【作者】 王静； 毛善俊； 王勇； Ze Yan Liu； Zhong Zhe Wei； Hai Yan Wang； Yi Qing Chen；

【Author】 Jing Wang;Shan Jun Mao;Ze Yan Liu;Zhong Zhe Wei;Hai Yan Wang;Yi Qing Chen;Yong Wang;Advanced Materials and Catalysis Group,Center for Chemistry of High-performance and Novel Materials,Department of Chemistry,Zhejiang University;

【机构】 浙江大学化学系浙江大学-新和成联合研发中心；

【摘要】 随着环境和能源问题的日益严峻,新能源的研发成为了当下的研究热点。氢气由于其高的热值,产物无污染等优点而成为一种理想的能源载体。通常情况下商业上用于制备氢气的催化剂是以Pt等贵金属为主的,但由于其储备有限,成本高而极大地限制了商业化的应用。我们在此报道了一种镍基催化剂,这种催化剂的制备过程简单,原料成本低,来源广泛,且其HER催化性能优良,稳定性好。同时我们也研究了催化过程中金属价态的变化,发现在电催化过程中原位还原的金属镍对于HER活性的提高起着推动作用。更多还原

【Abstract】 The growing energy and environmental crises have promoted the exploration of renewable alternative energies. As a clean, efficient and renewable energy, H₂ is regarded as an ideal energy carrier. HER in electrocatalytic water splitting is one of the most effective ways to produce high-purity H₂. Herein, we designed a convenient protocol for the fabrication of NiO_x@bamboo-like carbon nanotubes hybrids（NiO_x@BCNTs） through calcining melamine / Ni（NO₃）₂?6H₂O. This strategy is facile in operation and the raw materials are widely available. The prepared catalyst displayed superior HER performance in basic medium. Moreover, the in situ generated Ni⁰ from NiO during electrocatalytic process accelerated the water splitting process. These conclusions reveal the essence of the catalytic active sites, and provide guidance for the design of cost-efficient, and highly active Ni-based catalysts for the conversion and storage of renewable energy.更多还原