Details
| Original language | English |
|---|---|
| Pages (from-to) | 15047-15056 |
| Number of pages | 10 |
| Journal | ACS NANO |
| Volume | 15 |
| Issue number | 9 |
| Early online date | 16 Sept 2021 |
| Publication status | Published - 28 Sept 2021 |
Abstract
Keywords
- Li-S batteries, Mo-S bond, Mo-based compounds, electrocatalyst, monodisperse Mo nanoparticles, quasi-solid-state
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- General Engineering
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: ACS NANO, Vol. 15, No. 9, 28.09.2021, p. 15047-15056.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Monodisperse Molybdenum Nanoparticles as Highly Efficient Electrocatalysts for Li-S Batteries
AU - Liu, Yuping
AU - Chatterjee, Atasi
AU - Rusch, Pascal
AU - Wu, Chuanqiang
AU - Nan, Pengfei
AU - Peng, Manhua
AU - Bettels, Frederik
AU - Li, Taoran
AU - Ma, Chenxi
AU - Zhang, Chaofeng
AU - Ge, Binghui
AU - Bigall, Nadja-Carola
AU - Pfnur, H.
AU - Ding, Fei
AU - Zhang, Lin
N1 - Funding Information: N.C.B. and P.R. thank the DFG for partial funding under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) and the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 714429). The authors moreover thank the Laboratory of Nano and Quantum Engineering (LNQE) for providing the SEM facility.
PY - 2021/9/28
Y1 - 2021/9/28
N2 - Lithium-sulfur (Li-S) batteries have attracted widespread attention due to their high theoretical energy density. However, their practical application is still hindered by the shuttle effect and the sluggish conversion of lithium polysulfides (LiPSs). Herein, monodisperse molybdenum (Mo) nanoparticles embedded onto nitrogen-doped graphene (Mo@N-G) were developed and used as a highly efficient electrocatalyst to enhance LiPS conversion. The weight ratio of the electrocatalyst in the catalyst/sulfur cathode is only 9%. The unfilled d orbitals of oxidized Mo can attract the electrons of LiPS anions and form Mo–S bonds during the electrochemical process, thus facilitating fast conversion of LiPSs. Li-S batteries based on the Mo@N-G/S cathode can exhibit excellent rate performance, large capacity, and superior cycling stability. Moreover, Mo@N-G also plays an important role in room-temperature quasi-solid-state Li-S batteries. These interesting findings suggest the great potential of Mo nanoparticles in building high-performance Li-S batteries.
AB - Lithium-sulfur (Li-S) batteries have attracted widespread attention due to their high theoretical energy density. However, their practical application is still hindered by the shuttle effect and the sluggish conversion of lithium polysulfides (LiPSs). Herein, monodisperse molybdenum (Mo) nanoparticles embedded onto nitrogen-doped graphene (Mo@N-G) were developed and used as a highly efficient electrocatalyst to enhance LiPS conversion. The weight ratio of the electrocatalyst in the catalyst/sulfur cathode is only 9%. The unfilled d orbitals of oxidized Mo can attract the electrons of LiPS anions and form Mo–S bonds during the electrochemical process, thus facilitating fast conversion of LiPSs. Li-S batteries based on the Mo@N-G/S cathode can exhibit excellent rate performance, large capacity, and superior cycling stability. Moreover, Mo@N-G also plays an important role in room-temperature quasi-solid-state Li-S batteries. These interesting findings suggest the great potential of Mo nanoparticles in building high-performance Li-S batteries.
KW - Li-S batteries
KW - Mo-S bond
KW - Mo-based compounds
KW - electrocatalyst
KW - monodisperse Mo nanoparticles
KW - quasi-solid-state
UR - http://www.scopus.com/inward/record.url?scp=85116018504&partnerID=8YFLogxK
U2 - 10.15488/11333
DO - 10.15488/11333
M3 - Article
VL - 15
SP - 15047
EP - 15056
JO - ACS NANO
JF - ACS NANO
SN - 1936-0851
IS - 9
ER -