Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery

Leng, LZeng, XSong, HShu, TWang, HRen, JianweiLiao, S2020-03-242020-03-242019Leng, L. et al. 2019. Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery. ACS Sustainable Chemistry & Engineering, vol. 7, no. 1, pp. 430-4392168-0485https://pubs.acs.org/doi/10.1021/acssuschemeng.8b03849https://doi.org/10.1021/acssuschemeng.8b03849http://hdl.handle.net/10204/11397Copyright: 2019 American Chemical Society. This is a post-print version. The definitive version of the work is published in ACS Sustainable Chemistry & Engineering, vol. 7, no. 1, pp. 430-439Seeking to design high-efficiency catalyst (LMO@N-rGO) for Li-O(sub2) batteries, we suggested a onestep hydrothermal strategy to grow well-crystallized spinel LiMn(sub2)O(sub4) (LMO) nanoparticles homogeneously on nitrogendoped reduced graphene oxide nanosheets (N-rGO). We found that the prepared material can yield a twin-function battery, functioning as a Li-O(sub2) (air) battery under the oxygen atmosphere and a Li-ion battery in the absence of oxygen. In the Li-O(sub2) configuration, the material displayed a lower charge plateau voltage for 0.21 V and excellent cycling performance (120 cycles at 1000 mA h g(sup-1) limited capacity). Furthermore, in the absence of oxygen, the material exhibited very good Li-ion battery cathode performance, achieving a capacity of up 80 mA h g(sup-1). On the basis of our characterization results, three reasons are suggested for the twin performance of the material: the highly uniform dispersion of LMO nanoparticles, the improved Li diffusion kinetics, and the synergic effect between the spinel LMO nanoparticles and the N-rGO.enNitrogen-doped reduced graphene oxideLithium manganese oxideOxygen reduction reactionLi-oxygen batterLi-ion batterySpinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin BatteryArticleLeng, L., Zeng, X., Song, H., Shu, T., Wang, H., Ren, J., & Liao, S. (2019). Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery. http://hdl.handle.net/10204/11397Leng, L, X Zeng, H Song, T Shu, H Wang, Jianwei Ren, and S Liao "Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery." (2019) http://hdl.handle.net/10204/11397Leng L, Zeng X, Song H, Shu T, Wang H, Ren J, et al. Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery. 2019; http://hdl.handle.net/10204/11397.TY - Article AU - Leng, L AU - Zeng, X AU - Song, H AU - Shu, T AU - Wang, H AU - Ren, Jianwei AU - Liao, S AB - Seeking to design high-efficiency catalyst (LMO@N-rGO) for Li-O(sub2) batteries, we suggested a onestep hydrothermal strategy to grow well-crystallized spinel LiMn(sub2)O(sub4) (LMO) nanoparticles homogeneously on nitrogendoped reduced graphene oxide nanosheets (N-rGO). We found that the prepared material can yield a twin-function battery, functioning as a Li-O(sub2) (air) battery under the oxygen atmosphere and a Li-ion battery in the absence of oxygen. In the Li-O(sub2) configuration, the material displayed a lower charge plateau voltage for 0.21 V and excellent cycling performance (120 cycles at 1000 mA h g(sup-1) limited capacity). Furthermore, in the absence of oxygen, the material exhibited very good Li-ion battery cathode performance, achieving a capacity of up 80 mA h g(sup-1). On the basis of our characterization results, three reasons are suggested for the twin performance of the material: the highly uniform dispersion of LMO nanoparticles, the improved Li diffusion kinetics, and the synergic effect between the spinel LMO nanoparticles and the N-rGO. DA - 2019 DB - ResearchSpace DP - CSIR KW - Nitrogen-doped reduced graphene oxide KW - Lithium manganese oxide KW - Oxygen reduction reaction KW - Li-oxygen batter KW - Li-ion battery LK - https://researchspace.csir.co.za PY - 2019 SM - 2168-0485 T1 - Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery TI - Spinel LiMn2O4 Nanoparticles Grown in Situ on Nitrogen-Doped Reduced Graphene Oxide as an Efficient Cathode for a Li-O2/Li-Ion Twin Battery UR - http://hdl.handle.net/10204/11397 ER -