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High‐Yield Exfoliation of Ultrathin 2D Ni 3 Cr 2 P 2 S 9 and Ni 3 Cr 2 P 2 Se 9 Nanosheets
Author(s) -
Lai Zhuangchai,
Chaturvedi Apoorva,
Shi Zhenyu,
Zhao Jiangqi,
Tran Thu Ha,
Chen Bo,
Huang Ying,
Cao Xiehong,
He Qiyuan,
Zeng Zhiyuan,
Tan Chaoliang,
Zhang Hua
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202006866
Subject(s) - materials science , exfoliation joint , nanomaterials , thiophosphate , nanotechnology , yield (engineering) , nanometre , nanosheet , nanoscopic scale , supercapacitor , metal , chemical engineering , electrode , electrochemistry , graphene , metallurgy , composite material , chemistry , organic chemistry , engineering
Multinary layered 2D nanomaterials can exhibit distinct physicochemical properties and innovative applications as compared to binary 2D nanomaterials due to their unique crystal structures. However, it still remains a challenge for the high‐yield preparation of high‐quality multinary 2D nanosheets. Here, the high‐yield and large‐scale production of two quaternary metal thiophosphate nanosheets are reported, i.e., Ni 3 Cr 2 P 2 S 9 and Ni 3 Cr 2 P 2 Se 9 , via the liquid exfoliation of their layered bulk crystals. The exfoliated single‐crystalline Ni 3 Cr 2 P 2 S 9 nanosheets, with a lateral size ranging from a few hundred nanometers to a few micrometers and thickness of 1.4 ± 0.2 nm, can be easily used to prepare flexible thin films via a simple vacuum filtration process. As a proof‐of‐concept application, the fabricated thin film is used as a supercapacitor electrode with good specific capacitance. These high‐yield, large‐scale, solution‐processable quaternary metal thiophosphate nanosheets could also be promising in other applications like biosensors, cancer therapies, and flexible electronics.