JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 24
·14872-14883
·
IF 3.442
Wang Yunpeng,Ma Bo,Chen Yantao
Development of inexpensive and high-performance electrocatalysts for water splitting is the major challenge for the scale-up production of gaseous hydrogen. Iron foam, which is composed of the second most abundant metal element on the earth, can boost the water splitting reactions after a simple treatment of surface phosphorization. The as-prepared electrocatalyst, which is denoted as FeP x @Fe, exhibits an excellent activity in alkaline solutions, and requires overpotentials of 124 and 274 mV to approach 10 mA cm −2 for hydrogen evolution reaction and oxygen evolution reaction, respectively. Meanwhile, FeP x @Fe also shows a remarkable performance on overall water splitting, which only needs 1.67 V to reach 10 mA cm −2 and exhibits a satisfying long-term durability. The fabrication strategy of surface phosphorization on iron foam to obtain FeP x @Fe can be valuable for the application of non-noble-metal electrocatalysts toward water splitting.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2017
·Vol. 9
·期 8
·563
·
IF 1.832
Jianping Cao,Chaosheng Zhang,Hongwei Rong,Meihua Zhao,Wei Wei,Limin Zhao
The effects of different types and concentrations of electron donors (glucose, starch, methanol and sodium acetate) on the formation of phosphine from anaerobic activated sludge that has been domesticated for a prolonged period were studied in small batch experiments. The results show that types and concentrations of electron donor have significant effects on the production of phosphine from anaerobic activated sludge. Among them, glucose was the most favourable electron donor, whereas sodium acetate was the least favourable electron donor for the removal of phosphorus and the production of phosphine. Higher concentrations of electron donors were more favourable for the reduction of phosphate into phosphine, and supplying more than nine times the amount of electron donor as theoretically required for the reduction of phosphate into phosphine was favourable for the production of phosphine.Keywords:anaerobic activated sludge;electron donor;phosphine;matrix-bound phosphine (MBP)
研究领域:
环境生物学
·
废水处理
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Jinghui Shi,Fen Qiu,Wenbo Yuan,Manman Guo,Zhang-Hui Lu
Designing efficient non-precious electrocatalysts to facilitate overall water splitting is crucial and highly desirable but remains challenging. In this study, we synthesized nitrogen-doped carbon-decorated CoP@FeCoP yolk-shelled micro-polyhedras (denoted as CoP@FeCoP/NC YSMPs) via the phosphorization of ZIF-67@Co-Fe Prussian blue analogues YSMPs. The yolk-shelled construction and nitrogen-doped carbon matrix can effectively reduce the degree of CoP agglomeration, which is beneficial for increasing the specific surface area and active sites of the catalysts. The synergistic effect of yolk-shelled structure and nigtrogen-doped carbon matrix also optimizes the electronic structure and enhances the electrocatalytic activity of CoP@FeCoP/NC YSMPs. In an alkaline electrolyte, the overpotentials of hydrogen evolution reaction and oxygen evolution reaction only need 141 and 238 mV, respectively, to drive the current density of 10 mA cm −2 . When a two-electrode water splitting device was conducted with the as-prepared catalyst, it required only a low cell voltage of 1.68 V to achieve a current density of 10 mA cm −2 and displayed outstanding stability over 20 h. This work offers insights into the facile, controllable synthesis strategy of various non-precious metal nanomaterials for high-efficiency water splitting electrocatalysis.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2024
·
IF 2.9
Jianzhi Wang,Jie Yang,Fuhua Huang,Yuru Li,Yu Luo,Yanan Xue,Ning Cai,Hui Li,Faquan Yu
