TY - JOUR
T1 - General and Scalable Solid-State Synthesis of 2D MPS3 (M = Fe, Co, Ni) Nanosheets and Tuning Their Li/Na Storage Properties
AU - Liang, Qinghua
AU - Zheng, Yun
AU - Du, Chengfeng
AU - Luo, Yubo
AU - Zhang, Jianli
AU - Li, Bing
AU - Zong, Yun
AU - Yan, Qingyu
N1 - Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2017/12/11
Y1 - 2017/12/11
N2 - The scalable preparation of 2D nanomaterials is challenging and highly desirable for fundamental interest and practical applications. Herein, an efficient solid-state method is developed for producing emerging 2D ternary layered metal phosphorus trichalcogenide (MPS3, M = Fe, Co, Ni) nanosheets on a large scale. The high-quality MPS3 single-crystal nanosheets are exposed with (00l) facets and have an average lateral size of ≈200 nm and an average thickness of ≈18 nm. Moreover, their interlayer spacing can be expanded by intercalating propylamine at room temperature. For Li/Na storage applications, such MPS3 nanosheets can achieve: i) high specific capacity owing to the intrinsic composition, realizing a theoretical specific capacity higher than the corresponding metal oxides, and ii) superior rate capability due to the large extrinsic pseudocapacitive contribution from surface redox reactions. Remarkably, the propylamine-intercalated samples show improved Li/Na storage performance due to the better electrical conductivity and enlarged interlayer distance to allow easier ion accessibility and faster ion diffusion. Impressively, the Na-ion batteries based on the intercalated NiPS3 nanosheets deliver 1090 and 536 mA h g−1 at 0.05 and 5.0 A g−1, respectively. This work paves the way for developing MPS3 nanosheets for energy storage and conversion, catalysis, and so on.
AB - The scalable preparation of 2D nanomaterials is challenging and highly desirable for fundamental interest and practical applications. Herein, an efficient solid-state method is developed for producing emerging 2D ternary layered metal phosphorus trichalcogenide (MPS3, M = Fe, Co, Ni) nanosheets on a large scale. The high-quality MPS3 single-crystal nanosheets are exposed with (00l) facets and have an average lateral size of ≈200 nm and an average thickness of ≈18 nm. Moreover, their interlayer spacing can be expanded by intercalating propylamine at room temperature. For Li/Na storage applications, such MPS3 nanosheets can achieve: i) high specific capacity owing to the intrinsic composition, realizing a theoretical specific capacity higher than the corresponding metal oxides, and ii) superior rate capability due to the large extrinsic pseudocapacitive contribution from surface redox reactions. Remarkably, the propylamine-intercalated samples show improved Li/Na storage performance due to the better electrical conductivity and enlarged interlayer distance to allow easier ion accessibility and faster ion diffusion. Impressively, the Na-ion batteries based on the intercalated NiPS3 nanosheets deliver 1090 and 536 mA h g−1 at 0.05 and 5.0 A g−1, respectively. This work paves the way for developing MPS3 nanosheets for energy storage and conversion, catalysis, and so on.
KW - 2D nanomaterials
KW - high capacity
KW - Li/Na-ion batteries
KW - metal phosphorus trichalcogenides
KW - pseudocapacitive contribution
UR - http://www.scopus.com/inward/record.url?scp=85129258275&partnerID=8YFLogxK
U2 - 10.1002/SMTD.201700304
DO - 10.1002/SMTD.201700304
M3 - 文章
AN - SCOPUS:85129258275
SN - 2366-9608
VL - 1
JO - Small Methods
JF - Small Methods
IS - 12
M1 - 1700304
ER -