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Bai Y, Nguyen TT, Song H, Chu R, Tran DT, Kim NH, Lee JH. Ru Single Atom Dispersed on MoS 2/MXene for Enhanced Sulfur Reduction Reaction in Lithium-Sulfur Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402074. [PMID: 38794990 DOI: 10.1002/smll.202402074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/07/2024] [Indexed: 05/27/2024]
Abstract
The high theoretical energy density (2600 Wh kg-1) and low cost of lithium-sulfur batteries (LSBs) make them an ideal alternative for the next-generation energy storage system. Nevertheless, severe capacity degradation and low sulfur utilization resulting from shuttle effect hinder their commercialization. Herein, Single-atom Ru-doped 1T/2H MoS2 with enriched defects decorates V2C MXene (Ru-MoS2/MXene) produced by a new phase-engineering strategy employed as sulfur host to promote polysulfide adsorption and conversion reaction kinetics. The Ru single atom-doped adjusts the chemical environment of the MoS2/MXene to anchor polysulfide and acts as an efficient center to motivate the redox reaction. In addition, the rich defects of the MoS2 and ternary boundary among 1T/2H MoS2 and V2C accelerate the charge transfer and ion movements for the reaction. As expected, the Ru-MoS2/MXene/S cathode-based cell exhibits a high-rate capability of 684.3 mAh g-1 at 6 C. After 1000 cycles, the Ru-MoS2/MXene/S cell maintains an excellent cycling stability of 696 mAh g-1 at 2 C with a capacity degradation as low as 0.02% per cycle. Despite a high sulfur loading of 9.5 mg cm-2 and a lean electrolyte-to-sulfur ratio of 4.3, the cell achieves a high discharge capacity of 726 mAh g-1.
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Affiliation(s)
- Yanqun Bai
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
- AHES Co., 445 Techno Valley-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55314, Republic of Korea
| | - Thanh Tuan Nguyen
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Hewei Song
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Rongrong Chu
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Duy Thanh Tran
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Nam Hoon Kim
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Joong Hee Lee
- Advanced Materials Institute of Nano Convergence Engineering (BK21 FOUR), Dept. of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
- AHES Co., 445 Techno Valley-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55314, Republic of Korea
- Carbon Composite Research Centre, Department of Polymer-Nano Science and Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
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Tan X, Zhao D, Sun Y, Duan Z, Wang X, Wu X. Co doped MoS2 nanosheet: a stable and pH-universal electrocatalyst for efficient hydrogen evolution reaction. CrystEngComm 2022. [DOI: 10.1039/d2ce00951j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Generally, the hydrogen generation of non-noble metal based electrocatalysts is limited by the high overpotential and acid-base environment of electrolyte. Therefore, it is essential to develop hydrogen evolution reaction (HER)...
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