Improved Performance of All-Solid-State Lithium-Ion Batteries Using Nanosilicon Active Material with Multiwalled-Carbon-Nanotubes as a Conductive Additive

Trevey, James E.; Rason, Kavic W.; Stoldt, Conrad R.; Lee, Se-Hee

doi:10.1149/1.3479551

Cited by 55 publications

(53 citation statements)

References 30 publications

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“…The origin of the interfacial resistance, though still not fully understood, is often attributed to the poor physical interfacial contact, the formation of space charge layers, and/or the formation of interphase layers due to the chemical reactions between the electrolyte and electrode . Although a variety of interfacial processing techniques, such as dynamic pressing, nanosizing, cosintering, screen printing, surface coatings have been attempted to engineer the interfaces between the electrodes and electrolytes, the performances of the solid‐state battery are still much lower than the liquid‐electrolyte based batteries. The limited electrochemical stability of the solid electrolyte is rarely thought to be an issue, since the batteries are cycled within the “wide” stability window of electrolytes measured using the semiblocking electrode …”

Section: Introductionmentioning

confidence: 99%

Electrochemical Stability of Li₁₀GeP₂S₁₂ and Li₇La₃Zr₂O₁₂ Solid Electrolytes

Han

Zhu

et al. 2016

Advanced Energy Materials

855

531

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electrochemical stability window, and (3) chemical compatibility with the anode and cathode. In the past few years, major advances have been achieved in increasing the Li ionic conductivity of the solid electrolytes. The state-of-the-art solid electrolyte materials, such as Li-garnet Li 7 La 3 Zr 2 O 12 (LLZO) and Li 10 GeP 2 S 12 (LGPS) have achieved an ionic conductivity of 10 −3 to 10 −2 S cm −1 , [ 1,2 ] which are comparable to commercial organic liquid electrolytes. The high ionic conductivity in solid electrolytes has ignited the research of all-solid-state Li-ion batteries. After achieving adequate Li ionic conductivity in the solid electrolyte materials, current research efforts turned to enhancing the electrochemical stability of the solid electrolytes and chemical compatibility between the solid electrolytes and electrodes, so that Li metal anode and high voltage cathode materials can achieve higher energy density in all-solid-state Li-ion batteries. To enable the highest voltage output of the solid-state battery by coupling a lithium metal anode with a high voltage cathode material, a very wide electrochemical stability window (0.0-5.0 V) is desired for an ideal solid electrolyte. The electrochemical stability window of solid electrolyte was typically obtained by applying the linear polarization on the Li/solid electrolyte/ inert metal (e.g., Pt) semiblocking electrode. Tested by this method, very wide electrochemical stability windows of 0.0 to 5.0 V were reported for both LGPS and LLZO. [ 2,3 ] However, the electrochemical performances of the bulk-type all-solid-state battery batteries assembled with these solid electrolytes [ 2,4 ] are far worse than the liquid-electrolyte based batteries even though the solid electrolyte has a comparable ionic conductivity to the liquid electrolyte. The high interfacial resistance is often blamed as the main limiting factor for the performance of the solid state battery. [ 5 ] The origin of the interfacial resistance, though still not fully understood, is often attributed to the poor physical interfacial contact, the formation of space charge layers, [ 6 ] and/or the formation of interphase layers due to the chemical reactions between the electrolyte and electrode. [ 7 ] Although a variety of interfacial processing techniques, such as dynamic pressing, [ 8 ] nanosizing, [ 9 ] cosintering, [ 10 ] screen printing, [ 11 ] surface coatings [ 12,13 ] have been attempted to engineer the interfaces between the electrodes and electrolytes, the performances of the solid-state battery are still much lower than the liquidelectrolyte based batteries. The limited electrochemical stabilityThe electrochemical stability window of solid electrolyte is overestimated by the conventional experimental method using a Li/electrolyte/inert metal semiblocking electrode because of the limited contact area between solid electrolyte and inert metal. Since the battery is cycled in the overestimated stability window, the decomposition of the solid electrolyte at the interfaces occurs but has be...

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Section: Introductionmentioning

confidence: 99%

Electrochemical Stability of Li₁₀GeP₂S₁₂ and Li₇La₃Zr₂O₁₂ Solid Electrolytes

Han

Zhu

et al. 2016

Advanced Energy Materials

855

531

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“…Among diverse candidates, much attention has been focused on the sulfide‐based SE including Li 10 GeP 2 S 12 (LGPS), β‐Li 3 PS 4 , Li 7 P 3 S 11 , Li 2 S–P 2 S 5 , and argyrodite Li 6 PS 5 X (X = Cl, Br, and I) due to their high ionic conductivity comparable to that of liquid electrolyte as well as better physical contact with other components compared to the oxide‐based SE . In the case of electronic conductivity, not simply carbon‐based materials such as super P, acetylene black (AB), carbon nanotubes (CNTs), vapor grown carbon nanofiber (VGCF) with 0D or 1D shapes, but also metal‐based materials such as TiN and Ni have been used as a conducting agent in the ABBS's cathode electrode. However, even though the addition of conducting agents can improve the electronic conductivity of the composite cathode by forming electronic percolating pathways, the presence of carbon families is likely responsible for unwanted side reactions including the formation of new insulating layer presumably to reduce thermodynamic instability between the carbon and SE during the initial charging process in the sulfide‐based SE .…”

Section: Introductionmentioning

confidence: 99%

Graphitic Hollow Nanocarbon as a Promising Conducting Agent for Solid‐State Lithium Batteries

