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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高影响因子
CARBON
·
2026
·
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
·
2026
·
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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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Junshan Ding,Chao Yang,Xinqiang Xiao,Yu Hu,Liangzhe Chen,Wentao Tang,Youbing Zhang,Jing Ding,Jun Wang,Heng Ke
Developing metal nanoparticles (NPs)/carbon composite nanomaterials as electrocatalysts for hydrogen evolution reaction (HER) via a facile and low-cost strategy has attracted widely attention over the past decade. Herein, a series of nickel nanoparticles/carbon materials (Ni/C-m) composite electrocatalyst has been successfully synthesized via a simple molten salt pyrolysis method. Characterizations demonstrated that carbon materials can effectively prevent Ni nanoparticles aggregation and adjust the electron cloud density in Ni/C-m samples. During the preparation of Ni/C-m, the carbon content can be adjusted by varying the mass of sodium citrate, an appropriate carbon content can enhances electron transfer and promotes electrocatalytic HER activity. Ni/C-m exhibits better electrocatalytic HER activity than Ni sample which prepared without carbon materials precursor. The as-prepared Ni/C-0.8 composites electrocatalyst exhibits the lowest overpotential among all Ni/C-m samples (-109 mV at -10 mA cm-2 and -397 mV at -200 mA cm-2) and long-time stability. This research presents a new method for fabricating and designing a cost-effective, high-performance HER electrocatalyst for practical water splitting applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Zhixiang Chen,Longhai Zhang,Weiquan Tan,Lei Shi,Zheng Chen,Qi Sun,Keliang Wang,Weiyue Zhao,Zhiming Cui
Achieving high activity and stability while reducing Pt loading remains a major challenge in developing cathode oxygen reduction reaction (ORR) catalysts for H 2 /air fuel cell. Here, a novel low-Pt intermetallic nitride catalyst (PtFe 3 N) consisting of a strained Pt shell and an antiperovskite-type PtFe 3 N core on a confinement-effect carbon support are synthesized via an initial impregnation-co-reduction strategy. The MEA with PtFe 3 N/DMC as cathode yields a current density of 1370 mA cm −2 at 0.6 V and maximum power density of 0.92 W cm −2 , significantly outperforming that of Pt/C benchmark (1170 mA cm −2 and 0.79 W cm −2 ). Besides, the PtFe 3 N/DMC enabled MEA has a lower performance decay rate (1.9%) compared to the MEA with Pt/C (48.2%). EXAFS, XPS and DFT calculations jointly support that the cooperative strain effects induced by Fe and N endows PtFe 3 N with an optimal Pt d-band center position and accelerated kinetics. Furthermore, the introduction of N elements promoted the strong metal-N interactions, which effectively suppress Fe dissolution and significantly improve the ORR durability under operating conditions. This work provides a novel strategy for low-Pt intermetallic to enhance the corrosion resistance of 3d transition metals and to improve the ORR activity.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 3
·e70185
·
IF 12.1
Chenyang Shu,Yimin Chen,Chuanlan Xu,Xinru Xu,Lingtao Sun,Jiayi Niu,Cherkasova Tatiana,Chaozhong Guo,Yuan Niu,Quan Xu
en This link goes to a English section zh This link goes to a Chinese section Platinum (Pt)-based catalysts are crucial for the commercialization of hydrogen/metal air batteries, but they suffer from Pt scarcity, high cost, and nanoparticle dissolution/agglomeration, mainly leading to performance degradation. We address this by synthesizing a PtFe alloy catalyst (PtFe–PA–NC) via a phytic acid (PA) assisted pyrolysis strategy, featuring Pt-skin-coated PtFe alloy nanoparticles on hierarchically porous N-doped carbon (NC). PA treatment simultaneously enhances the support's surface area and pore structure for better mass transport, and incorporates P into the carbon framework via P–C bonds. It can induce charge delocalization, regulating the electronic structure of PtFe alloys and strengthening Pt–Fe coupling. The Pt-skin suppresses Fe dissolution, whereas the PtFe core optimizes oxygen reduction reaction (ORR) intermediate adsorption (e.g., *OH). Theoretical calculations confirm that the Fe atom adjusts the d-band center of the Pt atom, intensifying oxygen binding and shifting the rate-determining step. Electrochemically, PtFe–PA–NC achieves a half-wave potential of 0.85 V and retains 95.8% of specific energy density after more than 140 h in zinc-air batteries. In alkaline fuel cells, it delivers a peak power density of 508 mW cm −2 at an ultralow Pt loading (0.017 mg cm −2 ), approximately twice that of 5 wt% Pt/C (0.025 mg cm −2 ). This work showcases synergistic electronic and interfacial regulation through heteroatom doping and alloying, promoting high-performance hydrogen/metal air batteries. 摘要 en This link goes to a English section zh This link goes to a Chinese section 铂基催化剂是氢/金属空气电池商业化的关键,但铂资源稀缺、成本高昂且纳米颗粒易溶解/团聚 , 是导致其性能衰减的主要原因。为此 , 本论文通过植酸(PA)辅助热解策略合成了一种 PtFe合金催化剂(PtFe–PA–NC) , 其结构为: Pt 壳层包覆的PtFe合金纳米颗粒负载于分级多孔氮掺杂碳(NC)载体上。通过植酸处理过程可同时实现了两个效果 : 一是提升了载体的比表面积与孔结构, 优化了传质效率 ; 二是通过 P–C 键将磷引入碳骨架,诱导电荷离域 , 从而调控 PtFe 合金的电子结构、强化 Pt–Fe 耦合作用。其中, Pt 壳层可抑制 Fe 的溶解, 而 PtFe 核则能优化氧还原反应(ORR)中间产物(如 * OH)的吸附行为。理论计算表明: Fe 原子可调节 Pt 原子的 d 带中心, 增强氧的结合作用并改变反应的决速步。电化学测试表明: 在锌空气电池中, PtFe–PA–NC 的半波电位达 0.85 V, 且在 140 h 以上的运行后仍保持 95.8% 的能量密度; 在碱性燃料电池中, 当 Pt 载量低至 0.017 mg cm −2 时, 其峰值功率密度达 508 mW cm −2 , 约为商用 5 wt% Pt/C (载量为 0.025 mg cm −2 ) 的两倍。本研究工作通过杂原子掺杂与合金化实现了电子结构与界面的协同调控, 为高性能氢/金属空气电池的开发提供了新思路。
