Anodic Oxidation of Alkali Borohydrides Catalyzed by Nickel
作者:Bin Hong Liu、Zhou Peng Li、Seijirau Suda
DOI:10.1149/1.1553785
日期:——
Borohydrides in alkaline media are potential fuels for fuel cells due to their high energy and power density. In this work, we studied the anodicoxidation of borohydrides on a nickel electrode. The open-circuit potential was found to be about 0.15-0.2 V more negative than the hydrogen potential, depending on the concentration of BH - 4 . The results of polarization measurements indicated that a high
PVP-stabilized Ru–Rh nanoparticles as highly efficient catalysts for hydrogen generation from hydrolysis of ammonia borane
作者:Murat Rakap
DOI:10.1016/j.jallcom.2015.07.249
日期:2015.11
They are durable and highlyefficientcatalysts for hydrogengenerationfrom the hydrolysis of ammonia borane even at very low concentrations and temperature, providing average turnover frequency of 386 mol H 2 (mol cat) −1 min −1 and maximum hydrogengeneration rate of 10,680 L H 2 min −1 (mol cat) −1 . Poly( N -vinyl-2-pyrrolidone)-protected ruthenium–rhodium nanoparticles also provide activation
摘要 本文报道了利用聚(N-乙烯基-2-吡咯烷酮)保护的钌-铑纳米颗粒(3.4±1.4 nm)作为高效催化剂在氨硼烷水解制氢中的应用。它们是通过醇还原法在乙醇/水混合物中共还原钌和铑金属离子制备的,并通过透射电子显微镜-能量色散 X 射线光谱、紫外-可见光谱和 X 射线光电子能谱表征。它们是耐用且高效的催化剂,即使在非常低的浓度和温度下,氨硼烷水解也能产生氢气,提供 386 mol H 2 (mol cat) -1 min -1 的平均周转频率和 10,680 LH 的最大氢气产生速率2 min -1 (mol cat) -1 。
A Fuel Cell Development for Using Borohydrides as the Fuel
作者:Z. P. Li、B. H. Liu、K. Arai、S. Suda
DOI:10.1149/1.1576767
日期:——
A fuelcell was developed usingborohydride solutions as the fuel. The cell consisted of an anode made of a Zr-Ni alloy, a cathode made of Pt/C, and a Na + form Nafion membrane as the electrolyte. The borohydride-fueled cell showed an open-circuit voltage of 1.3 V, compared with 1.0 V for a hydrogen gas-fueled one. The anode exhibited a small polarization property compared with the cathode. The cathode
Carbon-supported Au modified N-doped carbon-coated FeMn alloy nanoparticle composites for BH<sub>4</sub><sup>−</sup> electrocatalytic oxidation
作者:Lanhua Yi、Shaobo Yang、Junjie Fei、Yonglan Ding、Xianyou Wang、Yebo Lu
DOI:10.1039/d0nj01974g
日期:——
Carbon-supported Au modified N-doped carbon-coated FeMn alloy nanoparticle composites (Au/FeMn@CN/C) are prepared and used as electrocatalysts for BH4− electrooxidation.
rational design and engineering of high-performance and stable electrocatalysts for the borohydride oxidationreaction (BOR) is imperative for the development of direct borohydride fuel cells. In this work, we report a one-pot strategy for the self-assembly of Ni-doped hyperbranched PdCunanocrystals (Ni–PdCu NCs) using polyethylene oxide as the structure-directing agent in the presence of bromide ions
用于硼氢化物氧化反应 (BOR) 的高性能和稳定电催化剂的合理设计和工程化对于直接硼氢化物燃料电池的发展势在必行。在这项工作中,我们报告了一种在溴离子存在下使用聚环氧乙烷作为结构导向剂自组装 Ni 掺杂超支化 PdCu 纳米晶体(Ni-PdCu NCs)的一锅法策略。受益于支化纳米结构、高活性位点和三金属成分,制备的 Ni-PdCu NCs 在含有 50 mM NaBH 4的 1.0 M KOH 中的 BOR 表现出优于 PdCu NCs 和 Pd/C 的电催化性能,以及更好的由于对 BH x具有更高的抵抗力而具有耐用性中间体。目前的工作为设计用于直接硼氢化物燃料电池的具有超支化结构的多金属电催化剂提供了一条简便的途径。