Park

et al. 2019

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LIBs) are desirable to significantly increase to fulfill the growing demand for long distance per each charge. For this reason, next generation batteries such as Li-S, Li-O 2 , and Li-metal with exceptional energies have been attracted much attention as potential candidates due to their outstanding performances. [1][2][3][4][5] However, unfortunately, as a substantial amount of electrochemical energy should be stored in a confined volume, these systems are thermodynamically unstable, which could be a risk for safety incidents.In an attempt to overcome these drawbacks, the all-solid-state batteries (ASSBs) with all-solidified components are now considered as a promising next-generation technology beyond state-of-the-art LIBs. [6] The fascinating features of the ASSBs lie in the opportunity of enhancing energy density and surmounting the intrinsic shortcomings of conventional liquid-based batteries, such as electrolyte leakage, flammability, narrow voltage window, and low lithium ion transport number. In other words, the ASSBs are promising systems due to nonvolatile, nonexplosive, and stability up to ≈6.0 V versus Li/Li + . [6][7][8][9][10] In particular, if lithium metal can be employed as an anode material and interfacial stability can be improved, [11,12] it can be possible to achieve high energy and power density. These extraordinary properties of the ASSBs have extensively stimulated scientific and industry communities to the ASSB's research.In order to achieve superior electrochemical performances of the ASSBs, not only improving interfacial stability during the cycling, but balancing both ionic and electronic conductivities of composites is of crucial importance. For instance, while the electronic pathways appear to be more important for the high energy density ASSBs operating at relatively low current density, the sufficient ion transport is a more critical factor at high rate operations for the high power density ASSBs, [13,14] although the cell performances are relatively related to diverse factors such as the operating pressure/temperature, particle size, and composition in the electrode. In terms of enhancement of the ionic conductivity, extensive efforts for developing solid electrolyte (SE) with high ionic conductivity have been conducted for past few decades. Among diverse candidates, much attention has been focused on the sulfide-based SE including Li 10 GeP 2 S 12 (LGPS), [7,15] β-Li 3 PS 4 , [16] Li 7 P 3 S 11 , [17] Li 2 S-P 2 S 5 , [18] and argyrodite All-solid-state batteries (ASSBs) have lately received enormous attention for electric vehicle applications because of their exceptional stability by engaging all-solidified cell components. However, there are many formidable hurdles such as low ionic conductivity, interface instability, and difficulty in the manufacturing process, for its practical use. Recently, carbon, one of the representative conducting agents, turns out to largely participate in side reactions with the solid electrolyte, which finally leads to the formation of insulating sid...

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“…were shown to enhance both capacity and cycling stability by forming a more efficient percolation pathway compared that when larger later active additive particles were used [156][157][158][159][160]. It is also found that the amount of conductive additive can have a profound effect on the cycle life of the electrode, which increases with increasing conductive additive content [161].…”

Section: Electrolyte and Electrode Additivesmentioning

confidence: 90%

Latest development of nanostructured Si/C materials for lithium anode studies and applications

Zhang

et al. 2016

Energy Storage Materials

113

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Silicon anodes for lithium-ion batteries have been extensively explored due to their high capacity, moderate operation potential, environmental friendliness, and high abundance. However, silicon's application as anodes is hindered by its poor capacity retention caused by the large volume change during lithium insertion and desertion process, its intrinsic low conductivity and the formation of unstable solid-electrolyte interphase (SEI) films. Recently, influential improvements have been achieved using different design methods with the purpose of increasing cycle life and increasing charging rate performance. Here, we review such design methods including the rational design of nanostructured silicon, the combination of silicon with different carbonaceous materials including traditional carbons and the utilization of nanocarbons (such as carbon nanotube, graphene and corresponding three dimensional architectures). Meanwhile, we draw the essential reason accounting for the excellent electrochemical performance of those structures. Furthermore, we selectively depict the effects of binder, conductive additives and electrolyte composition, which also play important roles in silicon based battery performance.

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Improved Performance of All-Solid-State Lithium-Ion Batteries Using Nanosilicon Active Material with Multiwalled-Carbon-Nanotubes as a Conductive Additive

Cited by 55 publications

References 30 publications

Electrochemical Stability of Li₁₀GeP₂S₁₂ and Li₇La₃Zr₂O₁₂ Solid Electrolytes

Electrochemical Stability of Li₁₀GeP₂S₁₂ and Li₇La₃Zr₂O₁₂ Solid Electrolytes

Graphitic Hollow Nanocarbon as a Promising Conducting Agent for Solid‐State Lithium Batteries

Latest development of nanostructured Si/C materials for lithium anode studies and applications

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Improved Performance of All-Solid-State Lithium-Ion Batteries Using Nanosilicon Active Material with Multiwalled-Carbon-Nanotubes as a Conductive Additive

Cited by 55 publications

References 30 publications

Electrochemical Stability of Li10GeP2S12 and Li7La3Zr2O12 Solid Electrolytes

Electrochemical Stability of Li10GeP2S12 and Li7La3Zr2O12 Solid Electrolytes

Graphitic Hollow Nanocarbon as a Promising Conducting Agent for Solid‐State Lithium Batteries

Latest development of nanostructured Si/C materials for lithium anode studies and applications

Contact Info

Product

Resources

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Electrochemical Stability of Li₁₀GeP₂S₁₂ and Li₇La₃Zr₂O₁₂ Solid Electrolytes

Electrochemical Stability of Li₁₀GeP₂S₁₂ and Li₇La₃Zr₂O₁₂ Solid Electrolytes