Single-Layered MoS2 Fabricated by Charge-Driven Interlayer Expansion for Superior Lithium/Sodium/Potassium-Ion-Battery Anodes

Li，Zhenwei1,2; Han，Meisheng1,3; Zhang，Yuanbo2; Yuan，Fu1; Fu，Ying1; Yu，Jie1,2

2023

10.1002/advs.202207234

Advanced Science   Impact Factor & Quartile

2198-3844

Single-layered MoS is a promising anode material for lithium-ion batteries (LIBs), sodium-ion batteries (SIBs), and potassium-ion batteries (PIBs) due to its high capacity and isotropic ion transport paths. However, the low intrinsic conductivity and easy-agglomerated feature hamper its applications. Here, a charge-driven interlayer expansion strategy that Co replaces Mo in the doping form to endow MoS layers with negative charges, thus inducing electrostatic repulsion, together with the insertion of gaseous groups, to drive interlayer expansion which once breaks the confinement of interlayer van der Waals force, single-layered MoS is obtained and uniformly dispersed into carbon matrix arising from the transformation of carbonaceous gaseous groups under high vapor pressure, is proposed. Co atom doping helps enhance the intrinsic conductivity of single-layered MoS. Carbon matrix effectively prevents agglomeration of single-layered MoS. The doped Co atoms can be fully transformed into ultrasmall Co nanoparticles during conversion reaction, which enables strong spin-polarized surface capacitance and thus significantly boosts ion transport and storage. Consequently, the prepared material delivers superb Li/Na/K-ion storage performances, which are best in the reported MoS-based anodes. The proposed charge-driven interlayer expansion strategy provides a novel perspective for preparing single-layered MoS which shows huge potential for energy storage.

charge-driven interlayer expansion Co doping Li/Na/K-ion batteries single-layered MoS2 spin-polarized surface capacitance

SCI

English

Corresponding

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Scopus

1.Songshan Lake Materials Laboratory,Dongguan,Guangdong,523808,China
2.Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems,Shenzhen Engineering Lab for Supercapacitor Materials,School of Material Science and Engineering,Harbin Institute of Technology,Shenzhen University Town,Shenzhen,518055,China
3.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Li，Zhenwei,Han，Meisheng,Zhang，Yuanbo,et al. Single-Layered MoS2 Fabricated by Charge-Driven Interlayer Expansion for Superior Lithium/Sodium/Potassium-Ion-Battery Anodes[J]. Advanced Science,2023.

Li，Zhenwei,Han，Meisheng,Zhang，Yuanbo,Yuan，Fu,Fu，Ying,&Yu，Jie.(2023).Single-Layered MoS2 Fabricated by Charge-Driven Interlayer Expansion for Superior Lithium/Sodium/Potassium-Ion-Battery Anodes.Advanced Science.

Li，Zhenwei,et al."Single-Layered MoS2 Fabricated by Charge-Driven Interlayer Expansion for Superior Lithium/Sodium/Potassium-Ion-Battery Anodes".Advanced Science (2023).