Improving hydrogen storage properties of covalent organic frameworks by substitutional doping
Improving hydrogen storage properties of covalent organic frameworks by substitutional doping
复制标题
通过取代掺杂改善共价有机骨架的储氢性能
DOI:
10.1016/j.ijhydene.2009.10.061
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发表时间:
2010
影响因子:
7.2
通讯作者:
Lixian
中科院分区:
文献类型:
--
作者:
Li;Fen;Zhao;Jijun;Johansson;Boerje;Sun;Lixian
We proposed a possible way of promoting the binding of H2molecules on covalent organic frameworks crystals via substituting the bridge C2O2B rings with different metal-participated rings, which can naturally avoid the clustering of metal atoms. First-principles calculations on both crystalline phase and molecular fragments show that the H2binding energy can be enhanced by a factor of four with regard to the undoped crystal, i.e. reaching about 10kJ/mol. Grand canonical Monte Carlo simulations further confirm that such substitutional doping would improve the room temperature hydrogen storage capacity by a factor of two to three.
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