The design of efficient, stable and cost-effective electrocatalysts for hydrogen evolution reaction holds substantial significance in water electrolysis, but it remains challenging. Tremella-like nickel-molybdenum bimetal phosphide encapsulated cobalt phosphide (NiMoP/CoP) with hierarchical architectures have been effectively synthesized on nickel foam (NF) via a straightforward hydrothermal followed by a low-temperature phosphating method. Based on the unique structural benefits, it significantly increases the number of redox active centers, enhances the electrical conductivity of materials, diminishes ion diffusion path lengths, thereby promoting the efficient electrolyte penetration and reducing the inherent resistance. The as-obtained NiMoP/CoP/NF electrocatalyst exhibited remarkable catalytic activity with a ultralow overpotential of 38 mV (10 mA cm-2) and low Tafel of slope (83 mV dec-1). The straightforward synthesis process and exceptional electrocatalytic properties of NiMoP/CoP/NF demonstrate great potential for HER to replace the precious metal catalyst.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2025
·Vol. 27
·期 8
·2276-2285
·
IF 9.2
Lixia Wang,Jiasui Huang,Jia Huang,Bowen Yao,Aling Zhou,Zhiyang Huang,Tayirjan Taylor Isimjan,Bao Wang,Xiulin Yang
Zinc–air batteries (ZABs) are considered a promising energy storage technology due to their high energy density and environmental friendliness. However, the development of efficient and durable oxygen reduction reaction (ORR) catalysts remains a challenge. Herein, we report the synthesis of a highly efficient CoP/Cu3P@NC catalyst using a Zn-MOF template, which was transformed into N- and C-doped bimetallic phosphides via high-temperature phosphating. The CoP/Cu3P@NC-based ZAB exhibits remarkable performance with an open-circuit voltage of 1.50 V, a peak power density of 215 mW cm−2, and a specific capacity of 691 mA h gzn−1, outperforming conventional Pt/C-based ZABs. The catalyst maintained 93.5% of its initial activity after 300 h of cycling, demonstrating its excellent long-term stability. Furthermore, CoP/Cu3P@NC was applied in flexible ZABs, achieving a power density of 74 mW cm−2 and showing stable performance under various bending conditions. The superior performance is attributed to the synergistic effects of Co and Cu, optimized structural properties, and high porosity, enhancing mass transfer and oxygen activation. These results suggest that CoP/Cu3P@NC is a highly promising ORR catalyst for next-generation ZABs, offering both high efficiency and durability in flexible and conventional energy storage applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2024
·
IF 3.3
Liguang Gan,Changxu Ye,Tianshu Pi,Lingling Wang,Chunya Li,Long Liu,Tianzeng Huang,Tieqiao Chen,Li-Biao Han
An efficient method for the construction of C–P(V) and C–P(III) bonds via the iron-catalyzed phosphorylation of alcohols under ligand-free conditions is disclosed. This strategy represents a straightforward process to prepare a series of phosphine oxides and phosphine compounds in good to excellent yields from the readily available alcohols and P–H compounds. A plausible mechanism is also proposed. We anticipate that this mode of transforming simple alcohols would apply in chemical synthesis widely.
研究领域:
有机化学
·
合成化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Shifu Wang,Zuoyi Xiao,Shangru Zhai,Guoxiang Wang,Qingda An,Dongjiang Yang
To effectively enhance the overall electrochemical performance of supercapacitors , a high-temperature phosphorization strategy was developed to fabricate core-shell Ni-Ni x P y @C nanocomposite-immobilized sponge-like P-doped porous carbon (Ni-Ni x P y @C/P-HPC). The Ni-Ni x P y @C/P-HPC was successfully constructed by a cross-linking process and subsequent high-temperature calcination . During the pyrolysis process in N 2 multiple steps, including phosphating metal ions to Ni-Ni x P y nanoparticles , forming core-shell Ni-Ni x P y @C nanocomposites, doping P element into carbon skeleton and immobilizing core-shell Ni-Ni x P y @C nanocomposites onto porous carbon, were achieved simultaneously. The Ni-Ni x P y @C/P-HPC was studied using various characterization techniques. The results revealed that the obtained material integrated the advantages of interconnected P-doped framework (fast ion transport), nickel and nickel phosphide species (high theoretical specific