ACS Applied Nano Materials
·
2025
·
IF 5.5
Hao Ren,Yi Cao,Tianjiao Ling,Junli Zhu,Jifang Xu,Minqi Sheng
Even though cobalt monophosphide (CoP) has been recognized as a prospective alternative to noble metal-based electrocatalysts in alkaline water splitting, further enhancement of the catalytic activity and durability of CoP in the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) requires precise manipulation of its nanoscale spatial architecture and surface electronic structure. Herein, tremella-like Pt, B-codoped CoP nanostructures were successfully anchored on carbon cloth (Pt–B–CoP/CC) through a successive process involving wet chemical deposition, surface Pt impregnation, and phosphorization. The resultant Pt–B–CoP/CC exhibits excellent catalytic activity for both HER and OER, primarily attributed to (i) high-density active sites, (ii) enhanced surface conductivity, and (iii) appropriately modulated electronic structure via Pt, B codoping. In addition, Pt–B–CoP/CC exhibits superaerophobicity, enabling the maintenance of efficient exposure of active sites during electrolysis. In an alkaline medium (1.0 M KOH), the required overpotentials are 52.53 (at −10 mA cm–2) for HER and 224.37 mV (at 10 mA cm–2) for OER, which outperform most of the reported transition metal-based bifunctional catalytic electrode materials. The constructed Pt–B–CoP/CC||Pt–B–CoP/CC cell requires an ultralow cell voltage of 1.51 V (1.74 V) to drive a current density of 10 mA cm–2 (100 mA cm–2). After 100 h of continuous electrolysis, the cell voltage increment is almost negligible at 10 mA cm–2, while at 100 mA cm–2 it increases by only 1.97%, demonstrating the tremendous durability of Pt–B–CoP/CC and its potential applicability in industrial-grade electrolyzers. This study provides inspiration for designing and synthesizing advanced multifunctional catalytic electrodes with high efficiency and long-term stability.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Yuchun Ren,Xixi Zhang,Chaoxin Yang,Zixiao Li,Yanghua Luo,Shengjun Sun,Fatma A. Ibrahim,Mohamed S. Hamdy,Imran Shakir,Guanwei Cui,Xuefei Liu,Xuping Sun,Bo Tang
Direct seawater electrolysis is promising for green hydrogen production from earth’s most abundant water resource, but its anode suffers from chloride-induced corrosion. Herein, Ba-doped NiFe layered double hydroxide supported on Ni foam (Ba-NiFe LDH/NF) is demonstrated as a high-performance anode for durable alkaline seawater oxidation. Such Ba-NiFe LDH/NF needs only an overpotential of 342 mV to achieve 1000 mA cm–2 and operates stably for 1500 h with negligible degradation and minimal active chlorine generation. Ba doping not only accelerates catalyst surface reconstruction but also favors the selective adsorption of OH– vs Cl– over the anode. The membrane electrode assembly electrolyzer composed of Ba-NiFe LDH/NF and Pt/C/NF demonstrates stable operation at 1000 mA cm–2 for 500 h.
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高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Cheng Ye,Xinyu Zheng,Lingmiao Fang,Zhanpeng Fu,Di Li,Jianjun Zhu,Deli Jiang
Designing cost-effective and efficient bifunctional electrocatalysts for overall water splitting is crucial for the production of renewable energy, yet still remains challenging. Herein, we report a bifunctional electrocatalyst assembled from CoMoP nanosheets and Cr(OH)3 nanoblocks via hydrothermal and electrodeposition methods. The strong coupling interface formed between CoMoP and Cr(OH)3 not only induces the formation of d–d orbital hybridization, exposing abundant active sites and improving charge transfer efficiency, but also accelerates the reaction kinetics, forming a stable heterostructure, thereby improving the catalytic activity and stability. Meanwhile, the prepared CoMoP/Cr(OH)3/NF electrode demonstrates overpotentials of 88 mV for the hydrogen evolution reaction (HER) and 207 mV for the oxygen evolution reaction (OER) at 10 mA cm–2. Remarkably, assembled CoMoP/Cr(OH)3||CoMoP/Cr(OH)3 requires only 1.52 V at 10 mA cm–2, outperforming most reported advanced bifunctional catalysts. This study proposes a rapid and rational strategy for constructing novel bimetallic phosphide/hydroxide heterostructured electrocatalysts.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Longyu Wang,Yiming Zhang,Chengyu Zhang,Fabrice Ndayisenga,Xiangyang Wang,Renyuan Zhao,Zhisheng Yu
