Work

Statistical design and mechanism analysis of cement-based composites as cathodes in seawater dissolved oxygen batteries

Year: 2025

Type: article

Abstract: Efficient utilization of marine resources is pivotal in addressing the growing challenges of energy shortages within marine infrastructure. This study represents the first investigation into the application of cement-based composite materials as cathode electrodes in seawater dissolved oxygen batteries. A six-factor, five-level orthogonal design was employed to systematically explore the synergistic effects of various factors, including carbon materials, catalyst types, water-to-cement ratio, carbon-to-cement ratio, catalyst content, and corrosion inhibitors. The TOPSIS-EWM multi-criteria evaluation method was utilized to identify the optimal formulation from 25 potential combinations, with the top-performing samples being: graphite powder/cement = 0.20, activated carbon/cement = 0.04, w/c = 0.60. The study reveals a complex coupling between the cathode material's microstructure and its macroscopic performance, encompassing electrochemical characteristics, dissolved oxygen adsorption capacity, corrosion resistance, and mechanical strength. These findings provide a solid theoretical foundation and practical engineering solutions for the integration of cement-based cathode materials in marine energy storage systems.

Source: Cement and Concrete Composites

DOI: 10.1016/j.cemconcomp.2025.106401

Authors: Jun Xu, Banghui Chen, Chuanqing Fu, Wei She

Institutions: Jiangsu University of Science and Technology, Zhejiang University of Technology, Southeast University

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $5,120