Bifunctional TiN@N-doped-graphene catalyst based high sulfur content cathode for reversible Aluminum-Sulfur batteries

Ai, Yuanfei; Wu, Shu-Chi; Zhang, Fan; Zhang, Xiaowei; Li, Renjie; Lan, Yingying; Cai, Lejuan; Wang, Wenlong

doi:10.1016/j.ensm.2022.03.019

Cited by 21 publications

(21 citation statements)

References 23 publications

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Section: Challenges For the Development Of A Reliable Positive Electr...mentioning

confidence: 99%

“…As far as we know, all reports about Ca-S cells have exploited simple sulfur–carbon composites at the positive side by applying mesoporous carbon materials . On the contrary, in the case of Al-S systems, where the shuttle effect of PS is remarkable, the majority of publications have exploited sulfur host structures based, for example, on activated carbon, MOFs, M-Xenes, and doped graphene . Ai et al developed a TiN@N-doped graphene catalyst for use as the sulfur cathode in Al-S batteries, which suppressed the Al-PS shuttle effect, improved the redox kinetics, and reduced the decomposition barrier, being able to deliver ∼993 mAh g –1 in the first cycle and to maintain a capacity of ∼500 mAh g –1 after 200 cycles (see Figure e) .…”

Section: Challenges For the Development Of A Reliable Positive Electr...mentioning

confidence: 99%

“…37 On the contrary, in the case of Al-S systems, where the shuttle effect of PS is remarkable, the majority of publications have exploited sulfur host structures based, for example, on activated carbon, 48 MOFs, 44 M-Xenes, 68 and doped graphene. 67 Ai et al developed a TiN@N-doped graphene catalyst for use as the sulfur cathode in Al-S batteries, which suppressed the Al-PS shuttle effect, improved the redox kinetics, and reduced the decomposition barrier, being able to deliver ∼993 mAh g −1 in the first cycle and to maintain a capacity of ∼500 mAh g −1 after 200 cycles (see Figure 3e). 67 On the computational side, an extensive DFT study was carried out by Wang et al in order to unravel the anchoring properties of SAC-decorated (SA@Ti 3 C 2 O 2 ) M-Xenes by screening several SAC metals.…”

Section: ■ Challenges For the Development Of A Reliable Positive Elec...mentioning

confidence: 99%

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Aprotic Sulfur–Metal Batteries: Lithium and Beyond

Meggiolaro¹,

Agostini

Brutti

2023

ACS Energy Lett.

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Metal–sulfur batteries constitute an extraordinary research playground that ranges from fundamental science to applied technologies. However, besides the widely explored Li-S system, a remarkable lack of understanding hinders advancements and performance in all other metal–sulfur systems. In fact, similarities and differences make all generalizations highly inconsistent, thus unavoidably suggesting the need for extensive research explorations for each formulation. Here we review critically the most remarkable open challenges that still hinder the full development of metal-S battery formulations, starting from the lithium benchmark and addressing Na, K, Mg, and Ca metal systems. Our aim is to draw an updated picture of the recent efforts in the field and to shed light on the most promising innovation paths that can pave the way to breakthroughs in the fundamental comprehension of these systems or in battery performance.

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Section: Challenges For the Development Of A Reliable Positive Electr...mentioning

confidence: 99%

Section: Challenges For the Development Of A Reliable Positive Electr...mentioning

confidence: 99%

Section: ■ Challenges For the Development Of A Reliable Positive Elec...mentioning

confidence: 99%

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Aprotic Sulfur–Metal Batteries: Lithium and Beyond

Meggiolaro¹,

Agostini

Brutti

2023

ACS Energy Lett.

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“…[ 8,10–12 ] However, most reported Al‐S batteries were driven by the reversible reduction of S, which only deliver low discharge voltages (≈0.4–1.0 V, theoretical voltage is 1.25 V vs Al 3+ /Al) with large voltage hysteresis at room temperature. [ 13–23 ] Therefore, it is of high merit to innovate the Al‐S electrochemistry to significantly lift the discharge voltage for enhanced energy density. [ 12,19 ] The reversible electrochemical oxidation of S with high intrinsic electromotive force can provide such an opportunity.…”

Section: Introductionmentioning

confidence: 99%

High‐Voltage Aluminium‐Sulfur Batteries with Functional Polymer Membrane

Zhang

Chu

Wang

et al. 2022

Adv Funct Materials

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A high-voltage aluminium-sulfur (Al-S) battery is developed by employing the reversible electrochemical oxidation of S, favoring a high discharge voltage of around 1.8 V (vs Al 3+ /Al). The reversible multiple-electron transformation between positive-and negative-valence S compounds is further realized for activating a high-capacity Al-S battery. The formation of sulfur chlorides as charge products of S, including S 2 Cl 2 (l) as the dominant one, has been clearly identified. Benefiting from a functional polymer membrane infiltrated with AlCl 3 /acetamide electrolyte, which can suppress unwanted electrolyte reactions, restrict the shuttling of sulfur chlorides across the separator, and stabilize the Al anode against degradation, the Al-S battery can deliver largely enhanced performance, with a capacity of 861 mAh g −1 , capacity retentions of 92.1%/79.0% within 50/200 cycles, and durability of 490 cycles. The new electrochemistry scenarios shed light on the development of S-based secondary batteries with higher energy densities for future.

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“…2d and Table S2 (ESI †). [5][6][7][8][9][21][22][23][24][25][26][27][28][29] It can be observed that Py-MPG yields a voltage hysteresis identical to the smallest value of the state-ofthe-art Al-S batteries, further highlighting the effectiveness of the mesopore graphene design and surface pyridyl functionalization of the carbon host. Note that no metallic catalyst is involved in Py-MPG and deep eutectic solvent AlCl 3 /AcA is used as an electrolyte instead of ionic liquids, which are important to meet the low cost and eco-friendliness requirements of Al-S batteries.…”

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confidence: 99%