The alkaline hydrogen evolution reaction (HER) plays a crucial role in advancing sustainable hydrogen production technologies. However, the limited abundance and reactivity of interfacial water molecules significantly hinder the reaction kinetics. This research develops a WC x -supported PtNi alloy (PtNi/WC x ) catalyst to reorganize the hydrogen-bond arrangement of interfacial water by adjusting electron density at metal sites. In situ Raman coupled with ab initio molecular dynamics (AIMD) is employed to investigate how the interfacial hydrogen-bond network influences catalytic activity. These results demonstrate that the electron-rich Pt sites in PtNi/WC x disrupt the hydrogen-bond network by altering the alignment of water molecules. This disruption enhances the mobility and reactivity of H 2 O* and OH* intermediates at the solid-liquid interface. The optimized PtNi/WC x catalyst achieves exceptional HER activity, requiring only 16 mV at 10 mA cm −2 and 78 mV at 100 mA cm −2 . These findings offer a microscopic perspective and theoretical guidelines for optimizing HER catalysts via interfacial water structure manipulation.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Tie Ye,Zhenyu Gao,Yong Qin,Zheng Ren,Yi Wang
The development of efficient bifunctional electrocatalysts capable of driving both hydrogen and oxygen evolution reactions (HER/OER) remains a critical task for renewable as well as sustainable water decomposition systems. Herein, we presented an electrocatalyst comprising cobalt sulfide (Co₃S₄) circular nanosheets decorated with trace platinum (Pt) nanoparticles, directly grown on nickel foam (Co-S-Pt@NF). Through synergistic integration of uniformly dispersed Pt and sulfur-rich coordination environments, the catalyst achieved exceptional dual-functional activity in alkaline medium (1 M KOH). The overpotentials of Co-S-Pt@NF at 100 mA cm - ² current density were 68 mV (HER) as well as 353 mV (OER), respectively, exceeding those of Pt-C@NF as well as Ru-O@NF. The density functional theory (DFT) calculations were conducted to investigate mechanism. When Co-S-Pt@NF was adopted as two electrodes in an electrolyze for overall water decomposition, the system could provide 100 mA cm - ² at a low cell voltage of 1.59 V and maintained stable efficiency operation in the 1 M KOH solution for 100 h. This work provided a potential example for the design of cost-effective and high activity “trace precious metal + transition metal supports” bifunctional catalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Haonan Wu,Shengyao Su,Ningning Zhan,Jidong Cong,Yangshang Zhu,Pengfei Tian,Shiwei Song,Jingquan Liu
It remains challenging for constructing the electrocatalysts that can prevent agglomeration, clogging and resist corrosion to improve the hydrogen evolution reaction (HER) performance of alkaline seawater. This study proposes a defect-assisted impregnation strategy to developed the Pt-NiMoOH/NMF with Pt sub-nanocluster distribution induced by a NiMoOH nanoarray on NiMo foam, resulting in an admired HER catalytic activity in alkaline seawater. The rich-defect NiMoOH nanosheet array strengthen the interaction with the Pt nanoclusters, not only effectively inhibiting the agglomeration of Pt, but also inducing the electron enrichment on the Pt surface by regulating electron local electronic environment. It is conducive to accelerating the water dissociation efficiency, enhancing the adsorption of protons and preventing the Ca/Mg clogging for active sites, and lead to remarkable improvements for HER performance. As a result, the Pt-NiMoOH/NMF electrocatalyst possessed a superior acid-like kinetics in 1 M KOH with a low Tafel slopes (38.6 mV dec −1 ) and overpotentials (66 mV at 500 mA cm −2 ). Significantly, it required an overpotential of 74 mV at 500 mA cm −2 and operated for 300 h continuously and stably in alkaline seawater condition. This work presents a novel strategy for enhancing catalytic performance in seawater by adjusting the interfacial interaction between metals and support.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Doan Thi Luu Luyen,Dinh Chuong Nguyen,Dat Ngoc Trinh,Son Vu Truong Le,Soon-Gil Yoon,Nguyen V. Hieu
