Bromine ion battery

Abstract

The invention provides a bromine ion battery, and belongs to the field of batteries. According to the battery, carbon black is adopted as an intercalation material of bromide ions, ammonium bromide with the concentration of 1-2 mol / L in an ethylene glycol non-aqueous system is adopted as an electrolyte, three coordination metals of zinc, copper or nickel are adopted as the negative electrode material of the bromide ion battery, and a soft package battery is assembled. According to the invention, the bromide ion battery is provided based on the intercalation principle of bromide ions in a carbon material, the bromide ions avoid the defects of toxicity, volatility and the like of elemental bromine, and the safety of the battery is improved. Meanwhile, the carbon black is low in price, so that the cost of the bromine ion battery is reduced, and large-scale popularization is facilitated. The ethylene glycol ammonium bromide electrolyte of a non-aqueous system avoids hydrogen evolution andoxygen evolution reaction, so that the bromine ion battery is stable in circulation, and the characteristic of high theoretical specific capacity of bromine ions is fully exerted. The zinc, the copperand the nickel are used as the negative electrode materials of the bromine ion battery, so that the theoretical basis is provided for the negative electrode research of the non-metal ion battery while the battery cost is reduced.

Description

technical field [0001] The invention relates to the battery field and provides a novel bromide ion battery. Background technique [0002] In recent years, due to the need for large-scale energy storage and the safety and cost of the electrolyte of commercial lithium batteries, the search for new ion batteries has become more and more urgent. Bromine due to higher theoretical specific capacity (335mAh / g Br2 ) are widely used in batteries, such as lithium-bromine, magnesium-bromine batteries and zinc-bromine flow batteries [Yao, X.H., Luo, J.R., Dong, Q. & Wang, D.W. Arechargeable non-aqueous Mg-Br-2battery. Nano Energy 28,440- 446, doi: 10.1016 / j.nanoen.2016.09.003(2016).; Chang, Z. et al. Rechargeable Li / / Br battery: apromising platform for post lithium ion batteries. J Mater Chem A 2, 19444-19450, doi:10.1039 / c4ta04419c(2014).; Lai,Q.Z.,Zhang,H.M.,Li,X.F.,Zhang,L.Q.&Cheng,Y.H.A novel single flow zinc-bromine battery with improved energydensity.J Power Sources 235,1-4,doi:...

AI Technical Summary

Problems solved by technology

Bromine due to higher theoretical specific capacity (335mAh / g Br2 ) are widely used in batteries, such as lithium-bromine, magnesium-bromine batteries and zinc-bromine flow batteries [Yao, X.H., Luo, J.R., Dong, Q. & Wang, D.W. Arechargeable non-aqueous Mg-Br-2battery. Nano Energy 28,440- 446, doi: 10.1016 / j.nanoen.2016.09.003(2016).; Chang, Z. et al. Rechargeable Li / / Br battery: apromising platform for post lithium ion batteries. J Mater Chem A 2, 19444-19450, doi:10.1039 / c4ta04419c(2014).; Lai,Q.Z.,Zhang,H.M.,Li,X.F.,Zhang,L.Q.&Cheng,Y.H.A novel single flow zinc-bromine battery with improved energydensity.J Power Sources 235,1-4,doi: 10.1016 / j.jpowsour.2013.01.193(2013).], but further development is limited due to the toxicity and volatility of bromine

[0003] Bromine ions can perfectly solve this defect. At the same time, most of the applications of bromine in batteries are based on the redox reaction of bromine to improve the performance of batteries. No one has reported batteries based on a single bromine ion intercalation.

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