Research data for article: High-corrosion-resistance mechanism of graphitized platelet-type carbon nanofibers in the OER in a concentrated alkaline electrolyte

This study employed various carbon materials, including platelet-type carbon nanofibers (pCNFs) that underwent heat treatment at 2000°C (pCNF2000), 2400°C (pCNF2400), and 3000°C (pCNF3000). Additionally, two types of commercial carbon black materials were used: TOKA Black#3800 from Tokai Carbon (TB) and acetylene black from Strem Chemicals (AB).Carbon materials play a crucial role as supports for electrocatalytic nanoparticles, such as Pt and transition metal oxide nanoparticles. They also serve as conductive additives in alkaline fuel cells and aqueous metal-air rechargeable batteries. In these electrochemical energy conversion devices, corrosion-resistant carbon materials are essential. The present study underscores the potential of highly graphitized platelet-type carbon nanofibers (pCNFs) for such applications. Achieving a uniform coverage of the carbon edge plane with hydroxyl species is identified as a key factor for passivation, providing a significant avenue for designing corrosion-resistant carbon materials.FWHM stands for "Full Width at Half Maximum." It represents the width of a curve at half of its maximum amplitude, describing the extent of a distribution or the range of values over which a function or signal is equal to or greater than half of its maximum value. RHE stands for " Reversible Hydrogen Electrode." It is a reference electrode used in electrochemical experiments to standardize and measure the potential of half-cells.

本研究使用了多种碳材料，包括经2000℃（pCNF2000）、2400℃（pCNF2400）及3000℃（pCNF3000）热处理的片状碳纳米纤维（platelet-type carbon nanofibers，pCNFs）。此外，本研究还采用了两种商用炭黑材料：来自东海碳素（Tokai Carbon）的TOKA Black#3800（简称TB），以及来自Strem Chemicals的乙炔黑（acetylene black，AB）。
碳材料作为铂（Pt）及过渡金属氧化物纳米颗粒等电催化纳米颗粒的载体，在碱性燃料电池和水系可充电金属-空气电池中亦可作为导电添加剂。在这类电化学能量转换器件中，耐腐蚀性碳材料至关重要。本研究凸显了高石墨化片状碳纳米纤维（pCNFs）在上述应用中的潜力。研究发现，使羟基物种均匀覆盖碳边缘平面是实现钝化的关键因素，这为耐腐蚀性碳材料的设计提供了重要可行方向。
半高宽（Full Width at Half Maximum，FWHM）指曲线在最大幅值一半处的宽度，用于表征分布的范围，或函数、信号幅值不小于最大值一半的取值区间。
可逆氢电极（Reversible Hydrogen Electrode，RHE）是电化学实验中用于标准化测量半电池电位的参比电极。