Rationally designed electrocatalysts with excellent catalytic activity and robust stability are essential for enhancing the performance of water splitting toward a near-future hydrogen economy. In this work, we report a highly efficient triphase hetero-interface heterostructured electrocatalyst consisting of ultrafine Rh nanoparticles anchored on Cu3P/MnP nanosheets supported on Ni foam (labelled Rh/Cu3P/MnP) to boost the performance of overall water splitting. Experiments clarify the impressive role of the triphase hetero-interface of Rh, Cu3P, and MnP in interfacial electronic redistribution, which is significant for optimizing the catalyst's ability to adsorb and desorb reaction intermediates, thereby accelerating electrochemical reaction kinetics. Additionally, the rationally controlled multi-dimensional structure-comprising 0D Rh nanoparticles, 2D Cu3P/MnP nanosheets, and a 3D Ni substrate-endows the catalyst with a large electrochemically active surface area, excellent charge transfer ability, and abundant accessible active species. Therefore, the Rh/Cu3P/MnP catalyst demonstrates promising catalytic performance for the two key reactions in water splitting: the hydrogen evolution reaction and the oxygen evolution reaction. Moreover, a water electrolyzer utilizing Rh/Cu3P/MnP catalytic electrodes exhibits remarkable efficiency and remains stable over 50 h of continuous operation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yunpeng Wang,Liancen Li,Hui Yu,Zehan Xie,Rongcheng Mo,Minsheng Lu,Changzhou Chen,Douyong Min,Jinli Chen,Guangfu Qian
Developing highly active lignin carbon-based electrocatalysts for urea electrolysis is critical but remains a considerable challenge. Herein, a self-supported lignin-derived carbon coupling with Mo-doped NiO and NiCo alloy heterojunction (Mo-NiO@NiCo/C) has suitable lattice tensile strain and rapid electron transfer , thereby achieving high catalytic performance for urea electrolysis under large current density . The operando electrochemical impedance results demonstrate that Mo-NiO@NiCo/C undergoes an indirect oxidation step during the urea oxidation reaction (UOR) and follows the Volmer-Heyrovsky mechanism during the hydrogen evolution reaction (HER). Consequently, among all prepared catalysts, Mo-NiO@NiCo/C exhibits the best UOR ( E 10/500/1000 = 1.278/1.381/1.430 V) and HER ( E −10/−500/−1000 = −38/−262/−353 mV) activity in 1.0 M KOH with 0.5 M urea solution. In a UOR//HER electrolysis cell, Mo-NiO@NiCo/C can obtain the potential of 1.313 and 1.607 V at 10 and 1000 mA cm −2 . Meanwhile, benefiting from the self-supported lignin-derived mesoporous carbon structure , it can operate stably for 100 h at 1000 mA cm −2 . This work presents an efficient lignin-derived carbon-based catalyst for urea electrolysis under ampere-level current density and details a practicable method for improving the utilization rate of lignin-derived carbon.
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高影响因子
ELECTROANALYSIS
·
2026
·Vol. 38
·期 2
·e70115
·
IF 2.6
Haixu Wang,Tingwei Zhang,Zhen Sun,Xiaonan Qi,Rongsong cao,Chuanlai Jiao
Efficient bifunctional electrocatalysts are crucial for the advancement of rechargeable zinc-air batteries (ZABs). In this article, we successfully synthesized a high-performance catalyst R-CoOOH@FeOOH through the oxygen evolution reaction (OER). Additionally, in situ Raman characterization results indicate that CoFe@NC-w undergo electrochemical reconstruction during the OER, leading to the formation of CoOOH and FeOOH species. This dynamic structural evolution is responsible for the enhanced OER activity of the catalyst. This transformation endowed the catalyst with exceptional OER activity. In addition, the catalyst exhibited exceptional performance in the oxygen reduction reaction, which shows a half-wave potential of 0.86 V vs. (RHE) reversible hydrogen electrode. When integrated into a ZAB, the catalyst delivers a low charging potential of 2.3 V at a high current density of 50 mA cm −2 , accompanied by an excellent long-term durability of 600 h. These findings offer viable strategies for the development of high-performance catalysts for ZAB.
