Effect of bifunctional additive potassium nitrate on performance of anode free lithium metal battery in carbonate electrolyte

Sahalie, Niguse Aweke; Assegie, Addisu Alemayehu; Su, Wei‐Nien; Wondimkun, Zewdu Tadesse; Jote, Bikila Alemu; Thirumalraj, Balamurugan; Huang, Chen‐Jui; Yang, Yichuan; Hwang, Bing‐Joe

doi:10.1016/j.jpowsour.2019.226912

Cited by 102 publications

(73 citation statements)

References 58 publications

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“…A strongest peak at 404.2 eV is observed, which corresponds to LiNO 2 . [ 23,30 ] Two weak peaks at 401.2 and 398.2 eV are shown, which are related to the characteristic signals of LiN x O y and Li 3 N, respectively. [ 24,30,31 ] A moderate peak located at 407.8 eV can be indexed to LiNO 3 .…”

Section: Resultsmentioning

confidence: 99%

A Salt‐in‐Metal Anode: Stabilizing the Solid Electrolyte Interphase to Enable Prolonged Battery Cycling

Wang

et al. 2021

Adv Funct Materials

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Metallic lithium (Li) is the ultimate anode candidate for high-energy-density rechargeable batteries. However, its practical application is hindered by serious problems, including uncontrolled dendritic Li growth and undesired side reactions. In this study a concept of "salt-in-metal" is proposed, and a Li/LiNO 3 composite foil is constructed such that a classic electrolyte additive, LiNO 3 , is embedded successfully into the bulk structure of metallic Li by a facile mechanical kneading approach. The LiNO 3 reacts with metallic Li to generate Li + conductive species (e.g., Li 3 N and LiN x O y ) over the entire electrode. These derivatives afford a stable solid electrolyte interphase (SEI) and effectively regulate the uniformity of the nucleation/growth of Li on initial plating, featuring a low nucleation energy barrier and large crystalline size without mossy morphology. Importantly, these derivatives combined with LiNO 3 can in-situ repair the damaged SEI from the large volume change during Li plating/stripping, enabling a stable electrode-electrolyte interface and suppressing side reactions between metallic Li and electrolyte. Stable cycling with a high capacity retention of 93.1% after 100 cycles is obtained for full cells consisting of high-loading LiCoO 2 cathode (≈20 mg cm −2 ) and composite metallic Li anode with 25 wt% LiNO 3 under a lean electrolyte condition (≈12 µL) at 0.5 C.

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Section: Resultsmentioning

confidence: 99%

A Salt‐in‐Metal Anode: Stabilizing the Solid Electrolyte Interphase to Enable Prolonged Battery Cycling

Wang

et al. 2021

Adv Funct Materials

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“…The use of KNO 3 enabled more favorable nucleation and growth of lithium metal during charge, allowing for 40% capacity retention after 50 cycles (LIRR = 98.2%). [ 49 ] The initial lithium stripping capacity was 1.7 mAh cm −2 , and the current rate was 0.2 mA cm −2 . The same group also reported a dual electrolyte additive strategy consisting of KPF 6 and tris (trimethylsilyl) phosphite, which moderately enhanced capacity retention compared to a control cell in Cu||NMC full cells.…”

Section: Strategies For Improving Performance Of Anode‐free Full Cellsmentioning

confidence: 99%

Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Nanda

Gupta

Manthiram

2020

Advanced Energy Materials

334

294

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The development of high‐energy density batteries is critical to the decarbonization of the transportation and power generation sectors. For any given lithium‐containing cathode system, the anode‐free full cell configuration, which eliminates excess lithium and pairs the fully lithiated cathode with a bare current collector, can deliver the maximum possible energy density. The absence of free lithium metal during cell assembly confers significant practical advantages as well. It is also the ideal framework for developing a thorough understanding of lithium deposition in conjunction with various cathode systems. However, the poor efficiencies of lithium plating and stripping lead to rapid lithium inventory loss and poor cycle life. In the last few years, multiple studies have demonstrated the application of advanced electrolytes, modified current collectors, and optimized formation and cycling parameters to stabilize lithium deposition and improve cycle life (80% capacity retention) to 100 cycles and beyond. This review provides an overview of the various strategies toward sustaining lithium inventory in anode‐free full cells and summarizes the work undertaken in this nascent field. It is expected that further improvement upon these strategies and a combinatorial approach can enable cycle lives far in excess of what has been achieved so far.

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“…Li metal is recognized as one of perfect anodes for LIBs owing to its lowest reduction potential (−3.04 V vs. the standard hydrogen potential electrode) and ultrahigh theoretical specific capacity (3,860 mAh g −1 ) (Xu et al, 2014;Yang et al, 2015;Lin et al, 2017;Xue et al, 2019b). Nevertheless, working risks come from the uncontrolled Li dendrites formation and side-reactions of highly active Li with the electrolyte, which will induce Li metal batteries (LMBs) short circuit (Aurbach et al, 2002;Qian et al, 2015;Takeda et al, 2016;Yan et al, 2016;Guo et al, 2017;Sahalie et al, 2019). To settle these problems, great efforts have been devoted to improve the stability of Li metal anode.…”

Section: Introductionmentioning

confidence: 99%

Lithiophilic Silver Coating on Lithium Metal Surface for Inhibiting Lithium Dendrites

Zuo

Zhuang

et al. 2020

Front. Chem.

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Li metal batteries (LMBs) are known as the ideal energy storage candidates for the future rechargeable batteries due to the high energy density. However, uncontrolled Li dendrites growing during charge/discharge process causes extremely low coulombic efficiency and short lifespan. In this work, a thin lithiophilic layer of Ag was coated on the bare Li surface via a thermal evaporation method, which alleviated volume variations and suppressed Li dendrites growth during cycling. As a result, a long lifespan of 250 h at a current density of 1 mA cm −2 was achieved in the symmetric cell when using the Ag-modified Li foil (Ag@Li). The LiFePO 4 |Li full cell demonstrated an excellent cycling performance with a high specific capacity of 131 mAh g −1 even after 300 cycles at 0.5 C. This study offers a suitable method for stabilizing Li metal anodes in LMBs.

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Effect of bifunctional additive potassium nitrate on performance of anode free lithium metal battery in carbonate electrolyte

Cited by 102 publications

References 58 publications

A Salt‐in‐Metal Anode: Stabilizing the Solid Electrolyte Interphase to Enable Prolonged Battery Cycling

A Salt‐in‐Metal Anode: Stabilizing the Solid Electrolyte Interphase to Enable Prolonged Battery Cycling

Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Lithiophilic Silver Coating on Lithium Metal Surface for Inhibiting Lithium Dendrites

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