Cathode-Supported All-Solid-State Lithium–Sulfur Batteries with High Cell-Level Energy Density

Xu, Ruochen; Yue, Jie; Liu, Sufu; Tu, Jiangping; Han, Fudong; Liu, Ping; Wang, Chunsheng

doi:10.1021/acsenergylett.9b00430

Cited by 166 publications

(150 citation statements)

References 36 publications

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“…Furthermore, when considering the cell‐level energy density of the S/PAN|LCE|Li in this work, the specific gravimetric energy density ( E g ) and the volumetric energy density ( E v ) were calculated according to Equations (S1) and (S2) in the Supporting Information. The calculated E g and E v of the S/PAN|LCE|Li cell amount to 116 Wh kg −1 and 660 Wh L −1 , respectively, which is higher than the most reported solid‐state cells in the literature 50…”

Section: Resultsmentioning

confidence: 60%

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Frerichs

Kolek

et al. 2020

Adv Funct Materials

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Solid‐state lithium–sulfur battery (SSLSB) is attractive due to its potential for providing high energy density. However, the cell chemistry of SSLSB still faces challenges such as sluggish electrochemical kinetics and prominent “chemomechanical” failure. Herein, a high‐performance SSLSB is demonstrated by using the thio‐LiSICON/polymer composite electrolyte in combination with sulfurized polyacrylonitrile (S/PAN) cathode. Thio‐LiSICON/polymer composite electrolyte, which processes high ionic conductivity and wettability, is fabricated to enhance the interfacial contact and the performance of lithium metal anodes. S/PAN is utilized due to its unique electrochemical characteristics: electrochemical and structural studies combined with nuclear magnetic resonance spectroscopy and electron paramagnetic resonance characterizations reveal the charge/discharge mechanism of S/PAN, which is the radical‐mediated redox reaction within the sulfur grafted conjugated polymer framework. This characteristic of S/PAN can support alleviating the volume change in the cathode and maintaining fast redox kinetics. The assembled SSLSB full cell exhibits excellent rate performance with 1183 mAh g−1 at 0.2 C and 719 mAh g−1 at 0.5 C, respectively, and can accomplish 50 cycles at 0.1 C with the capacity retention of 588 mAh g−1. The superior performance of the SSLSB cell rationalizes the construction concept and leads to considerations for the innovative design of SSLSB.

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Section: Resultsmentioning

confidence: 60%

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Frerichs

Kolek

et al. 2020

Adv Funct Materials

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“…The mass ratio of SSEs to cathode sulfur is 2 so that the thicknesses of cathode plate and solid‐state electrolyte layer are roughly equal. [ 167a ] The mole ratio of Li metal anode to sulfur in the cathode is 3, meaning that there is 50% lithium excess to ensure the effective utilization of sulfur. An over‐average specific capacity of 1200 mAh g −1 , about three‐quarters of the theoretical level, is appropriate for evaluating practical pouch cell performance.…”

Section: Cathode Preparationmentioning

confidence: 99%

Toward the Scale‐Up of Solid‐State Lithium Metal Batteries: The Gaps between Lab‐Level Cells and Practical Large‐Format Batteries

Zhao

et al. 2020

Advanced Energy Materials

121

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In addition, LIBs still suffer from high cost, limited durability, and poor safety. [3] As a consequence, an alternative rechargeable battery system is crucial to cope with the growing demands of electric vehicles. [4] The prior demand for a power battery is security. The conventional power batteries suffered from frequent combustion accidents. The ascending voltage of cathodes will lead to stability concerns. Most of the thermal runaway is triggered by the reaction derived from electrodes. [6] The decomposition of cathode materials releases heat and oxygen and will trigger the combustion of flammable organic electrolytes. However, the high-energy cathode is essential for an energy-dense battery. Hence the substitution of conventional organic electrolytes is feasible to both enhance the energy density and battery safety. [5,7] The replacement of organic liquid electrolytes (OLEs) with solid-state electrolytes (SSEs) provides a promising future for the large-scale application of lithium metal batteries (LMBs). SSEs with wide electrochemical stability windows and high modulus possess the potential to enable high-capacity electrode materials and prevent Li dendritic deposition. [8] Besides, the SSEs also possess good thermal stability, which enables a wide operation temperature range and avoid the combustion risk. The introduction of SSEs allows a simplified battery design and minimization of inactive materials, consequently increasing energy density at the cell-level. Moreover, the solid-state electrolytes enable the employment of Li metal anodes, which is considered as the most promising anode for next-generation rechargeable batteries due to its ultrahigh theoretical specific capacity of 3860 mAh g −1 and lowest negative electrochemical potential (−3.04 V vs the standard hydrogen electrode). [9] In conventional organic electrolytes, lithium metal suffers from the unstable solid-state interphase, dendrite penetration, and pulverization issues. [1c,10] The rapid deterioration of LMBs is attributed to the high reactivity of lithium metal. [11] Virtually most conventional OLEs can be reduced at the Li surface, forming unstable solid electrolyte interphase (SEI). During repeated charge-discharge cycles, Li tends to generate dendritic morphology because of nonuniform current/ion distribution. [12] Lithium dendrites normally lead to the fracture and regeneration of SEI, further aggravating the dendrite growth. [12a,13] The The scale-up process of solid-state lithium metal batteries is of great importance in the context of improving the safety and energy density of battery systems. Replacing the conventional organic liquid electrolytes (OLEs) with solid-state electrolytes (SSEs) opens a new path for addressing increasing energy demands. Advanced approaches have been validated in lab-scale cells, but only a few successful results can be applied on the practical scale. Herein, the battery systems enabled by SSEs are briefly reviewed and the difficulties and challenges for both lab-level cells and large-scale batteries from...

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“…26 Bulk Kevlar fiber is not suitable for film processing because it tends to aggregate, which would result in SSE films with undesirable heterogeneities. Several teams have proposed using a non-woven (NW) paper made from aramid fibers as reinforcement for cold pressed SSEs in allsolid-state batteries 27,28 and a similar approach is taken here by replacing bulk Kevlar fiber with an inexpensive NW fiberglass paper. Herein, it is shown that reinforced (Li 2 S) 60 (SiS 2 ) 28 (P 2 S 5 ) 12 glass separators can be fabricated by hot pressing at 330°C and 12 MPa.…”

mentioning

confidence: 99%

Hybrid Li‐S pouch cell with a reinforced sulfide glass solid‐state electrolyte film separator

Yersak

Salvador

Schmidt

et al. 2020

Int J of Appl Glass Sci

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In this paper, sulfide glass electrolyte powder with a nominal composition of (Li 2 S) 60 (SiS 2) 28 (P 2 S 5) 12 is hot pressed at a 330°C and 12 MPa into separator films using non-woven fiberglass reinforcement. The reinforced separator films are 93% dense, bendable, and have an ionic conductivity of 0.7 mS/cm at room temperature. When integrated into hybrid Li-S coin cells with liquid electrolyte, these reinforced glass separators blocked the parasitic polysulfide shuttle sufficiently to enable reversible cycling without LiNO 3 co-salt. Furthermore, the scalability of the reinforced glass separator technology is demonstrated by assembling and testing a hybrid single-layer pouch cell.

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Cathode-Supported All-Solid-State Lithium–Sulfur Batteries with High Cell-Level Energy Density

Cited by 166 publications

References 36 publications

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Toward the Scale‐Up of Solid‐State Lithium Metal Batteries: The Gaps between Lab‐Level Cells and Practical Large‐Format Batteries

Hybrid Li‐S pouch cell with a reinforced sulfide glass solid‐state electrolyte film separator

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