A facile high-temperature molten salt bath method was developed to effectively dope sulfur into carbon. Molten potassium sulfide acts as a high-concentration sulfur source and provides an immersion bath, thus favoring sulfur doping. Resultant sulfur-doped carbon shows an exceptionally high sulfur content of 1.50 at.%, manifesting its favorable effect on catalysing the oxygen reduction reaction.

中文翻译：

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高温熔盐浴中碳的有效硫掺杂及其电催化氧还原反应

为了将硫有效地掺杂到碳中，人们开发了一种简便的高温熔盐浴方法。熔融的硫化钾用作高浓度的硫源，并提供浸没浴，因此有利于硫的掺杂。所得的掺杂硫的碳显示出1.50原子％的极高的硫含量，表现出其对催化氧还原反应的有利作用。