Bu Fanxing, Feng Xiaoxiang, Jiang Tiancai, Shakir Imran, Xu Yuxi
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China.
Sustainable Energy Technologies Center, College of Engineering, King Saud University, Riyadh, 11421, Kingdom of Saudi Arabia.
Chemistry. 2017 Jun 22;23(35):8358-8363. doi: 10.1002/chem.201700742. Epub 2017 Apr 13.
Facile and controllable integration of metal cyanides (MCs) into three-dimensional graphene (3DG) with advantageous structures is of fundamental importance for the development of superior MC-based electrode materials for electrochemical energy storage and catalysis. Here a facile and versatile spatially-confined Ostwald ripening strategy was developed to synthesize a series of 3DG wrapped MC aerogels with different compositions, size, and structure based on the chemical instability of MC in the reaction system. Remarkably, the integration of Prussian blue (PB) into 3DG, with such unique architecture, largely improves the rate performance and long-term cycling stability of PB as a cathode material for sodium ion batteries.
将金属氰化物（MCs）简便且可控地整合到具有优势结构的三维石墨烯（3DG）中，对于开发用于电化学能量存储和催化的优质基于MC的电极材料至关重要。在此，基于MC在反应体系中的化学不稳定性，开发了一种简便通用的空间受限奥斯特瓦尔德熟化策略，以合成一系列具有不同组成、尺寸和结构的3DG包裹MC气凝胶。值得注意的是，将普鲁士蓝（PB）整合到具有这种独特结构的3DG中，极大地提高了PB作为钠离子电池阴极材料的倍率性能和长期循环稳定性。
