标题：Green production of nickel powder by electroreduction of NiO in molten Na2CO3-K2CO3作者：Tang, Diyong; Yin, Huayi; Cheng, Xinhua; Xiao, Wei; Wang, Dihua

来源出版物：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 卷：41 期：41 页码：18699-18705 DOI：10.1016/j.ijhydene.2016.06.078 出版年：NOV 2 2016

会议名称：3rd International Workshop on Molten Carbonates and Related Topics (IWMC)

会议时间：JUN 11-13, 2015

会议地点：NE Univ, Shenyang, PEOPLES R CHINA

摘要：Nickel powder was directly prepared in a molten Na2CO3-K2CO3 electrolytic cell at 750 degrees C. In the molten bath, porous NiO pellets were acted as the cathode and Ni10Cu11Fe alloy was applied for oxygen gas evolution anode. The electrochemical reduction of NiO was determined to follow a one-step reduction mechanism by cyclic voltammetry measurements and potentiostatic electrolysis combined with XRD analysis and EDX tests. Furthermore, two-electrode constant voltage electrolysis under different cell voltage was conducted to optimize the energy efficiency and product quality. A relatively low energy consumption of 1.05 kWh for production 1 kg nickel powder was achieved under 1.1 V with a current efficiency of 95.4%. The present work demonstrates a "green" and energy efficient nickel production way and further evidences that molten carbonate electrolysis (MCE) can be an environmental sound technology for metal production.

入藏号：WOS:000385598300039

文献类型：Article

语种：English

作者关键词：Molten carbonate electrolysis, Nickel, Solid-state reduction, Cyclic voltammetry, Electro-reduction, Inert anode

扩展关键词：FFC CAMBRIDGE PROCESS; DIRECT ELECTROLYTIC PREPARATION; HYDROGEN STORAGE ALLOY; INTERMETALLIC COMPOUND; INERT ANODE; ELECTROCHEMICAL PREPARATION; CALCIOTHERMIC REDUCTION; SOLID OXIDES; IRON; CACL2

通讯作者地址：Wang, DH (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

电子邮件地址：wangdh@whu.edu.cn

地址：[Tang, Diyong; Yin, Huayi; Cheng, Xinhua; Xiao, Wei; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

研究方向：Chemistry; Electrochemistry; Energy & Fuels

ISSN：0360-3199

eISSN: 1879-3487

影响因子：3.205