ACS Catalysis
·
2024
·
IF 11.3
Xiaoli Sun,Jie Liu,Yunmei Du,Yanru Liu,Wenna Wang,Dehong Chen,Ruiyong Zhang,Lei Wang
Constructing multifunctional electrodes with high metal utilization by a one-step synthesis strategy is a serious challenge. Herein, Zn-IrP2/FeP with dual-functional activity induced by trimetallic sites are constructed by the “one-step phosphorization”. Relevant characterizations and DFT calculations reveal that Ir and Fe act as the HER and HzOR sites, respectively, promoting the overall hydrazine splitting (OHzS) at the industrial-level current. Specially the Zn dopant, as an auxiliary active site for Ir–Fe dual-active sites, optimizes the physical structure, electronic configuration, d-band center, and adsorption intermediate capabilities of the Zn-IrP2/FeP/IF electrode from multiple perspectives. As expected, Zn-IrP2/FeP/IF only requires 223.0 and 382.0 mV to drive the industrial-grade current density of 1 A cm–2 for HER and HzOR, respectively. Notably, the voltage of the OHzS for Zn-IrP2/FeP/IF to reach 500 mA cm–2 is 1.38 V lower than that of the OWS. In summary, trimetallic sites exhibit synergetic electrocatalytic functions and synergistically maximize electrocatalytic efficiency. Moreover, the multiactive site mechanism of the dopant as an auxiliary active site is innovatively proposed in this work. This presents a valuable idea for designing multimetal catalysts with high metal utilization efficiency and in-depth investigation of catalytic mechanisms.
研究领域:
电化学
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材料科学
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催化
·
能源转换
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Shiqi Zhang,Ying Cheng,Zhiyuan Ni,Xuefei Lei,Biao Wang,Xuanwen Liu,Rui Guo
Reasonably designing and constructing transition metal based compounds with controllable composition and structure is a promising option for obtaining economically efficient oxygen evolution reaction (OER) electrocatalysts. This paper presents a one-pot self-templated epitaxial growth, phase transition and self-dissolution strategy for constructing hollow nanoboxes/solid nanocubes of CoFe bimetallic Prussian blue analogues (PBAs). The CoFe mixed phosphide with a porous hollow nanoboxes structure obtained after subsequent phosphating heat treatment exhibite enhanced OER electrocatalytic activity in alkaline media, exhibiting a low overpotential of 230 mV and a Tafel slope of 35.5 dec −1 at 10 mA cm −2 , as well as excellent stability for 48 h. The excellent OER activity of CoP-FeP nanoboxes (CoP-FeP NBs) can be attributed to the combination effect between their composition and structure. Structurally, the exquisite porous hollow nanoboxes structure greatly expands the surface area, reduces ion diffusion pathways, and reduces charge transfer resistance. Compositionally, the inner transition metal phosphide exhibits good conductivity and undergoes surface reconstruction during OER, forming high valence Co(Fe)OOH active substances in situ. The strong interface coupling effect of CoOOH/FeOOH optimizes the electronic structure. This work presents a facile and efficient strategy for the construction of PBAs hollow structural materials and the exploitation of low-cost and efficient electrocatalysts.
