Ion conductive inks and solutions for additive manufacturing of lithium microbatteries

Patent metadata

Field	Value
Publication number	US-10566595-B2
Application number	US-201815983914-A
Country	US
Kind code	B2
Filing date	May 18, 2018
Priority date	Oct 13, 2015
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A separator made of ion conductive ink is produced by additive manufacturing. A micro-battery is produced with the separator made of ion conductive ink located between the battery's anode and cathode. The separator functions to keep the anode and cathode apart and to facilitate the transport of ions to produce an operative micro-battery.

First claim

The invention claimed is:

1. A micro-battery apparatus, comprising:
a battery casing;
an anode electrode connected to said battery casing;
a cathode electrode connected to said battery casing;
a separator in said battery casing connected to said anode electrode and said cathode electrode, said separator made of ion conductive ink, wherein said separator is made of methacrylpropylsulfate (MPS) salts and PEGDA;
a matrix of anode micro-channels in said separator body;
a matrix of cathode micro-channels in said separator body;
an anode material in said anode micro-channels; and
an cathode material in said cathode micro-channels.

2. A micro-battery apparatus, comprising:
a battery casing;
an anode electrode connected to said battery casing;
a cathode electrode connected to said battery casing;

a separator in said battery casing connected to said anode electrode and said cathode electrode, said separator made of ion conductive ink,
wherein said separator is made of methacrylpropylsulfate salts and PEGDA/PEGMA having a

chemical structure;
a matrix of anode micro-channels in said separator body;
a matrix of cathode micro-channels in said separator body;
an anode material in said anode micro-channels; and
an cathode material in said cathode micro-channels.

Assignees

• L Livermore Nat Security Llc

Inventors

• Duoss Eric B
• Campbell Patrick G
• Floyd Iii William C
• Mancini Julie A
• Merrill Matthew
• Sharpe Conner T
• Spadaccini Christopher M
• Stadermann Michael
• Zhu Cheng

Classifications

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• C09D11/52

  Electrically conductive inks · CPC title

• H01M6/40

  Printed batteries {, e.g. thin film batteries} · CPC title

• H01M10/0436 Primary

  Small-sized flat cells or batteries for portable equipment · CPC title