Perovskite La0.6Sr0.4Co0.2Fe0.8O3 as an effective electrocatalyst for non-aqueous lithium air batteries

Cheng, Junfang; Zhang, Ming; Jiang, Yinlai; Zou, Lu; Gong, Yingpeng; Chi, Bo; Pu, Jian; Li, Jian

doi:10.1016/j.electacta.2016.01.058

Cited by 53 publications

(43 citation statements)

References 47 publications

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“…Furthermore, Figure illustrates the possible performance enhancement mechanism by Fe and Mn doping in terms of crystal structure. When doping in LSC crystal structure, Fe with two valence states can bring more oxygen vacancies [Equation ], as discussed in our previous work

true Fe 0false \binom{X}{Fe} + normalO 0false \binom{X}{O} \vec{\leftarrow} Fe^{'}_{Fe} + normalV^{•}_{O} + 1 / 2 normalO_{2}

…”

Section: Resultsmentioning

confidence: 99%

“…While for LABs with pure SP cathode, the peaks of Li 2 O 2 at about 32.8°, 35°, and 58.5° are still detected after recharge process (Figure d). The result is quite similar with the findings of other researchers obtained in a high‐purity oxygen atmosphere . The batteries are measured in ambient air here and the products are much more varied and complicated.…”

Section: Resultsmentioning

confidence: 99%

“…After stirring for 5 h, the precursor solution was heated at 110 °C for 5 h to form gels, while it was placed into draught cabinet overnight to obtain dry gels. The gels were calcined at 350 °C for 4 h and then at 650–750 °C for 3 h to obtain final LSC, LSCF, and LSCM powders …”

Section: Methodsmentioning

confidence: 99%

“…When doping in LSC crystal structure, Fe with two valence states can bring more oxygen vacancies [Equation (1)],asd iscussed in our previous work. [32] Fe…”

Section: Dopinge Ffect Of Fe and Mnmentioning

confidence: 99%

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Aprotic Lithium–Air Batteries Tested in Ambient Air with a High‐Performance and Low‐Cost Bifunctional Perovskite Catalyst

et al. 2018

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Aprotic lithium–air batteries (LABs) with remarkably high energy density are facing some challenges, including insufficient cycle stability, high‐cost for applications, and unclear understanding about the mechanism. Seeking high‐performance and low‐cost catalysts is one of the effective solutions to resolve these problems. Perovskite oxide La0.6Sr0.4CoO3 (LSC) together with Fe and Mn doped materials La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) and La0.6Sr0.4Co0.2Mn0.8O3 (LSCM) are prepared and applied as catalysts for LABs, which have been previously studied mostly in a pure oxygen atmosphere and rarely in ambient air. The results show that these catalysts are effective for LABs, and LSCF can improve the capacity and cycle number to 6027 mA h g−1 and 156 at current density of 400 mA g−1 in ambient air. The reasons for performance degradation of LABs tested in ambient air are discussed by EIS spectra and products analysis, which also clarifies the reason for improvement of the LSCF catalyst.

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true Fe 0false \binom{X}{Fe} + normalO 0false \binom{X}{O} \vec{\leftarrow} Fe^{'}_{Fe} + normalV^{•}_{O} + 1 / 2 normalO_{2}

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…When doping in LSC crystal structure, Fe with two valence states can bring more oxygen vacancies [Equation (1)],asd iscussed in our previous work. [32] Fe…”

Section: Dopinge Ffect Of Fe and Mnmentioning

confidence: 99%

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Aprotic Lithium–Air Batteries Tested in Ambient Air with a High‐Performance and Low‐Cost Bifunctional Perovskite Catalyst

et al. 2018

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“…Then the obtained samples are heated in different temperatures to form perovskite phase . The traditional perovskite La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) nanoparticles were synthesized by sol‐gel method in our previous reports …”

Section: Figurementioning

confidence: 99%

Efficiency of 3D‐Ordered Macroporous La_0.6Sr_0.4Co_0.2Fe_0.8O₃ as an Electrocatalyst for Aprotic Li‐O₂ Batteries

et al. 2019

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Li‐O 2 batteries (LOBs) with an extremely high theoretical energy density have been reported to be the most promising candidates for future electric storage systems. Porous catalysts can be beneficial for LOBs. Herein, 3D‐ordered macroporous La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 perovskite oxides (3D‐LSCF) are applied as cathode catalysts in LOBs. With a high Brunauer‐Emmett‐Teller surface area (21.8 m 2 g −1 ) and unique honeycomb‐like macroporous structure, the 3D‐LSCF catalysts possess a much higher efficiency than La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) nanoparticles. The unique 3D‐ordered macropores play a significant role in the product deposition as well as oxygen and electrolyte transmission, which are crucial for the discharge‐charge processes of LOBs.

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Li–Air Battery: Electrocatalysts

Zhou

Zhang

2018

Metal‐Air Batteries

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Perovskite La0.6Sr0.4Co0.2Fe0.8O3 as an effective electrocatalyst for non-aqueous lithium air batteries

Cited by 53 publications

References 47 publications

Aprotic Lithium–Air Batteries Tested in Ambient Air with a High‐Performance and Low‐Cost Bifunctional Perovskite Catalyst

Aprotic Lithium–Air Batteries Tested in Ambient Air with a High‐Performance and Low‐Cost Bifunctional Perovskite Catalyst

Efficiency of 3D‐Ordered Macroporous La_0.6Sr_0.4Co_0.2Fe_0.8O₃ as an Electrocatalyst for Aprotic Li‐O₂ Batteries

Li–Air Battery: Electrocatalysts

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Perovskite La0.6Sr0.4Co0.2Fe0.8O3 as an effective electrocatalyst for non-aqueous lithium air batteries

Cited by 53 publications

References 47 publications

Aprotic Lithium–Air Batteries Tested in Ambient Air with a High‐Performance and Low‐Cost Bifunctional Perovskite Catalyst

Aprotic Lithium–Air Batteries Tested in Ambient Air with a High‐Performance and Low‐Cost Bifunctional Perovskite Catalyst

Efficiency of 3D‐Ordered Macroporous La0.6Sr0.4Co0.2Fe0.8O3 as an Electrocatalyst for Aprotic Li‐O2 Batteries

Li–Air Battery: Electrocatalysts

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Product

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About

Efficiency of 3D‐Ordered Macroporous La_0.6Sr_0.4Co_0.2Fe_0.8O₃ as an Electrocatalyst for Aprotic Li‐O₂ Batteries