研究领域:
材料科学
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电化学
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纳米技术
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2026
·
IF 5.1
Zuhao Wang,Jie Gu,Yifan Leng,Long Cheng,Yuan-Yuan Hei,Chen Chen,Ruting Lin,Zonghua Pu,Hongfang Du,Liangxu Lin
Transition metal phosphides (TMPs) have emerged as promising and cost-effective electrocatalysts for the hydrogen evolution reaction (HER). However, their practical applications are hindered by insufficient catalytic performance. Herein, we develop a tunable cation vacancy engineering strategy to enhance the HER activity of FeP, one of the most inexpensive TMPs, via facile phosphidation and acid etching of zinc iron hexacyanoferrate (ZnFeHCF) with controllable Zn sacrificial agents. The non-exclusive incorporation of Zn²⁺ in the ZnFeHCF precursor ensures a uniform distribution of vacancies, while the adjustable Zn²⁺ content enables precise control of vacancy concentrations over a broad range (0.3-33.6%). Systematic investigations reveal that an optimal level of cation vacancies elevates the d-band center and strengthens hydrogen adsorption, thereby boosting the HER activity of FeP. Conversely, excessive cation vacancies induce severe lattice distortion and surface oxidation, resulting in deteriorated catalytic performance. At the optimized cation vacancy concentration of 16.2%, the FeP exhibits the best HER activity, with a small overpotential of 119 mV at 10 mA cm⁻², a low Tafel slope of 59.2 mV dec⁻¹, and excellent stability. This study demonstrates not only an efficient catalyst for HER but also an effective methodology for cation vacancy engineering of TMPs toward diverse applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Zhongxian Li,Xingzhao Wang,Yuewen Xu,Xiaoran Li,Jianchao Zhang,Yang Liu,Jiabing Luo,Yan Zhou
Slow mass transport and charge transfer restrict the electrocatalytic oxygen evolution reaction (OER) activity of FeP. Herein, we synthesized Fe-based bimetallic Prussian blue analogues (CoFe, NiFe, and CuFe-PBAs), and further prepared nitrogen-doped carbon anchored FeP-based heterostructures namely CoP-FeP/NC, Ni 2 P-FeP/NC, and Cu 3 P-FeP/NC using template-assisted and phosphating annealing strategies. It is worth noting that CoP-FeP/NC shows a hollow nanocubic structure, shortening the ion transport pathway and facilitating surface atom exposure, thus improving reaction kinetics. Meanwhile, the similar atomic radius of Co and Fe promotes the formation of stable CoP-FeP heterointerfaces with the same crystal system components and low lattice mismatch, inducing the electron transfer from Co to Fe and generating more low-valent Fe cations, thereby enhancing activity. Besides, Co and Fe sites underwent surface reconstruction into CoOOH and FeOOH active species, therefore achieving efficient synergistic electrocatalytic OER. As a result, CoP-FeP/NC exhibits superior OER activity (254 mV@10 mA cm −2 ) than Ni 2 P-FeP/NC and Cu 3 P-FeP/NC in 1.0 M KOH solution, even exceeds commercial RuO 2 (266 mV@10 mA cm −2 ), and presents no obvious performance decay (11.26 %) after continuous electrolysis at 100 mA cm −2 for 100 h, showing practical application prospects. Our work provides a general approach for preparing efficient and stable FeP-based heterostructures as OER electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Jiahui Wang,Jingbiao Ge,Huihui Xue,Yang Yang,Sujuan Zhang,Xiuzhen Zheng,Shifu Chen
Photocatalytic water splitting is an effective way to produce H2 and a key research direction in H2 energy development. In this paper, a Fe/FeP/ZnIn2S4 (Fe/FeP/ZIS) composite was prepared by a self-assembly method, with 2D Fe/FeP nanorods attached to the surface of 3D ZnIn2S4 (ZIS) microflowers. When the mass percentage of Fe/FeP loading was 5%, the Fe/FeP/ZIS heterojunction exhibited the best photocatalytic performance (4.56 mmol·g–1·h–1), much higher than that of Fe/FeP and ZIS. The significantly enhanced activity of Fe/FeP/ZIS was ascribed to the close interface contact formed between Fe/FeP and ZIS, which accelerated the separation and transfer of photogenerated charge carriers (PCCs). This study not only offers a reference for the design of novel non-noble cocatalysts but also promotes the improvement in the utilization efficiency of PCCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Fang Li,Jing Cao,Huiqin Yu,Haili Lin,Shifu Chen
