A cobalt–pyrrole coordination compound as high performance cathode catalyst for direct borohydride fuel cells

Abstract

Co–pyrrole/MPC was synthesized by using pyrrole and cobalt nitrate as nitrogen and metal source, which enabled a higher peak power density than the commercialized 28.6 wt% Pt/XC72 in DBFC.

Fabrication of an anion exchange membrane with textured structure for enhanced performance of direct borohydride fuel cells

“…Direct borohydride fuel cells (DBFCs) are fueled by NaBH 4 solution and have attracted widespread attention owing to their high theoretical capacity (5.67 A h g −1 ), high energy conversion efficiency (91%), and using non-precious catalyst. [1][2][3][4] In DBFCs, the electrochemical reaction occurs on a well-dened threephase boundary. Oxygen molecules react with water molecules and electrons to generate hydroxyl (eqn (1)) with the help of a catalyst on the cathode/membrane interface, which is also known as the three-phase boundary in DBFCs.…”

Heterogenization of Cobalt on Nanostructured Magnetic Covalent Triazine Framework: Effective Catalyst for Buchwald-Hartwig N-Arylation, Reduction, and Oxidation Reactions

“…39 The Co−N peak was observed at 398.9 eV, indicating the efficient electronic metal−support interaction between Co and MCTF (Figure 3c). 40 The O 1s peak is deconvoluted into two peaks and ascribed to Fe−O and C−O binding energies at 530.8 and 532.4 eV, respectively (Figure 3d). 41,42 Here, Fe 3 O 4 NSs are responsible for the Fe−O peak, whereas their interaction with the covalent triazine framework is responsible for the C−O peak.…”

Ni-doped hyperbranched PdCu nanocrystals for efficient electrocatalytic borohydride oxidation

“…Recently, a variety of materials have been extensively investigated for BOR electrocatalysis, such as noble metals (Pt, Au, Pd, and Ag) [19][20][21] and transition metals (Ni, Co, and Cu). [22][23][24] Among them, Pd-based materials are promising candidates for the BOR due to their high catalytic activity and benign stability. [25][26][27] Nevertheless, the active sites of Pd-based catalysts cannot be fully utilized due to the high rate of the parasitic hydrolysis reaction, which impedes access to the active sites.…”