Synthesis of activated carbon nanotube/copper oxide composites and their electrochemical performance

In situ spontaneous redox synthesis of carbon nanotubes/copper oxide nanocomposites and their preliminary application in electrocatalytic reduction of nitrate

“…S1). Moreover, the presence of the peak at 934.8 eV, corresponding to the binding energy of Cu 2p3/2 along with two satellite peaks (943.8 eV and 962.3 eV), is due to the presence of CuO in the composite, which agrees well with the literature report [11]. The peak at 932.3 eV corresponding to the binding energy of Cu 2p3/2 indicates the presence of Cu 2 O phase in the nanocomposites [12].…”

A Review of Metal Oxide Composite Electrode Materials for Electrochemical Capacitors

“…Kim and co-workers have prepared CuO/CNT composites which exhibit 60 F/g in 6 M KOH. 100 However, the authors did not indicate the electrochemical results obtained by using two-electrode or three-electrode measurements. In general, speci¯c capacitance calculated from a two-electrode cell is less than half of that obtained from a three-electrode cell, as discussed in Sec.…”

Preparation and Capacitance of Copper-Doped Activated Carbon From Polyacrylonitrile (PAN) Precursor

“…马亚芬 等 [45] 利用浸渍法来对活性炭进行铜掺杂, 发现其表面 性质例如接触角、润湿性等发生了相应的变化, 接触角 的改变有利于电解液与电极的充分接触, 从而提高了最 终活性炭材料的电容值. Kim [46] 和 Takamura [47] [56] . …”

“…对其进行红外表征(图 4), 发现碳氮双键吸收峰 (1650 cm -1 )和氮氧单键振动吸收峰(998 cm -1 )强度减小, 而在 614 cm -1 处出现了铜氧单键振动吸收峰 [43] , 说明 铜离子已成功掺杂入聚丙烯腈. 时 944.5 eV 能量峰的存在说明最终活性炭中成功掺入 铜, 并以 CuO 形式存在 [46] . [57] .…”

“…对未掺杂活性碳电极 AC-T800C100 和铜掺杂活性 碳电极 Cu-AC-T800C100 进行循环伏安测试(图 10, a, b), 扫描速度范围为 5～200 mV/s, 电压范围为-0.8～-0.1 V. 未掺杂活性碳(AC-T800C100)电极循环伏安曲线呈 现出矩形形状, 表现出了理想双电层电容特征. 对于铜 掺杂活性碳(Cu-AC-T800C100)电极而言, 当扫描速度 在 5～50 mV/s 之间, 循环伏安曲线上出现了明显的准 电容峰, 即掺杂的金属铜发生了氧化还原反应 [46,60] . 这说明 Cu-AC-T800C100 电极的电容不仅有理想的 双电层电容, 还包括掺杂金属铜贡献的准电容(赝电容).…”