ideal way. One key factors to achieve large‐scale production by splitting availability highly active stable electrocatalysts. Although non‐precious metal electrocatalysts have made great strides in recent years, best evolution reaction (HER) are still based on noble metals. Therefore, it particularly important improve overall activity while reducing metals load. Alloying strategies can shoulder burden optimizing cost improving performance. With this mind, work application metal‐based alloy field summarized. In review, first, mechanism HER described; then, current development synthesis methods presented; finally, an example analysis practical studies presented. addition, at end prospects, opportunities, challenges facing tried discuss.

Language: Английский

Citations

72
Flowery ln2MnSe4 Novel Electrocatalyst Developed via Anion Exchange Strategy for Efficient Water Splitting DOI Creative Commons
Sumaira Manzoor, С. В. Труханов, Mohammad Numair Ansari

et al.

Nanomaterials, Journal Year: 2022, Volume and Issue: 12(13), P. 2209 - 2209

Published: June 28, 2022

Oxygen and hydrogen generated by water electrolysis may be utilized as a clean chemical fuel with high gravimetric energy density conversion efficiency. The will the alternative to traditional fossil fuels in future, which are near exhaustion cause pollution. In present study, flowery-shaped In2MnSe4 nanoelectrocatalyst is fabricated anion exchange reaction directly grown on nickel foam (NF) 1.0 M KOH medium for oxygen evolution (OER). physiochemical electrical characterization techniques used investigate structure, morphology, properties of material. electrochemical result indicates that synthesized material exhibits smaller value Tafel slope (86 mV/dec), lower overpotential (259 mV), stability 37 h small deterioration current long time. Hence, responds an extraordinary performance OER process many other applications future.

Language: Английский

Citations

71
Phosphorus-modified cobalt single-atom catalysts loaded on crosslinked carbon nanosheets for efficient alkaline hydrogen evolution reaction DOI
Yucong Huang, Zhiyun Hu,

Liangai Huang

et al.

Nanoscale, Journal Year: 2023, Volume and Issue: 15(7), P. 3550 - 3559

Published: Jan. 1, 2023

Efficient and low-cost transition metal single-atom catalysts (TMSACs) for hydrogen evolution reaction (HER) have been recognized as research hotspots recently with advances in delivering good catalytic activity without noble metals. However, the high-cost complex preparation of TMSACs insufficient stability limited their practical applications. Herein, a simple top-down pyrolysis approach to obtain P-modified Co SACs loaded on crosslinked defect-rich carbon nanosheets was introduced alkaline evolution, where atoms are locally confined before prevent aggregation. Thereby, abundant defects unsaturated coordination formed during significantly improved monatomic structure reduced barrier. Furthermore, synergy between cobalt phosphorus established optimize decomposition process water molecules, which delivers key promoting slow kinetics HER. As result, SAC exhibited excellent HER, overpotentials 70 mV 192 at current densities -10 mA cm-2 -100 cm-2, respectively.

Language: Английский

Citations

68
Atomic‐Scale Configuration Enables Fast Hydrogen Migration for Electrocatalysis of Acidic Hydrogen Evolution DOI
Yaobin Wang, Qian Lü, Feng Li

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: June 27, 2023

Abstract The efficiency of hydrogen evolution reaction (HER) electrocatalysts under acidic conditions is largely determined by the equilibrium adsorption/desorption on catalyst surface. A promising strategy for enhancing performance multimetal‐supported HER utilization spillover. However, current heterostructured catalysts often present challenges such as high interfacial transport barriers, extended paths, and intricate synthesis processes. Addressing these limitations, a novel orthorhombic SrHf 1− x Ru O 3− δ perovskite oxide proposed an exemplary model atomic‐level configuration design strategy. This material exhibits unique synergistic effect multiple catalytic sites between Hf/Ru pairs, overcoming aforementioned challenges. study presents new cooperative mechanism HER, consisting three steps: proton adsorption Hf site, migration via strong O‐bridge H 2 detachment from active site. conductivity unusual charge redistribution within Hf‐O‐Ru structure further enhance specific activity . research paves way designing high‐performance media, leveraging spillover atomic‐scale configurations. findings have significant implications development efficient, cost‐effective, environmentally friendly production technologies.

Language: Английский

Citations

63