title: High performance lithium-sulfur batteries for storing pulsed energy generated by triboelectric nanogenerators.
abstract: Storing pulsed energy harvested by triboelectric nanogenerators (TENGs) from ambient mechanical motion is an important technology for obtaining sustainable, low-cost, and green power. Here, we introduce high-energy-density Li-S batteries with excellent performance for storing pulsed output from TENGs. The sandwich-structured sulfur composites with multi-walled carbon nanotubes and polypyrrole serve as cathode materials that suppress the shuttle effect of polysulfides and thus preserve the structural stability of the cathode during Li-ion insertion and extraction. The charging time and energy storage efficiency of the Li-S batteries are directly affected by the rotation rates of the TENGs. The average storage efficiency of the batteries for pulsed output from TENGs can exceed 80% and even reach 93% at low discharge currents. The Li-S batteries also show excellent rate performance for storing pulsed energy at a high discharge current rate of 5 C. The high storage efficiency and excellent rate capability and cyclability demonstrate the feasibility of storing and exploiting pulsed energy provided by TENGs and the potential of Li-S batteries with high energy storage efficiency for storing pulsed energy harvested by TENGs.
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, P.R. China. songweixing@binn.cas.cn.
authors.forename: Weixing
authors.identifier: 0000-0002-7880-053X
authors.initials: W
authors.lastname: Song
authors.affiliation: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, P.R. China.|School of materials science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China.
authors.forename: Baoheng
authors.initials: B
authors.lastname: Gan
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, P.R. China.
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Liu
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, P.R. China.
authors.forename: Jianxiong
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, P.R. China.
authors.forename: Xihui
authors.initials: X
authors.lastname: Nan
authors.affiliation: School of materials science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China.
authors.forename: Ning
authors.initials: N
authors.lastname: Chen
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing, 100083, P.R. China. sunchunwen@binn.cas.cn.
authors.forename: Chunwen
authors.initials: C
authors.lastname: Sun
authors.affiliation: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China. chenjitao@pku.edu.cn.
authors.forename: Jitao
authors.initials: J
authors.lastname: Chen