capacitance), and graphene-like shell (excellent electrical conductivity and effective protection for activate sites). Therefore, the as-prepared hybrid delivered the outstanding electrochemical performance with ultrahigh specific capacity of up to 1275 F g −1 at 1 A g −1 and an excellent cycling stability with 92.5% capacity retention after 5000 cycles. Besides, the asymmetric supercapacitor using Ni-Ni x P y @C/P-HPC-900 and activated carbon as the anode and cathode materials exhibited a high energy density of 49.4 W h kg −1 at 250 W kg −1 , and remained as high as 30.6 W h kg −1 even at 5000 W kg −1 . Our research will open up a new way to synthesize transition metal phosphide@carbon composites with excellent electrochemical properties.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Wen-Kun Gao,Jing-Qi Chi,Zhong-Bing Wang,Jia-Hui Lin,Da-Peng Liu,Jing-Bin Zeng,Jian-Feng Yu,Lei Wang,Yong-Ming Chai,Bin Dong
Exploring low-cost and outstanding bimetallic phosphides to substitute noble metals as electrocatalysts for oxygen evolution reaction (OER) in alkaline media is essential for renewable energy technologies. Herein, bimetallic nickel-iron phosphides nanoparticles (P-NiFe-800 NPs) with rich defects have been synthesized through gas annealing at 800 °C and phosphorization using uniform nickel-iron nanocubes (NiFe NCs) as precursor. At optimized calcination temperature, the obtained P-NiFe-800 NPs are composed of uniform nanoparticles with the rough surface, which suggests the larger surface area and more exposed rich active sites than other samples for OER. The introduction of P element to binary nickel-iron metals can optimize the crystalline and electronic structures of NiFe NCs and thus enhance electrocatalytic properties . Owing to the distinct morphological structure and synergistic effect between nickel-iron and phosphorus, P-NiFe-800 NPs demonstrate superior electrocatalytic activities for OER with lower overpotential of 270.1 mV to achieve a current density of 10 mA cm −2 , smaller Tafel slope of 39 mV dec −1 , lower electrochemical impedance spectroscopy (EIS) value, bigger determined double-layer capacitance (C dl ) of 2130 uF cm −2 and prominent stability than NiFe NCs, NiFe-600 NPs, NiFe-700 NPs, NiFe-800 NPs, NiFe-900 NPs, P-NiFe NCs, P-NiFe-600 NPs, P-NiFe-700 NPs and P-NiFe-900 NPs. The optimized phosphorization is helpful for fabricating the bimetallic phosphides as efficient catalysts for OER.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yuhu Feng,Mengran Lou,Luxiang Wang,Shengjiao Wen,Yang Wang,Ruiying Wang
Transition metal phosphides (TMPs) are often considered as a cost-effective replacement for precious metal catalysts in hydrogen evolution reaction (HER). Herein, the fibers are produced by combining coal with electrospinning technology, and then undergoing a pre-oxidation process for transforming into pre-oxidized coal-based fibers. Subsequently, CuCo-metal organic framework (CuCo-MOF) is grown on the pre-oxidized coal-based fibers using solvothermal method, and the Cu 3 P/Co 2 P/coal-based carbon fibers (Cu 3 P/Co 2 P/C-CFs) composite catalyst is successfully fabricated by phosphating at low temperature and carbonizing at high temperature. The uniformly grown nanoparticles (NPs) on the surface of C-CFs enhance the electrochemically active area, while the electron transfer between Cu 3 P and Co 2 P effectively modulates the electronic structure, increasing the catalytic activity of the catalyst for HER. In addition, the flexible C-CFs not only serve as self-supporting electrode but also effectively inhibit the agglomeration of Cu 3 P/Co 2 P NPs. Remarkably, the overpotential of Cu 3 P/Co 2 P/C-CFs is 83 mV at 10 mA cm −2 current density for HER in 0.5 mol L −1 H 2 SO 4 solution. This study presents promising strategies for the high value-added utilization of coal and the synthesis of highly effective non-precious metal catalysts.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Xinyue Wei,Linyin Huang,Yuan Yu,Dongfeng Sun,Yanning Qu,Xiaoya Yuan,Jianlong Wen,Qingmei Su,Fangyou Meng,Gaohui Du,Bingshe Xu,Kai Wang
