水热法制备镍负载硫磷双掺杂石墨烯电极及其电催化析氢性能研究  

Study on the preparation of Ni/SPG electrode by hydrothermal method and its electrocatalytic hydrogen evolution performance

作　　者：朱桂生[1] 章明美[2] 邵守言[1] 黄春霞 黄诚[1] 刘洪 Zhu Guisheng;Zhang Mingmei;Shao Shouyan;Huang Chunxia;Huang Cheng;Liu Hong(Jiangsu SOPO(Group)Co.,Zhenjiang 212006;School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013)

机构地区：[1]江苏索普(集团)有限公司,镇江212006 [2]江苏大学化学化工学院,镇江212013

出　　处：《化工新型材料》2022年第1期89-93,共5页New Chemical Materials

基　　金：中国博士后基金资助(2017M621656);江苏省博士后基金资助(1701170C);镇江市前瞻性重点研发计划项目资助(GY2019011)。

摘　　要：设计一种高活性、高稳定性的非贵金属基催化剂,对电催化析氢的应用具有重要意义。以硫酸和植酸为硫磷掺杂剂,采用水热法合成了硫磷共掺杂石墨烯(SPG);随后,采用简单的醇热法制备了直接生长在SPG上的Ni基纳米材料(Ni/SPG)。制备的Ni/SPG电催化剂表现出杰出的析氢性能,其阻抗极低(0.48Ω),电化学活性表面积极好(32.62m^(2)/g),起始过电位低(115mV),并且具有优秀的Tafel斜率(115mV/dec)和良好的循环稳定性(5000个循环伏安循环)。这些显著的电催化性能归因于S和P双掺杂石墨烯产生更多暴露的活性中心和表面缺陷,使得小晶粒尺寸的Ni均匀地分散在其表面,并促进了它们之间的电子传输。It is of great significance to design a non-noble metal based catalyst with high activity and stability for the application of electrocatalytic hydrogen evolution.Sulfur phosphorus co-doped graphene(SPG) was successfully synthesized via a simple hydrothermal method using sulfuric acid and phytic acid as dopants.Subsequently,the nickel based nanomaterials grown directly on SPG(named Ni/SPG) were prepared by a simple alcohol thermal method.The prepared Ni/SPG electrocatalyst demonstrated excellent hydrogen evolution performance,such as very low impedance(0.48Ω),active electrochemical surface(32.62 m^(2)/g),low initial overpotential(115 mV),excellent Tafel slope(115 mV/dec) and good cycle stability,and so on.These remarkable electrocatalytic properties were attributed to the more exposed active centers and surface defects of S and P co-doped graphene,which made the Ni with small size evenly dispersed on its surface and promoted the electronic transmission between them.

关 键 词：硫磷双掺杂石墨烯 镍 析氢反应 电催化 

分 类 号：TQ116.2[化学工程—无机化工]