Details
| Original language | English |
|---|---|
| Article number | 2105544 |
| Journal | Advanced science |
| Volume | 9 |
| Issue number | 11 |
| Publication status | Published - 14 Apr 2022 |
Abstract
Room-temperature sodium–sulfur (RT Na–S) batteries are arousing great interest in recent years. Their practical applications, however, are hindered by several intrinsic problems, such as the sluggish kinetic, shuttle effect, and the incomplete conversion of sodium polysulfides (NaPSs). Here a sulfur host material that is based on tungsten nanoparticles embedded in nitrogen-doped graphene is reported. The incorporation of tungsten nanoparticles significantly accelerates the polysulfides conversion (especially the reduction of Na2S4 to Na2S, which contributes to 75% of the full capacity) and completely suppresses the shuttle effect, en route to a fully reversible reaction of NaPSs. With a host weight ratio of only 9.1% (about 3–6 times lower than that in recent reports), the cathode shows unprecedented electrochemical performances even at high sulfur mass loadings. The experimental findings, which are corroborated by the first-principles calculations, highlight the so far unexplored role of tungsten nanoparticles in sulfur hosts, thus pointing to a viable route toward stable Na–S batteries at room temperatures.
Keywords
- electrocatalyst, kinetics, large-scale energy storage, room-temperature sodium-sulfur batteries, tungsten nanoparticles
ASJC Scopus subject areas
- Medicine(all)
- Medicine (miscellaneous)
- Chemical Engineering(all)
- General Chemical Engineering
- Materials Science(all)
- General Materials Science
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry, Genetics and Molecular Biology (miscellaneous)
- Engineering(all)
- General Engineering
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Advanced science, Vol. 9, No. 11, 2105544, 14.04.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tungsten Nanoparticles Accelerate Polysulfides Conversion
T2 - A Viable Route toward Stable Room-Temperature Sodium–Sulfur Batteries
AU - Liu, Yuping
AU - Ma, Shuangying
AU - Rosebrock, Marina
AU - Rusch, Pascal
AU - Barnscheidt, Yvo
AU - Wu, Chuanqiang
AU - Nan, Pengfei
AU - Bettels, Frederik
AU - Lin, Zhihua
AU - Li, Taoran
AU - Ge, Binghui
AU - Bigall, Nadja C.
AU - Pfnür, Herbert
AU - Ding, Fei
AU - Zhang, Chaofeng
AU - Zhang, Lin
N1 - Funding Information: The authors acknowledge the support from Laboratory of Nano and Quantum Engineering (LNQE) in Leibniz University Hannover. L.Z. acknowledges the funding supports from “CircularLIB” from Lower Saxony Ministry of Science and Culture (MWK) and from Hannover School for Nanotechnology (hsn‐digital). M.R., P.R., and N.C.B. would like to acknowledge the financial support of the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement 714429). N.C.B. would like to additionally thank the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for funding under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4‐1.
PY - 2022/4/14
Y1 - 2022/4/14
N2 - Room-temperature sodium–sulfur (RT Na–S) batteries are arousing great interest in recent years. Their practical applications, however, are hindered by several intrinsic problems, such as the sluggish kinetic, shuttle effect, and the incomplete conversion of sodium polysulfides (NaPSs). Here a sulfur host material that is based on tungsten nanoparticles embedded in nitrogen-doped graphene is reported. The incorporation of tungsten nanoparticles significantly accelerates the polysulfides conversion (especially the reduction of Na2S4 to Na2S, which contributes to 75% of the full capacity) and completely suppresses the shuttle effect, en route to a fully reversible reaction of NaPSs. With a host weight ratio of only 9.1% (about 3–6 times lower than that in recent reports), the cathode shows unprecedented electrochemical performances even at high sulfur mass loadings. The experimental findings, which are corroborated by the first-principles calculations, highlight the so far unexplored role of tungsten nanoparticles in sulfur hosts, thus pointing to a viable route toward stable Na–S batteries at room temperatures.
AB - Room-temperature sodium–sulfur (RT Na–S) batteries are arousing great interest in recent years. Their practical applications, however, are hindered by several intrinsic problems, such as the sluggish kinetic, shuttle effect, and the incomplete conversion of sodium polysulfides (NaPSs). Here a sulfur host material that is based on tungsten nanoparticles embedded in nitrogen-doped graphene is reported. The incorporation of tungsten nanoparticles significantly accelerates the polysulfides conversion (especially the reduction of Na2S4 to Na2S, which contributes to 75% of the full capacity) and completely suppresses the shuttle effect, en route to a fully reversible reaction of NaPSs. With a host weight ratio of only 9.1% (about 3–6 times lower than that in recent reports), the cathode shows unprecedented electrochemical performances even at high sulfur mass loadings. The experimental findings, which are corroborated by the first-principles calculations, highlight the so far unexplored role of tungsten nanoparticles in sulfur hosts, thus pointing to a viable route toward stable Na–S batteries at room temperatures.
KW - electrocatalyst
KW - kinetics
KW - large-scale energy storage
KW - room-temperature sodium-sulfur batteries
KW - tungsten nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=85124508136&partnerID=8YFLogxK
U2 - 10.1002/advs.202105544
DO - 10.1002/advs.202105544
M3 - Article
AN - SCOPUS:85124508136
VL - 9
JO - Advanced science
JF - Advanced science
SN - 2198-3844
IS - 11
M1 - 2105544
ER -