JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Lan Zhang,Wanran Huang,Xi Peng,Peixin Jiang,Jianshan Ye,Minglei Yan,Zhiwei Lu
The high efficiency, low cost, and rapid preparation of non-noble metal oxygen reduction reaction (ORR) electrocatalysts are of great significance for the large-scale application of energy conversion equipment. Herein, PdNi alloy nanoparticles dispersed within the multiwalled carbon nanotubes (MWCNTs) composite (PdNi-PVP/MWCNTs) were synthesized via an in situ self-assembly strategy, in which polyvinylpyrrolidone (PVP) serves as an N and C source, and MWCNTs act as conducting supports to enhance structural integrity and electron transport. Notably, the synthesis relies solely on low-temperature oil-bath stirring, enabling rapid batch production without the need for high-temperature calcination-a distinctly green and scalable approach. In this system, PVP acts as a capping agent that facilitates the uniform anchoring of PdNi alloy nanoparticles on MWCNTs, effectively suppressing particle aggregation, thereby increasing the surface roughness and specific surface area to expose more active sites. Impressively, benefiting from the unique structure, high crosslinking, and high conductivity that minimize catalyst separation and aggregation, this new type of electrocatalyst exhibited an impressive ORR onset potential of 0.97 V, half-wave potential of 0.83 V, larger current density of 4.3 mA∙cm −2 , and existing good corrosion resistance to drive a relatively stable performance, which are superior to commercial Pt/C in alkaline media. This study demonstrates the successful design of an environmentally benign and cost-effective ORR electrocatalyst, highlighting its promising potential for practical applications in energy conversion technologies.
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高影响因子
Journal of Energy Storage
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2026
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IF 10.7
Ning Gao,Ben Hu,Yuqi Chen,Junhao Zhang,Yuanjun Liu,Xiangjun Zheng,Qianqian Fan,Ying Zhang,Qinghong Kong,Xingmei Guo
Sluggish oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) reaction kinetics restrict the application of zinc-air batteries, making the exploration of high-performance bifunctional electrocatalysts imperative. Here, a multiple synergistic strategy is proposed to fabricate Co//NiFe@CNFs composite with spatially separated dual-active-sites, with NiFe nanoparticles encapsulated inside carbon fibers and Co nanoparticles anchored on their outer surfaces. The catalyst exhibits excellent bifunctional catalytic activity with a high ORR half-wave potential of 0.865 V (vs. RHE) and a low OER overpotential of 310 mV at 10 mA cm −2 . Meanwhile, the Co//NiFe@CNFs catalyst shows excellent durability with a current retention rate of 95.41% after 35,000 s and methanol tolerance. The assembled zinc-air battery achieves a peak power density of 145.6 mW cm −2 at 231.9 mA cm −2 and a specific capacity of 815 mAh g Zn −1 at 10 mA cm −2 , and excellent cycling stability. The excellent electrocatalytic performance originates from multifactor synergy that the porous fibrous structure accelerates mass transport, Co and NiFe nanoparticles provide abundant active sites, and their spatial separation improves structural stability while eliminating cross-interference between active centers for different catalytic pathways.
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ADVANCED MATERIALS
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2026
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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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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2026
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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 Omega
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2026
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IF 4.3
Hua Li,Fang Su,Shuiqiang Chen,Yong Gao,Ke-Wen Tang
Metal–organic frameworks (MOFs) have received widespread attention in various energy related applications due to their unique structural characteristics. Nevertheless, the inherent low electronic conductivity of MOFs is a major limitation for their competitive activity. Herein, we synthesized a self-standing NiFe MOF@Ni3S2 core–shell hierarchical heterostructure through using Ni3S2 grown on nickel foam (NF) as a semisacrificial template, in which the highly conductive Ni3S2 nanosheets core endows the hybrid with rapid charge transfer capability, and the bimetallic NiFe MOF nanosheets provide abundant exposed active sites. Benefiting from the structural and compositional advantages, the enhanced electrocatalytic activity of the as-obtained NiFe MOF@Ni3S2/NF has been achieved toward alkaline oxygen evolution reaction (OER). As a result, the NiFe MOF@Ni3S2/NF only requires overpotentials of 177 and 219 mV to yield OER current densities of 10 and 100 mA cm–2, respectively, and exhibits a very small Tafel slope of 24.1 mV dec–1 and high durability, making it among the most efficient earth-abundant OER catalysts. This study will inspire further construction of MOF-based nanocomposites for applications in electrochemical renewable energy systems.
