A Comprehensive Review of Materials with Catalytic Effects in Li–S Batteries: Enhanced Redox Kinetics

Lim, Won‐Gwang; Kim, Seoa; Jo, Changshin; Lee, Jun Young

doi:10.1002/anie.201902413

Cited by 424 publications

(289 citation statements)

References 99 publications

(88 reference statements)

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“…Atomic‐scale electrocatalysts in Li–S batteries are strongly considered to enhance redox kinetics of sulfur conversion, as the atomically dispersed active sites on substrates can maximize the atom‐utilization efficiency for sulfur species modulation and curtail inert dosage in electrodes . Single cobalt and iron atoms coordinated with nitrogen have been explored as electrocatalysts to enhance kinetic conversion from LiPSs to Li 2 S and mitigate LiPS shuttle.…”

Section: Introductionmentioning

confidence: 99%

“…Atomic-scale electrocatalysts in Li-S batteries are strongly considered to enhance redox kinetics of sulfur conversion, as the atomically dispersed active sites on substrates can maximize the atom-utilization efficiency for sulfur species modulation and curtail inert dosage in electrodes. 47 Single cobalt [48][49][50][51] and iron 52,53 atoms coordinated with nitrogen have been explored as electrocatalysts to enhance kinetic conversion from LiPSs to Li 2 S and mitigate LiPS shuttle. However, kinetic understanding of the electrocatalytic capabilities of atomic electrocatalysts for Li-S batteries is rather limited, yet critically important to rational design of high-efficiency electrocatalysts in Li-S batteries.…”

Section: Introductionmentioning

confidence: 99%

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Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

Kong

Chang-xin

et al. 2019

InfoMat

277

170

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Lithium–sulfur (Li–S) batteries have extremely high theoretical energy density that make them as promising systems toward vast practical applications. Expediting redox kinetics of sulfur species is a decisive task to break the kinetic limitation of insulating lithium sulfide/disulfide precipitation/dissolution. Herein, we proposed a porphyrin‐derived atomic electrocatalyst to exert atomic‐efficient electrocatalytic effects on polysulfide intermediates. Quantifying electrocatalytic efficiency of liquid/solid conversion through a potentiostatic intermittent titration technique measurement presents a kinetic understanding of specific phase evolutions imparted by the atomic electrocatalyst. Benefiting from atomically dispersed “lithiophilic” and “sulfiphilic” sites on conductive substrates, the finely designed atomic electrocatalyst endows Li–S cells with remarkable cycling stablity (cyclic decay rate of 0.10% in 300 cycles), excellent rate capability (1035 mAh g−1 at 2 C), and impressive areal capacity (10.9 mAh cm−2 at a sulfur loading of 11.3 mg cm−2). The present work expands atomic electrocatalysts to the Li–S chemistry, deepens kinetic understanding of sulfur species evolution, and encourages application of emerging electrocatalysis in other multielectron/multiphase reaction energy systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

Kong

Chang-xin

et al. 2019

InfoMat

277

170

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“…Recently, transition metal nitride (e.g., TiN, VN, and MoN) have been used as anchoring materials because of the high conductivity and strong chemical adsorption for polysulfides . However, polysulfides transformation and Li 2 S precipitation behaviors were not investigated in these works, which is of great significance for enhancing the utilization of sulfur and improving the energy density of the batteries . Yang et al demonstrated that the TiO 2 ‐TiN heterostructures loaded on the separator possess favorable electrocatalysis ability to accelerate polysulfides transformation .…”

mentioning

confidence: 99%

A Dual‐Functional Conductive Framework Embedded with TiN‐VN Heterostructures for Highly Efficient Polysulfide and Lithium Regulation toward Stable Li–S Full Batteries

