Exploring economical,high-efficiency and durable electrocatalysts for the oxygen evolution reaction(OER)is of critical importance for the advancement of sustainable energy conversion technologies,including water elect...Exploring economical,high-efficiency and durable electrocatalysts for the oxygen evolution reaction(OER)is of critical importance for the advancement of sustainable energy conversion technologies,including water electrolysis and metal–air batteries.Compositional manipulation via heteroatom-doping and nanoarchitectural design of Earth-abundant electrocatalysts are extensively established as valid strategies to effectively optimize the electrocatalytic performance due to the electronic modulation and geometric effect.展开更多
The exploration of high-efficiency, cost-effective and Earth-abundant non-noble metal electrocatalysts toward the oxygen evolution reaction (OER) is of vital importance for the advancement of renewable energy conversi...The exploration of high-efficiency, cost-effective and Earth-abundant non-noble metal electrocatalysts toward the oxygen evolution reaction (OER) is of vital importance for the advancement of renewable energy conversion technologies. Herein, we report a feasible one-step hydrothermal method to synthesize Fe-doped Co-tannic acid coordination complex nanoflowers (denoted as Fe_(x)Co_(1-x)-TA nanoflowers). It is experimentally proved that moderate Fe incorporation could effectively generate abundant O vacancies, expose more active sites and modulate the electronic structure, therefore promoting the OER activity. To be specific, the harvested Fe_(0.1)_(5)Co_(0.8)_(5)-TA catalyst with the optimal Fe doping content exhibits an excellent OER performance in an alkaline medium with a low overpotential of 272 mV at 10 mA cm^(-2), a small Tafel slope of 53.9 mV dec^(-1) and a faradaic efficiency of nearly 100%. This cation-doping strategy for the regulation of the electronic structure toward the performance improvement of transition metal coordination complexes is immensely instructive for the future design of affordable and efficient electrocatalysts for various renewable energy conversion systems.展开更多
基金financially supported by the National Natural Science Foundation of China(21972068)the High-level Talents Project of Jinling Institute of Technology(jit-b-202164)the Nantong University Scientific Research Foundation for the Introduced Talents(No.03081220).
文摘Exploring economical,high-efficiency and durable electrocatalysts for the oxygen evolution reaction(OER)is of critical importance for the advancement of sustainable energy conversion technologies,including water electrolysis and metal–air batteries.Compositional manipulation via heteroatom-doping and nanoarchitectural design of Earth-abundant electrocatalysts are extensively established as valid strategies to effectively optimize the electrocatalytic performance due to the electronic modulation and geometric effect.
基金supported by the National Natural Science Foundation of China(21972068,21875112 and 22075290)the State Key Laboratory of Multiphase Complex Systems,the Institute of Process Engineering,Chinese Academy of Sciences(MPCS-2021-A-05)the High-level Talents Project of Jinling Institute of Technology(jit-b-202164).
文摘The exploration of high-efficiency, cost-effective and Earth-abundant non-noble metal electrocatalysts toward the oxygen evolution reaction (OER) is of vital importance for the advancement of renewable energy conversion technologies. Herein, we report a feasible one-step hydrothermal method to synthesize Fe-doped Co-tannic acid coordination complex nanoflowers (denoted as Fe_(x)Co_(1-x)-TA nanoflowers). It is experimentally proved that moderate Fe incorporation could effectively generate abundant O vacancies, expose more active sites and modulate the electronic structure, therefore promoting the OER activity. To be specific, the harvested Fe_(0.1)_(5)Co_(0.8)_(5)-TA catalyst with the optimal Fe doping content exhibits an excellent OER performance in an alkaline medium with a low overpotential of 272 mV at 10 mA cm^(-2), a small Tafel slope of 53.9 mV dec^(-1) and a faradaic efficiency of nearly 100%. This cation-doping strategy for the regulation of the electronic structure toward the performance improvement of transition metal coordination complexes is immensely instructive for the future design of affordable and efficient electrocatalysts for various renewable energy conversion systems.
