材料科学技术(英文版)2024，Vol.171Issue(4) ：209-221.DOI:10.1016/j.jmst.2023.06.033

Hydrolysis mechanism of YbB2C2 and the microstructure of the carbon derived from the hydrolysis reaction

Zhihui Li Hao Zhang Jixin Chen Jiemin Wang Xiaohui Wang Jinxing Yang Chao Zhang Zerong Zhang Hongyang Liu Fei Huang Meishuan Li Fei Li
材料科学技术(英文版)2024，Vol.171Issue(4) ：209-221.DOI:10.1016/j.jmst.2023.06.033
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  • NETL
  • NSTL
  • 万方数据

Hydrolysis mechanism of YbB2C2 and the microstructure of the carbon derived from the hydrolysis reaction

Zhihui Li 1Hao Zhang 2Jixin Chen 3Jiemin Wang 3Xiaohui Wang 3Jinxing Yang 2Chao Zhang 3Zerong Zhang 2Hongyang Liu 3Fei Huang 2Meishuan Li 3Fei Li4
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作者信息

  • 1. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Shanghai Key Laboratory for High Temperature Materials and Precision Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
  • 2. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China
  • 3. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 4. Shanghai Key Laboratory for High Temperature Materials and Precision Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
  • 折叠

Abstract

Carbide-derived carbon(CDC)materials have gained great attention due to the excellent properties for various potential applications.Here,graphite crystal is formed during a room-temperature hydrolysis pro-cess of layered compound YbB2C2.The formation mechanism can be demonstrated by a YbB2C2 molecular cell:Yb3+acts as a cathode where H2O molecule is reduced to H atom and OH-ion,while(B2C2)3-acts as an anode where OH-ion is oxidized to O atom.Then,YbB2C2 molecular cell begins to disintegrate,i.e.,Yb3+ion,B and C atoms dissociate from the molecular cell.The as-produced C atoms combine to form graphite crystal.The initial graphite crystal is a cabbage-like microsphere,and then it gradually disintegrates and transforms into layered graphite.In addition,YbB6,Yb3(OH)3n(BO3)(3-n)sol,hydrogen,hydrocarbons,and carbon oxides form simultaneously.Our method provides a general and inexpensive route to obtain carbide-derived graphite crystal.

Key words

Carbide-derived carbon/YbB2C2/Hydrolysis/Molecular cell/First-principles calculations

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基金项目

National Natural Science Foundation of China(52074183)

National Natural Science Foundation of China(50802099)

National Natural Science Foundation of China(51072201)

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCD
影响因子：0.657
ISSN：1005-0302
参考文献量74
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