Manipulating Molecular Structure and Morphology to Invoke High‐Performance Sodium Storage of Copper Phosphide. Issue 19 (6th April 2020)

• Record Type: Journal Article
• Authors: Hu, Zhe; Liu, Qiannan; Lai, Weihong; Gu, Qinfen; Li, Lin; Chen, Mingzhe; Wang, Wanlin; Chou, Shu‐Lei; Liu, Yong; Dou, Shi‐Xue
• Is Part Of: Advanced energy materials. Volume 10:Issue 19(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-04-06
• Subjects: anode materials -- copper phosphide -- molecular and morphology engineering -- sodium ion batteries; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201903542
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: Copper is used as current collector in rechargeable ion batteries due to its outstanding electronic conductivity and low cost. The intrinsic inactivity of copper, however, makes it a poor candidate for an electrode material without further structural modification. To fully utilize its high electronic conductivity, herein, the incorporation of heterogeneous phosphorus combined with building a unique 3D hollow structure is proposed. The as‐prepared copper phosphide hollow nanocubes deliver a stable capacity of 325 mAh·g −1 at 50 mA·g −1 and fast charging and discharging via pseudocapacitance behavior. The outstanding electrochemical performance is attributed to the synergetic effects of high electronic conductivity of copper and the high sodium storage capability of phosphorus. In addition, this facile synthesis method is also easily scaled up for practical applications. Thus, copper phosphide is a promising anode material for sodium ion batteries. Abstract : Double shelled Cu3 P hollow nanocubes are synthesized through a facile solution method and phosphorization treatment. The ultrathin shells and hollow structure provide plenty of active sites to accelerate redox reactions and many voids to buffer large volume change, leading to outstanding cycle life and rate capability.