et al. 2019

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Lithium-sulfur (Li-S) batteries have been regarded as the most promising candidates as the next-generation energy storage systems because of high theoretical capacities (Li: 3860 mAh g −1 and S: 1675 mAh g −1 ), low mass densities (Li: 0.534 g cm −3Lithium-sulfur (Li-S) batteries are strongly considered as next-generation energy storage systems because of their high energy density. However, the shuttling of lithium polysulfides (LiPS), sluggish reaction kinetics, and uncontrollable Li-dendrite growth severely degrade the electrochemical performance of Li-S batteries. Herein, a dual-functional flexible free-standing carbon nanofiber conductive framework in situ embedded with TiN-VN heterostructures (TiN-VN@CNFs) as an advanced host simultaneously for both the sulfur cathode (S/TiN-VN@CNFs) and the lithium anode (Li/TiN-VN@CNFs) is designed. As cathode host, the TiN-VN@CNFs can offer synergistic function of physical confinement, chemical anchoring, and superb electrocatalysis of LiPS redox reactions. Meanwhile, the well-designed host with excellent lithiophilic feature can realize homogeneous lithium deposition for suppressing dendrite growth. Combined with these merits, the full battery (denoted as S/TiN-VN@ CNFs || Li/TiN-VN@CNFs) exhibits remarkable electrochemical properties including high reversible capacity of 1110 mAh g −1 after 100 cycles at 0.2 C and ultralong cycle life over 600 cycles at 2 C. Even with a high sulfur loading of 5.6 mg cm −2 , the full cell can achieve a high areal capacity of 5.5 mAh cm −2 at 0.1 C. This work paves a new design from theoretical and experimental aspects for fabricating high-energy-density flexible Li-S full batteries.

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“…Lithium–sulfur battery, typically composed of a lithium metal anode and sulfur cathode, is an attractive candidate to replace lithium‐ion battery for its high theoretical capacity (sulfur: 1672 mAh g −1 , lithium metal: 3860 mAh g −1 ), natural abundance, low cost and safety. [ 121 ]…”

Section: Application In Advanced Battery Systemsmentioning

confidence: 99%

Single‐Atom Catalytic Materials for Advanced Battery Systems

2020

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power and energy densities are the imperative units for these cutting-edge energy harvesting and storage. [3] The state-ofthe-art commercial batteries are prepared with graphite anodes and lithium transition-metal oxide cathodes that reversibly intercalate lithium (Li) ions with moderate stability and energy densities. [4] The intrinsic physicochemical properties and ion insertion mechanisms of conventional materials limits the energy capacity of devices, which will not be quantified for unprecedented demand of modern electronics. [5] Other than the insertiontype electrode materials, there exist some conversion-type electrode materials with higher energy storage capability and faster electrochemical conversion dynamics, including transition-metal dichalcogenide (TMD) and silicon materials. [6] TMD materials demonstrate strong chemical interaction and high catalytic effect with active species in batteries, which is critical to suppress shuttle effects and promote conversion kinetics. [7] But lithiation of TMD materials inevitably gives rise to phase transformation and causes severe damage for the structural integrity of electrodes. [8] Silicon materials emerge as promising conversion-type substitute in recent years due to the high theoretical capacity of 4200 mAh g −1 , but silicon materials exit severe volume expansion effect in conversion processes, which will lead to rapid capacity degradation within several cycles. [9] These two typical conversion-type materials are both semiconductor materials with poor conductivity and unsatisfactory structural stability under electrochemical conditions. Construction of composition architectures with carbon materials is a common strategy to address these drawbacks for purpose of increasing conductivity and maintaining structural integrity. [10] Even if some synthetic methods have been deliberately considered and rationally designed, their attractive theoretical capacities have not fully expressed with long-term cycling performances. Thus, novel battery chemistries other than traditional insertion and conversion-type electrode materials need to be developed to address these issues.With the ever-increasing development of material science and engineering, lots of alternative materials with high energy capacities and stabilities have stood out as the electrode materials from the competition with conventional counterparts. For instance, sulfur material-based batteries gives high theoretical Advanced battery systems with high energy density have attracted enormous research enthusiasm with potential for portable electronics, electrical vehicles, and grid-scale systems. To enhance the performance of conversiontype batteries, various catalytic materials are developed, including metals and transition-metal dichalcogenides (TMDs). Metals are highly conductive with catalytic effects, but bulk structures with low surface area result in low atom utilization, and high chemical reactivity induces unfavorable dendrite effects. TMDs present chemical adsorption with active species and ...

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A Comprehensive Review of Materials with Catalytic Effects in Li–S Batteries: Enhanced Redox Kinetics

Cited by 424 publications

References 99 publications

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

A Dual‐Functional Conductive Framework Embedded with TiN‐VN Heterostructures for Highly Efficient Polysulfide and Lithium Regulation toward Stable Li–S Full Batteries

Single‐Atom Catalytic Materials for Advanced Battery Systems

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