不同碳源催化化学气相沉积制备自支撑C/Ni-Fiber复合电极材料的电容脱盐性能

引用本文: 王喜文, 姜芳婷, 索全伶, 方玉珠, 路勇. 不同碳源催化化学气相沉积制备自支撑C/Ni-Fiber复合电极材料的电容脱盐性能[J]. 物理化学学报, 2011, 27(11): 2605-2612. doi: 10.3866/PKU.WHXB20111116 shu

Citation: WANG Xi-Wen, JIANG Fang-Ting, SUO Quan-Ling, FANG Yu-Zhu, LU Yong. Self-supporting Macroscopic Carbon/Ni-Fiber Hybrid Electrodes Prepared by Catalytic Chemical Vapor Deposition Using Various Carbonaceous Compounds and Their Capacitive Deionization Performance[J]. Acta Physico-Chimica Sinica, 2011, 27(11): 2605-2612. doi: 10.3866/PKU.WHXB20111116 shu

不同碳源催化化学气相沉积制备自支撑C/Ni-Fiber复合电极材料的电容脱盐性能

基金项目:
国家自然科学基金(20973063, 21076083) (20973063, 21076083)

上海市科委&ldquo

科技启明星(跟踪)计划&rdquo (跟踪)

(10HQ1400800)资助项目 (10HQ1400800)

摘要: 以甲烷、乙烯、乙醇和正丁醇为碳源, 通过催化化学气相沉积在具有三维开放网络结构的烧结8 μm-Ni金属纤维上沉积碳的方法, 制备了以金属Ni 纤维网络为集流极、沉积碳为离子存储库的薄层大面积自支撑C/Ni-fiber 复合电极材料. 用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、热重分析(TGA)、X射线衍射(XRD)、N₂-吸脱附等温线和循环伏安与电化学阻抗谱对电极材料进行了表征, 并考察了其作为电极的电容脱盐性能.乙烯、甲烷、正丁醇和乙醇为碳源的沉积碳形态分别为鱼骨状碳纳米管(CNTs)、石墨烯面取向与轴平行的CNTs、棒状和蠕虫状碳纳米纤维(CNFs). C/Ni-fiber 复合电极材料对NaCl的电吸附容量顺序为: 乙烯>正丁醇>甲烷>乙醇, 这与复合电极的电化学特性、孔结构和碳的纳米结构相关. 在1.2 V的工作电压下, 以乙烯为碳源制备的C/Ni-fiber 复合电极材料对水溶液中NaCl (100 mg·L^-1)的电吸附容量达159 μmol·g^-1.

关键词:

English

Self-supporting Macroscopic Carbon/Ni-Fiber Hybrid Electrodes Prepared by Catalytic Chemical Vapor Deposition Using Various Carbonaceous Compounds and Their Capacitive Deionization Performance

1.
1. Department of Chemical Engineering, Inner Mon lia University of Technology, Hohhot 010051, P. R. China;
2. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, P. R. China
Received Date: 25 May 2011
Available Online: 27 October 2011
Fund Project:
国家自然科学基金(20973063, 21076083)

上海市科委&ldquo

科技启明星(跟踪)计划&rdquo

(10HQ1400800)资助项目

Abstract: We prepared a series of self-supported macroscopic C/Ni-fiber hybrid electrodes by catalytic chemical vapor deposition (CCVD) using methane, ethylene, ethanol and n-butanol as carbon sources to embed carbon onto a three-dimensional network of sinter-locked conductive 8 μm-nickel fibers. For the as-prepared hybrid electrodes, the Ni-microfibrous network serves as a current collector and the carbons as ion storage media while the macroporous void space serves as an electrolyte reservoir. We characterized the hybrid electrodes using scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), N₂ isothermal adsorptiondesorption, cyclic voltammetry and electrochemical impedance spectroscopy. The desalination performance of the C/Ni-fiber hybrids was evaluated as electrodes in a capacitive deionization system. The carbon morphology is dependent on the carbonaceous compounds used in CCVD: carbon nanotubes (CNTs) with fishbone-like structure, CNTs with inclined graphene layers parallel to the tube axis, rod-like carbon nanofibers (CNFs) and worm-like CNFs for ethylene, methane, n-butanol and ethanol. The desalination performance of these hybrid electrodes with respect to the carbonaceous compounds decreases as follows: ethylene>n-butanol>methane>ethanol, which correlates with their electrochemical features, pore structures and their carbon nanostructures. The hybrid electrodes obtained using ethylene as the carbon source gave a maximum electrosorption capacity of 159 μmol·g^-1 using a direct current voltage of 1.2 V and a 100 mg·L^-1 NaCl aqueous solution as raw water.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

不同碳源催化化学气相沉积制备自支撑C/Ni-Fiber复合电极材料的电容脱盐性能

English

Self-supporting Macroscopic Carbon/Ni-Fiber Hybrid Electrodes Prepared by Catalytic Chemical Vapor Deposition Using Various Carbonaceous Compounds and Their Capacitive Deionization Performance

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

不同碳源催化化学气相沉积制备自支撑C/Ni-Fiber复合电极材料的电容脱盐性能

English

Self-supporting Macroscopic Carbon/Ni-Fiber Hybrid Electrodes Prepared by Catalytic Chemical Vapor Deposition Using Various Carbonaceous Compounds and Their Capacitive Deionization Performance

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs