Cobalt in Nitrogen-Doped Graphene as Single-Atom Catalyst for High-Sulfur Content Lithium–Sulfur Batteries
University of Science and Technology of China · Hefei University of Technology · +7 more institutions
Abstract
Because of their high theoretical energy density and low cost, lithium–sulfur (Li–S) batteries are promising next-generation energy storage devices. The electrochemical performance of Li–S batteries largely depends on the efficient reversible conversion of Li polysulfides to Li2S in discharge and to elemental S during charging. Here, we report on our discovery that monodisperse cobalt atoms embedded in nitrogen-doped graphene (Co–N/G) can trigger the surface-mediated reaction of Li polysulfides. Using a combination of operando X-ray absorption spectroscopy and first-principles calculation, we reveal that the Co–N–C coordination center serves as a bifunctional electrocatalyst to facilitate both the formation…
Citation impact
- FWCI
- 99.03
- Percentile
- 100%
- References
- 53
Authors
11- ZDZhenzhen Du
University of Science and Technology of China, Hefei University of Technology, Hefei National Center for Physical Sciences at Nanoscale, Collaborative Innovation Center of Chemistry for Energy Materials
- XCXingjia Chen
University of Science and Technology of China, CAS Key Laboratory of Urban Pollutant Conversion
- WHWei Hu
University of Science and Technology of China, National Synchrotron Radiation Laboratory
- CCCheng‐Hao Chuang
Tamkang University
- SXShuai Xie
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale, Collaborative Innovation Center of Chemistry for Energy Materials
Topics & keywords
- Chemistry
- Bifunctional
- Gravimetric analysis
- Cobalt
- Electrocatalyst
- Sulfur
- Catalysis
- Electrochemistry
- Affordable and clean energy
Funding
- NRNational Research Centre
- NNNational Natural Science Foundation of ChinaAwards: 51761145046, 21503064
- MOMinistry of Education of the People's Republic of ChinaAward: WK3430000003
- CAChinese Academy of SciencesAward: XDB01020300
- MOMinistry of Science and Technology of the People's Republic of ChinaAwards: 2016YFA0200602, 2018YFA0208603