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2026
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IF 7.3
Zhangyi Tao,Hao Yu,Shengming Li,Weijie Xia,Chao Wang,Xue Liu,Shiqi Zhang,Jun Ma,Xiaorong Zhu,Ming Ge,Sisi Liu,Xiaolei Yuan
Ammonia oxidation reaction (AOR) catalyzed by Pt faces sluggish kinetics due to poisoning by *NHx intermediates and Nad species. While the Oswin-Salomon (O–S) pathway is hindered by high Nad desorption barriers, the Gerischer-Maurer (G–M) mechanism circumvents Nad formation but is limited by high activation energies for *NHx dehydrogenation. In this study, PtZn alloys were synthesized by incorporating low-electronegativity Zn to precisely tune the electronic structure of Pt, resulting in significant enrichment of the d-electron density and a downshift of the d-band center. This electronic modulation weakens the Pt-*NHx bond strength, thereby optimizing the G–M pathway. As a result, the activation energy for the rate-limiting *NH2 dehydrogenation step is notably reduced, promoting faster intermediate turnover and enhancing overall catalytic kinetics. Additionally, operando Raman spectroscopy directly reveals the formation of *N2Hy species on Pt33Zn1, providing compelling evidence that the optimized catalyst follows the G–M mechanism. Impressively, the optimized Pt33Zn1 demonstrates exceptional AOR performance, achieving an onset potential of 0.49 V and a remarkable mass activity of 83.45 A g–1 (peak current density: 25.12 mA cm–2) at 5 mV s–1. These values surpass those of commercial PtIr/C (40%) by 4-fold and 10-fold, respectively. This kinetic enhancement underscores the potential of Pt33Zn1 as a high-performance AOR catalyst.
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高影响因子
ACS Applied Nano Materials
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2026
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IF 5.5
Xiaoyang Dong,Jinxing Wang,Jingdong Yang,Wen Zeng,Guangsheng Huang,Jingfeng Wang
Magnesium (Mg)–air batteries are regarded as promising large-scale energy-storage devices because of their high theoretical energy density, low material cost, intrinsic safety, and environmental benignity. Nevertheless, their practical deployment is severely hindered by sluggish oxygen reduction reaction (ORR) kinetics at the cathode. Herein, nanoscale transition-metal–nitrogen-doped carbon (M-N-C, M = Fe, Co, Ni) electrocatalysts─denoted FNC, CNC, and NNC─are prepared by argon-pyrolysis of Prussian blue analogues (PBAs). The cationic and anionic ligands are systematically varied to tailor the crystal phase, pore architecture, and nanoscale M-Nx coordination environment. Comprehensive characterization shows that CNC possesses the highest density of well-dispersed Co-Nx active nanosites embedded in a graphitic matrix. This ensures rapid electron transfer and abundant accessible active centers. Electrochemical tests in alkaline (0.1 M KOH) and neutral (3.5 wt % NaCl) electrolytes demonstrate that CNC delivers the most robust ORR activity and stability (CNC > FNC > NNC) via a near-ideal 4 e pathway. Meanwhile, CNC exhibits better stability than commercial Pt/C in both alkaline and neutral electrolytes. As the cathode nanocatalyst in Mg-air batteries, CNC is found to yield a peak power density of 19.14 mW/cm2─only 0.66 mW/cm2 below that of commercial Pt/C. The decisive role of nanoscale M-Nx coordination environments in boosting ORR kinetics is thus elucidated. This work provides a nanomaterials-driven strategy for developing high-performance, cost-effective electrocatalysts for Mg-air batteries.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Xiaoya Yuan,Yuan Yu,Dongfeng Sun,Jianlong Wen,Yanning Qu,Xiaodong Hao,Shukai Ding,Bingshe Xu
