Strategies Based on Nitride Materials Chemistry to Stabilize Li Metal Anode

Zhu, Yizhou; He, Xingfeng; Mo, Yifei

doi:10.1002/advs.201600517

Cited by 194 publications

(187 citation statements)

References 81 publications

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“…TheN1sspectrum of the SEI film formed in the EC/DEC electrolyte (routine SEI (R-SEI)) reveals an absence of N (Figure 3a). [17,18] In the F1sspectrum, signals corresponding to Li À Fand C À Fat684.5 and 686.8 eV,respectively,are similar in the L-and R-SEI films ( Figure S8), indicating that trace amounts of dissolved CuF 2 contribute little to SEI formation on the Li surface in dilute carbonate electrolytes. [17,18] In the F1sspectrum, signals corresponding to Li À Fand C À Fat684.5 and 686.8 eV,respectively,are similar in the L-and R-SEI films ( Figure S8), indicating that trace amounts of dissolved CuF 2 contribute little to SEI formation on the Li surface in dilute carbonate electrolytes.…”

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confidence: 96%

Lithium Nitrate Solvation Chemistry in Carbonate Electrolyte Sustains High‐Voltage Lithium Metal Batteries

et al. 2018

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The lithium metal anode is regarded as a promising candidate in next-generation energy storage devices. Lithium nitrate (LiNO ) is widely applied as an effective additive in ether electrolyte to increase the interfacial stability in batteries containing lithium metal anodes. However, because of its poor solubility LiNO is rarely utilized in the high-voltage window provided by carbonate electrolyte. Dissolution of LiNO in carbonate electrolyte is realized through an effective solvation regulation strategy. LiNO can be directly dissolved in an ethylene carbonate/diethyl carbonate electrolyte mixture by adding trace amounts of copper fluoride as a dissolution promoter. LiNO protects the Li metal anode in a working high-voltage Li metal battery. When a LiNi Co Al O cathode is paired with a Li metal anode, an extraordinary capacity retention of 53 % is achieved after 300 cycles (13 % after 200 cycles for LiNO -free electrolyte) and a very high average Coulombic efficiency above 99.5 % is achieved at 0.5 C. The solvation chemistry of LiNO -containing carbonate electrolyte may sustain high-voltage Li metal anodes operating in corrosive carbonate electrolytes.

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confidence: 96%

Lithium Nitrate Solvation Chemistry in Carbonate Electrolyte Sustains High‐Voltage Lithium Metal Batteries

et al. 2018

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“…Since no SSE is simultaneously stable at both the reductive potentials of ∼0 V (vs Li) at the negative electrode and at typical positive electrode potentials of ∼4 V, 122 a stable, ionic conducting and selflimiting solid electrolyte interphase (SEI) must be formed, even by artificial means. [123][124][125] Beyond these considerations of electrochemical side reactions, the following discussion aims to provide focus on other key issues that affect interfacial stability.…”

Section: Solid Electrolyte Interfacesmentioning

confidence: 99%

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

552

466

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Solid state electrolyte systems boasting Li + conductivity of >10 mS cm −1 at room temperature have opened the potential for developing a solid state battery with power and energy densities that are competitive with conventional liquid electrolyte systems. The primary focus of this review is twofold. First, differences in Li penetration resistance in solid state systems are discussed, and kinetic limitations of the solid state interface are highlighted. Second, technological challenges associated with processing such systems in relevant form factors are elucidated, and architectures needed for cell level devices in the context of product development are reviewed. Specific research vectors that provide high value to advancing solid state batteries are outlined and discussed. Solid state battery systems are of great interest because of potential benefits in gravimetric and volumetric energy density, operable temperature range, and safety in comparison to traditional liquid electrolyte based systems. However, unresolved fundamental issues remain in the quest to fully understand the behavior of all-solid batteries, especially in the area of electrochemical interfaces.1 There are also a number of significant engineering challenges that require methodical effort to enable a tangible product. Some transitions from academic laboratories to entrepreneurial efforts attempting to overcome these challenges remain unsuccessful in efforts to bring a product to the market.2,3 Vital parameters that require robust understanding from a product development standpoint are material cost, cell lifetime and shelf life, cell energy density on a volumetric and gravimetric basis, operable capabilities for given temperature conditions, and safety. The advantage of energy density remains to be realized in solid state electrolytes (SSEs) since most studies to date utilize thick SSEs or cathodes with low active loading compared to liquid counterparts. 4,5 Furthermore, the desire to use SSEs in conjunction with Li metal anodes requires understanding and managing the morphology of Li metal plating, which can impact volumetric energy density. Operation at both higher and lower temperature compared to conventional technologies is a significant potential advantage of SSE systems. However, reports of solid state cells achieving parity with traditional systems at room temperature or any other temperature do not currently exist. The safety, specifically decreased flammability, of SSE systems is another potential advantage but requires ongoing validation and study.6 Unlike current liquid electrolyte systems, 7 the manufacturability and material component costs of SSEs have not been well characterized, and thus the value of these features will need to be weighed accordingly with any added cost. Operating lifetime of SSEs capturing intrinsic materials parameters such as voltage stability, 8 as well as catastrophic failure modes such as shorting, 9 have been briefly investigated, but in the absence of high energy density electrode formulations and appli...

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“…The porous morphology and significant dead Li formation were observed with further Li plating up to 20 mAh cm −2 (Figure S7, Supporting Information). The different Li plating behavior is attributed to the thermodynamically high stability and low reduction potential of Li 3 N to the Li metal compared to those of Li 2 O …”

Section: Kinetic Parameters Of Bare LI and Li3n@cu Nws–li Electrodes mentioning

confidence: 99%

Copper Nitride Nanowires Printed Li with Stable Cycling for Li Metal Batteries in Carbonate Electrolytes

et al. 2020

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The practical implementation of the lithium metal anode is hindered by obstacles such as Li dendrite growth, large volume changes, and poor lifespan. Here, copper nitride nanowires (Cu3N NWs) printed Li by a facile and low‐cost roll‐press method is reported, to operate in carbonate electrolytes for high‐voltage cathode materials. Through one‐step roll pressing, Cu3N NWs can be conformally printed onto the Li metal surface, and form a Li3N@Cu NWs layer on the Li metal. The Li3N@Cu NWs layer can assist homogeneous Li‐ion flux with the 3D channel structure, as well as the high Li‐ion conductivity of the Li3N. With those beneficial effects, the Li3N@Cu NWs layer can guide Li to deposit into a dense and planar structure without Li‐dendrite growth. Li metal with Li3N@Cu NWs protection layer exhibits outstanding cycling performances even at a high current density of 5.0 mA cm−2 with low overpotentials in Li symmetric cells. Furthermore, the stable cyclability and improved rate capability can be realized in a full cell using LiCoO2 over 300 cycles. When decoupling the irreversible reactions of the cathode using Li4Ti5O12, stable cycling performance over 1000 cycles can be achieved at a practical current density of ≈2 mA cm−2.

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Strategies Based on Nitride Materials Chemistry to Stabilize Li Metal Anode

Cited by 194 publications

References 81 publications

Lithium Nitrate Solvation Chemistry in Carbonate Electrolyte Sustains High‐Voltage Lithium Metal Batteries

Lithium Nitrate Solvation Chemistry in Carbonate Electrolyte Sustains High‐Voltage Lithium Metal Batteries

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Copper Nitride Nanowires Printed Li with Stable Cycling for Li Metal Batteries in Carbonate Electrolytes

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