Advanced Materials, том 34, издание 27, номер публикации: 2200924

Sr‐Doped Superionic Hydrogen Glass: Synthesis and Properties of SrH 22

Chen Wuhao 2
Huang Xiaoli 2
Zhou Di 1
Kruglov Ivan A. 3, 4
Mazitov Arslan B. 3, 4
Galasso Michele 1
Tantardini Christian 5, 6
Gonze Xavier 1, 7
Cui Tian 2, 8
State Key Laboratory of Superhard Materials College of Physics Jilin University Changchun 130012 China
UiT The Arctic University of Norway PO Box 6050 Langnes Troms N‐9037 Norway
European Theoretical Spectroscopy Facility Institute of Condensed Matter and Nanosciences Université Catholique de Louvain Chemin des étoiles 8, bte L07.03.01 Louvain‐la‐Neuve B‐1348 Belgium
School of Physical Science and Technology Ningbo University Ningbo 315211 China
Тип документаJournal Article
Дата публикации2022-06-03
Название журналаAdvanced Materials
Квартиль по SCImagoQ1
Квартиль по Web of ScienceQ1
Импакт-фактор 202132.09
ISSN09359648, 15214095
General Materials Science
Mechanical Engineering
Mechanics of Materials
Краткое описание
Recently, several research groups announced reaching the point of metallization of hydrogen above 400 GPa. Despite a notable progress, detecting superconductivity in compressed hydrogen remains an unsolved problem. Following the mainstream of extensive investigations of compressed metal polyhydrides, here we demonstrate that small doping by strontium leads to a dramatic reduction in the metallization pressure of molecular hydrogen to about 200 GPa. Studying the high-pressure chemistry of the Sr-H system, we observed the formation of several new phases: C2/mSr3 H13 , pseudocubic SrH6 , SrH9 with cubic F43m Sr sublattice, and pseudo tetragonal superionic P1SrH22 , the metal hydride with the highest hydrogen content (96 at. %) discovered so far. High diffusion coefficients of hydrogen in the latter phase DH = 0.2-2.1 × 10-9 m2 /s indicate an amorphous state of the H-sublattice, whereas the strontium sublattice remains solid. Unlike Ca and Y, strontium forms molecular semiconducting polyhydrides, whereas calcium and yttrium polyhydrides are high-TC superconductors with an atomic H sublattice. Discovered SrH22 , a kind of hydrogen sponge, opens a new class of materials with ultra-high content of hydrogen. This article is protected by copyright. All rights reserved.
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1. Semenok D. V. и др. Sr‐Doped Superionic Hydrogen Glass: Synthesis and Properties of SrH 22 // Advanced Materials. 2022. С. 2200924.


DO - 10.1002/adma.202200924

UR -

TI - Sr‐Doped Superionic Hydrogen Glass: Synthesis and Properties of SrH


T2 - Advanced Materials

AU - Semenok, Dmitrii V.

AU - Chen, Wuhao

AU - Huang, Xiaoli

AU - Zhou, Di

AU - Kruglov, Ivan A.

AU - Mazitov, Arslan B.

AU - Galasso, Michele

AU - Tantardini, Christian

AU - Gonze, Xavier

AU - Kvashnin, Alexander G.

AU - Oganov, Artem R.

AU - Cui, Tian

PY - 2022

DA - 2022/04/21

PB - Wiley

SP - 2200924

SN - 0935-9648

SN - 1521-4095

ER -

BibTex |


doi = {10.1002/adma.202200924},

url = {},

year = 2022,

month = {apr},

publisher = {Wiley},

pages = {2200924},

author = {Dmitrii V. Semenok and Wuhao Chen and Xiaoli Huang and Di Zhou and Ivan A. Kruglov and Arslan B. Mazitov and Michele Galasso and Christian Tantardini and Xavier Gonze and Alexander G. Kvashnin and Artem R. Oganov and Tian Cui},

title = {Sr-Doped Superionic Hydrogen Glass: Synthesis and Properties of {SrH}


journal = {Advanced Materials}


Semenok, Dmitrii V., et al. “Sr‐Doped Superionic Hydrogen Glass: Synthesis and Properties of SrH 22.” Advanced Materials, Apr. 2022, p. 2200924. Portico, Crossref,