Liang Zibin, Wu Yingxiao, Cheng Jinqian, Tang Yanqun, Shi Jinming, Qiu Tianjie, Li Wei, Gao Song, Zhong Ruiqin, Zou Ruqiang
Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University Beijing, Beijing, 100871, P. R. China.
Institute of Clean Energy, Peking University, Beijing, 100871, P. R. China.
Small. 2021 May;17(19):e2100135. doi: 10.1002/smll.202100135. Epub 2021 Apr 1.
3D carbon-based materials with multiscale hierarchy are promising electrode materials for electrochemical energy storage and conversion applications, but the synthesis in an efficient and large-scale way is still a great challenge. Herein, a carbon nanorod-assembled 3D superstructure is facilely fabricated by morphology-preserving conversion of a metal-organic framework (MOF) nanorod-assembled superstructure. The MOF superstructure can be fabricated in one-pot synthesis with high reproducibility and high yield by precise control of the MOF nucleation and growth. Its derived carbon inherits the nanorod-assembled superstructure and possesses abundant micropores and nitrogen doping, which can serve as a high-performance anode material for fast potassium storage. The superiority of the superstructure and the synergism of micropore capturing and nitrogen anchoring are verified both experimentally and theoretically.
具有多尺度层次结构的3D碳基材料是用于电化学能量存储和转换应用的有前景的电极材料，但以高效且大规模的方式进行合成仍然是一个巨大的挑战。在此，通过金属有机框架（MOF）纳米棒组装的超结构的形态保留转化，轻松制备了碳纳米棒组装的3D超结构。通过精确控制MOF的成核和生长，可以通过一锅合成以高重现性和高产率制备MOF超结构。其衍生的碳继承了纳米棒组装的超结构，并具有丰富的微孔和氮掺杂，可作为用于快速储钾的高性能阳极材料。通过实验和理论验证了超结构的优越性以及微孔捕获和氮锚定的协同作用。
