In situ decoration of CoP/Ti3C2T  composite as efficient electrocatalyst for Li-oxygen battery

Zheng, Xingzi; Yuan, Mengwei; Huang, Xianqiang; Li, Huifeng; Sun, Genban

doi:10.1016/j.cclet.2022.01.045

Cited by 9 publications

(6 citation statements)

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“…candidates for electric vehicles. [1][2][3] During discharging/charging, discharge product Li 2 O 2 can be reversibly formed/decomposed at LOB cathodes. [4,5] Up to now, great development has been achieved in the field of LOBs, however, the commercialization of LOBs has not yet been realized due to the limitations of some technical issues, e.g., high charge overpotential, insufficient discharge capacity, and poor cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Boosting Li–O₂ Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO₄

Zhang

et al. 2023

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Development of efficient and robust cathode catalysts is critical for the commercialization of Li‐O2 batteries (LOBs). Herein, a well‐designed CePO4@N‐P‐CNSs cathode catalyst for LOBs via coupling P‐N site‐rich N, P co‐doped graphene‐like carbon nanosheets (N‐P‐CNSs) with nano‐CePO4 via a novel “in situ derivation” coupling strategy by in situ transforming the P atoms of P‐C sites in N‐P‐CNSs to CePO4 is reported. The CePO4@N‐P‐CNSs exhibit superior bifunctional ORR/OER activity relative to commercial Pt/C‐RuO2 with an overall overpotential of 0.64 V (vs RHE). Moreover, the LOB with CePO4@N‐P‐CNSs as the cathode catalyst delivers a low charge overpotential of 0.67 V (vs Li/Li+), high discharge capacity of 29774 mAh g−1 at 100 mA g−1 and long cycling stability of 415 cycles, respectively. The remarkably enhanced LOB performance is attributable to the in situ derived CePO4 nanoparticles and the P‐N sites in N‐P‐CNSs, which facilitate increased bifunctional ORR/OER activity, promote the rapid and effective decomposition of Li2O2 and inhibit the formation of Li2CO3. This work may provide new inspiration for designing efficient, durable, and cost‐effective cathode catalysts for LOBs.

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Section: Introductionmentioning

confidence: 99%

Boosting Li–O₂ Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO₄

Zhang

et al. 2023

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Section: Transition Metal Modificationmentioning

confidence: 99%

“…growing CoP nanoparticles on the surface and between layers of Ti 3 C 2 T x MXene using a hydrothermal calcination strategy (Figure 13d). [88] The presence of Ti 3 C 2 T x MXene can not only prevent the aggregation of CoP nanoparticles and fully expose the catalytic active site but also significantly improve the accessibility of the electrolyte and promote charge transfer and gas transfer in the electrocatalytic process. The CoP/Ti 3 C 2 T x composite showed high specific discharge capacity, good cycle stability, and low overpotential when utilized in the cathodes of LOBs.…”

Section: Transition Metal Modificationmentioning

confidence: 99%

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Status and Prospects of MXene‐Based Lithium–Oxygen Batteries: Theoretical Prediction and Experimental Modulation

Zheng

Yuan

Zhao

et al. 2023

Advanced Energy Materials

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energy, solar and tidal power, have been investigated in recent years. [2] However, these technologies are easily restricted by the natural environment and geographical location, which have a certain uncontrollability and intermittent supply. [3] Therefore, it is imperative to develop environmentally friendly, advanced, and low-cost energy storage devices to enhance the storage of discontinuous energy. [4] The development of battery technology shows considerable advantages in many energy storage technologies. [5] As a renewable energy storage device, rechargeable batteries show broad application prospects in intelligent electronic devices. [6] Presently, various types of rechargeable batteries, such as Ni-MH batteries, [7] leadacid batteries [8] and Li-ion batteries, [9] have made significant progress and broad application due to their advances in energy density and strong environmental compatibility, as well as their price. [10] Nevertheless, the energy density of conventional Li-ion batteries is limited, which still requires significant improvement. [2,11] To overcome this limitation and extend the service time of mobile electronic devices and the electric vehicles, battery chemistry is rapidly developing, and the newly formed battery system, including lithium-sulfur and Li-O 2 batteries, is expected to achieve higher energy density. [12] As shown in Figure 1, rechargeable LOBs have become promising electrochemical energy storage and conversion devices due to their satisfactory theoretical energy density ≈11 400 Wh kg −1 (calculated based on the pure Li), which was comparable to 12 800 Wh kg −1 of the gasoline. [3,13] Even based on Li 2 O 2 calculation, LOBs had a high specific energy density of 3500 Wh kg −1 . The practical energy density of the LOBs was also close to that of the gasoline, with ≈1700 Wh kg −1 . [13b] As an electrode reactant, oxygen can be directly obtained from the air, which is abundant and inexpensive. Therefore, LOBs have broad prospects for application in energy storage and conversion. [14] Although LOBs have been extensively investigated for several decades and continue to make breakthroughs, they still face various challenges (Figure 2), such as the decomposition of electrolytes, growth of lithium dendrites, parasitic reactions, and slow reaction kinetics, which need to be further explored. [14b,15] LOBs mainly consisted of Li metal anodes, electrolytes and oxygen cathodes. In discharge process, Li metal loses The consumption of fossil fuels has contributed to global warming and other problems. It is urgent to exploit progressive, low-cost, and environmentally friendly energy storage devices with super high energy density. Rechargeable lithium oxygen batteries (LOBs) with a high theoretical energy density (≈11400 Wh kg −1 ) are one of the most promising chemical power supplies. MXenes have recently emerged in energy storage and conversion due to their superior conductivity and adjustable structural properties. Here, this paper summarizes the latest research progress in MXene-based ma...

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“…[15][16][17][18][19][20] The enhancement of the electro-catalytic performance is correlated with the surface active sites and chemical composition of the composite materials. [21][22][23][24] Controlling the morphology, cationic/anionic doping and constructing defects to improve the performance of sulfides are effective strategies. [25][26][27] Although some progress has been made, the thermodynamic instabilities of sulfides in the process of OER has puzzled researchers.…”

Section: Introductionmentioning

confidence: 99%

A corrosion-engineered transition metal multi-anionic interface for efficient electrocatalysis toward overall water splitting

Guo,

Liu,

et al. 2023

New J. Chem.

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In situ decoration of CoP/Ti3C2T composite as efficient electrocatalyst for Li-oxygen battery

Cited by 9 publications

References 38 publications

Boosting Li–O₂ Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO₄

Boosting Li–O₂ Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO₄

Status and Prospects of MXene‐Based Lithium–Oxygen Batteries: Theoretical Prediction and Experimental Modulation

A corrosion-engineered transition metal multi-anionic interface for efficient electrocatalysis toward overall water splitting

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In situ decoration of CoP/Ti3C2T composite as efficient electrocatalyst for Li-oxygen battery

Cited by 9 publications

References 38 publications

Boosting Li–O2 Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO4

Boosting Li–O2 Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO4

Status and Prospects of MXene‐Based Lithium–Oxygen Batteries: Theoretical Prediction and Experimental Modulation

A corrosion-engineered transition metal multi-anionic interface for efficient electrocatalysis toward overall water splitting

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Product

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Boosting Li–O₂ Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO₄

Boosting Li–O₂ Battery Performance via Coupling of P–N Site‐Rich N, P Co‐Doped Graphene‐Like Carbon Nanosheets with Nano‐CePO₄