JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yi Gan,Youzhi Cen,Junchen Li,Xinyue Li,Keming Hu,Xiangyu Luo,Liwen Hu,Yang Song,Liangying Wen
Developing efficient and low-cost non-precious metal electrocatalysts for the alkaline HER is crucial for green hydrogen production. Nickel-rich phosphides (Ni 12 P 5 ) offer high conductivity but suffer from strong hydrogen adsorption, limiting their activity. This work presents a V doping strategy to directly modulate the electronic structure of pure-phase Ni 12 P 5 . V doping induces lattice distortion and drives the formation of a hierarchical porous nanoflower morphology, increasing the active surface area. More importantly, it optimizes the ΔG H* by downshifting the Ni d-band center and reduces the water dissociation barrier, enhancing intrinsic activity. The resulting V-Ni 12 P 5 /NF exhibits outstanding HER performance in 1 M KOH, with low overpotentials of 81 and 117 mV at 10 and 100 mA cm −2 , a Tafel slope of 60 dec −1 , and remarkable stability for over 230 h. This work demonstrates that rational heteroatom doping is an effective strategy for designing high-performance, stable, and cost-effective HER electrocatalysts.
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DOI
高影响因子
SOLID STATE IONICS
·
2021
·
IF 3.785
Songzhao Wang,Jiwen Hu,Xuefeng Gui,Shudong Lin,Yuanyuan Tu
Ni 12 P 5 has excellent electrochemical properties due to the existence of a large number of Ni P bonds with abundant phosphorus vacancies. RuO 2 has good electrical conductivity and catalytic activity , and its OER activity is very significant. In this paper, RuO 2 nanoparticles were loaded onto the surfaces of Ni 12 P 5 particles, forming RuO 2 /Ni 12 P 5 /C composite electrode catalytic materials which were prepared and applied to Li O 2 cells. The electrochemical tests reveal that the specific capacity of the Li O 2 battery with a RuO 2 /Ni 12 P 5 /C electrode reaches 4296 mAh g −1 , the cycle life reaches 56 cycles, and the over-potential is effectively controlled at the current density of 200 mA g −1 . This improvement is attributable to the effective adsorption of phosphorus vacancies in Ni 12 P 5 and the excellent OER catalytic activity of RuO 2 . Therefore, this work significantly enhanced the electrochemical performance of the cell, thus laying the foundation for the development of Li O 2 batteries.
研究领域:
电化学
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材料科学
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能源存储
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催化化学
·
纳米材料
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DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Jiangquan Lv,Yin Gao,Hanyang Liu,Zimin Han,Guoqing Feng,Rui Yang
Renewable-powered electrochemical CO2 reduction (ECO2R) provides a sustainable route to convert CO2 into valuable fuels and chemicals. However, conventional ECO2R systems face high energy costs due to the sluggish oxygen evolution reaction (OER) at the anode. Replacing the OER with biomass electrooxidation (e.g., glycerol oxidation reaction, GOR) can lower energy consumption while coproducing high-value chemicals. However, the construction of an efficient and cost-effective bifunctional catalyst remains a challenge. Herein, we design a low-cost, bifunctional Ni12P5@NCNT catalyst with a bamboo-like nanotube morphology for coupled ECO2R and GOR. The Ni12P5@NCNT exhibits exceptional performance, achieving 82% CO selectivity at −0.7 V vs RHE in ECO2R and a 95% Faradaic efficiency for formate production in GOR. The integrated system significantly reduces overpotential (219 mV) compared to conventional ECO2R //OER setups. Experiments reveal that the strong electronic interaction between Ni12P5 and NCNT enhances the CO2/glycerol adsorption and accelerates charge transfer, boosting both ECO2R and GOR activity. This work provides a promising strategy for co-upgrading CO2 and glycerol into valuable products using nonprecious metal catalysts.
研究领域:
电催化
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可再生能源
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环境化学
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材料科学
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可持续化学
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产品关联
DOI
高影响因子
ChemElectroChem
·
2018
·Vol. 5
·期 11
·1467-1473
·
IF 4.446
Bei Wang,Qiang Ru,Chiquan Su,Shikun Cheng,Peng Liu,Qing Guo,Xianhua Hou,Shichen Su,Francis Chi-Chung Ling
Graphical Easy, yet effective : A facile and cost-effective one-step strategy was introduced to fabricate a 3D mesoporous Ni 12 P 5 /carbon nanotubes (Ni 12 P 5 /CNTs) hybrid by using natural abundant and non-toxic red phosphorous (RP) at low-temperature of 160 °C. The electrochemical results confirm that this unique 3D architecture has improved electrochemical performance. A unique 3D mesoporous interconnected Ni 12 P 5 /CNTs hybrid was constructed by a facile one-step hydrothermal method and investigated as anode toward lithium-ion batteries. The results show that Ni 12 P 5 nanoparticles are well hinged by the flexible CNTs, forming a hierarchically integrated structure. The system delivers an initial discharge capacity of 1108 mAh g −1 and a high reversible discharge capacity of 676 mAh g −1 after 120 cycles at 200 mA g −1 . Furthermore, the hybrid also achieved long-term cycling stability and good rate capability, such as 584 mAh g −1 at a current density of 400 mA g −1 after 240 cycles and 245 mAh g −1 at a rate current density of 3200 mA g −1 . The enhanced electrochemical performance could be attributed to the synergistic effect of increased specific surface area, mesoporous structures, and 3D interconnected conductive network
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 37
·e202202462
·
