Article
Chemistry, Physical
Mingyue Cui, Zuoyu Yan, Miaorong Zhang, Shaopei Jia, Yan Zhang
Summary: Nickel phosphides are seen as effective electrocatalysts for HER, but their weak electrical conductivity limits their performance. By combining nickel phosphides with conductive materials like carbon nanotubes, the Ni-Ni12P5/CNTs catalyst showed improved HER performance with good stability in KOH solution. This study provides a new method for designing transition metal composites to enhance electrocatalytic activity for HER.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Qi Cao, Shuang Hao, Yunwen Wu, Ke Pei, Wenbin You, Renchao Che
Summary: The binder-free Ni2P-Co2P/CC electrocatalyst exhibits outstanding HER activity in alkaline and acidic conditions, attributed to abundant interfacial contact, regulated electronic structure, hydrophilic surface, and interfacial charge redistribution contributing more high-valence Ni active sites. This work demonstrates the potential of facile strategy for the design and preparation of highly efficient phosphide electrocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Gaoyang Liu, Faguo Hou, Xindong Wang, Baizeng Fang
Summary: Recently, amorphous nickel phosphides (Ni-P) have been identified as potential catalysts for hydrogen evolution reactions (HER) due to their high intrinsic activity and excellent electrochemical stability. However, there is a lack of effective strategies for preparing amorphous Ni-P with surface defects or structural boundaries, as well as constructing porous Ni-P layers with favorable electron and gas-liquid transport properties. In this study, an integrated porous electrode consisting of amorphous Ni-P and a Ni interlayer was successfully fabricated on a 316L stainless steel felt (Ni-P/Ni-316L). The pH of the plating solution significantly influenced the properties of the amorphous Ni-P layer, including grain size, pore size, distribution, and surface roughness. The Ni-P/Ni-316L prepared at pH = 3 exhibited the richest surface defects or structural boundaries as well as a porous structure. The Ni-P/Ni-316L demonstrated superior kinetics, with a low overpotential (eta(10) = 73 mV) and a small Tafel slope (ca. 52 mV dec-1) for the HER compared to other electrocatalysts synthesized at different pH values. Moreover, the Ni-P/Ni-316L showed comparable electrocatalytic performance and better durability than commercial Pt (20 wt%)/C in a real water electrolysis cell, indicating its promising potential for large-scale processing and practical use.
Article
Chemistry, Physical
Pingping Zhang, Zunhang Lv, Xuguang Liu, Guangwen Xie, Baoquan Zhang
Summary: A cost-effective metallic nickel activation process is proposed for porous alumina ceramic, leading to excellent electrocatalytic oxygen evolution performance. This is attributed to its amorphous structure and the presence of oxides and hydroxides on its surface, providing catalytic active sites for oxygen evolution reaction. Thus, the simple metallic nickel activation process shows promise for electroless nickel plating on porous alumina ceramic.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Yiran Zhang, Chengyu Fu, Jinli Fan, Haiyang Lv, Weiju Hao
Summary: The study presents a stable catalytic electrode design for efficient and stable hydrogen production in alkaline simulated seawater. By modifying active material NiB on Ti plate through electroless plating, a bifunctional Ti@NiB electrode is prepared. Experimental results demonstrate the electrode's good stability and high electrolysis efficiency.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Rongfei Wang, Xiaodeng Wang, Min Cheng, Yunpeng Wei, Jihong Xia, Hua Lin, Wei Sun, Weihua Hu
Summary: This study develops a strategy to synthesize Rh2P-based nanoparticles with controlled phosphidation degree and demonstrates their excellent performance in hydrogen evolution reaction (HER) under both alkaline and acid conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jieshu Zhou, Lihua Liu, Hangxing Ren, Liming Li, Wei Song, Ning Li, Xuxia Shi, Chendong Kou, Yuetao Sun, Mei Han, Haibin Wang, Jingrui Han, Kangning Liu, Christopher Dorma Momo Jr, Yingying Liu, Donghui Feng, Weijun Zhu, Songhua Chen, Hui Jiang, Yongchang Liu, Hongyan Liang
Summary: Developing active and robust NiFe-based catalysts as alternatives to noble metals is essential for cost-effective hydrogen generation. The proposed Mo oxidative leaching strategy promotes the self-reconstruction of NiFe-based pre-catalysts, resulting in enhanced oxygen evolution reaction kinetics. The optimized catalysts exhibit long-term stability in simulated seawater.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Sergio Battiato, Mario Urso, Salvatore Cosentino, Anna Lucia Pellegrino, Salvo Mirabella, Antonio Terrasi
Summary: This study reports on the synthesis of Ni-P alloys as efficient catalysts for water electrolysis, demonstrating improved catalytic activity by adjusting the thickness and Ni/P ratio of the alloy. Depositing Ni-P catalysts with optimized size and composition on Ni foam resulted in increased active sites for the oxygen evolution reaction, achieving high current densities at low overpotentials. Additionally, the study advances the control of electroless synthetic approaches for designing high-performance metal phosphide catalysts on a large scale for electrochemical water splitting.
