Development of FeCux/FeS/Graphite Composite Electrode Materials for Iron-Based Alkaline Batteries

Towards the development of a novel bipolar-based battery in aqueous electrolyte: Evaluation of the electrochemical properties of NiCu based hydroxide electrodes fabricated on Ni–mesh and graphite composite current collectors

“…A summary of our findings are as follows: Among different metal dopants (Mn 2+ [36], Mg 2+ [36], Co 2+ [34], Al 3+ [34] and Cu 2+ [35] at different ratios (0.95:0.05; 0.9:0.1; 0.75:0.25 and 0.5:0.5) of Ni: metal dopants (Mn 2+ , Mg 2+ , Co 2+ , Al 3+ and Cu 2+ ) 0.75:0.25 Ni:Cu was found to be the optimal ratio and the best composition in terms of electrochemical performance as reported in our publications [34][35][36]. In one of our in-house studies [33], Fe electrode material was synthesized and evaluated for its electrochemical performance. The study utilized a combination of both Cu and FeS additives plus graphite particles.…”

“…The electrode exhibited superlative cycling stability as it retained 88% (158 mAhg − 1 ) of the initial discharge capacity (180 mAhg − 1 ). This is attributed to the ability of Cu to lower the particle surface energy through its highly conductive network embedded in the electrode [33,44]. There were no noticeable changes in terms of plateau voltages observed between the 1 st , 10 th , 50 th , and the 100 th cycle charge-discharge profiles.…”

“…The Ni 0.75 Cu 0.25 (OH) 2 material was synthesized using analytical grade materials, the in-house FeCu 0.25 was used as the anode electrode material [33]. Ni-mesh was obtained from Q-Lite Batteries in China, and the modified graphite substrate was obtained from Fraunhofer Umsicht (Germany).…”

“…In an attempt to mitigate the aforementioned downsides of Ni-Fe batteries, in our previous studies, the active materials for both the anode [33] and cathode [34][35][36] were optimized. A summary of our findings are as follows: Among different metal dopants (Mn 2+ [36], Mg 2+ [36], Co 2+ [34], Al 3+ [34] and Cu 2+ [35] at different ratios (0.95:0.05; 0.9:0.1; 0.75:0.25 and 0.5:0.5) of Ni: metal dopants (Mn 2+ , Mg 2+ , Co 2+ , Al 3+ and Cu 2+ ) 0.75:0.25 Ni:Cu was found to be the optimal ratio and the best composition in terms of electrochemical performance as reported in our publications [34][35][36].…”