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One-step fabrication of porous GaN crystal membrane and its application in energy storage.

ABSTRACT: Single-crystal gallium nitride (GaN) membranes have great potential for a variety of applications. However, fabrication of single-crystalline GaN membranes remains a challenge owing to its chemical inertness and mechanical hardness. This study prepares large-area, free-standing, and single-crystalline porous GaN membranes using a one-step high-temperature annealing technique for the first time. A promising separation model is proposed through a comprehensive study that combines thermodynamic theories analysis and experiments. Porous GaN crystal membrane is processed into supercapacitors, which exhibit stable cycling life, high-rate capability, and ultrahigh power density, to complete proof-of-concept demonstration of new energy storage application. Our results contribute to the study of GaN crystal membranes into a new stage related to the elelctrochemical energy storage application.

SUBMITTER: Zhang L

PROVIDER: S-EPMC5345049 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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One-step fabrication of porous GaN crystal membrane and its application in energy storage.

Zhang Lei L Wang Shouzhi S Shao Yongliang Y Wu Yongzhong Y Sun Changlong C Huo Qin Q Zhang Baoguo B Hu Haixiao H Hao Xiaopeng X

Scientific reports 20170310

Single-crystal gallium nitride (GaN) membranes have great potential for a variety of applications. However, fabrication of single-crystalline GaN membranes remains a challenge owing to its chemical inertness and mechanical hardness. This study prepares large-area, free-standing, and single-crystalline porous GaN membranes using a one-step high-temperature annealing technique for the first time. A promising separation model is proposed through a comprehensive study that combines thermodynamic the ...[more]

PMID: 28281562

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