活性位點(diǎn)的電子結(jié)構(gòu)對于電化學(xué)反應(yīng)至關(guān)重要。因此,山東大學(xué)王建軍團(tuán)隊(duì)報(bào)道了一種通過 P摻雜獨(dú)立調(diào)控Ni0.75Fe0.25Se2中Fe電子結(jié)構(gòu)的簡便方法,從而實(shí)現(xiàn)高效電催化OER。P摻雜P-Ni0.75Fe0.25Se2顯著提高催化劑的電導(dǎo)率,從而促進(jìn)OER過程中電荷轉(zhuǎn)移。P摻雜增加了活性位點(diǎn)的數(shù)量,促進(jìn)了電催化OER。另外,P-Ni0.75Fe0.25Se2的位點(diǎn)對OH*中間體的吸附能力增強(qiáng),這更有利于OER反應(yīng)。P-Ni0.75Fe0.25Se2還能夠降低OER過程中動(dòng)力學(xué)勢壘,進(jìn)一步促進(jìn)了電催化OER。P-Ni0.75Fe0.25Se2具有優(yōu)異的電催化析氧反應(yīng)(OER)性能,在堿性溶液中,電流密度為10 mA cm-2和100 mA cm-2時(shí),過電位分別是185 mV和238 mV。另外,其還具有優(yōu)異的耐久性。P-Ni0.75Fe0.25Se2在500 mV的過電位下獲得了328.19 A g-1的質(zhì)量活度和0.18 s-1的周轉(zhuǎn)頻率(TOF),遠(yuǎn)高于Ni0.75Fe0.25Se2和RuO2。Highly efficient oxygen evolution reaction enabled by phosphorus doping of the Fe electronic structure in iron-nickel selenide nanosheets. Advanced Science, 2021. DOI: 10.1002/advs.202101775