Long‐Cycling Sulfide‐Based All‐Solid‐State Batteries Enabled by Electrochemo‐Mechanically Stable Electrodes

Cao, Daxian; Sun, Xiao; Li, Yejing; Anderson, Alexander; Lu, Wenquan; Zhu, Hongli

doi:10.1002/adma.202200401

Cited by 92 publications

(105 citation statements)

References 48 publications

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“…If the weight of all inactive materials (e.g., SE, and current collectors) is considered realistically, the specific energy is estimated to be less than 50 Wh kg –1 . Cao et al reported sheet-type Si|NCM SSB cells with a material-level specific energy of 285 Wh kg –1 through sandwiching a silicon anode, a thin sulfide SE membrane, and an interface modified NCM811 cathode …”

Section: Full Cells With Silicon Anodesmentioning

confidence: 99%

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Silicon as Emerging Anode in Solid-State Batteries

Huo

Janek

2022

ACS Energy Lett.

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Silicon is one of the most promising anode materials due to its very high specific capacity (3590 mAh g −1 ), and recently its use in solid-state batteries (SSBs) has been proposed. Although SSBs utilizing silicon anodes show broad and attractive application prospects, current results are still in an infant state in terms of electrochemical performance, analytical characterization and mechanistic understanding. This paper aims to summarize current achievements and remaining challenges for the use of silicon anodes in SSBs and to provide a perspective for SSB cells with high energy density. Three types of cells with their specific type of silicon anode (i.e., thin-film cells, powder-pressed pellet-type cells, and sheet-type pouch cells) are reviewed, from their electro-chemo-mechanical behavior to microstructure optimization. Future directions for research of silicon anodes in SSBs are outlined, such as quantifying the partial ionic/ electronic conductivity of silicon anodes, clarifying their interfacial stability, and investigating their chemo-mechanical stability.

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Section: Full Cells With Silicon Anodesmentioning

confidence: 99%

“…(e) Capacity retention of SSB cells with silicon anodes as a function of cycling number. Data points in (d) and (e) were taken from refs , − , − , , and − .…”

Section: Full Cells With Silicon Anodesmentioning

confidence: 99%

Silicon as Emerging Anode in Solid-State Batteries

Huo

Janek

2022

ACS Energy Lett.

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“…[149] Recent studies demonstrated notable progress in Si-based SSEs-LIBs adopting gel-polymer electrolytes, [150] garnet-type [151] or sulfide solid electrolytes. [139,152] Surprisingly, with improved ionic conductivity of electrolyte and Si-SSE interfacial contact, stable full cell cycle performances with 99.9 wt% Coulombic efficiency could be achieved even at high current density (5 mA cm −2 ). [139] This implies that Si-based particles can be seriously regarded as an anode choice alternative to Li metal in solid state batteries.…”

Section: Outlook In Solid-state Batteriesmentioning

confidence: 99%

Emerging Organic Surface Chemistry for Si Anodes in Lithium‐Ion Batteries: Advances, Prospects, and Beyond

Chen

Soltani

Chen

et al. 2022

Advanced Energy Materials

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To date, lithium-ion batteries (LIBs) as one of the most promising means of energy storage have witnessed progressive upgrades of cell energy density and cost reduction, enabling, for example, longer EVs travel ranges (>300 km/charge) and deeper penetration of renewables into grid electricity. Despite the fast growing market of LIBs [3] and the worldwide conspicuous rise in LIBs production, the practical specific energy density of prevailing LIBs adopting graphite anode is approaching its theoretical limit, that is, ≈250 Wh kg −1 when paired with high-energy ceramic cathode such as nickel cobalt manganese oxides. Nevertheless, to meet the everpresent relentless demand from end-users such as portable electronics and EVs, the battery ought to be upgraded to provide 400-500 Wh kg −1 , 700-800 Wh L −1 with lower cost (<9.5 US cents/Wh, expected in 2030), and fast charge capabilities (>2C, i.e., fully charged within 1/2 h). [4] To achieve these goals, the core strategy for developing next-generation LIBs is to exploit higher-capacity battery materials that are cheap and abundant.Silicon (Si) is recognized to be one of the most appealing choices of anode materials due to its inherent low-cost, natural abundance, and the ultrahigh theoretical capacity of 3590 mAh g −1 (based on Li 15 Si 4 ) at low potential (<0.4 V vs Li/ Li + ). [5] Pioneering battery manufacturers like CATL and Tesla have Due to its uniquely high specific capacity and natural abundance, silicon (Si) anode for lithium-ion batteries (LIBs) has reaped intensive research from both academic and industrial sectors. This review discusses the ongoing efforts in tailoring Si particle surfaces to minimize the cycle-induced changes to the integral structure of particles or electrodes. As an upgrade or alternative to conventional coatings (e.g., carbons), the emerging organic moieties on Si offer new avenues toward tuning the interactions with various battery components that are key to electrochemical performances. The recent progress on understanding Si surfaces is reviewed with an emphasis on newly emerged diagnostic tools, which increasingly points to the critical role of organic components in stabilizing Si. The detailed analysis on the chemistry-structure-performance relationships in Si surface are discussed and the successful cases demonstrating the functions of the organic layers are provided, that is, via tailored interactions toward electrolyte or binder or conductive agents, are recapped. Various synthetic strategies for designing the surface organic layers are discussed and compared, highlighting the versatility and tunability of surface organic chemistry. The holistic considerations and promising research directions are summarized, shedding light on in-depth understanding and engineering Si surface chemistry toward practical LIBs application.

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“…Recent studies have shown that solid-state full batteries using silicon anodes, sulde solid-state electrolytes, and NCM811 cathodes have better cycling performance than lithium metal, which undoubtedly advances the commercialization of silicon anodes. 130,131 In brief, silicon anodes emerge as the most promising anodes for solid-state batteries due to their low cost, ease of scaling up, and high safety. Silicon anodes also exhibit enhanced compatibility with sulde solid-state electrolytes than lithium metal.…”

Section: Discussionmentioning

confidence: 99%