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Energy‐storage materials can be assembled directly on the electrodes of a battery using electrochemical methods, this allowing sequential deposition, high structural control, and low cost. Here, a two‐step approach combining electrophoretic deposition (EPD) and cathodic electrodeposition (CED) is demonstrated to fabricate multilayer hierarchical electrodes of reduced graphene oxide (rGO) and mixed transition metal sulfides (NiCoMnSx). The process is performed directly on conductive electrodes applying a small electric bias to electro‐deposit rGO and NiCoMnSx in alternated cycles, yielding an ideal porous network and a continuous path for transport of ions and electrons. A fully rechargeable alkaline battery (RAB) assembled with such electrodes gives maximum energy density of 97.2 Wh kg−1 and maximum power density of 3.1 kW kg−1, calculated on the total mass of active materials, and outstanding …
Publication date: 
1 Apr 2022

Jaime S Sanchez, Zhenyuan Xia, Nagaraj Patil, Rebecca Grieco, Jinhua Sun, Uta Klement, Ren Qiu, Meganne Christian, Fabiola Liscio, Vittorio Morandi, Rebeca Marcilla, Vincenzo Palermo

Biblio References: 
Volume: 18 Issue: 16 Pages: 2106403