scholarly journals A polycarboxylic/ether composite polymer electrolyte via in situ UV-curing for all-solid-state lithium battery

2020 ◽  
Vol 7 (7) ◽  
pp. 200598
Author(s):  
Wenli Wang ◽  
Ziwen Qiu ◽  
Qian Wang ◽  
Xiaoyu Zhou ◽  
Yang Liu ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Polyethylene Oxide ◽  
Lithium Battery ◽  
Oxidation Stability ◽  
Uv Curing ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer ◽  
Composite Electrolyte ◽  
Excellent Stability

A polycarboxylic/ether composite polymer electrolyte derived from two-arm monomer and polyethylene oxide (PEO) was in situ synthesized on the cathode. The composite electrolyte exhibits a high ionic conductivity of 3.6 × 10 −5 S cm –1 , high oxidation stability, excellent stability towards Li metal and makes Li/LiFePO 4 present good cyclic and rate performance at 25°C.

scholarly journals Preparation of Nanocomposite Polymer Electrolyte via In Situ Synthesis of SiO2 Nanoparticles in PEO

Nanomaterials ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 157
Author(s):  
Xinjie Tan ◽  
Yongmin Wu ◽  
Weiping Tang ◽  
Shufeng Song ◽  
Jianyao Yao ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Sio2 Nanoparticles ◽  
In Situ Synthesis ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer ◽  
Nanocomposite Polymer ◽  
Nanocomposite Polymer Electrolyte ◽  
Electrochemical Window ◽  
Ceramic Fillers

Composite polymer electrolytes provide an emerging solution for new battery development by replacing liquid electrolytes, which are commonly complexes of polyethylene oxide (PEO) with ceramic fillers. However, the agglomeration of fillers and weak interaction restrict their conductivities. By contrast with the prevailing methods of blending preformed ceramic fillers within the polymer matrix, here we proposed an in situ synthesis method of SiO2 nanoparticles in the PEO matrix. In this case, robust chemical interactions between SiO2 nanoparticles, lithium salt and PEO chains were induced by the in situ non-hydrolytic sol gel process. The in situ synthesized nanocomposite polymer electrolyte delivered an impressive ionic conductivity of ~1.1 × 10−4 S cm−1 at 30 °C, which is two orders of magnitude higher than that of the preformed synthesized composite polymer electrolyte. In addition, an extended electrochemical window of up to 5 V vs. Li/Li+ was achieved. The Li/nanocomposite polymer electrolyte/Li symmetric cell demonstrated a stable long-term cycling performance of over 700 h at 0.01–0.1 mA cm−2 without short circuiting. The all-solid-state battery consisting of the nanocomposite polymer electrolyte, Li metal and LiFePO4 provides a discharge capacity of 123.5 mAh g−1, a Coulombic efficiency above 99% and a good capacity retention of 70% after 100 cycles.

An in situ -Fabricated Composite Polymer Electrolyte Containing Large-Anion Lithium Salt for All-Solid-State LiFePO4 /Li Batteries

2017 ◽  
Vol 4 (9) ◽  
pp. 2293-2299 ◽  
Author(s):  
Ke-Cheng Huang ◽  
Huan-Huan Li ◽  
Hong-Hong Fan ◽  
Jin-Zhi Guo ◽  
Yue-Ming Xing ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolyte ◽  
Lithium Salt ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer ◽  
Li Batteries

Composite polymer electrolyte based on PEO/Pvdf-HFP with MWCNT for lithium battery applications

2016 ◽  
Author(s):  
P. Pradeepa ◽  
S. Edwinraj ◽  
G. Sowmya ◽  
J. Kalaiselvimary ◽  
K. Selvakumar ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Lithium Battery ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer

scholarly journals Increased Ion Conductivity in Composite Solid Electrolytes With Porous Co3O4 Cuboids

2021 ◽  
Vol 8 ◽  
Author(s):  
Qiongyu Zhou ◽  
Songli Liu ◽  
Shiju Zhang ◽  
Yong Che ◽  
Li-Hua Gan
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer ◽  
Composite Electrolyte ◽  
Base Interaction ◽  
Solid State Batteries ◽  
All Solid State Batteries

Compared with the fagile ceramic solid electrolyte, Li-ion conducting polymer electrolytes are flexible and have better contact with electrodes. However, the ionic conductivity of the polymer electrolytes is usually limited because of the slow segment motion of the polymer. In this work, we introduce porous Co3O4 cuboids to Poly (Ethylene Oxide)-based electrolyte (PEO) to investigate the influence of these cuboids on the ionic conductivity of the composite electrolyte and the performance of the all-solid-state batteries. The experiment results showed the porous cuboid Co3O4 fillers not only break the order motion of segments of the polymer to increase the amorphous phase amount, but also build Li+ continuous migration pathway along the Co3O4 surface by the Lewis acid-base interaction. The Li+ conductivity of the composite polymer electrolyte reaches 1.6 × 10−4 S cm−1 at 30°C. The good compatibility of the composite polymer electrolyte to Li metal anode and LiFePO4 cathode ensures good rate performance and long cycle life when applying in an all-solid-state LiFePO4 battery. This strategy points out the direction for developing the high-conducting composite polymer electrolytes for all-solid-state batteries.

Ion Transport and Lithium Battery Characteristics of a Novel Composite Electrolyte Based on PEO Complexed with Lithium Salt

2013 ◽  
Vol 850-851 ◽  
pp. 28-31
Author(s):  
Chong Zhang ◽  
De Jiang Qi ◽  
Xian Ce Zhang ◽  
Quan Kun Fang ◽  
Sai Jin Wu ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Performance Improvement ◽  
Lithium Salt ◽  
Organic Polymer ◽  
Composite Polymer Electrolyte ◽  
Composite Polymer ◽  
Composite Electrolyte ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Large Improvement

All-solid-state composite polymer electrolyte is a multiphase material that adopted an organic polymer as the main matrix. Performance improvement of electrolyte materials can be achieved by complexation between functional groups from the polymer molecular chain and the ions and, by adjusting the component and proportion of polymer and modified filler. This manuscript presents a new idea for preparation composite polymer electrolyte based on the poly (ethylene oxide). We use scanning electron microscopy (SEM), AC impedance measurements etc. to character the polymer electrolyte and their properties. We observed a very large improvement of ion conductivity by adding appropriate content of dropping fillers.

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