IF 2.307
Minmin Wang,Li Zhou,Mengke Zhang,Wenwu Song,Weiting Zhong,Xunyue Wang,Yanfeng Tang
Graphical A facile one-step phosphorization method to fabricate a 1D Ni 12 P 5 nanoneedle array was reported. The obtained Ni 12 P 5 requires overpotentials of 59, 117, and 148 mV to reach the current density of 10, 50 and 100 mA cm −2 toward HER in 1 mol/L KOH solution, respectively. Excellent electrochemical performances demonstrate that the nickel phosphide could be a candidate for high-performance water electrolysis over a wide pH range. Transition metal phosphides (TMP) with high conductivity and better H* intermediate adsorption energy have attracted great attention in hydrogen evolution process. Herein, a Ni 12 P 5 nanoneedle array was synthesized by a facile one-step phosphorization method. As expected, the obtained Ni 12 P 5 nanoneedle arrays exhibits high HER performance, and low overpotentials of 59, 117, and 148 mV are need to drive hydrogen evolution at current densities of 10, 50, and 100 mA cm −2 in 1 mol/L KOH electrolyte, respectively. Meanwhile, the obtained electrode exhibits excellent hydrogen evolution activity in both acidic and neutral media. Excellent electrochemical performances demonstrate that the nickel phosphide could be a candidate for high-performance water electrolysis over a wide pH range.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
·
IF 3.99
Yan Zhang,Yang Tan,Xiuxiu Wang,Liang Dong,Aihua Liu
Nickel oxide and nickel phosphide supported by nitrogen-doped multi-walled carbon nanotubes (NiO-Ni 12 P 5 /NCNTs) nanocomposites were reported as non-noble metal hybrid electrocatalysts for hydrogen evolution reaction (HER). First, an amorphous nickel phosphorous coating was facilely formed on the surface of pristine CNTs (aNi-P/CNTs) through a simplified electroless deposition without the pretreatment steps of purification, sensitization and activation. Then, aNi-P/CNTs were heated with melamine at 600 °C for 1 h under an Ar atmosphere to prepare NiO-Ni 12 P 5 /NCNTs. The as-fabricated NiO-Ni 12 P 5 /NCNTs electrocatalysts showed high HER electrocatalytic activity of -0.17 V at 10 mA cm −2 , a Tafel slope of 75 mV dec -1 and a high exchange current density of 0.049 mA cm -2 . Moreover, the NiO-Ni 12 P 5 /NCNTs electrocatalysts showed a much higher durability than Pt/C after the accelerated durability tests in 0.1 M KOH. The NiO-Ni 12 P 5 /NCNTs electrocatalysts displayed good activity and stability for HER, which may originate from the synergistic effect between the Ni compound and NCNTs.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
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2022
·
IF 9.794
Ze Wang,Pei Shi,Qin Liu,Jingying Li,Yi Gan,Jia Yao,Jinghong Xia,Xin Liu,Xin Chen,Ke Qian,Xiang Liu,Lin Lv,Guokun Ma,Li Tao,Jun Zhang,Hanbin Wang,Houzhao Wan,Hao Wang
Alkaline nickel-zinc batteries have attracted more attention due to their inherent safety and high specific energy. However, the cycling stability of Ni–Zn batteries is still an urgent problem. Herein, we fabricate the Ni 12 P 5 @PANI core-shell structure by polyaniline cladding on the Ni 12 P 5 nanowires . The polyaniline not only effectively improves the specific capacity of Ni 12 P 5 , but also greatly enhances the cyclic stability. The optimized Ni 12 P 5 @PANI nanowires provide a specific capacity of 272.8 mAh g −1 at 1 A g −1 (189.2 mAh g −1 at 10 A g −1 , 69.4% retention rate) and long-life cycling (93% capacity retention after 1000 cycles at 10 A g −1 ). Moreover, the theoretical calculations indicate that the polyaniline is easy to polymerize on the surface of Ni 12 P 5 , and the lower formation energy verifies that the polyaniline shell layer can effectively promote the structural stability of Ni 12 P 5 , thus enhancing the cycle life. In addition, the assembled Ni 12 P 5 @PANI//Zn battery retains 112.3% capacity retention after 500 cycles at 3 A g −1 , and provides a high energy density of 287.9 Wh kg −1 and power density of 49.1 kW kg −1 (based on the mass of active substance). This work provides a feasible high-rate and durable cathode material for alkaline Ni–Zn batteries.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Xiujuan Xu,Puyu Du,Tong Guo,Bolin Zhao,Huanlei Wang,Minghua Huang
It is still a big challenge to develop active, stable, and easy-to-make bifunctional non-noble electrocatalysts for upshifting overall urea-assisted water splitting toward practical environmental applications at large current densities with lower cell voltages. In response, here we report a competitive bifunctional electrocatalyst that can catalyze both the urea oxidation reaction (UOR) and hydrogen evolution reaction (HER) by fabricating the in situ grown Ni phosphate (shell)-anchored Ni12P5 nanorod (core) arrays on the 3D Ni foam skeleton (named as Ni12P5/Ni-Pi/NF). Benefiting from the unique hierarchical core–shell nanorod architecture with abundant exposed active sites and improved electron and mass transfer efficiency, such elaborate binder-free arrays could act as a robust 3D UOR anode and can achieve 900 mA cm–2 only at potentials of 1.378 V in 1.0 M KOH with 0.5 M urea. Additionally, this electrode also shows remarkable cathodic HER catalytic activities. Moreover, when constructing an alkaline electrolyzer using the bifunctional electrodes, the integrated system is capable of delivering the current density of 500 mA cm–2 stably for over 6 h at a cell voltage as low as 1.662 V, which is 287 mV less than that for pure water splitting. As such, our result may become a significant step in developing an industrial electrolyzer for meaningful massive electrocatalytic hydrogen (H2) production by urea-assisted water splitting.
研究领域:
材料科学
·
电化学
·
能源转换与存储
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）