Iron-doped nickel-cobalt bimetallic phosphide nanowire hybrids for solid-state supercapacitors with excellent electromagnetic interference shielding

Changlong Du; Gengping Wan; Lihong Wu; Shaohua Shi; Yan Zhang; Zhen Deng; Ying Zhang; Qiyi Wei; Lianrui Li; Guizhen Wang

doi:10.1016/j.jcis.2023.10.068

Iron-doped nickel-cobalt bimetallic phosphide nanowire hybrids for solid-state supercapacitors with excellent electromagnetic interference shielding

J Colloid Interface Sci. 2024 Jan 15;654(Pt A):486-494. doi: 10.1016/j.jcis.2023.10.068. Epub 2023 Oct 17.

Authors

Changlong Du¹, Gengping Wan², Lihong Wu³, Shaohua Shi⁴, Yan Zhang⁵, Zhen Deng⁶, Ying Zhang⁶, Qiyi Wei⁶, Lianrui Li⁷, Guizhen Wang⁸

Affiliations

¹ School of Information and Communication Engineering, Hainan University, Haikou, Hainan 570228, China; Collaborative Innovation Center of Ecological Civilization, Hainan University, Haikou, Hainan 570228, China.
² State Key Laboratory of Marine Resource Utilization in South China Sea, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China; Collaborative Innovation Center of Ecological Civilization, Hainan University, Haikou, Hainan 570228, China. Electronic address: wangengping001@163.com.
³ School of Materials Science and Engineering, Hainan University, Haikou, Hainan 570228, China; Collaborative Innovation Center of Ecological Civilization, Hainan University, Haikou, Hainan 570228, China.
⁴ School of Materials Science and Engineering, Hainan University, Haikou, Hainan 570228, China.
⁵ School of Materials Science and Engineering, Hainan University, Haikou, Hainan 570228, China. Electronic address: zyan@hainanu.edu.cn.
⁶ State Key Laboratory of Marine Resource Utilization in South China Sea, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China.
⁷ State Key Laboratory of Marine Resource Utilization in South China Sea, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China; Collaborative Innovation Center of Ecological Civilization, Hainan University, Haikou, Hainan 570228, China.
⁸ State Key Laboratory of Marine Resource Utilization in South China Sea, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China; School of Materials Science and Engineering, Hainan University, Haikou, Hainan 570228, China; Collaborative Innovation Center of Ecological Civilization, Hainan University, Haikou, Hainan 570228, China. Electronic address: wangguizhen0@hotmail.com.

PMID: 37862800
DOI: 10.1016/j.jcis.2023.10.068

Abstract

The development of flexible and wearable electronics subjects to the limited energy density and accompanying electromagnetic pollution. With a high theoretical specific capacity, nickel-cobalt bimetallic phosphide (NiCoP) is considered to be potential cathode materials for supercapacitor. However, the pristine NiCoP fails to display excellent electrochemical performance due to its inferior rate performance and cycling stability. Herein, we design Fe doped NiCoP nanowire arrays on carbon cloth (Fe-NiCoP/CC) as the cathode for supercapacitors. The introduced Fe doping enable to increase in the electronic conductivity and enhance the adsorption of OH^-, supported by the density functional theory (DFT) analysis. As a result, Fe-NiCoP/CC electrode displays a high areal capacity of 3.18 F cm^-2 at 1 mA cm^-2, superb rate capability (86.3 % capacity retention at 20 mA cm^-2) and outstanding structure stability, superior to the NiCo/CC, FeNiCo/CC, and NiCoP/CC counterparts. Moreover, the assembled Fe-NiCoP/CC||VN/CNT/CC hybrid supercapacitor (HSC) device delivers a high energy density of 176.9 μWh cm^-2 at the power density of 750 μW cm^-2. More importantly, the designed electrodes and assembled HSC device exhibits excellent electromagnetic interference (EMI) shielding performance. This design concept presented in this paper can provide insights into the construction of multifunctional and high-performance flexible electronic devices.

Keywords: Electromagnetic interference shielding; Fe doping; Nickel-cobalt bimetallic phosphide; Supercapacitor; Vanadium nitride.