The crystalline CoP@ amorphous WP 2 core–shell nanowire arrays are oriented grown on the Ni foam (CoP@WP 2 /NF). The amorphous WP 2 shell provides more active sites, and the interface charge coupling accelerates the kinetic of the catalytic reaction, making the CoP@WP 2 /NF catalysts excellent activity. In acidic, only 13 and 97 mV overpotentials are needed to reach 10 mA cm −2 and 100 mA cm −2 , respectively, which are the lowest overpotentials among all reported Transition metal phosphide (TMP) catalysts, of course, much lower than that of the Pt/C catalyst (31 mV at 10 mA cm −2 , 120 mV at 100 mA cm −2 ). In alkaline, the Hydrogen evolution reaction (HER) overpotentials at 10 mA cm −2 and 100 mA cm −2 are 68 and 136 mV, respectively, which are also lower than that of most reported TMPs catalysts. The CoP@WP 2 /NF catalysts also show excellent Oxygen evolution reaction (OER) performance in alkaline, and its OER overpotential at 10 mA cm −2 is only 254 mV. The voltage of the CoP@WP 2 /NF-2h‖CoP@WP 2 /NF-2 h cell is only 1.37 V at 10 mA cm −2 , which is even lower than that of Pt/C‖Ru 2 O cell (1.52 V). Specially, when the current density is greater than 150 mA cm −2 , the energy consumption advantage of the CoP@WP 2 /NF-2 h‖CoP@WP 2 /NF-2 h cell is more obvious.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Engineering
·
2022
·
IF 12.834
Chen Hu,Yanjie Hu,Aiping Chen,Xuezhi Duan,Hao Jiang,Chunzhong Li
Tin phosphides are attractive anode materials for ultrafast lithium-ion batteries (LIBs) because of their ultrahigh Li-ion diffusion capability and large theoretical-specific capacity. However, difficulties in synthesis and large size enabling electrochemical irreversibility impede their applications. Herein, an in situ catalytic phosphorization strategy is developed to synthesize SnP/CoP hetero-nanocrystals within reduced graphene oxide (rGO)-coated carbon frameworks, in which the SnP relative formation energy is significantly decreased according to density functional theory (DFT) calculations. The optimized hybrids exhibit ultrafast charge/discharge capability (260 mA·h·g −1 at 50 A·g − 1 ) without capacity fading (645 mA·h·g − 1 at 2 A·g − 1 ) through 1500 cycles. The lithiation/delithiation mechanism is disclosed, showing that the 4.0 nm sized SnP/CoP nanocrystals possess a very high reversibility and that the previously formed metallic Co of CoP at a relatively high potential accelerates the subsequent reaction kinetics of SnP, hence endowing them with ultrafast charge/discharge capability, which is further verified by the relative dynamic current density distributions according to the finite element analysis.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Shanfu Sun,Ming Zheng,Pengfei Cheng,Fugui Wu,Luping Xu
Developing oxygen evolution reaction (OER) catalysts with high activity and long-term stability is critical to achieving efficient hydrogen production from water electrolysis. Herein, a porous bimetallic cobalt-iron phosphide (CoFe-P) nanofoam is synthesized via a novel one-pot glucose-blowing followed by oxidization and then phosphidization process. The CoFe-P nanofoam presents a porous nanostructure which contributes to contact with electrolytes and release of generated gas during electrocatalytic reactions. As OER catalysts in alkaline, the bimetallic porous CoFe-P nanofoam exhibit a lower overpotential (258 mV@10 mA cm −2 ) as well as outstanding stability (70 h@100 mA cm −2 ), which surpasses the RuO 2 and is comparable to many high-performance Co and Fe-based catalysts. It is demonstrated that the surface of CoFe-P undergo a reconstruction process and form new high active (Co x Fe 1−x )OOH. Density functional theory (DFT) calculations reveal that the elevated activity is caused by the bimetal Co and Fe optimizing the d -band center ( E d ) energy levels and thus balancing the adsorption–desorption capacities for OER intermediates. This work through constructing porous bimetallic nanofoam offers a feasible strategy to facilitate the reaction activity and prolong the long-term stability of OER.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）