Ether-Induced Phase Transition toward Stabilized Layered Structure of MoS2with Extraordinary Sodium Storage Performance

Lin，Dongmei1,2; Shi，Xiuling1; Li，Kaikai1; Wang，Man2,3; Sun，Sheng4; Wu，Junwei1; Zhou，Limin5; Chen，Guohua2; Zhang，Tong Yi6

2022-07-04

10.1021/acsmaterialslett.2c00262

ACS Materials Letters   Impact Factor & Quartile

2639-4979

Ether-based electrolytes have long been proven to be advantageous over ether-based electrolytes in sodium ion batteries (SIBs), but the understanding of their effect on the phase transition of electrode materials during electrochemical cycling is very limited. In this work, we study the phase transition and electrochemical performance of 2H-MoS2 in ether- and ester-based electrolytes. Interestingly, we find that the MoS2 anode develops MoS2/diglyme-Na+ superlattices induced by cointercalation of Na+ and an ether solvent in an ether-based electrolyte, rather than the conversion reaction observed in ester-based electrolytes. The superlattices consist of mixed semiconductive 2H and metallic 1T phases, and are structurally stable and kinetically favorable for the repeated sodiation, which greatly enhances the capacity, cycling, and rate performance of MoS2. Specifically, the three-dimensional MoS2 nanoflowers deliver an ultrahigh capacity of 446.5 mAh g-1 at 5 A g-1 with no capacity fading after more than 3700 cycles in an ether-based electrolyte.

SCI ; EI

English

Others

WOS:000818810900001

20223012421020

Anodes ; Electrolytes ; Esters ; Layered semiconductors ; Metal ions ; Molybdenum compounds ; Sodium-ion batteries

Metallurgy:531.1 ; Electric Batteries and Fuel Cells:702 ; Secondary Batteries:702.1.2 ; Semiconducting Materials:712.1 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1

2-s2.0-85134804538

Scopus

1.School of Materials Science and Engineering,Harbin Institute of Technology,Shenzhen,518055,China
2.Department of Mechanical Engineering,Research Institute for Smart Energy,The Hong Kong Polytechnic University,Kowloon,Hong Kong
3.School of Chemical Engineering,Xi'An Jiaotong University,Xi'an,Shaanxi,710049,China
4.Materials Genome Institute,Shanghai University,Shanghai,333 Nanchen Road,200444,China
5.School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,518055,China
6.The Hong Kong University of Science and Technology (Guangzhou),Advanced Materials Thrust and Sustainable Energy and Environment Thrust,Guangzhou,Nansha, Guangdong,511400,China

Lin，Dongmei,Shi，Xiuling,Li，Kaikai,et al. Ether-Induced Phase Transition toward Stabilized Layered Structure of MoS2with Extraordinary Sodium Storage Performance[J]. ACS Materials Letters,2022,4(7):1341-1349.

Lin，Dongmei.,Shi，Xiuling.,Li，Kaikai.,Wang，Man.,Sun，Sheng.,...&Zhang，Tong Yi.(2022).Ether-Induced Phase Transition toward Stabilized Layered Structure of MoS2with Extraordinary Sodium Storage Performance.ACS Materials Letters,4(7),1341-1349.

Lin，Dongmei,et al."Ether-Induced Phase Transition toward Stabilized Layered Structure of MoS2with Extraordinary Sodium Storage Performance".ACS Materials Letters 4.7(2022):1341-1349.