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Title: Palladium nanocrystals-imbedded mesoporous hollow carbon spheres with enhanced electrochemical kinetics for high performance lithium sulfur batteries

Abstract

Lithium sulfur (Li-S) battery is one promising candidate for high energy density electrochemical energy storage system. Accelerating the sluggish reaction kinetics of sulfur cathode and suppressing the lithium polysulfide (LiPS) shuttle are crucial for the high-performance Li-S batteries. Herein, we prepared the catalytic palladium nano-particles (Pd NPs) imbedded in hollow carbon spheres (Pd@HCS) as sulfur host by a sacrificial template method. Benefitting from the hollow nanostructure and strong chemisorption ability of Pd NPs, Pd@HCS can effectively mitigate the LiPS shuttling via physical and chemical pathways. Furthermore, the Pd NPs as one electrocatalyst can accelerate the redox reaction kinetics of LiPS. The theoretical calculation and X-ray absorption spectroscopy elucidate that the moderate Pd-S bonding between Pd NPs and sulfur species are beneficial to LiPS conversion. The Pd@HCS/S electrode delivers a high initial capacity of 1306 mAh g –1 and 885 mAh g –1 after 100 cycles at 0.2 C, as well as the good cycling stability (a slight capacity decay of 0.068% per cycle over 400 cycles at 1 C). In conclusion, the Pd@HCS/S cathode with the high sulfur loading of 5.88 mg cm –2 delivers an initial capacity of 873 mAh g –1 at 0.2 C and good capacity retentionmore » of 85% after 100 cycles.« less

Authors:
 [1];  [2];  [1]; ORCiD logo [1];  [1];  [1];  [3];  [3];  [1]
  1. Harbin Inst. of Technology, Harbin (China)
  2. City Univ. of Hong Kong, Hong Kong (China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC)
OSTI Identifier:
1504769
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 143; Journal Issue: C; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Ma, Shaobo, Wang, Liguang, Wang, Yang, Zuo, Pengjian, He, Mengxue, Zhang, Han, Ma, Lu, Wu, Tianpin, and Yin, Geping. Palladium nanocrystals-imbedded mesoporous hollow carbon spheres with enhanced electrochemical kinetics for high performance lithium sulfur batteries. United States: N. p., 2018. Web. doi:10.1016/j.carbon.2018.11.086.
Ma, Shaobo, Wang, Liguang, Wang, Yang, Zuo, Pengjian, He, Mengxue, Zhang, Han, Ma, Lu, Wu, Tianpin, & Yin, Geping. Palladium nanocrystals-imbedded mesoporous hollow carbon spheres with enhanced electrochemical kinetics for high performance lithium sulfur batteries. United States. doi:10.1016/j.carbon.2018.11.086.
Ma, Shaobo, Wang, Liguang, Wang, Yang, Zuo, Pengjian, He, Mengxue, Zhang, Han, Ma, Lu, Wu, Tianpin, and Yin, Geping. Fri . "Palladium nanocrystals-imbedded mesoporous hollow carbon spheres with enhanced electrochemical kinetics for high performance lithium sulfur batteries". United States. doi:10.1016/j.carbon.2018.11.086.
@article{osti_1504769,
title = {Palladium nanocrystals-imbedded mesoporous hollow carbon spheres with enhanced electrochemical kinetics for high performance lithium sulfur batteries},
author = {Ma, Shaobo and Wang, Liguang and Wang, Yang and Zuo, Pengjian and He, Mengxue and Zhang, Han and Ma, Lu and Wu, Tianpin and Yin, Geping},
abstractNote = {Lithium sulfur (Li-S) battery is one promising candidate for high energy density electrochemical energy storage system. Accelerating the sluggish reaction kinetics of sulfur cathode and suppressing the lithium polysulfide (LiPS) shuttle are crucial for the high-performance Li-S batteries. Herein, we prepared the catalytic palladium nano-particles (Pd NPs) imbedded in hollow carbon spheres (Pd@HCS) as sulfur host by a sacrificial template method. Benefitting from the hollow nanostructure and strong chemisorption ability of Pd NPs, Pd@HCS can effectively mitigate the LiPS shuttling via physical and chemical pathways. Furthermore, the Pd NPs as one electrocatalyst can accelerate the redox reaction kinetics of LiPS. The theoretical calculation and X-ray absorption spectroscopy elucidate that the moderate Pd-S bonding between Pd NPs and sulfur species are beneficial to LiPS conversion. The Pd@HCS/S electrode delivers a high initial capacity of 1306 mAh g–1 and 885 mAh g–1 after 100 cycles at 0.2 C, as well as the good cycling stability (a slight capacity decay of 0.068% per cycle over 400 cycles at 1 C). In conclusion, the Pd@HCS/S cathode with the high sulfur loading of 5.88 mg cm–2 delivers an initial capacity of 873 mAh g–1 at 0.2 C and good capacity retention of 85% after 100 cycles.},
doi = {10.1016/j.carbon.2018.11.086},
journal = {Carbon},
issn = {0008-6223},
number = C,
volume = 143,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
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