Fluorine-Doped Carbon Blacks: Highly Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction
Fluorine-Doped Carbon Blacks: Highly Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction
复制标题
掺氟炭黑：用于氧还原反应的高效无金属电催化剂
DOI：
10.1021/cs400374k
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发表时间：
2013-08-01
期刊：
影响因子：
12.9
通讯作者：
Xing, Wei
中科院分区：
文献类型：
--
作者：
Sun, Xiujuan;Zhang, Yuwei;Xing, Wei
为了实现燃料电池实用化的工业化发展目标，廉价、可持续、高性能的氧还原反应电催化剂(ORR)是铂等稀有材料的理想替代品。本工作首次合成了无金属、低成本、高性能的ORR电催化剂--可持续掺氟炭黑(CB-F)。在碱性介质中，最好的一种(BP-18F，以黑珍珠2000为基础)的电催化活性、长期运行稳定性和耐毒性与铂基或其他最好的非铂基催化剂相当。以BP-18F为阴极的碱性直接甲醇燃料电池的最大功率密度(3 mg/cm~2)在60℃时为∼15.56 mW/cm~2，而商用铂/碳燃料电池的最大功率密度为9.44 mW/cm~2(3 mg/cm~2)。所有这些结果都清楚地表明，这些可持续的CB-F催化剂是碱性燃料电池中最有希望的铂替代品。罪..。
For the goal of practical industrial development of fuel cells, inexpensive, sustainable, and high performance electrocatalysts for oxygen reduction reactions (ORR) are highly desirable alternatives to platinum (Pt) and other rare materials. In this work, sustainable fluorine (F)-doped carbon blacks (CB-F) as metal-free, low-cost, and high-performance electrocatalysts for ORR were synthesized for the first time. The performance (electrocatalytic activity, long-term operation stability, and tolerance to poisons) of the best one (BP-18F, based on Black Pearls 2000 (BP)) is on the same level as Pt-based or other best non-Pt-based catalysts in alkaline medium. The maximum power density of alkaline direct methanol fuel cell with BP-18F as the cathode (3 mg/cm2) is ∼15.56 mW/cm2 at 60 °C, compared with a maximum of 9.44 mW/cm2 for commercial Pt/C (3 mgPt/cm2). All these results unambiguously demonstrate that these sustainable CB-F catalysts are the most promising alternatives to Pt in an alkaline fuel cell. Sin...