Low dimensional nanostructures of fast ion conducting lithium nitride

Tapia‐Ruiz, Nuria; Gordon, Alexandra G.; Jewell, Catherine M.; Edwards, Hannah; Dunnill, Charles W.; Blackman, James M.; Snape, Colin E.; Brown, Paul; MacLaren, Ian; Baldoni, Matteo; Besley, Elena; Titman, Jeremy J.; Gregory, Duncan H.

doi:10.1038/s41467-020-17951-6

Cited by 23 publications

(18 citation statements)

References 57 publications

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“…By contrast with LiF, Li 3 N not only possesses excellent electronic insulation and interfacial energy but also much smaller Li + diffusion energy barrier (0.007 vs 0.729 eV). [ 32 ] It endows Li 3 N with super ionic conductivity (≈10 −3 S cm −1 at room temperature, comparable to that of liquid electrolyte) [ 33 ] and induces planar and dense Li deposition, [ 34 ] as seen in the results of SEM (Figure 2i,j). For O 1s spectra, the ROCO 2 Li at 530.97 eV dominate the content in these four electrolytes, which is consistent with previous literature using carbonate‐based electrolyte.…”

Section: Resultsmentioning

confidence: 99%

High‐Concentration Additive and Triiodide/Iodide Redox Couple Stabilize Lithium Metal Anode and Rejuvenate the Inactive Lithium in Carbonate‐Based Electrolyte

Wen

Fang

et al. 2022

Adv Funct Materials

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Carbonate-based electrolytes are incompatible with lithium (Li) metal anode because the generated solid electrolyte interphase (SEI) undergoes repeated breakage-repair, resulting in the accumulation of inactive Li including Li + compounds and electrically isolated dead Li 0 in the SEI. Therefore, exploiting a suitable strategy to construct a stable SEI while efficiently rejuvenating the inactive Li capacity is urgent and more thoughtful than just building a stereotyped SEI layer. Herein, an innovative strategy is proposed of high-concentration additive (HCA) of LiNO 3 inspired by (localized) high-concentration electrolyte and inactive Li restoration methodology via triiodide/iodide (I 3 − / I − ) redox couple to improve the compatibility of carbonate-based electrolytes. The HCA of LiNO 3 can maintain the cation-anion aggregates solvation structures in the carbonate-based bulk electrolyte and induce the in situ formation of superior-ionic-conductivity NO 3 − -derived SEI. Moreover, the reversible I 3 − / I − redox couple can further optimize the SEI and constantly rejuvenate the inactive Li including solvent/LiNO 3 -derived Li 2 O, a derivative has almost been acquiescent in LiNO 3 -additive electrolytes, and dead Li 0 into delithiated cathode. Consequently, epitaxy-like planar Li deposition, better reversibility, and higher capacity retention can be realized and are systematically verified by Li||Cu half cells, full cells with excess/limited Li (N/P ratio = 1.5) and anode-free lithium metal batteries.

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Section: Resultsmentioning

confidence: 99%

High‐Concentration Additive and Triiodide/Iodide Redox Couple Stabilize Lithium Metal Anode and Rejuvenate the Inactive Lithium in Carbonate‐Based Electrolyte

Wen

Fang

et al. 2022

Adv Funct Materials

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“…For several decades, it remained the highest Li ionic conductivity measured in a crystal around room temperature. Commercial applications, however, have been hindered by a low electrochemical stability, 0.45 V versus Li + /Li [47]. The β-phase has a similar structure but exhibits another pure Li layer in between each Li 2 N plane.…”

Section: Introductionmentioning

confidence: 99%

“…Commercial applications, however, have been hindered by a low electrochemical stability, 0.45 V versus Li + / Li. 47 The b-phase has a similar structure but exhibits another pure Li layer in between each Li 2 N plane. It conducts ions in its pure Li layer at a rate of 2.085 Â 10 À4 S cm À1 .…”

Section: Introductionmentioning

confidence: 99%

Anharmonic lattice dynamics of superionic lithium nitride

et al. 2022

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“…580 cm −1 (Fig. S11) [ 68 ]. The specific capacity of molten Li in the Li-Ni/Li 3 N-NS@CC is evaluated by galvanostatic charging (Fig.…”

Section: Resultsmentioning

confidence: 99%

Revisiting the Role of Physical Confinement and Chemical Regulation of 3D Hosts for Dendrite-Free Li Metal Anode

Chen

Zhang

et al. 2022

Nano-Micro Lett.

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Lithium metal anode has been demonstrated as the most promising anode for lithium batteries because of its high theoretical capacity, but infinite volume change and dendritic growth during Li electrodeposition have prevented its practical applications. Both physical morphology confinement and chemical adsorption/diffusion regulation are two crucial approaches to designing lithiophilic materials to alleviate dendrite of Li metal anode. However, their roles in suppressing dendrite growth for long-life Li anode are not fully understood yet. Herein, three different Ni-based nanosheet arrays (NiO-NS, Ni3N-NS, and Ni5P4-NS) on carbon cloth as proof-of-concept lithiophilic frameworks are proposed for Li metal anodes. The two-dimensional nanoarray is more promising to facilitate uniform Li+ flow and electric field. Compared with the NiO-NS and the Ni5P4-NS, the Ni3N-NS on carbon cloth after reacting with molten Li (Li-Ni/Li3N-NS@CC) can afford the strongest adsorption to Li+ and the most rapid Li+ diffusion path. Therefore, the Li-Ni/Li3N-NS@CC electrode realizes the lowest overpotential and the most excellent electrochemical performance (60 mA cm−2 and 60 mAh cm−2 for 1000 h). Furthermore, a remarkable full battery (LiFePO4||Li-Ni/Li3N-NS@CC) reaches 300 cycles at 2C. This research provides valuable insight into designing dendrite-free alkali metal batteries.

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Low dimensional nanostructures of fast ion conducting lithium nitride

Cited by 23 publications

References 57 publications

High‐Concentration Additive and Triiodide/Iodide Redox Couple Stabilize Lithium Metal Anode and Rejuvenate the Inactive Lithium in Carbonate‐Based Electrolyte

High‐Concentration Additive and Triiodide/Iodide Redox Couple Stabilize Lithium Metal Anode and Rejuvenate the Inactive Lithium in Carbonate‐Based Electrolyte

Anharmonic lattice dynamics of superionic lithium nitride

Revisiting the Role of Physical Confinement and Chemical Regulation of 3D Hosts for Dendrite-Free Li Metal Anode

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