scholarly journals A free-standing LiFePO4–carbon paper hybrid cathode for flexible lithium-ion batteries

2016 ◽  
Vol 18 (9) ◽  
pp. 2691-2698 ◽  
Author(s):  
Katja Kretschmer ◽  
Bing Sun ◽  
Xiuqiang Xie ◽  
Shuangqiang Chen ◽  
Guoxiu Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbon Paper ◽  
Polymeric Binder ◽  
Free Standing ◽  
Current Collectors ◽  
Cellulose Paper

A shell of LiFePO4nano-crystals was grownin situon carbonized cellulose paper, which can be employed as a cathode in a LIB system with no polymeric binder, conducting additives or metallic current collectors needed.

Directly embedded Ni3S2/Co9S8@S-doped carbon nanofiber networks as a free-standing anode for lithium-ion batteries

2021 ◽  
Vol 5 (1) ◽  
pp. 166-174
Author(s):  
Zizhou He ◽  
Hui Guo ◽  
Jed D. LaCoste ◽  
Ryan A. Cook ◽  
Blake Hussey ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Free Standing

A facile electrospinning strategy to simultaneously and in situ generate Co9S8 and Ni3S2 nanoparticles within S-doped carbon nanofiber matrix as free-standing anode materials for LIBs.

In situ synthesized single-crystalline LiMn2O4 embedded in carbon nanotube films as free-standing cathodes for Li-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 22061-22068 ◽  
Author(s):  
Zhiyu Wang ◽  
Jianli Cheng ◽  
Xiaodong Li ◽  
Wei Ni ◽  
Demao Yuan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Free Standing ◽  
Single Crystalline ◽  
Carbon Nanotube Film ◽  
Binder Free ◽  
Li Ion

Single-crystalline octagonal LiMn2O4 nanoparticles embedded in a carbon nanotube film are synthesized and used as a binder-free and self-standing cathode for lithium ion batteries.

scholarly journals In Situ Preparation of Crosslinked Polymer Electrolytes for Lithium Ion Batteries: A Comparison of Monomer Systems

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1707
Author(s):  
Eike T. Röchow ◽  
Matthias Coeler ◽  
Doris Pospiech ◽  
Oliver Kobsch ◽  
Elizaveta Mechtaeva ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Polymer Electrolytes ◽  
Polymer Networks ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Free Standing

Solid polymer electrolytes for bipolar lithium ion batteries requiring electrochemical stability of 4.5 V vs. Li/Li+ are presented. Thus, imidazolium-containing poly(ionic liquid) (PIL) networks were prepared by crosslinking UV-photopolymerization in an in situ approach (i.e., to allow preparation directly on the electrodes used). The crosslinks in the network improve the mechanical stability of the samples, as indicated by the free-standing nature of the materials and temperature-dependent rheology measurements. The averaged mesh size calculated from rheologoical measurements varied between 1.66 nm with 10 mol% crosslinker and 4.35 nm without crosslinker. The chemical structure of the ionic liquid (IL) monomers in the network was varied to achieve the highest possible ionic conductivity. The systematic variation in three series with a number of new IL monomers offers a direct comparison of samples obtained under comparable conditions. The ionic conductivity of generation II and III PIL networks was improved by three orders of magnitude, to the range of 7.1 × 10−6 S·cm−1 at 20 °C and 2.3 × 10−4 S·cm−1 at 80 °C, compared to known poly(vinylimidazolium·TFSI) materials (generation I). The transition from linear homopolymers to networks reduces the ionic conductivity by about one order of magnitude, but allows free-standing films instead of sticky materials. The PIL networks have a much higher voltage stability than PEO with the same amount and type of conducting salt, lithium bis(trifluoromethane sulfonyl)imide (LiTFSI). GII-PIL networks are electrochemically stable up to a potential of 4.7 V vs. Li/Li+, which is crucial for a potential application as a solid electrolyte. Cycling (cyclovoltammetry and lithium plating-stripping) experiments revealed that it is possible to conduct lithium ions through the GII-polymer networks at low currents. We concluded that the synthesized PIL networks represent suitable candidates for solid-state electrolytes in lithium ion batteries or solid-state batteries.

Graphene intercalated free-standing carbon paper coated with MnO2 for anode materials of lithium ion batteries

2020 ◽  
Vol 348 ◽  
pp. 136310 ◽  
Author(s):  
Jae Hyun Park ◽  
Won Yeong Choi ◽  
Sangmin Lee ◽  
Taek-Soo Kim ◽  
Jae W. Lee
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Paper ◽  
Free Standing
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