Enhanced ionic conductivity and electrochemical capacity of lithium ion battery based on PVDF-HFP/HDPE membrane

Biodegradable polymer electrolyte utilization on lithium ion battery is increasingly considered to prevent any waste. This study was conducted to synthesis cellulose acetate from oil palm empty fruit bunch and its properties as polymer electrolyte membranes on lithium ion battery. This study was done by extracting cellulose from oil palm empty fruit bunch. That cellulose was acetylated become cellulose acetate and characterized its functional group. Further, polymer electrolyte was synthesized with composition 25/60/15(%b/b) (SAS/PEO/LiClO4). The properties of polymer electrolyte membranes were characterized by analysis thermal properties, ionic conductivity and mechanical properties. Based on functional group data, synthetic cellulose acetate had similar the main functional group with commercial cellulose acetate. Synthetic cellulose acetate contained 27% acetyl with 1,4 substitution degree. Analysis thermal properties showed that the decomposition of SAS/PEO/LiClO4 polymer electrolyte membranes was started above 260oC. The ionic conductivity 10,81 x 10-4 S/cm of these polymer electrolyte membranes was 10,81 x 10-4 S/cm. Analysis of mechanic properties were 0,05 MPa stress, 14,23 MPa elongation and 0,35 MPa Modulus Young. SAS/PEO/LiClO4 polymer electrolyte membranes had higher ionic conductivity than SAK/PEO/LiClO4 polymer electrolyte membranes. However, SAS/PEO/LiClO4 polymer electrolyte membranes had lower thermal and mechanic properties than SAK/PEO/LiClO4 polymer electrolyte membranes.

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Ultrahigh Capacity Retention of Li2ZrO3-Coated Ni-rich LNCM811 Cathode Material through Covalent Interfacial Engineering

10.22541/au.161516504.48018130/v1 ◽

2021 ◽

Author(s):

Zhangxian Chen ◽

Qiuge Zhang ◽

Weijian Tang ◽

Zhaoguo Wu ◽

Juxuan Ding ◽

...

Keyword(s):

Cathode Material ◽

Lithium Ion Battery ◽

Cathode Materials ◽

High Capacity ◽

Lithium Ion ◽

Side Reaction ◽

Capacity Retention ◽

Interfacial Engineering ◽

Electrochemical Capacity ◽

Electrochemical Cycling

Nickel-rich LiNiCoMnO (LNCM811) is a promising lithium-ion battery cathode material, whereas the surface-sensitive issues (i.e., side reaction and oxygen loss) occurring on LNCM811 particles significantly degrade their electrochemical capacity retentions. A uniform LiZrO coating layer can effectively mitigate the problem by preventing these issues. Instead of the normally used weak hydrogen-bonding interaction, we present a covalent interfacial engineering for the uniform LiZrO coating on LiNiCoMnO materials. Results indicate that the strong covalent interactions between citric acid and NiCoMn(OH) precursor effectively promote the adsorption of ZrO coating species on NiCoMn(OH) precursor, which is eventually converted to uniform LiZrO coating layers of about 7 nm after thermal annealing. The uniform LiZrO coating endows LNCM811 cathode materials with an exceptionally high capacity retention of 98.7% after 300 cycles at 1 C. This work shows the great potential of covalent interfacial engineering for improving the electrochemical cycling capability of Ni-rich lithium-ion battery cathode materials.

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Study on ionic conductivity of polymer electrolyte plasticized with PEG–aluminate ester for rechargeable lithium ion battery

Solid State Ionics ◽

10.1016/j.ssi.2006.01.049 ◽

2006 ◽

Vol 177 (9-10) ◽

pp. 843-846 ◽

Cited By ~ 29

Author(s):

Y MASUDA ◽

M SEKI ◽

M NAKAYAMA ◽

M WAKIHARA ◽

H MITA

Keyword(s):

Ionic Conductivity ◽

Lithium Ion Battery ◽

Polymer Electrolyte ◽

Lithium Ion

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Ionic conductivity enhancement in gel polymer electrolyte membrane with N-methyl-N-butyl-piperidine-bis(trifluoromethylsulfonyl) imide ionic liquid for lithium ion battery

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2016.05.011 ◽

2016 ◽

Vol 502 ◽

pp. 130-138 ◽

Cited By ~ 18

Author(s):

Y. Ma ◽

L.B. Li ◽

G.X. Gao ◽

X.Y. Yang ◽

J. You ◽

...

Keyword(s):

Ionic Liquid ◽

Ionic Conductivity ◽

Lithium Ion Battery ◽

Polymer Electrolyte ◽

Polymer Electrolyte Membrane ◽

Gel Polymer Electrolyte ◽

Lithium Ion ◽

Conductivity Enhancement ◽

Electrolyte Membrane

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Ionic and electronic conductivities of atomic layer deposition thin film coated lithium ion battery cathode particles

RSC Advances ◽

10.1039/c6ra20829k ◽

2016 ◽

Vol 6 (101) ◽

pp. 98768-98776 ◽

Cited By ~ 8

Author(s):

Rajankumar L. Patel ◽

Jonghyun Park ◽

Xinhua Liang

Keyword(s):

Thin Film ◽

Life Cycle ◽

Ionic Conductivity ◽

Atomic Layer Deposition ◽

Lithium Ion Battery ◽

Lithium Ion ◽

Atomic Layer ◽

Layer Deposition ◽

Electronic Conductivities ◽

Improved Performance

The ionic and electronic conductivities of ceria ALD-coated and uncoated LiMn2O4 and LiMn1.5Ni0.5O4 samples were studied. The ionic conductivity of the ceria films resulted in the improved performance and longer life cycle of the CeO2 ALD-coated samples.

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