废液协同活性炭辅助水电解制氢的实验研究  

Experimental study on hydrogen production from wastewaterand activated carbon assisted water electrolysis

作　　者：刘建忠[1] 陈懿同 陈聪 周俊虎[1] LIU Jianzhong;CHEN Yitong;CHEN Cong;ZHOU Junhu(State Key Laboratory of Energy Clean Utilization,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《能源环境保护》2023年第2期39-47,共9页Energy Environmental Protection

基　　金：国家重点研发计划课题(2016YFB0600505);浙江省重点研发计划项目(2020C01135)。

摘　　要：氢气具有热值高、绿色低碳、应用广泛等优点,是我国实现双碳目标的重要战略选择。目前仍需继续探索低成本、高效率、高纯度的新型制氢技术,碳辅助水电解制氢因其能够有效降低电解电耗而受到关注。对废液协同活性炭辅助水电解制氢的电解特性进行了实验研究,主要讨论了活性炭较现有关注更多的碳源煤的电解特性优势,废液协同电解较单一碳源电解的优势等问题。利用三电极系统通过控制碳源种类、废液种类、温度以及铁催化剂4个单因素变量进行对照电解实验,各组样品的电化学性能由线性电势扫描伏安法测定,并结合实验结果进行了电化学动力学分析。实验结果表明,活性炭作为辅助碳源,表现优于锡盟褐煤和山西平朔烟煤,具有更好的应用潜力。洗气水协同活性炭电解能够进一步提升单一活性炭辅助电解的电流密度。同时,实验也表明了温度是影响辅助电解的重要因素,需要综合实际情况进行选择。电化学动力学分析进一步表明洗气水协同活性炭辅助电解阳极反应更易进行,能改善电解水阳极反应动力学迟缓的问题。Hydrogen has many advantages,such as high calorific value,low carbon,wide application,etc,which is an important strategic choice for China to achieve the dual carbon goal.It is still necessary to continue exploring new hydrogen production technologies with low cost,high efficiency and high purity.Carbon assisted water electrolysis for hydrogen production has attracted attention because it can effectively reduce electrolysis power consumption.In this paper,the electrolysis characteristics of hydrogen production by wastewater synergetic activated carbon assisted water electrolysis were experimentally studied,mainly discussing the advantages of the electrolysis characteristics of activated carbon compared with the existing carbon source coal,and the advantages of wastewater synergetic electrolysis.In this study,the control electrolysis experiment was carried out by controlling the single factor variables of carbon source type,wastewater type,temperature and iron catalyst.The electrochemical performance of each group of samples was determined by LSV,and the electrochemical kinetics was analyzed in combination with the experimental results.The experimental results showed that as an assisted carbon source,activated carbon was superior to Ximeng lignite and Shanxi Pingshuo bituminous coal.The current density of single activated carbon assisted electrolysis can be further improved by the cooperation of wastewater and activated carbon electrolysis.At the same time,the experiment also showed that temperature was an important factor affecting the auxiliary electrolysis,which need to be selected according to the actual situation.The electrochemical kinetics analysis further showed that the anodic reaction of electrolysis assisted by wastewater and activated carbon was easier to carry out,which could solve the problem of slow anodic reaction kinetics of electrolysis water.

关 键 词：碳辅助水电解 制氢 活性炭 工业废水 废液利用 

分 类 号：X703[环境科学与工程—环境工程]