The electrocatalytic overall urea splitting can achieve the dual goals of urea treatment and hydrogen energy acquisition. Herein, we exploited the principle of precipitation dissolution equilibrium to obtain bimetallic phosphide FeP/Cu3P/CF for the simultaneous oxidation of urea and reduction of water and comprehensively reveal the inherent molecular thermodynamic mechanisms on the surface of catalysts. The excellent electrochemical performance can be derived from the super water affinity and synergistic effect. Especially, the theoretical calculation unveils that the synergistic effect between FeP and Cu3P can lower the activation energy required for urea electrooxidation, thereby promoting urea splitting. In situ differential electrochemical mass spectrometry (in situ DEMS) measurements further demonstrated that urea oxidation on FeP/Cu3P/CF proceeded according to the intramolecular mechanism. This work has laid the foundation for constructing highly efficient superhydrophilic bifunctional electrocatalysts.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Wenting Tong,Zhichao Ma,Wenjing Cao,Zhuli Zhang,Ming Li,Ming Wei,Wenbo Lu
The development of a simple, rapid, and accurate method for acetaminophen detection is of significant benefit for monitoring both drug abuse and acetaminophen contamination in water environments. Based on the bimetallic synergy, this study successfully developed an electrochemical sensor for acetaminophen using bimetallic transition metal phosphide FeP/NiP nanosheets. The structural and compositional information of FeP/NiP was analyzed using XRD, SEM, TEM, and XPS. The frontier molecular orbitals and electrostatic potential of acetaminophen were analyzed using Materials Studio software to predict the reaction mechanism. The performance parameters of the sensor were investigated employing electrochemical techniques including cyclic voltammetry, square-wave voltammetry and amperometric i–t curve. With a linear range of 0.25–1150 μM, a detection limit of 34 nM, a sensitivity of 618.97 μA·mM-1·cm-2 (S/N=3), and a 4 s response time, the developed sensor proved applicable for the quantification of acetaminophen in commercial tablets. This work offered a new paradigm for nanomaterial selection in the construction of acetaminophen electrochemical sensor, proposing bimetallic TMPs as a superior alternative.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Yuelong Xu,Na Li,Ran Wang,Liang Xu,Zhiwei Liu,Tifeng Jiao,Zhenfa Liu
Metal phosphides are usually being utilized for hydrogen evolution electrocatalysts with enormous potential. Meanwhile, the heterostructure can enhance the catalytic performance for hydrogen evolution reaction (HER). Inspired by the recent preparation of efficient catalysts for HER by using heterogeneous structures of different metal phosphides, we have designed a simple two-step method strategy based on sol-gel/carbonization to prepare the bimetal phosphide coated by nitrogen and phosphorus codoped (N,P-codoped) porous carbon . Phytic acid, chitosan and aniline are adopted to form the N,P-codoped porous carbon framework, the ferric chloride (FeCl 3 ) and ammonium molybdate tetrahydrate (H 8 MoN 2 O 4 ) are used as the metal sources to obtained bimetal phosphides (MoP/FeP). The heterostructural interface between the bimetal phosphides of MoP/FeP enhance the catalytic performance, while the N,P-codoped porous carbon promotes the development of reaction kinetics to accelerate the mass and electron transition. The prepared catalysts display limited overpotentials at high current density and exhibit good stability for long-time test. Density functional theory (DFT) is adopted to investigate the interact between the bimetal phosphides, which proves that the heterostructural interface can reduce the reaction Gibbs free-energy (△G H* ) and benefit the adsorption / desorption of intermediate H* . This work provides a facile route to the design of the metal phosphides for HER.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 35
·6178-6186
·
IF 3.756
Yaoyao Pan,Xiaoyu Huang,Yin Huang,Congyi Sheng,Xiuhua Wang
The design of efficient, stable, and non-noble metal-based bifunctional electrocatalysts remains a great challenge. The synergistic effect can adjust the local electronic structure to improve the catalytic performance. In this work, an Fe Prussian blue analog was grown in situ on the surface of NiCo precursor nanoneedles at room temperature, and then one-dimensional unique NiCoP@FeP hierarchical nanocomposites were constructed by subsequent phosphating. The optimized NiCoP@FeP with strong electronic interactions showed a low overpotential of 268 mV at 50 mA cm−2 for the OER and 75 mV at 10 mA cm−2 for the HER. Moreover, for water splitting, the bifunctional catalyst required only a low cell voltage of 1.58 V to reach a current density of 10 mA cm−2 with excellent durability. This work provides a new synthesis strategy to construct non-noble metal heterostructure bifunctional electrocatalysts using the Prussian blue analog in the future.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhaoqian Yan,Zhihao Sun,Anran Li,Hongshou Liu,Zihao Guo,Lanling Zhao,Jinkui Feng,Lei Qian
