【摘 要】
：
The widespread commercial application of direct formate fuel cell (DFFC) is limited by the lack of efficient electrocatalysts for the formate oxidation reaction (FOR).AgPdCo hollow nanospheres (H-NSs) with jagged surfaces are successfully synthesized via
【机 构】
：
State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072
论文部分内容阅读
The widespread commercial application of direct formate fuel cell (DFFC) is limited by the lack of efficient electrocatalysts for the formate oxidation reaction (FOR).AgPdCo hollow nanospheres (H-NSs) with jagged surfaces are successfully synthesized via a facile method involving the wet-chemical synthesis of AgPdCo nanospheres (NSs) and galvanic replacement reaction between Pd salt and AgPdCo NSs.Surpassing Ag3oPd69Co1 NSs and most of previously reported electrocatalysts,Ag9Pd9oCo1 H-NSs exhibit extremely high FOR activity with a peak current density of 3.08 A·mgPd-1.Apart from the competitive activity,AggPd9oCo1 H-NSs show greatly improved chronoamperometric and cycling stability,whereby the current density retains about 0.24 A.mgpd-1 after 3,600 s electrocatalysis and the mass activity maintains 54.06％ of the initial value after 500 cycles.The unique hollow nanosphere and synergistic effect are responsible for the enhanced activity and stability.This study will provide new clues for the development of outstanding electrocatalysts.
其他文献
Photocatalysis,via conversion of light into valuable chemicals,is an economic and effective way to utilize inexhaustible solar energy for the sustainable development of our human society.Aiming at killing two birds with one stone,metal nanoparticle (MNP)/
Lung diseases,including COVID-19 and lung cancers,is a huge threat to human health.However,for the treatment and diagnosis of various lung diseases,such as pneumonia,asthma,cancer,and pulmonary tuberculosis,are becoming increasingly challenging.Currently,
The growing concern for the exhaustion of fossil energy and the rapid revolution of electronics have created a rising demand for electrical energy storage devices with high energy density,for example,lithium secondary batteries (LSBs).With high surface ar
Understanding bubbles evolution kinetics on electrodes with varied geometries is of fundamental importance for advanced electrodes design in gas evolution reaction.In this work,the evolution kinetics of electro-generated hydrogen bubbles are recorded in s
Drug-eluting stent (DES) is a promising strategy for esophageal cancer.However,full-covered drug-loaded stents cause damage to non-tumor tissue in the esophagus,and the development controlled-release system to prevent non-tumor tissue injure is currently
Dielectrophoresis (DEP) describes the motion of suspended objects when exposed to an inhomogeneous electric field.It has been successful as a method for parallel and site-selective assembling of nanotubes from a dispersion into a sophisticated device arch
An aqueous nanosuspension of agrochemicals unlike pharmaceutics has to achieve massive production in an effective way,capable to ensure sufficient profits in commercialization.This work implements the flash nanoprecipitation (FNP) technique to effectively
Enhancement of open-circuit voltage (Voc) is an effective way to improve power conversion efficiency (PCE) of the perovskite solar cells (PSCs).Theoretically,work function engineering of TiO2 electron transport layer can reduce both the loss of Voc and cu
The development of membranes featuring carbon nanotubes (CNTs) have provided possibilities of next-generation solar desalination technologies.For solar desalination,the microstructures and interactions between the filter membrane and seawater play a cruci
We demonstrate the dipole-assisted carrier transport properties of bis(trifluoromethane)sulfonamide (TFSI)-treated O-ReS2 field-effect transistors.Pristine ReS2 was compared with defect-mediated ReS2 to confirm whether the presence of defects on the inter