Journal ArticleDOI
Elucidating the sources of activity and stability of FeP electrocatalyst for hydrogen evolution reactions in acidic and alkaline media
Xin Zhao,Zheng Zhang,Xun Cao,Jun Hu,Xinghua Wu,Xinghua Wu,Andrew Yun Ru Ng,Guo-Ping Lu,Zhong Chen +8 more
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In this paper, the authors conduct comprehensive experimental and theoretical investigations on the hydrogen evolution reaction (HER) preformation of FeP electrode in acidic and alkaline solutions and show that surface treatment in 37% HCl solution removes the oxide layer and significantly improves the HER performance, especially in alkaline solution.Abstract:
In this study, we conduct comprehensive experimental and theoretical investigations on the hydrogen evolution reaction (HER) preformation of FeP electrode in acidic and alkaline solutions. Theoretically, bulk Fe-O bond is unfavorable, but surface Fe-O bond is favorable and plays a negative role for HER. The presence of oxygen bonds (native or formed during reaction) is the root source of the reduced HER activity. Surface treatment in 37% HCl solution removes the oxide layer and significantly improves the HER performance, especially in alkaline solution. After etching, the overpotentials in 0.5 M H2SO4 are 79 and 95 mV at 10 and 20 mA cm−2, respectively. The ones in 1 M KOH are 95 and 102 mV at 10 and 20 mA cm−2, respectively. Long-term instability in alkaline solution is caused by the presence of oxygen in the electrolyte. Good stability can be realized by removing oxygen from the solution.read more
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Iron-based phosphides as electrocatalysts for the hydrogen evolution reaction: recent advances and future prospects
Siran Xu,Haitao Zhao,Tingshuai Li,Jie Liang,Siyu Lu,Guang Chen,Shuyan Gao,Abdullah M. Asiri,Qi Wu,Xuping Sun +9 more
TL;DR: In this paper, the authors summarize recent publications with critical insight into the advances of iron-based phosphides as HER electrocatalysts, and they point out several challenges and prospects, which can open up opportunities to design next-generation FeP HER catalysts.
Journal ArticleDOI
Edge-oriented, high-percentage 1T′-phase MoS2 nanosheets stabilize Ti3C2 MXene for efficient electrocatalytic hydrogen evolution
TL;DR: In this paper, an efficient and stable MoS2-Ti3C2 MXene electrocatalyst was synthesized using a delicately designed one-step hydrothermal method.
Journal ArticleDOI
Ultrafast fabrication of porous transition metal foams for efficient electrocatalytic water splitting
TL;DR: In this paper, the authors report an ultrafast one-step electrodeposition method to prepare a series of transition metal foams within one minute for electrocatalytic water splitting.
Journal ArticleDOI
Constructing Atomic Heterometallic Sites in Ultrathin Nickel-Incorporated Cobalt Phosphide Nanosheets via a Boron-Assisted Strategy for Highly Efficient Water Splitting.
Yufei Zhao,Yufei Zhao,Jinqiang Zhang,Yuhan Xie,Bing Sun,Junjie Jiang,Wen-Jie Jiang,Shibo Xi,Hui Ying Yang,Kang Yan,Shijian Wang,Xin Guo,Peng Li,Zhao Jun Han,Zhao Jun Han,Xunyu Lu,Hao Liu,Guoxiu Wang +17 more
TL;DR: In this paper, an ultrathin nickel-incorporated cobalt phosphide porous nanosheets (Ni-CoP) featuring an atomic heterometallic site (NiCo16-xP6) via a boron-assisted method was fabricated.
Journal ArticleDOI
A review of the electrocatalysts on hydrogen evolution reaction with an emphasis on Fe, Co and Ni-based phosphides
TL;DR: In this article, the authors focus on the recent progress with respect to the advantages, common synthetic approaches and enhancement strategies of Fe, Co and Ni-based phosphides, with important works in each section elaborately introduced for researchers in the relevant area.
References
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Journal ArticleDOI
Sustainable Hydrogen Production
TL;DR: Identifying and building a sustainable energy system are perhaps two of the most critical issues that today's society must address.
Journal ArticleDOI
MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for the Hydrogen Evolution Reaction
TL;DR: In this article, a selective solvothermal synthesis of MoS2 nanoparticles on reduced graphene oxide (RGO) sheets suspended in solution was developed, which exhibited superior electrocatalytic activity in the hydrogen evolution reaction (HER).
Journal ArticleDOI
High Performance Bifunctional Porous Non-Noble Metal Phosphide Catalyst for Overall Water Splitting
Fang Yu,Fang Yu,Haiqing Zhou,Haiqing Zhou,Yufeng Huang,Jingying Sun,Fan Qin,Jiming Bao,William A. Goddard,Shuo Chen,Zhifeng Ren +10 more
TL;DR: A hybrid catalyst constructed by iron and dinickel phosphides on nickel foams that drives both the hydrogen and oxygen evolution reactions well in base, and thus substantially expedites overall water splitting is reported, which outperforms the integrated iridium (IV) oxide and platinum couple (1.57 V).
Journal ArticleDOI
Highly crystalline Ni-doped FeP/carbon hollow nanorods as all-pH efficient and durable hydrogen evolving electrocatalysts
TL;DR: These hollow nanorods are prepared based on the etching and coordination reaction between metal-organic frameworks and phytic acid, followed by a pyrolysis process and provide a general and friendly strategy to construct hollow phosphides for energy-related applications.
Journal ArticleDOI
Large-Scale Synthesis of Carbon-Shell-Coated FeP Nanoparticles for Robust Hydrogen Evolution Reaction Electrocatalyst
Dong Young Chung,Samuel Woojoo Jun,Gabin Yoon,Hyun-Joong Kim,Ji Mun Yoo,Kug-Seung Lee,Taehyun Kim,Heejong Shin,Arun Kumar Sinha,Soon Gu Kwon,Kisuk Kang,Taeghwan Hyeon,Yung-Eun Sung +12 more
TL;DR: Extended X-ray absorption fine structure analysis combined with electrochemical test shows that carbon shell coating prevents FeP nanoparticles from oxidation, making them highly stable under hydrogen evolution reaction operation conditions.
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