In situ transformation boosts the pseudocapacitance of CuNi-MOF via cooperative orientational and electronic governing. Issue 6 (3rd June 2023)

• Record Type: Journal Article
• Authors: Chu, Xianyu; Meng, Fanling; Zhang, Wei; Zhang, Lihua; Molin, Sebastian; Jasinski, Piotr; Zheng, Weitao
• Is Part Of: Materials research letters. Volume 11:Issue 6(2023)
• Page Start: 446
• Page End: 453
• Publication Date: 2023-06-03
• Subjects: Metal-organic frameworks -- transformation -- vertically oriented -- electronic configuration modification -- supercapacitors; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2023.2181111
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : The disordered arrangement and thereof inferior conductivity of 2D MOF sheets seriously hinder their practical application. Herein, we propose in situ transformation strategy to architect vertically oriented bimetallic CuNi-MOF as a self-supporting electrode, leading to a decuple high specific capacitance of 1262 C g -1 in comparison with the pristine Ni-MOF powder of 114 C g -1 at 2 A g -1 . DFT calculations reveal that introduction of Cu can modulate the electronic structure of metal centers in the Ni-MOF sheets and optimize electrical conductivity. Our strategy is promising to maximize the utilization of MOF superiorities for optimizing their electrochemical performance. IMPACT STATEMENT: We provide an in situ transformation strategy for synthesizing high-activity oriented bimetallic MOFs derived from vertically oriented Cu(OH)2 nanowires, with which an order of magnitude of performance-improved electrodes were produced for pseudocapacitance.