高压物理学报2024，Vol.38Issue(4)：1-12,12.DOI:10.11858/gywlxb.20230810
高压下主族金属富氮化合物的结构与含能特性
Structure and Energy Properties of Nitrogen-Rich Compounds of Main Group Metals under High Pressure
摘要
Abstract
Nitrogen is the main component of the Earth's atmosphere,accounting for about 78%by volume.At room temperature and pressure,nitrogen is combined into stable diatomic molecules in the form of triple bonds(N≡N).Under the action of extreme high pressure,nitrogen can dissociate into a solid polynitrogen structure containing double bonds(N=N)or even single bonds(N—N).Due to the huge energy difference between N≡N and N=N or N—N,the transformation process is accompanied by huge energy release,so polynitrogen is a high energy density substance that attracts much attention.However,elemental polymerized nitrogen must be prepared in an environment above millions of atmospheric pressure(100 GPa)which is too harsh,greatly limiting the development and application of such materials.Interestingly,the introduction of metal elements can reduce the reaction barrier and provide chemical pressure,which can effectively reduce the synthetic pressure of polynitrogen and form a rich variety of polynitrogen configurations.This paper focuses on the research progress of main group metal nitriding compounds under high pressure,the physical mechanism of stabilities for metal nitrogen-rich compounds under high pressure,and puts forward the prospect of future design and preparation of new nitrogen-rich compounds.关键词
高压/富氮化合物/高能量密度材料/聚合氮Key words
high pressure/nitrogen-rich compounds/high energy density materials/polynitrogen分类
数理科学引用本文复制引用
翟航,杨锦坭,王建云,李全..高压下主族金属富氮化合物的结构与含能特性[J].高压物理学报,2024,38(4):1-12,12.基金项目
国家自然科学基金(T2325013,52288102,52090024) （T2325013,52288102,52090024）
国家重点研发计划(2021YFA1400503,2018YFA0703404) （2021YFA1400503,2018YFA0703404）
