The development of a highly efficient,cost-effective electrocatalyst is essential to sustainable energy storage and conversion processes.In this work,we report on porous composite microspheres of the oxygen-deficient ...The development of a highly efficient,cost-effective electrocatalyst is essential to sustainable energy storage and conversion processes.In this work,we report on porous composite microspheres of the oxygen-deficient perovskite CaMnO_(3−δ) and carbon nanotubes (δ = 0.23,CMO/CNT),synthesized via co-precipitation with post-hydrothermal treatment as efficient oxygen reduction reaction catalysts for zinc–air batteries.Benefitting from their unique porous spherical structure and synergistic coupling between oxygen-deficient CaMnO_(3−δ) and carbon nanotubes,the composite catalyst CMO/CNT catalyzes the oxygen reduction reaction via a 4-electron pathway with an excellent oxygen reduction reaction activity,representing a new class of low-cost,efficient and durable electrocatalysts for fuel cells and metal–air batteries.展开更多
A photoelectrochemical device for water splitting has been fabricated from a new water stable molecular[Na_(2)Mn_(4)]complex that acts as an in situ precursor towards NaMn_(2)O_(x) nanoparticles under catalytic condit...A photoelectrochemical device for water splitting has been fabricated from a new water stable molecular[Na_(2)Mn_(4)]complex that acts as an in situ precursor towards NaMn_(2)O_(x) nanoparticles under catalytic conditions when immobilized within a conductive PEDOT:PSS/Nafion composite film for optimal electron transport.展开更多
基金supported by the project IMRE/12-2P0503 IMRE/12-2P0504 under the SERC Advanced Energy Storage Research ProgrammeInstitute of Materials Research and Engineering(IMRE),A^(*)STAR,Singapore.The authors are grateful to Koh Xue Qi(IMRE)for TGA measurement.
文摘The development of a highly efficient,cost-effective electrocatalyst is essential to sustainable energy storage and conversion processes.In this work,we report on porous composite microspheres of the oxygen-deficient perovskite CaMnO_(3−δ) and carbon nanotubes (δ = 0.23,CMO/CNT),synthesized via co-precipitation with post-hydrothermal treatment as efficient oxygen reduction reaction catalysts for zinc–air batteries.Benefitting from their unique porous spherical structure and synergistic coupling between oxygen-deficient CaMnO_(3−δ) and carbon nanotubes,the composite catalyst CMO/CNT catalyzes the oxygen reduction reaction via a 4-electron pathway with an excellent oxygen reduction reaction activity,representing a new class of low-cost,efficient and durable electrocatalysts for fuel cells and metal–air batteries.
文摘A photoelectrochemical device for water splitting has been fabricated from a new water stable molecular[Na_(2)Mn_(4)]complex that acts as an in situ precursor towards NaMn_(2)O_(x) nanoparticles under catalytic conditions when immobilized within a conductive PEDOT:PSS/Nafion composite film for optimal electron transport.