Transition metal phosphides, owing to their hydrogenase-like structure, are theoretically expected to exhibit excellent electrocatalytic performance. However, in practice, their performance often falls short due to the phosphorus loss and the insufficient active sites in the electrochemical processes. In this study, the NiCo-LDH nanosheet coating was applied to the NiCoP nanorod array, which not only prevented the loss of phosphorus during electrochemical processes but also provided abundant active sites, thereby significantly enhancing its electrocatalytic performance. Specially The phosphorus mass loss in NiCoP was 8.3% during the electrochemical processes, whereas in the NiCo-LDH@NiCoP composite, it dropped to 1.12%.The as-prepared NiCo-LDH@NiCoP/NF composite exhibited excellent catalytic activity for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). At 10 mA cm −2 in 1.0 M KOH, its HER overpotentials was only 59 mV, very close to that of Pt/C (58 mV). However, when the current density exceeded 192 mA cm −2 , the HER performance of the NiCo-LDH@NiCoP/NF surpassed that of Pt/C catalyst, with the HER overpotentials being to 233 mV at 200 mA cm −2 and 260 mV at 300 mA cm −2 , significantly lower than those of the Pt/C catalyst (236 mV@200 mA cm −2 and 295 mV @ 300 mA cm −2 ). It also demonstrated excellent OER capability 1.0 M KOH, with an OER overpotential of merely 190 mV at 10 mA cm −2 , much lower than that of RuO 2 catalyst (260 mV). Consequently, the electrolytic cell structured with the bifunctional electrodes (NiCo-LDH@NiCoP/NF||NiCo-LDH@NiCoP/NF) required only 1.4 V@10 mA cm −2 in 1.0 M KOH for full water electrolysis, significantly outperforming that of the cell using full noble metal cell (1.51 V for Pt/C||RuO 2 ).
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CARBON
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2026
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IF 12.7
Qiulan Zhou,Neng Li,Jingjing Liu,Guiyuan Chen,Xin Qin,Zhicheng Wang,Yongfang Wei,Zhen Liu
Direct seawater electrolysis offers a sustainable pathway for large-scale hydrogen production but is fundamentally limited by chloride-induced corrosion, parasitic chlorine chemistry, and rapid catalyst degradation at industrial current densities. Here, we report a Ru-doped Ni-based-layered double hydroxide integrated with a pyrolyzed wood-derived carbon scaffold (NiRu-LDH@pWD) that addresses these issues through synergistic electronic structure and electrode architecture engineering. Ru doping reconfigures the local electronic environment of Ni, strengthens Ni–O coordination, downshifts the d -band center, and suppresses Cl∗ adsorption, thereby enhancing catalytic selectivity and stability in chloride-rich electrolytes. Concurrently, Ru doping induced lattice modulation promotes preferential exposure of catalytically active (012) edge planes. The hierarchically porous pWD carbon scaffold enables rapid charge transport, efficient ion diffusion, and superaerophobic gas release, sustaining high-rate operation. As a result, the NiRu-LDH@pWD electrode delivers low overpotentials for HER (74.7 mV in 1 M KOH and 101.1 mV in seawater) and OER (240 mV in 1 M KOH and 260 mV in seawater) at 10 A cm −2 , and exhibits >1000 h operational durability at 1 A cm −2 in seawater. An anion exchange membrane water electrolyzer assembled with NiRu-LDH@pWD achieves a low cell voltage of 2.01 V at 1 A cm −2 with negligible performance decay, meanwhile techno-economic analysis estimates a competitive hydrogen production cost of ∼US$0.35 kg −1 by ASPEN calculation. This work establishes an integrated strategy that couples atomic-scale electronic regulation with macroscopic electrode design to enable selective, durable, and economically viable seawater electrolysis.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yachao Huang,Hailong Zhong,Qihong Zhou,Wenqi Feng,Huan Li,Jinming Zeng,Chao Liu,Xiaopeng Qi
