CAJ | 학술논문

数十年来，碳气凝胶因其在催化剂载体、电容器和锂电池电极材料以及吸附剂等领域的潜在应用而备受关注。然而，传统碳气凝胶的制备往往使用昂贵且有毒的前驱体，其方法也较为复杂，不利于大规模生产及应用。本文介绍了一种以细菌纤维素为前驱体制备氮掺杂碳纤维气凝胶的方法。该方法廉价高效，简单易行且对环境无害。所制气凝胶具有密度低、孔隙度高、比表面积大以及导电性良好等优点。它继承了细菌纤维素生物质优异的三维交联多孔结构的特点，可直接用作氧还原催化剂，表现出优异的催化性能，预示着其广泛的应用前景。这在该领域的应用报道尚属首次。
수십년래，탄기응효인기재최화제재체、전용기화리전지전겁재료이급흡부제등영역적잠재응용이비수관주。연이，전통탄기응효적제비왕왕사용앙귀차유독적전구체，기방법야교위복잡，불리우대규모생산급응용。본문개소료일충이세균섬유소위전구체제비담참잡탄섬유기응효적방법。해방법렴개고효，간단역행차대배경무해。소제기응효구유밀도저、공극도고、비표면적대이급도전성량호등우점。타계승료세균섬유소생물질우이적삼유교련다공결구적특점，가직접용작양환원최화제，표현출우이적최화성능，예시착기엄범적응용전경。저재해영역적응용보도상속수차。
Carbon aerogels have attracted considerable attention over the past few decades as promising ma-terials for catalyst supports, electrodes for supercapacitors and lithium-ion batteries, and adsor-bents. However, expensive and toxic precursors as well as complicated synthetic methods dramati-cally limit their large-scale production and application. In this work, we developed a facile and effec-tive route to prepare a N-doped carbon nanofiber aerogel (N-CNFA) with low mass density, contin-uous porosity, high specific surface area, and electrical conductivity from a bacterial cellulose pre-cursor. Because of the highly porous and interconnected 3D structure, the obtained N-doped carbon aerogel was used directly as a catalyst for the oxygen reduction reaction (ORR), and it exhibited superior catalytic activity. This activity was much higher than that obtained without N-doping, and it can potentially be applied to high-performance fuel cells.