Polymer binder with high peel strength and application thereof in secondary lithium battery
AssigneeQingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences
InventorsGuanglei Cui, Huanrui Zhang, Peng Wang, Hongxia Xu, Rongxiang Hu
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Abstract
A polymer binder with high peel strength is used in a secondary lithium battery. The polymer binder is obtained by a ring-opening reaction of polyvinylene carbonate by a nucleophile. The polyvinylene carbonate accounts for 10-90% of the total mass of the polymer binder while the nucleophile accounts for 10-90% of the total mass of the polymer binder. The polymer binder has high peel strength (0.02-0.6 N/mm) and high decomposition voltages (4.5-6.0 V), and can be used as an electrode material binder in a secondary lithium battery.
Claims7
A polymer binder obtained by a ring-opening reaction of polyvinylene carbonate by a nucleophile, wherein the polyvinylene carbonate accounts for 10-90% of a total mass of the polymer binder and the nucleophile accounts for 10-90% of the total mass of the polymer binder, and
- the nucleophiles is one or more compound selected from glucosamine, chitosan, amino acid,
- compound, wherein n is 1-2, and m is 0-200;
- X is selected from O, S, and NH, Y is selected from PF6−, BF4−, TFSI−, FSI− or CH3OSO3−, and R1 is selected from H, Me or Et.
Dependencies are inferred from the claim text.