Article
Chemistry, Physical
Zunhang Lv, Kaihang Wang, Yingying Si, Zihan Li, Tianpeng Yu, Xin Liu, Guixue Wang, Guangwen Xie, Luhua Jiang
Summary: By judiciously engineering the electrocatalysts, the researchers successfully designed a Co-P/Ni-Fe-P/NF electrode with excellent electrocatalytic activity for hydrogen evolution reaction in alkaline medium. The electrode exhibited a low overpotential of 43.4 mV at 10 mA cm-2 and demonstrated long-term stability for 72 hours. This innovative work may contribute to further development of commercial electrocatalysts.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Physical
Yan Zhang, Zuoyu Yan, Miaorong Zhang, Yang Tan, Shaopei Jia, Aihua Liu
Summary: Cu2O nanoparticles supported on pristine carbon nanotubes were synthesized by a green electroless plating method using glucose as the reducing agent. The Cu2O/CNTs nanocomposite materials exhibited remarkable electrocatalytic activity towards hydrogen evolution reaction in alkaline solution, making them efficient HER electrocatalysts for water splitting.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Dong Xiang, Biao Zhang, Hongsheng Zhang, Liangping Shen
Summary: The Ni2P nanowires were synthesized using a one-step hydrothermal approach, with uniform nanowires exhibiting enhanced electrocatalytic activity for hydrogen and oxygen evolution reactions. This work provides guidance for designing nickel phosphides with unique nanostructures for efficient water splitting.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Vikas Pundir, Ashish Gaur, Rajdeep Kaur, Jatin Sharma, Rajinder Kumar, Vivek Bagchi
Summary: A nano-sheet catalyst with high efficiency in water splitting was developed through the design and construction of multi-heterointerfaces, demonstrating high current density and stability in hydrogen and oxygen evolution reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yongjae Jeung, Hyeonjung Jung, Dokyoung Kim, Hyogyun Roh, Chaeeun Lim, Jeong Woo Han, Kijung Yong
Summary: 2-D Ni alloy phosphide catalysts are being studied for alkaline overall water splitting reactions due to their strong bond strength and active sites. V-doping of these catalysts improved their electrical conductivity and catalytic activity, reducing Tafel slopes and overpotentials for both hydrogen evolution and oxygen evolution reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Engineering, Environmental
Lutfi K. Putri, Boon-Junn Ng, Ryan Yow Zhong Yeo, Wee-Jun Ong, Abdul R. Mohamed, Siang-Piao Chai
Summary: Hydrogen fuel is considered a clean energy alternative to fossil fuels, and water electrolysis is seen as a key technology for achieving a hydrogen economy. Nickel phosphides (NixPy), among transition metal-based compounds, have emerged as low-cost and catalytically active electrocatalysts for the hydrogen evolution reaction (HER). This review provides an overview of various doping approaches and explores the effects of doping on NixPy, aiming to guide the rational design of NixPy for efficient HER catalysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Seunghyun Jo, Byeol Kang, Hyunjun Oh, JunHwa Kwon, Pilsoo Choi, Ki-Yeop Cho, Joo-Hyoung Lee, KwangSup Eom
Summary: Ni-P is a promising catalytic material for the hydrogen evolution reaction (HER) due to its high catalytic activity, highly competitive cost, and practical usefulness. To achieve the best catalytic performance, it is necessary to control the P ratio in Ni-P, as the catalytic kinetics of Ni-P depend on the number of reaction sites of the positively and negatively charged Ni and negatively charged P. A facile surface-treatment based on dealloying was introduced to control the surficial P ratio with multiple CV cycles. The 20 and 10 times cycled Ni-P/ CFPs showed improved catalytic activities and higher stabilities in acid and alkaline media.
CHEMICAL ENGINEERING JOURNAL
(2023)
