A novel bifunctional oxygen electrode architecture enabled by heterostructures self-scaffolding for lithium–oxygen batteries

Liang, Xiao; Zhong, Qin; Yi, Jingyu; Dong, Haoyang; Liu, Jinping

doi:10.1016/j.jechem.2020.04.006

Cited by 8 publications

(5 citation statements)

References 45 publications

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“…Two sets of Ni 2p doublets are ascribed to Ni 2p 1/2 (870.7 eV, Ni 2+ ; 874 eV, Ni 3+ ) and Ni 2p 3/2 (853.5 eV, Ni 2+ ; 856.3 eV, Ni 3+ ), respectively. [49,50] After S doping and BP hosting, the Ni valence state becomes lower with a decrease of Ni 3+ /Ni 2+ pairs. This demonstrates that the valence states were reconstructed and electrons transfer from Co to Ni in the NiCoSe|S/BP heterostructure, due to the lower electronic affinity of Co (63.7 kJ mol À1 ) than Ni (112 kJ mol À1 ), and the requirement of electrical neutrality.…”

Section: Phase and Chemical Valence Statesmentioning

confidence: 99%

Interface and M³⁺/M²⁺ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Liang

Lenus

Liu

et al. 2022

Energy & Environ Materials

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The catalyst innovation that aims at noble‐metal‐free substitutes is one key aspect for future sustainable hydrogen energy deployment. In this paper, a nickel cobalt sulfoselenide/black phosphorus heterostructure (NiCoSe|S/BP) was fabricated to realize the highly active and durable water electrolysis through interface and valence dual‐engineering. The NiCoSe|S/BP nanostructure was constructed by in‐situ growing NiCo hydroxide nanosheet arrays on few‐layer BP and subsequently one‐step sulfoselenization by SeS2. Besides the conductive merit of BP substrate, holes in p‐type BP are capable of oxidizing the Co2+ to high‐valence and electron‐accepting Co3+, benefiting the oxygen evolution reaction (OER). Meanwhile, Ni3+/Ni2+ ratio in the heterostructure is reduced to maintain the electrical neutrality, which corresponds to the increased electron‐donating character for boosting hydrogen evolution reaction (HER). As for HER and OER, the heterostructured NiCoSe|S/BP electrocatalyst exhibits small overpotentials of 172 and 285 mV at 10 mA cm−2 (η10) in alkaline media, respectively. And overall water splitting has been achieved at a low cell potential of 1.67 V at η10 with high stability. Molecular sensing and density functional theory (DFT) calculations are further proposed for understanding the rate‐determine steps and enhanced catalytic mechanism. The investigation presents a deep‐seated perception for the electrocatalytic performance enhancement of BP‐based heterostructure.

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Section: Phase and Chemical Valence Statesmentioning

confidence: 99%

Interface and M³⁺/M²⁺ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Liang

Lenus

Liu

et al. 2022

Energy & Environ Materials

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“…目前动力汽车电池中正极材料大部分使用的是镍钴锰三元正极材料, 是一种多元金属氧化物, 这也是锂电池主要回收的部分 [20][21][22] , 根据中国有色金属工业协会锂业分会数据, 2021 年我国正极材料产量约 111.17 万吨, 其中三元材料产量 44.05 吨, 占据较大的市场体量. 镍 [23] 、钴 [24] 和锰 [25] [27] . 基于以上结果可得, 从材料 Li 0.79 MO 到 Li 0.30 MO 再到 Li 0.08 MO, 随着 Li ＋的脱出, 层状结构逐渐消失, 晶体结构转化为氧化镍岩盐相.…”

Section: 引言unclassified

Electrochemical Behaviors of Li_xMO (x=0.79, 0.30, 0.08; M=Ni/Co/Mn) Recycled from Spent Li-ion Batteries as Cathodic Catalyst for Lithium-Oxygen Battery

