# US 5,700,443 A · Hydrogen storing member and process for storing hydrogen into the hydrogen storing member

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- Number: US 5,700,443 A
- Document ID: US5700443A
- Status: Granted
- Kind: A
- Application number: 08/691,587
- Filed: 1996-08-02
- Granted: 1997-12-23
- Earliest claimed: 1989-08-04
- Assignees: Canon Kabushiki Kaisha
- Inventors: Keisuke Yamamoto; Toshiyuki Komatsu
- Web page: https://patentgrep.com/patent/US5700443A

## CPC

- C01B 3/0078: Composite solid storage media, e.g. mixtures of polymers and metal hydrides, coated solid compounds or structurally heterogeneous solid compounds
- F17C 11/005: {for hydrogen}
- Y02E 30/10: Nuclear fusion reactors
- Y02E 60/32: Hydrogen storage
- Y02P 20/129: Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A hydrogen storing member which comprises at least two kinds of hydrogen storing materials comprising a first hydrogen storing material and a second hydrogen storing material capable of releasing or storing hydrogen in a range of at least one of temperature and pressure at which the first hydrogen storing material is in the .beta. phase having a high capacity for storing hydrogen.

## Claims

### Claim 1

A process for preparing a deuterium storing member containing deuterium, which comprises:
(a) disposing a deuterium storing member in a temperature-controllable vessel, wherein the deuterium storing member comprises a thick first deuterium storing material member generating .beta. phase which is capable of storing deuterium at a first temperature range and generating .beta. phase which is capable of storing deuterium at a second temperature range set at a lower temperature than the first temperature range, a thin film of a second deuterium storing material provided on the thick first deuterium storing material member generating .alpha. phase which is capable of releasing deuterium at the first temperature range and generating .beta. phase which is capable of storing deuterium at the second temperature range set at a lower temperature than the first temperature range, and a thin film of said first deuterium storing material provided on the thin film of the second deuterium storing material generating .beta. phase which is capable of storing deuterium at the first temperature range and generating .beta. phase which is capable of storing deuterium at the second temperature range set at a lower temperature than the first temperature range;
(b) setting the vessel at a temperature within the second temperature range and providing the inside of the vessel with a high pressure deuterium gas atmosphere; and
(c) setting the vessel at a temperature within the first temperature range and providing the inside of the vessel with a high pressure deuterium gas atmosphere.

### Claim 2 (depends on 1)

The process according to claim 1, wherein the deuterium is introduced after light hydrogen is removed from the vessel under vacuum.