纳米棒
电催化剂
氧化铈
材料科学
化学工程
阴极
电流密度
纳米颗粒
交换电流密度
开路电压
纳米技术
铈
氧化物
电极
化学
电化学
电压
电气工程
物理化学
塔菲尔方程
冶金
工程类
物理
量子力学
作者
Suparna Das,Kingshuk Dutta,Apostolos Enotiadis,Farhan Papiya,Patit Paban Kundu,Swapan Kumar Bhattacharya,Emmanuel P. Giannelis
标识
DOI:10.1088/2053-1591/ab653e
摘要
Abstract This paper reports the synthesis and utilization of cerium oxide (CeO 2 ) nanorods as a cathode catalyst and a potential, low-cost replacement of platinum for microbial biofuel cells (MBFCs). The nanorod electrocatalyst had exhibited significant improvements over Pt nanoparticles in terms of forward and backward onset potentials and peak current densities, electronic conductivity, charge transfer resistance, stability in 0.1 M phosphate buffer solution, and cost. It had also demonstrated a more stable forward peak current density at the 100th steady cycle, as well as, higher current density values up to 7,200 s. In addition, the synthesized CeO 2 nanorods also produced ∼10 3 times higher exchange current density over the synthesized Pt nanoparticles. Furthermore, in a single-chamber MBFC, the CeO 2 nanorods exhibited higher open circuit voltage (+0.80 V after 14 days), and output current (3613 mAm −2 at +0.3 V) and power (1084 mWm −2 ) densities in comparison to Pt nanoparticles.
科研通智能强力驱动
Strongly Powered by AbleSci AI