Metallic Porous Iron Nitride and Tantalum Nitride Single Crystals with Enhanced Electrocatalysis Performance

Feiyan Zhang; Shaobo Xi; Guoming Lin; Xiuli Hu; Xiong Wen (David) Lou; Kui Xie

doi:10.1002/adma.201806552

Metallic Porous Iron Nitride and Tantalum Nitride Single Crystals with Enhanced Electrocatalysis Performance

Feiyan Zhang
, Shaobo Xi
, Guoming Lin
, Xiuli Hu
, Xiong Wen (David) Lou^*
, Kui Xie

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

76 Citations (Scopus)

Abstract

Altering a material's catalytic properties would require identifying structural features that deliver electrochemically active surfaces. Single-crystalline porous materials, combining the advantages of long-range ordering of bulk crystals and large surface areas of porous materials, would create sufficient active surfaces by stabilizing 2D active moieties confined in lattice and may provide an alternative way to create high-energy surfaces for electrocatalysis that are kinetically trapped. Here, a radical concept of building active metal–nitrogen moieties with unsaturated nitrogen coordination on a porous surface by directly growing metallic porous metal nitride (Fe 3 N and Ta 5 N 6 ) single crystals at unprecedented 2 cm scale is reported. These porous single crystals demonstrate exceptionally high conductivity of 0.1–1.0 × 10 5 S cm −1 , while the atomic surface layers of the porous crystals are confirmed to be an Fe termination layer for Fe 3 N and a Ta termination layer for Ta 5 N 6 . The unsaturated metal–nitrogen moieties (Fe 6 –N and Ta 5 –N 3 ) with unique electronic structures demonstrate enhanced electrocatalysis performance and durability. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English
Article number	1806552
Journal	Advanced Materials
Volume	31
Issue number	7
DOIs	https://doi.org/10.1002/adma.201806552
Publication status	Published - 15 Feb 2019
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

K.X. acknowledges the funding support by the National Key R&D Program of China (2017YFA0700102), the National Natural Science Foundation of China (91845202; 91545123), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB2000000), and the Natural Science Foundation of Fujian Province (2016J01275).

Research Keywords

active moieties
electrocatalysis
metallic porous crystals
unsaturated coordination

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title = "Metallic Porous Iron Nitride and Tantalum Nitride Single Crystals with Enhanced Electrocatalysis Performance",

abstract = "Altering a material's catalytic properties would require identifying structural features that deliver electrochemically active surfaces. Single-crystalline porous materials, combining the advantages of long-range ordering of bulk crystals and large surface areas of porous materials, would create sufficient active surfaces by stabilizing 2D active moieties confined in lattice and may provide an alternative way to create high-energy surfaces for electrocatalysis that are kinetically trapped. Here, a radical concept of building active metal–nitrogen moieties with unsaturated nitrogen coordination on a porous surface by directly growing metallic porous metal nitride (Fe 3 N and Ta 5 N 6 ) single crystals at unprecedented 2 cm scale is reported. These porous single crystals demonstrate exceptionally high conductivity of 0.1–1.0 × 10 5 S cm −1 , while the atomic surface layers of the porous crystals are confirmed to be an Fe termination layer for Fe 3 N and a Ta termination layer for Ta 5 N 6 . The unsaturated metal–nitrogen moieties (Fe 6 –N and Ta 5 –N 3 ) with unique electronic structures demonstrate enhanced electrocatalysis performance and durability. {\textcopyright} 2018 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

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AU - Xi, Shaobo

AU - Lin, Guoming

AU - Hu, Xiuli

AU - Lou, Xiong Wen (David)

AU - Xie, Kui

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - Altering a material's catalytic properties would require identifying structural features that deliver electrochemically active surfaces. Single-crystalline porous materials, combining the advantages of long-range ordering of bulk crystals and large surface areas of porous materials, would create sufficient active surfaces by stabilizing 2D active moieties confined in lattice and may provide an alternative way to create high-energy surfaces for electrocatalysis that are kinetically trapped. Here, a radical concept of building active metal–nitrogen moieties with unsaturated nitrogen coordination on a porous surface by directly growing metallic porous metal nitride (Fe 3 N and Ta 5 N 6 ) single crystals at unprecedented 2 cm scale is reported. These porous single crystals demonstrate exceptionally high conductivity of 0.1–1.0 × 10 5 S cm −1 , while the atomic surface layers of the porous crystals are confirmed to be an Fe termination layer for Fe 3 N and a Ta termination layer for Ta 5 N 6 . The unsaturated metal–nitrogen moieties (Fe 6 –N and Ta 5 –N 3 ) with unique electronic structures demonstrate enhanced electrocatalysis performance and durability. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - Altering a material's catalytic properties would require identifying structural features that deliver electrochemically active surfaces. Single-crystalline porous materials, combining the advantages of long-range ordering of bulk crystals and large surface areas of porous materials, would create sufficient active surfaces by stabilizing 2D active moieties confined in lattice and may provide an alternative way to create high-energy surfaces for electrocatalysis that are kinetically trapped. Here, a radical concept of building active metal–nitrogen moieties with unsaturated nitrogen coordination on a porous surface by directly growing metallic porous metal nitride (Fe 3 N and Ta 5 N 6 ) single crystals at unprecedented 2 cm scale is reported. These porous single crystals demonstrate exceptionally high conductivity of 0.1–1.0 × 10 5 S cm −1 , while the atomic surface layers of the porous crystals are confirmed to be an Fe termination layer for Fe 3 N and a Ta termination layer for Ta 5 N 6 . The unsaturated metal–nitrogen moieties (Fe 6 –N and Ta 5 –N 3 ) with unique electronic structures demonstrate enhanced electrocatalysis performance and durability. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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KW - electrocatalysis

KW - metallic porous crystals

KW - unsaturated coordination

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Metallic Porous Iron Nitride and Tantalum Nitride Single Crystals with Enhanced Electrocatalysis Performance

Abstract

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