Developing a bifunctional catalyst that combines low cost and high performance for water electrolysis remains an unsolved challenge. In this study, a Cr-doped transition metal-based electrocatalytic material is synthesized on a stainless steel mesh substrate. The obtained Cr 0.2 -CoP/SS catalyst exhibits an overpotential of only 98 mV for the hydrogen evolution reaction (HER) at 10 mA cm −2 in alkaline electrolyte, and exhibits an overpotential of 254 mV for the oxygen evolution reaction (OER); in acidic electrolyte, the HER overpotential at 10 mA cm −2 is as low as 118 mV, and it demonstrates excellent stability. Furthermore, when Cr 0.2 -CoP/SS is used in traditional overall water splitting systems, the required voltage at 10 mA cm −2 is as low as 1.56 V. Theoretical studies show that Cr doping reduces the Gibbs free energy of hydrogen adsorption and narrows the bandgap to zero, which enhances catalytic activity and structural stability.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Lichan Wu,Liuyan Zhang,Yidong Huang,Zeyi Guan,Renyu Zhou,Yan Pan,Danting Wu,Gengzhe Shen,Yanmei Zhang
Developing efficient bifunctional electrocatalysts capable of facilitating water splitting to produce hydrogen and oxygen remains a significant challenge. This study presents a controllable conversion of MOFs to carbon-coated NiCoP nanostructures via low-temperature phosphidation using a NiCo-MOF/Ti 3 C 2 T x precursor, leading to the construction of the NiCoP@C/Ti 3 C 2 T x bifunctional electrocatalyst. Characterization of the synthesized NiCoP@C/Ti 3 C 2 T x composite material and electrochemical testing revealed that the material exhibits high catalytic activity in both HER and OER. At a current density of 10 mA cm −2 , the overpotential for HER is measured at 58 mV with a Tafel slope of 60 mV dec −1 , while the overpotential for OER is found to be 240 mV, with a Tafel slope of 42 mV dec −1 . The potential required to achieve a current density of 10 mA cm −2 for overall water splitting is 1.53 V, which is lower than commercial Pt/C and RuO 2 electrocatalysts. Additionally, the material demonstrates excellent electrocatalytic performance at higher current densities. The outstanding electrocatalytic performance is attributed to the effective stabilizing effect of the carbon-coated layer on the high-activity NiCoP particles, thereby suppressing the loss of active sites during the reaction. Moreover, the strong interfacial coupling effect between NiCoP and Ti 3 C 2 T x significantly enhances the interfacial charge transfer kinetics, consequently improving catalytic efficiency.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Siraj Ullah,Waqas Ahmed,Shuozhen Hu,Xinsheng Zhang
Electrochemical water splitting is a potential method for sustainable hydrogen production. Achieving efficient and durable bifunctional electrocatalysts for alkaline water splitting remains challenging due to sluggish OER/HER kinetics and a reliance on noble metals. Here, we introduce MX-CoFe/EMN, a binder-free hybrid electrocatalyst fabricated by sequential electrodeposition of Ti 3 C 2 T x MXene integrated CoFe layered double hydroxide (LDH) nanosheets onto nickel foam. Combining CoFe LDH with MXene, which serves as both conductive scaffold and active component, yields beneficial interfacial electronic interactions, enhanced charge transfer, and a high density of active sites. In 1.0 M KOH, MX-CoFe/EMN shows low overpotentials of 260 mV (OER) and 279 mV (HER) at ±100 mA cm −2 , small Tafel slopes 39 mV dec −1 (OER), 68 mV dec −1 (HER), and excellent durability of over 80 h at ±500 mA cm −2 . These findings demonstrate a scalable electrodepositin-based approach for developing highly active and durable non-noble-metal electrocatalysts for sustainable hydrogen generation.
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