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Jiao Yang,Lishan Peng,Youpeng Cao,Lun Li,Zhichao Yu,Chengcheng Zhong,Wendi Zhang,Weng Fai Ip,Hui Pan
The precise construction of highly dispersed monometallic composites with abundant grain boundaries, beyond conventional gradient or core–shell structures, remains a key challenge. Herein, we report a chlorine-mediated strategy to achieve monometallic Ru–RuO2 featuring a high density of well-defined heterointerfaces. By leveraging the distinct binding energies of Ru–O and Ru–Cl, a controlled in situ reduction process selectively converts Cl-occupied regions in a RuOCl precursor into metallic Ru domains, yielding an intimately interwoven Ru/RuO2 heterostructure. This unique architecture provides a high density of interfacial active sites, leading to exceptional pH-universal hydrogen evolution reaction (HER) performance. The optimized Ru/RuO2 catalyst achieves remarkably low overpotentials of 22, 54, and 26 mV at 10 mA cm−2 in 1 M KOH, 1 M phosphate buffer solution (PBS), and 0.5 M H2SO4, respectively, surpassing commercial Pt/C. Density-functional-theory (DFT) calculations illustrated that the remarkable HER activity stems from synergistic metal–oxide interactions: RuO2 promotes efficient water dissociation, while adjacent metallic Ru sites optimize hydrogen adsorption, collectively accelerating the HER kinetics. This work provides a general design strategy for constructing high-performance heterointerface-enriched electrocatalysts.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Xuepeng Wang,Yimin Xiong,Wei Deng,Jun Xu,Kai Xu,Long Jiang,Yi Wang,Sheng Su,Song Hu,Jun Xiang
Bio-oil from renewable biomass pyrolysis holds great potential as a feedstock for upgrading into biofuels and value-added chemicals. However, its water-insoluble fraction presents challenges for upgrading due to its high molecular weight, compositional complexity, and tendency to coke under heat, often requiring harsh conditions and facing catalyst deactivation. Here, we report a mild and efficient electrochemical conversion system tailored for the bio-oil–water-insoluble fraction. By integrating methanol-assisted hydrogen-transfer and metal nanoparticle synergistic catalysis, we suppressed competitive reactions and promoted the diffusion and hydrogenation of the water-insoluble components, enabling their conversion into hydrocarbon fuels under ambient conditions. At a current density of 100 mA cm–2, the system achieved a peak Faradaic efficiency of 21.30% within the first 30 min, while hydrocarbons accounted for over 98% of the products detected by gas chromatography–mass spectrometer. The catalytic performance of the system remained stable within 7 cycles, and the recovery rate of the catalyst exceeded 94%. Combined experimental and theoretical insights elucidate the competitive reactions among the water-insoluble fraction. This work represents an important step toward the mild and efficient full-fraction conversion of bio-oil and its practical utilization.
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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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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Lixin Wang,Renjie Ji,Chunge Wang,Fanbo Meng,Zhongwu Luo,Mengran Wang,Hui Jin,Shijie Yang,Shi’an Zhao,Dahao Han,Yongjie Cheng,Tianyu Liu,Jianmin Ma,Yonghong Liu
To address the limited activity and durability of oxygen evolution reaction (OER) electrocatalysts, we present an integrated in situ strategy for constructing a three-dimensional Ni-Co dendritic electrode matrix coupled with a surface amorphous Ni-Co-Fe layered double hydroxide (LDH) catalytic layer. A Ni-Co dendritic matrix (NCDEM) with enhanced electrolyte accessibility and mass transport properties is first fabricated via jet electrodeposition, followed by the in situ hydrothermal growth of Ni-Co-Fe LDH nanosheets to construct a Ni-Co-Fe dendritic electrode (NCFDE). The introduction of NaBO₂ during the hydrothermal process regulates surface etching kinetics and the Fe³ ⁺ coordination environment, promoting uniform nanosheet growth and triggering the crystalline-to-amorphous transition of the LDH structure. The amorphous LDH layer increases the accessible active surface area, facilitates the formation of reconstructed NiOOH active species during OER, and enhances structural stability during prolonged electrochemical operation. The optimized B2-NCFDE exhibits outstanding OER performance in 1 M KOH, requiring an overpotential of only 215.34 mV to achieve 100 mA cm⁻², with a Tafel slope of 38.29 mV dec⁻¹ and stable operation at 500 mA cm⁻² for 2000 h. Furthermore, the B2-NCFDE||B2-NCFDE electrolyzer achieves 100 mA cm⁻² at a cell voltage of 1.822 V and demonstrates excellent durability for overall water splitting. This work provides a scalable strategy that integrates electrode architecture engineering with amorphous LDH regulation for efficient and durable hydrogen production.
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高影响因子
危险品化学品经营许可证（带存储）