Title:
CATALYST FOR WATER DECOMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/036183
Kind Code:
A1
Abstract:
A catalyst for water decomposition, a preparation method therefor and use thereof. The catalyst for water decomposition is at least one of Li2MSiO4, Li2MTiO4, Li2MGeO4, Li2MSnO4 or Na2MP2O7 which comprise tetrahedral structures in crystals thereof, M being a transition metal. During the catalytic water decomposition, as Li or Na ions are discharged, the crystal structures are structurally rotated or rearranged, such that hydroxyl groups or water molecules absorbed by two adjacent transition metals on the surfaces of the crystals form short hydrogen bonds. Thus, the potential energy for breaking the hydrogen bonds is reduced and O-H bonds can be broken using lower energy; and the transfer of protons is promoted, such that the protons on the surfaces of the crystals can be transferred more quickly. The catalyst reduces the overpotential during water decomposition and increases the catalytic efficiency by forming a unique low energy barrier and double-center catalytic process on the surfaces of crystals.
Inventors:
PAN FENG (CN)
YANG JINLONG (CN)
ZHENG JIAXIN (CN)
XU MING (CN)
XIAO YINGUO (CN)
PENG HAOWEI (CN)
YAN CHAOYI (CN)
MEI ZONGWEI (CN)
YANG LUYI (CN)
YANG JINLONG (CN)
ZHENG JIAXIN (CN)
XU MING (CN)
XIAO YINGUO (CN)
PENG HAOWEI (CN)
YAN CHAOYI (CN)
MEI ZONGWEI (CN)
YANG LUYI (CN)
Application Number:
PCT/CN2017/081649
Publication Date:
March 01, 2018
Filing Date:
April 24, 2017
Export Citation:
Assignee:
UNIV PEKING SHENZHEN GRADUATE SCHOOL (CN)
International Classes:
B01J23/78; B01J23/835; B01J27/185; C01B3/04; C01B13/02; C25B1/04
Foreign References:
| CN106378139A | 2017-02-08 | |||
| CN104852058A | 2015-08-19 | |||
| CN1803608A | 2006-07-19 | |||
| CN102646829A | 2012-08-22 |
Other References:
LAN JIANYUN ET AL.: "Research Progress in Cathode Material Li2MSi04 for Li-ion Battery", BATTERY BIMONTHLY, vol. 42, no. 1, 29 February 2012 (2012-02-29), pages 46 - 49
Attorney, Agent or Firm:
DHC IP ATTORNEYS (CN)
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