Browsing by Author "Liu, Junfeng"

Now showing items 1-11 of 11

    • Chromium phosphide CrP as highly active and stable electrocatalysts for oxygen electroreduction in alkaline media 

      Liu, Junfeng; Yu, Xiaoting; Du, Ruifeng; Zhang, Chaoqi; Zhang, Ting; Llorca Piqué, Jordi (2019-11-05)
      Article
      Open Access
      Catalysts for oxygen reduction reaction (ORR) are key components in emerging energy technologies such as fuel cells and metal-air batteries. Developing low-cost, high performance and stable electrocatalysts is critical for ...

    • Colloidal Ni-Co-Sn nanoparticles as efficient electrocatalysts for the methanol oxidation reaction 

      Li, Junshan; Luo, Zhishan; He, Feng; Zuo, Yong; Zang, Chaoqui; Liu, Junfeng; Yu, Xiaoting; Du, Ruifeng; Zhang, Ting; Infante Carrió, Maria F.; Tang, Pengyi; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot Codina, Andreu (Royal Society of Chemistry (RSC), 2018-01-01)
      Article
      Open Access
      The deployment of direct methanol fuel cells requires engineering cost-effective and durable electrocatalysts for the methanol oxidation reaction (MOR). As an alternative to noble metals, Ni-based alloys have shown excellent ...

    • Colloidal Ni2-: XCoxP nanocrystals for the hydrogen evolution reaction 

      Liu, Junfeng; Wang, Zhenxing; David, Jeremy; Llorca Piqué, Jordi (Royal Society of Chemistry (RSC), 2018-05-11)
      Article
      Open Access
      A cost-effective and scalable approach was developed to produce monodisperse Ni2-xCoxP nanocrystals (NCs) with composition tuned over the entire range (0 = x = 2). Ni2-xCoxP NCs were synthesized using low-cost, stable and ...

    • Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide 

      Li, Mengyao; Liu, Yu; Zhang, Yu; Han, Xu; Zhang, Ting; Zuo, Yong; Xie, Chenyang; Arbiol, Jordi; Llorca Piqué, Jordi; Liu, Junfeng; Cabot, Andreu (American Chemical Society, 2021-03-01)
      Article
      Open Access
      Cu2–xS has become one of the most promising thermoelectric materials for application in the middle-high temperature range. Its advantages include the abundance, low cost, and safety of its elements and a high performance ...

    • Graphene-supported palladium phosphide PdP2 nanocrystals for ethanol electrooxidation 

      Liu, Junfeng; Luo, Zhishan; Junshan, Li; Yu, Xiaoting; Llorca Piqué, Jordi; Nasiou, Déspina; Arbiol, Jordi; Meyns, Michaela; Cabot, Andreu (2019-03-01)
      Article
      Open Access
      We present a procedure to produce single-phase PdP2 nanocrystals (NCs). The approach involves the reaction of palladium(II) acetylacetonate and hexamethylphosphoroustriamide to nucleate defective Pd5P2 nanoparticles that ...

    • NiSn bimetallic nanoparticles as stable electrocatalysts for methanol oxidation reaction 

      Li, Junshan; Luo, Zhishan; Zuo, Yong; Liu, Junfeng; Zhang, Ting; Tang, Pengyi; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot Codina, Andreu (2018-10-15)
      Article
      Open Access
      Nickel is an excellent alternative catalyst to high cost Pt and Pt-group metals as anode material in direct methanol fuel cells. However, nickel presents a relatively low stability under operation conditions, even in ...

    • Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation 

      Yu, Xiaoting; Liu, Junfeng; Li, Junshan; Luo, Zhishan; Zuo, Yong; Xing, Congcong; Llorca Piqué, Jordi; Nasiou, Despina; Arbiol, Jordi; Cabot, Andreu (2020-11-01)
      Article
      Open Access
      Direct ethanol fuel cells (DEFCs) show a huge potential to power future electric vehicles and portable electronics, but their deployment is currently limited by the unavailability of proper electrocatalysis for the ethanol ...

    • Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution 

      Xing, Congcong; Liu, Yongpeng; Zhang, Yu; Liu, Junfeng; Zhang, Ting; Soler Turu, Lluís; Llorca Piqué, Jordi (Royal Society of Chemistry (RSC), 2019-01-01)
      Article
      Open Access
      We present a strategy to produce porous NiTiO3/TiO2 nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO2 needle bundles were synthesized by a hydrothermal ...

    • SnP nanocrystals as anode materials for Na-ion batteries 

      Liu, Junfeng; Wang, Shutao; Kravchyk, Kostiantyn; Llorca Piqué, Jordi (Royal Society of Chemistry (RSC), 2018-05-14)
      Article
      Open Access
      Tin monophosphide is a layered material consisting of Sn–P–P–Sn sandwiches that are stacked on top of each other to form a three dimensional crystallographic structure. Its composition and crystal structure makes it an ...

    • Stability of Pd3Pb nanocubes during electrocatalytic ethanol oxidation 

      Yu, Xiaoting; Luo, Zhishan; Zhang, Ting; Tang, Pengyi; Li, Junshan; Wang, Xiang; Llorca Piqué, Jordi; Arbiol, Jordi; Liu, Junfeng; Cabot, Andreu (American Chemical Society (ACS), 2020-02-07)
      Article
      Open Access
      Intermetallic Pd3Pb nanocrystals with controlled size and cubic geometry exposing (100) facets are synthesized and tested as electrocatalysts for ethanol oxidation in alkaline media. We observe the ethanol oxidation activity ...

    • Superior methanol electrooxidation performance of (110)-faceted nickel polyhedral nanocrystals 

      Li, Junshan; Zuo, Yong; Liu, Junfeng; Du, Ruifeng; Infante Carrió, Maria F.; Tang, Pengyi; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot Codina, Andreu (Royal Society of Chemistry (RSC), 2019-10-14)
      Article
      Open Access
      We present the synthesis of (110)-faceted nickel polyhedral nanocrystals (NCs) and their characterization as electrocatalysts for the methanol oxidation reaction (MOR). Ni NCs were produced at 180 °C through the reduction ...