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ADVANCED MATERIALS
·
2026
·
IF 26.8
Kangwang Wang,Jie Zhan,Jun Liu,Zaichen Xiang,Wanyi Zhang,Lingyong Zeng,Kai Yan,Yan Sun,Huixia Luo
The photochemical CO 2 reduction reaction (CRR) represents a zero-carbon pathway for converting CO 2 into value-added chemicals, yet its industrial implementation has been constrained by low selectivity and product diversity. Dirac nodal arc semimetals characterized by ultrahigh carrier mobility (>25 000 cm 2 ·V −1 ·s −1 ) offer a promising platform to search for efficient catalysts for CO 2 conversion. Herein, we demonstrate that strategic Pt incorporation into PdSn 4 optimizes the electronic structure and carrier dynamics of this Dirac semimetal. Experimental and theoretical analyses reveal that the resulting Pd─Sn─Pt local electronic structure redistributes charge density around Pd and Pt atoms, which facilitates C─C coupling via *OC─COH and *OC─CHOH intermediates and enhances carrier mobility by 40% versus the pristine PdSn 4 single crystal. The optimized Pd 0.4 Pt 0.6 Sn 4 single crystal achieves C 2 H 4 i) formation rate of 328 µmol∙g −1 ∙h −1 ; ii) product selectivity of 73.1%; iii) electron-based selectivity of 89%. This work establishes electronic-structure-tunable Dirac semimetals as a new paradigm for multi-carbon photochemical CO 2 reduction, providing a design strategy for next-generation photocatalysts.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Namuersaihan Namuersaihan,Zhiqiang Zhao,Oliver J. Conquest,Ying Shu,Haoyue Sun,Chunjing Su,Qi Cheng,Aloysius Soon,Catherine Stampfl,Jun Huang
The hydrogen evolution reaction (HER) in alkaline media is a promising strategy for sustainable hydrogen production, but the exploration of efficient and durable HER electrocatalysts is often hindered by the empirical and time-consuming nature of traditional synthesis. Herein, a machine learning (ML)–driven strategy combining Bayesian optimization is introduced to achieve the rational design of Ni 3 S 4 /Ni 3 Mo heterostructures for alkaline HER. By coupling predictive modeling with experimental feedback, this approach efficiently navigated a complex synthesis space and identified conditions yielding a structurally and electronically optimized catalyst. The optimized Ni 3 S 4 /Ni 3 Mo exhibits a vibrant morphological evolution—from compact buds to blooming petal-like structures—enabling enriched active sites and accelerated mass transport. Guided by Bayesian optimization, the optimized Ni 3 S 4 /Ni 3 Mo achieves a 10.5-fold enhancement in C dl and delivers an exceptionally low overpotential of 18.2 mV at 100 mA cm −2 , outperforming most reported transition-metal catalysts and even surpassing commercial Pt/C. Mechanistic insights from in situ Raman and DFT reveal that interfacial charge redistribution between Ni 3 S 4 and Ni 3 Mo optimizes H* adsorption (Δ G H* ≈ 0.04 eV) and significantly reduces the water-dissociation barrier (0.08 eV), thereby accelerating reaction kinetics. This work demonstrates how the ML-guided optimization can synergistically couple morphology control, interfacial engineering with electronic tuning, offering a generalizable framework for intelligent catalyst discovery and mechanistic understanding in electrochemical energy conversion.
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ACS Nano
·
2026
·
IF 16
Peifang Guo,Da Liu,Haiwei Yang,Peng Chen,Mingchang Zhang,Xingyu Ding,Chao Zheng,Hongge Pan,Renbing Wu
Oxygen electrocatalysis, mainly including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), is a cornerstone in rechargeable metal–air batteries. However, these reactions are sluggish due to the four-electron transfer process and the linear scaling relationship of the intermediate binding strength. Herein, we have rationally developed a hybrid composite consisting of high-entropy alloy nanoparticles (NPs) encapsulated in carbon nanotubes (CNTs) to significantly improve the electrocatalytic performance. In situ spectroscopy investigations and theoretical calculations disclose that high-entropy alloys undergo dynamic reconstruction to form MOOH and M–OH (M represents metallic elements) as the authentic active species in the ORR and OER processes, respectively. Specifically, Fe, Co, Mn, and Cu regulate the charge transfer between the Ni–O bonds in MOOH for the OER, while the high-entropy effect and surface-absorbed OH groups coregulate the d-band center of surface Co for the efficient ORR. Accordingly, the as-developed FeCoNiMnCu@CNTs exhibits activity for both ORR and OER, with an ultralow voltage gap of 0.626 V between the half-wave potential of ORR and the OER potential at 10 mA cm–2. Moreover, Zn–air batteries with FeCoNiMnCu@CNTs exhibit a power density of 131.3 mW cm–2 and robust stability.
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