Flexible Interface Design for Stress Regulation of a Silicon Anode toward Highly Stable Dual‐Ion Batteries

Jiang, Caihui; Lei, Xiang; Miao, Shijie; Shi, Lei; Xie, Donghao; Yan, Jiao; Zheng, Zijian; Zhang, Xiaoming; Tang, Yongbing

doi:10.1002/adma.201908470

Cited by 134 publications

(77 citation statements)

References 66 publications

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“…Alloy anodes are promising candidates as negative electrodes in Li and post Li-ion chemistries due to their high specific capacity [4][5][6][7][8][9] . Especially, Sn and their oxides have extremely high volumetric capacity (7200 mAh cm −3 for Sn, i.e.…”

mentioning

confidence: 99%

High Areal Capacity Porous Sn-Au Alloys with Long Cycle Life for Li-ion Microbatteries

Patnaik

Jadon

Tran

et al. 2020

Sci Rep

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Long-term stability is one of the most desired functionalities of energy storage microdevices for wearable electronics, wireless sensor networks and the upcoming internet of things. Although Liion microbatteries have become the dominant energy-storage technology for on-chip electronics, the extension of lifetime of these components remains a fundamental hurdle to overcome. Here, we develop an ultra-stable porous anode based on SnAu alloys able to withstand a high specific capacity exceeding 100 µAh cm −2 at 3 C rate for more than 6000 cycles of charge/discharge. Also, this new anode material exhibits low potential (0.2 V versus lithium) and one of the highest specific capacity ever reported at low Crates (7.3 mAh cm −2 at 0.1 C). We show that the outstanding cyclability is the result of a combination of many factors, including limited volume expansion, as supported by density functional theory calculations. This finding opens new opportunities in design of long-lasting integrated energy storage for self-powered microsystems.

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confidence: 99%

High Areal Capacity Porous Sn-Au Alloys with Long Cycle Life for Li-ion Microbatteries

Patnaik

Jadon

Tran

et al. 2020

Sci Rep

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“…A second pathway to achieving high energy density is the use of high‐capacitive electrode materials such as alloy‐type silicon anodes, [ 48 ] lithium metal anodes and sulfur cathodes for batteries, [ 71,80 ] and redox‐active nanomaterials for SCs. [ 47 ] For instance, a lithium‐sulfur battery fabricated with a fibrous sulfur cathode and conductive, nonwoven, reinforced lithium metal anode could provide a high energy density of 457 Wh kg −1 and 565 Wh L −1 , with good cycling performance over 500 charge/discharge cycles.…”

Section: Discussionmentioning

confidence: 99%

“…Pouch-type TEESDs are assembled by stacking one pair of TCEs (anode and cathode) and a separator/solid-state electrolyte into a sandwich architecture, which is then further sealed within an aluminum-plastic bag, waterproof fabric, or elastic polymer (Figure 2a). [47][48][49][50][51] As a proof-of-concept, Lee et al coated a LiFePO 4 cathode and Li 4 Ti 5 O 12 anode onto Ni-coated polyester textile and assembled them into a pouch-type LIB. [52] This textile-based LIB remained mechanically robust after 100 cycles of folding/unfolding, which was attributed to stress release by the TCEs.…”

Section: Pouch-type Teesdsmentioning

confidence: 99%

Textile Composite Electrodes for Flexible Batteries and Supercapacitors: Opportunities and Challenges

Gao

Xie

Zheng

2020

Advanced Energy Materials

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The ever‐growing demand for portable and wearable electronics has driven increased interest in flexible lithium‐ion batteries (LIBs) and supercapacitors (SCs). However, endowing conventional LIBs and SCs with good flexibility and high energy density is challenging, as metal foils and rigid electrodes are easily fractured during flexing. In recent years, textile composite electrodes (TCEs), electrodes coated onto or grown on conductive textile current collectors have shown great promise for application in flexible, high‐capacity/capacitance, and long‐cycle‐life textile‐based electrochemical energy storage devices (TEESDs). This Essay summarizes the advantages of TCEs compared to conventional metal‐foil‐supported electrodes (MFEs) and discusses the integration of TCEs into TEESDs as flexible LIBs and SCs for wearable applications. Finally, the challenges associated with TCEs and TEESDs are discussed alongside an analysis of possible solutions.

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“…Porous structures, [10] reducing particle size, [11] and the use of buffer layers [12] are the most critical research methods to improve the recyclability of Ge anodes. The porous structure can provide buffer space for expansion and improve lithium‐ion transmission efficiency, but it will reduce the strength to a certain extent [13] . Therefore, a proper porous structure design is critical.…”

Section: Introductionmentioning

confidence: 99%

A Ge/Carbon Atomic‐Scale Hybrid Anode Material: A Micro–Nano Gradient Porous Structure with High Cycling Stability

Yang

Chen

et al. 2021

Angewandte Chemie

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The continuous growth of the solid–electrolyte interface (SEI) and material crushing are the fundamental issues that hinder the application of Ge anodes in lithium‐ion batteries. Solving Ge deformation crushing during discharge/charge cycles is challenging using conventional carbon coating modification methods. Due to the chemical stability and high melting point of carbon (3500 °C), Ge/carbon hybridization at the atomic level is challenging. By selecting a suitable carbon source and introducing an active medium, we have achieved the Ge/carbon doping at the atom‐level, and this Ge/carbon anode shows excellent electrochemical performance. The reversible capacity is maintained at 1127 mAh g−1 after 1000 cycles (2 A g−1 (2–71 cycles), 4 A g−1 (72–1000 cycles)) with a retention of 84 % compared to the second cycle. The thickness of the SEI is only 17.4 nm after 1000 cycles. The excellent electrochemical performance and stable SEI fully reflect the application potential of this material.

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Flexible Interface Design for Stress Regulation of a Silicon Anode toward Highly Stable Dual‐Ion Batteries

Cited by 134 publications

References 66 publications

High Areal Capacity Porous Sn-Au Alloys with Long Cycle Life for Li-ion Microbatteries

High Areal Capacity Porous Sn-Au Alloys with Long Cycle Life for Li-ion Microbatteries

Textile Composite Electrodes for Flexible Batteries and Supercapacitors: Opportunities and Challenges

A Ge/Carbon Atomic‐Scale Hybrid Anode Material: A Micro–Nano Gradient Porous Structure with High Cycling Stability

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