Faradaic energy storage device structures and associated techniques and configurations
Embodiments of the present disclosure are directed towards Faradaic energy storage device structures and associated techniques and configurations. In one embodiment, an apparatus includes an apparatus comprising a substrate having a plurality of holes disposed in a surface of the substrate, the plurality of holes being configured in an array of multiple rows and an active material for Faradaic energy storage disposed in the plurality of holes to substantially fill the plurality of holes. Other embodiments may be described and/or claimed.
1. An apparatus for use as an energy storage device in an electronic system, the apparatus comprising:
a substrate having a plurality of holes disposed in the substrate; and
an active material for Faradaic energy storage disposed in the plurality of holes to fill the plurality of holes, the active material to store energy for a component of the electronic system, wherein the active material includes a plurality of discrete particles formed of a pseudo-capacitive material in powder form, an electrically conductive additive mixed with the pseudo-capacitive material, and a binder material.
2. The apparatus of claim 1 , wherein the substrate includes semiconductive material, polymer or metal.
3. The apparatus of claim 2 , wherein the substrate is part of an integrated circuit (IC) assembly.
4. The apparatus of claim 3 , wherein the substrate includes silicon of an IC die.
5. The apparatus of claim 4 , wherein:
the active material is active material of a Faradaic energy storage device;
the IC die includes electronic circuitry; and
the Faradaic energy storage device is operatively coupled with the electronic circuitry and configured to provide energy to the electronic circuitry.
6. The apparatus of claim 1 , wherein:
a dimension across individual openings of the plurality of holes is from 0.1 micron to 200 microns, the dimension being in a direction that is substantially parallel with a plane defined by a surface of the substrate;
the plurality of holes have a depth from 5 microns to 500 microns; and
a pitch between the individual holes of the plurality holes is from 1 micron to 250 microns.
7. The apparatus of claim 1 , wherein the plurality of holes are configured in an array of multiple rows.
8. The apparatus of claim 1 , wherein the active material comprises an active material for a lithium (Li)-ion battery electrode.
9. The apparatus of claim 1 , further comprising:
a barrier liner disposed on material of the substrate in the plurality of holes, wherein the barrier liner includes an electrically conductive material disposed between the material of the substrate and the active material.
10. The apparatus of claim 1 , wherein the active material is a first active material, the apparatus further comprising:
an electrolyte coupled with the first active material; and
a second active material for energy storage coupled with the electrolyte, wherein
the electrolyte is disposed between the first active material and the second active material to conduct ions between the first active material and the second active material, and
the first active material has a standard electrode potential that is different than a standard electrode potential of the second material.
11. The apparatus of claim 10 , wherein:
the electrolyte is disposed on a surface of the substrate and in direct contact with the first active material disposed in at least two holes of the plurality of holes; and
the second active material is disposed on the electrolyte.
12. The apparatus of claim 10 , wherein the plurality of holes is a first plurality of holes, the apparatus further comprising:
a second plurality of holes disposed in the substrate; and
an ion channel disposed between at least a first hole of the first plurality of holes and a second hole of the second plurality of holes, wherein the second active material is disposed in the second hole and the electrolyte is disposed in the ion channel.
13. The apparatus of claim 10 , wherein the substrate is a first substrate and the plurality of holes are a first plurality of holes, the apparatus further comprising:
a second substrate having a second plurality of holes disposed in the second substrate, wherein the second active material is disposed in the second plurality of holes to substantially fill the second plurality of holes.
14. A mobile electronic device comprising:
a housing;
an integrated circuit (IC) die disposed within the housing; and
a Faradaic energy storage device coupled with the IC die to provide energy to the IC die, wherein the Faradaic energy storage device comprises:
a substrate having a plurality of holes disposed in the substrate; and
an active material for Faradaic energy storage disposed in the plurality of holes to fill the plurality of holes, wherein the active material includes a plurality of discrete particles formed of a pseudo-capacitive material in powder form, an electrically conductive additive mixed with the pseudo-capacitive material, and a binder material.
15. The mobile electronic device of claim 14 , further comprising:
a circuit board, wherein the IC die is coupled with the circuit board and wherein the substrate includes material of the IC die.
16. The mobile electronic device of claim 15 , further comprising:
one or more of an antenna, a display, a touchscreen display, a touchscreen controller, a battery, an audio codec, a video codec, a power amplifier, a global positioning system (GPS) device, a compass, a Geiger counter, an accelerometer, a gyroscope, a speaker, or a camera coupled with the circuit board,
wherein the mobile electronic device is one of a laptop, a netbook, a notebook, an ultrabook, a smartphone, a tablet, a personal digital assistant (PDA), an ultra mobile PC, a mobile phone, a digital camera, a portable music player, or a digital video recorder.