Well-dispersed ultrafine CoFe nanoalloy decorated N-doped hollow carbon microspheres for rechargeable/flexible Zn-air batteries

Bimetallic FeCo−N−C Catalyst for Efficient Oxygen Reduction Reaction

“…The corresponding XPS peaks of Fe, Co, N, O, and C in FeCoÀ NC-9.5 can be observed in Figure S2, indicating the existence of Fe, Co, O, and N in the catalyst. The C 1s spectrum of Fe 1 Co 1 À NC-9.5 is deconvoluted into four peaks at about 289.8, 287.4, 285.5, and 284.7 eV (Figure 2a), which can be assigned to CÀ C, CÀ N, CÀ O, and C=O bonds, respectively [35]. The presence of the CÀ N bond confirms that NC has been successfully obtained, which is conducive to the introduction of defects and thus the highly exposed active sites.…”

Frontiers and Structural Engineering for Building Flexible Zinc–Air Batteries

“…The catalyst layer is typically introduced through ex situ or in situ methods. [133,134] Constructing a flexible cathode via the ex situ method is technically the simplest and usually involves no additional equipment. High-efficiency catalysis can be achieved through the introduction of a variety of catalysts.…”

Theory‐Guided Regulation of FeN4Spin State by Neighboring Cu Atoms for Enhanced Oxygen Reduction Electrocatalysis in Flexible Metal–Air Batteries

“…This performance of the NCAG/FeÀ Cu//Zn battery far surpasses those of relevant solid Zn-air batteries and even liquid ones reported earlier (Table S7 and Figure S45b). [37,47,[58][59][60][61][62][63][64][65][66][67][68][69][70] Notably, when the PANa thickness was compressed by 30 % and 60 %, the solid battery still retained 95 % and 93 % of the maximum power and almost unchanged dischargecharge voltages (Figure S44c and S45c). In addition, when the battery was bended by 90°and 180°, the discharge voltage remained stable at 1.38 V at the current density of 5 mA cm À 2 (Figure S45d).…”