With high theoretical capacity (926 mAh g −1 ) and safer voltage platform, Iron phosphide (FeP) as an anode material for lithium ion batteries has attracted a lot of attention. However, FeP also suffers serious capacity fading and unsatisfied rate capability, which are triggered by inferior intrinsic conductivity and large volume expansion. Herein, oriented by density functional theory (DFT) calculations, MOF-derived porous FeP nanorods modified by abundant P vacancies (denoted as V-FeP) were ingeniously designed via a simplified approach to alleviate the above obstacles. As a result, the V-FeP nanorods electrode delivered extraordinary specific capacity (1228.3 mAh g −1 at 0.1 A g −1 after 120 cycles) and long-cyclic performance (590.7 mAh g −1 at 2.0 A g −1 after 1000 cycles). Transmission electron microscopy, X-ray absorption fine structure, electron paramagnetic resonance and so on were used to character the V-FeP nanorods. The results indicated the supernormal electrochemical performances of V-FeP nanorods were originated from abundant P vacancies and good distribution of FeP nanoparticles in conductive carbon network, which enhanced electrical conductivity, provided more active sites, shortened the diffusion distances of Li ions and relieved the volume variations. The strategy demonstrates a further direction to effectively improve the lithium storage performance of transition metal phosphides.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Zhaoqian Yan,Zhihao Sun,Kaicheng Yue,Anran Li,Hongshou Liu,Zihao Guo,Lei Qian
Iron phosphide (FeP) with high theoretical capacity (926 mAh g −1 ) and low voltage window for lithium-ion batteries (LIBs) arouses extensive concern. However, inferior electron conductivity and FeP aggregation limit its applications. To settle these drawbacks, with the Ni doping, Ni-FeP@carbon (Ni-FeP@C) core–shell structure prepared by solvothermal method and phosphating process has been designed as the anode material for LIBs. Ni doping not only affected the morphology of FeP, but also improved electrical conductivity and excellent structural stability, accelerating the migration of lithium ions. Carbon shell coating promoted electron transfer and suppressed the volume fluctuation of FeP during discharge and charge process. As a consequence, the Ni-FeP@C composite delivered outstanding specific capacity (855.7 mAh g −1 at 0.1 A g −1 ) and long-cyclic performance (488 mAh g −1 after 1000 cycles at 2.0 A g −1 ). For the assembled full cell, the battery exhibited the promising cycling performance (50.4 mAh g −1 after 70 cycles at 0.1 A g −1 ). As expected, cation doping strategy in this work is of great significance for the further application of FeP materials in advanced lithium ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Hafiz Muhammad Saleem,Mahmood Jamil,Mohammad Tabish,Asif Hussain Khoja,Ang Li,Dengke Wang,Huaihe Song
Transition-metal phosphides (TMPs), such as iron phosphide (FeP), are currently being contemplated as favorable high-performance anode materials for sodium-ion batteries (SIBs) because of their high theoretical capacity, cost-effectiveness, and availability. However, the inadequate electrochemical reaction dynamics and abrupt volumetric expansion of TMPs during cycling related to inferior conductivity constrain their commercial applications. Herein, we synthesized N,P-codoped onion-like carbon (NP-OLC)-encapsulated FeP (FeP@NP-OLC) using a simple injection pyrolysis method, followed by a successive low-temperature phosphidation treatment. NP-OLC, apart from constraining the volume variation of FeP, also encourages electron transfer to enhance the reversibility of FeP@C during the repeated cycling processes. Advancing from the distinctive onion-like structure, the FeP@NP-OLC nanospheres demonstrate outstanding sodium storage capability in terms of high capacity (543 mAh g–1 at 0.5 A g–1 at over 500 cycles), superb rate capacity (544 mAh g–1 at 2 A g–1), and long cyclic life (560 mAh g–1 at 1 A g–1 over 1100 cycles). The exceptional electrochemical performance is correlated to the meaningful involvement of pseudocapacitive behavior through the charge–discharge procedure, specifically at a high rate. Experimental results and theoretical calculations showed that the FeP and carbon interface with a defect can improve charge transfer and strengthen collaboration regarding active nanoparticles and sodium atoms, thereby boosting sodium storage. This facile strategy can be used to prepare other onion-like carbon-coated TMPs for future energy storage of commercial SIBs.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）