Current and future cathode materials for non-aqueous Li-air (O2) battery technology – A focused review

Jung, Ji‐Won; Cho, Su‐Ho; Nam, Jong Seok; Kim, Il‐Doo

doi:10.1016/j.ensm.2019.07.006

Cited by 140 publications

(92 citation statements)

References 132 publications

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“…To extend utilization in smart energy storage, various battery chemistries have been explored. [51][52][53][54][55][56] Lithium-sulfur/oxygen (Li-S/O 2 ) batteries exhibit overwhelming energy density than conventional lithium/ sodium-ion (Li/Na-ion) batteries. [57][58][59][60][61][62][63][64][65] A technical leap in the lithium metal anode has a promise to significantly increase energy density.…”

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Advanced energy materials for flexible batteries in energy storage: A review

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Smart energy storage has revolutionized portable electronics and electrical vehicles. The current smart energy storage devices have penetrated into flexible electronic markets at an unprecedented rate. Flexible batteries are key power sources to enable vast flexible devices, which put forward additional requirements, such as bendable, twistable, stretchable, and ultrathin, to adapt mechanical deformation under the working conditions. This review summarizes the recent advances in construction and configuration of flexible batteries and discusses the general metrics to benchmark various flexible batteries with different materials and chemistries. Moreover, we present advanced prototype flexible batteries developed by some companies to afford general envision of the technological status. Lastly, the critical points are summarized in the development of flexible batteries and remaining challenges are also presented for the future design of flexible batteries in practical perspectives. K E Y W O R D S composite electrode, flexible batteries, smart energy storage, ultrathin batteries, wearable electronics 1 | INTRODUCTION Rechargeable batteries have popularized in smart electrical energy storage in view of energy density, power density, cyclability, and technical maturity. 1-5 A great success has been witnessed in the application of lithium-ion (Li-ion) batteries in electrified transportation and portable electronics, and non-lithium battery chemistries emerge as alternatives in special applications from cost and safety views. 6-10 While energy/power

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confidence: 99%

Advanced energy materials for flexible batteries in energy storage: A review

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“…Rapid developments have been achieved in cathode catalysts, which accelerate sluggish reaction kinetics caused by insulating Li 2 O 2 . [53][54][55] Compared with conventional lithium ion battery, more severe parasitic reactions take place in lithium-oxygen battery thanks to the highly reactive oxygen species generated during discharge process. In addition, higher charge overpotential will cause the decomposition of carbonbased material and some electrolyte to form indissoluble side products and impurity gas (H 2 O, CO 2 ), which further result in parasitic reaction with Li 2 O 2 .…”

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confidence: 99%

Challenges and Strategy on Parasitic Reaction for High‐Performance Nonaqueous Lithium–Oxygen Batteries

Zhang

Ding

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Advanced Energy Materials

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is restricted to their inferior energy densities (≈250 Wh kg −1) due to intercalation chemistry. Consequently, "beyond Li-ion batteries" such as lithium-sulfur batteries and metal-air batteries, which have fundamental discrepant energy storage mechanism, have been attracted worldwide attention recently. [4,5] Of all the candidates, rechargeable lithium-oxygen battery (LOB) is considered to be one of the most fascinating next-generation batteries with extremely high theoretical energy density (≈3500 Wh kg −1). [6,7] The low-cost and environmental positive active material oxygen originates from air, endowing LOBs more attractive to satisfy the soaring demand of large-scale energy storage system. Generally, there are four architecture systems of LOBs determined by different electrolyte: aqueous, nonaqueous, hybrid, and all-solid-state. [8-11] In 1996, Abraham and Jiang first reported the rechargeable lithium-oxygen battery consisted of Li metal anode, solid polymer electrolyte membrane, and composite carbon cathode. [12] After ten years, nonaqueous LOBs actually caught worldwide attention due to the outstanding capacity and reversibility. [6] A typical nonaqueous lithium-oxygen battery comprises a metallic Li anode, organic electrolyte containing Li salt, a separator, and a porous gas diffusion cathode loading with catalysts (Figure 1). [13] Generally, the electrochemical reactions of nonaqueous lithium-oxygen battery can be described as following equations [14-16] Overall reaction E 2Li O Li O 2.96 V vs Li/Li 2 2 2 () + ↔°= + (1) Cathodic process (oxygen reduction reaction (ORR))

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“…Generally,O RR/OER electrocatalysts have been utilized to improve the efficiency of the cathode, of which carbon-based materials have been most studied. [5,8,9] Porous carbon materials have been largely used as electrodes The depletion of fossil fuels, the rapid evolution of the global economy,a nd high living standardsr equiret he development of new energy-storage systems that can meet the needs of the world's population. Metal-oxygen batteries (M = Li, Na) arise, therefore, as promising alternatives to widely used lithium-ion batteries, due to their high theoretical energy density,w hich approaches that of gasoline.A lthough significant progress has been made in recent years, there are still several challenges to overcome to reach the final commercialization of this technology.O ne of the most limiting and challenging factors is the development of bifunctional cathodes towards oxygen reduction and evolution reactions.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Engineered Graphene‐Based Cathodes: Boosting Oxygen Reduction and Evolution Reactions in Lithium– and Sodium–Oxygen Batteries

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The depletion of fossil fuels, the rapid evolution of the global economy, and high living standards require the development of new energy‐storage systems that can meet the needs of the world's population. Metal–oxygen batteries (M=Li, Na) arise, therefore, as promising alternatives to widely used lithium‐ion batteries, due to their high theoretical energy density, which approaches that of gasoline. Although significant progress has been made in recent years, there are still several challenges to overcome to reach the final commercialization of this technology. One of the most limiting and challenging factors is the development of bifunctional cathodes towards oxygen reduction and evolution reactions. In this sense, graphene, which is very promising and tunable, has been widely explored by the research community as a key material for this technology. Herein, a wide literature overview is presented and analyzed with the aim of guiding future research in this field.

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Current and future cathode materials for non-aqueous Li-air (O2) battery technology – A focused review

Cited by 140 publications

References 132 publications

Advanced energy materials for flexible batteries in energy storage: A review

Advanced energy materials for flexible batteries in energy storage: A review

Challenges and Strategy on Parasitic Reaction for High‐Performance Nonaqueous Lithium–Oxygen Batteries

An Overview of Engineered Graphene‐Based Cathodes: Boosting Oxygen Reduction and Evolution Reactions in Lithium– and Sodium–Oxygen Batteries

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