Zhang¹,

Yang²,

Feng³

et al. 2022

Acta Chimica Sinica

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ACTA CHIMICA SINICA 基于废旧锂电池回收制备 Li x MO (x＝0.79, 0.30, 0.08; M＝Ni/Co/Mn) 材料作为锂-氧气电池正极催化剂的电化学性能研究张爽 a 杨成飞 b 杨玉波 b 冯宁宁* ,b 杨刚* ,a,b ( a 苏州大学材料与化学化工学部苏州 215006) ( b 常熟理工学院江苏省先进材料实验室常熟 215500) 摘要锂-氧气电池因其超高的理论比容量而受到科研界的广泛关注, 但其存在较为严重的充放电极化和较差的循环稳定性等问题, 从而极大地限制其商业化进程. 因此设计出有效的正极催化剂是解决锂-氧气电池面临的这些棘手问题的必要手段. 通过对不同充电状态的废旧锂电池正极进行回收制得三种不同锂含量的多元金属氧化物 LixMO (x＝ 0.79, 0.30, 0.08; M＝Ni/Co/Mn), 并分别用作锂-氧气电池正极催化剂. 系统研究了 LixMO 材料中锂含量及晶体结构对其电化学性能的影响. 电化学测试结果表明, 与 Li0.79MO 和 Li0.08MO 催化剂相比, 基于 Li0.30MO 为正极催化剂的锂-氧气电池在电流密度 100 mA•g -1 和限定容量 800 mAh•g -1 的条件下具有较高的放电比容量(14655.9 mAh•g -1 )、较低的充电电压(3.83 V)和较高的能量转换效率(72.2%). 而且该电池体系在充放电循环 140 圈后充电终止电压仍低于 4.3 V.

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“…[21][22][23] For example, our previous work has reported an efficient nanoarray oxygen catalytic cathode assembled by the self-scaffolding of NiO-NiFe 2 O 4 heterostructure that integrates the ORR catalytic activity of NiO with the OER catalytic activity of NiFe 2 O 4 . [24] It should be specifically noticed that, in the charging process of Li−O 2 batteries, the deposited solid Li 2 O 2 needs to be oxidized under the OER catalyst to release lithium ions and oxygen. Besides the exposition of ORR catalytically active sites, an optimized architecture of composite catalysts should also make sure that the deposited Li 2 O 2 closely contacts OER catalytically active sites.…”

Section: Introductionmentioning

confidence: 99%

A Grafted Hybrid Nanosheet Array Architecture Enables Efficient Bifunctional Oxygen Catalytic Electrodes for Rechargeable Lithium−Oxygen Batteries

Li,

et al. 2023

Advanced Sustainable Systems

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To fully manifest the high energy densities of lithium−oxygen (Li−O2) batteries, bifunctional catalytic cathodes that efficiently facilitate both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are mandatorily required. However, catalysts with intrinsic bifunctional catalytic activities are limited in practice. In addition, the practical utilization rate of oxygen catalytic cathodes is usually lower due to the deposition of insoluble discharge product Li2O2. To address these issues, this work proposes a grafted hybrid nanosheet array architecture to enable efficient bifunctional oxygen catalytic cathodes for Li−O2 batteries. As a demonstration, Co3O4 nanosheet arrays (MnO2−Co3O4@CC) grafted with MnO2 nanosheets are prepared on carbon cloth by facile electrodeposition followed by calcination in air. The mutually perpendicular Co3O4 and MnO2 nanosheets in the grafted architecture enable both the ORR catalytically active site of MnO2 and the OER catalytically active site of Co3O4 easily accessible during repeated cycling. Thus, the synergistic bifunctional catalysis of hybrid MnO2−Co3O4@CC is effectively realized to deliver a high specific capacity of 8115 mA h g−1 and a low overall overpotential of 0.64 V. This work provides a universal and effective approach for fabricating various efficient catalytic electrodes via the facile integration of different nanomaterials on nanoarray architectures.

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A novel bifunctional oxygen electrode architecture enabled by heterostructures self-scaffolding for lithium–oxygen batteries

Cited by 8 publications

References 45 publications

Interface and M³⁺/M²⁺ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Interface and M³⁺/M²⁺ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Electrochemical Behaviors of Li_xMO (x=0.79, 0.30, 0.08; M=Ni/Co/Mn) Recycled from Spent Li-ion Batteries as Cathodic Catalyst for Lithium-Oxygen Battery

A Grafted Hybrid Nanosheet Array Architecture Enables Efficient Bifunctional Oxygen Catalytic Electrodes for Rechargeable Lithium−Oxygen Batteries

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A novel bifunctional oxygen electrode architecture enabled by heterostructures self-scaffolding for lithium–oxygen batteries

Cited by 8 publications

References 45 publications

Interface and M3+/M2+ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Interface and M3+/M2+ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Electrochemical Behaviors of LixMO (x=0.79, 0.30, 0.08; M=Ni/Co/Mn) Recycled from Spent Li-ion Batteries as Cathodic Catalyst for Lithium-Oxygen Battery

A Grafted Hybrid Nanosheet Array Architecture Enables Efficient Bifunctional Oxygen Catalytic Electrodes for Rechargeable Lithium−Oxygen Batteries

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Interface and M³⁺/M²⁺ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Interface and M³⁺/M²⁺ Valence Dual‐Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis

Electrochemical Behaviors of Li_xMO (x=0.79, 0.30, 0.08; M=Ni/Co/Mn) Recycled from Spent Li-ion Batteries as Cathodic Catalyst for Lithium-Oxygen Battery