Tailoring electrolyte to enable high-rate and super-stable Ni-rich NCM cathode materials for Li-ion batteries

Cheng, Fangyuan; Zhang, Xiaoyu; Qiu, Yuegang; Zhang, Jinxu; Liu, Yi; Wei, Peng; Ou, Mingyang; Sun, Shixiong; Xu, Yue; Li, Qing; Fang, Chun; Han, Jiantao; Huang, Yunhui

doi:10.1016/j.nanoen.2021.106301

Cited by 108 publications

(70 citation statements)

References 42 publications

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“…The charge transfer kinetics of the electrodes benefitted from the conductive polymer coating and a more stable interface between the electrode and electrolyte in the running cycles. Similar phenomena have also been observed in the other literature [33,34]. This result shows that PANI can reduce the electrical resistance of the electrochemical process.…”

Section: Resultssupporting

confidence: 91%

In situ polyaniline coating of Prussian blue as cathode material for sodium-ion battery

et al. 2021

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Prussian blue (PB) has great potential for use as a sodium cathode material owing to its high working potential and cube frame structure. Herein, this work reports a two-step method to synthesize PB with ascorbic acid as the ball-milling additive, which improves the electrochemical rate performance of PB during the traditional co-precipitation method. The obtained PB sample exhibited a superior specific capability (113.3 mAh g −1 even at 20 C, 1 C = 170 mA g −1 ) and a specific capacity retention of 84.8% after 100 cycles at 1 C rate. In order to enhance the cycling performance of the PB, an in situ polyaniline coating strategy was employed in which aniline was added into the electrolyte and polymerized under electrochemical conditions. The coated anode exhibited a high specific capacity retention of 62.7% after 500 cycles, which is significantly higher than that of the non-coated sample, which only remains 40.1% after 500 cycles. This development has shown a great potential as a low-cost, high-performance and environment-friendly technology for large-scale industrial application of PB.

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Section: Resultssupporting

confidence: 91%

In situ polyaniline coating of Prussian blue as cathode material for sodium-ion battery

et al. 2021

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“…12,21 Recent works on electrolyte engineering improved the cyclability of LIBs using NMC cathodes, mainly including high concentration electrolytes (HCEs), 22,23 localized high concentration electrolytes (LHCEs), 24,25 full-fluorine electrolytes, [26][27][28][29] and additive-assisted electrolytes. [30][31][32] Unfortunately, these approaches are unable to alleviate unwanted side reactions and form a compact and robust CEI towards stable long-cyclic LIBs. On the other hand, the low intercalation/deintercalation voltage of graphite results in continuous electrolyte reductive decomposition and other side reactions.…”

Section: Introductionmentioning

confidence: 99%

A self-purifying electrolyte enables high energy Li ion batteries

Lü

Lei

Weng

et al. 2022

Energy Environ. Sci.

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“…Both H 2 O and HF have been identified as harmful species in batteries and their effects have been discussed extensively in the literature (Yamane et al, 2001;Li et al, 2009;Han et al, 2015;Single et al, 2016;Chen et al, 2017;Peebles et al, 2017;Wotango et al, 2017;Nayak et al, 2018;Chen et al, 2020a;Fondard et al, 2020;Herriot, 2012;Han et al, 2020;Cheng et al, 2021;Haridas et al, 2021;Liao et al, 2021;Zhang et al, 2022). Electrolyte filling in NIB cells is usually done in the glovebox (H 2 O < 0.1 ppm) or dry room, which still contains low levels of water.…”

Section: Napfmentioning

confidence: 99%

Improved Lifetime of Na-Ion Batteries With a Water-Scavenging Electrolyte Additive

et al. 2022

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The lifetime of sodium-ion batteries is strongly affected by degradation species and contaminants such as H2O and HF, which are produced during formation and cycling. In this work, the use of low levels of N, N-diethyltrimethylsilylamine (DETMSA), as an electrolyte additive, shows an improvement in the stability and cycle life of a hard carbon vs. layered oxide sodium-ion battery. Approximately 80% of the capacity is retained after 500 cycles, which is almost double the performance of the standard electrolyte. The additive works by reducing the surface ageing constituents, as observed through XPS of the surfaces and the change in resistance after cycling. DETMSA is slowly consumed over time; however, the extensive improvement in cycle life shows that low level of impurities and degradation species have a big impact upon cycle life.

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Tailoring electrolyte to enable high-rate and super-stable Ni-rich NCM cathode materials for Li-ion batteries

Cited by 108 publications

References 42 publications

In situ polyaniline coating of Prussian blue as cathode material for sodium-ion battery

In situ polyaniline coating of Prussian blue as cathode material for sodium-ion battery

A self-purifying electrolyte enables high energy Li ion batteries

Improved Lifetime of Na-Ion Batteries With a Water-Scavenging Electrolyte Additive

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