Raising the cycling stability of aqueous lithium-ion batteries by eliminating oxygen in the electrolyte

Luo, Jiayan; Cui, Wang-jun; He, Ping; Xia, Yongyao

doi:10.1038/nchem.763

Cited by 833 publications

(602 citation statements)

References 13 publications

Supporting

Mentioning

582

Contrasting

Unclassified

Order By: Relevance

“…5c), that is 61.9% of the total dischargeable amount of the original PB/Al cell. Though the specific capacity is relatively low compared with those of lithium batteries [11][12][13][14] , the as-prepared PB/Al battery is potentially capable of providing a reasonably large total capacity in a limited volume and a high voltage with the thin-layered structure. If an external bias is applied to charge the bleached device instead of self-charging in air, both of the charge and re-discharge capacities can be increased by B27.8% (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A bi-functional device for self-powered electrochromic window and self-rechargeable transparent battery applications

et al. 2014

View full text Add to dashboard Cite

Electrochromic smart windows are regarded as a good choice for green buildings. However, conventional devices need external biases to operate, which causes additional energy consumption. Here we report a self-powered electrochromic window, which can be used as a self-rechargeable battery. We use aluminium to reduce Prussian blue (PB, blue in colour) to Prussian white (PW, colourless) in potassium chloride electrolyte, realizing a device capable of self-bleaching. Interestingly, the device can be self-recovered (gaining blue appearance again) by simply disconnecting the aluminium and PB electrodes, which is due to the spontaneous oxidation of PW to PB by the dissolved oxygen in aqueous solution. The self-operated bleaching and colouration suggest another important function of the device: a self-rechargeable transparent battery. Thus the PB/aluminium device we report here is bifunctional, that is, it is a self-powered electrochromic window as well as a self-rechargeable transparent battery.

show abstract

Section: Resultsmentioning

confidence: 99%

“…On the other hand, lithium ion battery, one of the most popular energy storage devices, is attracting considerable interest in cell phones, laptop computers, electric vehicles, lighting, military and aerospace applications due to its high energy density, long lifetime and small size [11][12][13][14] . In general, charging of batteries consumes electricity.…”

mentioning

confidence: 99%

A bi-functional device for self-powered electrochromic window and self-rechargeable transparent battery applications

et al. 2014

View full text Add to dashboard Cite

show abstract

“…4C we compared our aqueous Li + /S batteries against other successful aqueous systems reported previously. In most cases, energy densities for aqueous systems were below 78 Wh·kg −1 (10,(38)(39)(40) …”

Section: Resultsmentioning

confidence: 99%

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

Yang

Suo

Borodin

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

165

182

View full text Add to dashboard Cite

Leveraging the most recent success in expanding the electrochemical stability window of aqueous electrolytes, in this work we create a unique Li-ion/sulfur chemistry of both high energy density and safety. We show that in the superconcentrated aqueous electrolyte, lithiation of sulfur experiences phase change from a highorder polysulfide to low-order polysulfides through solid-liquid two-phase reaction pathway, where the liquid polysulfide phase in the sulfide electrode is thermodynamically phase-separated from the superconcentrated aqueous electrolyte. The sulfur with solid-liquid two-phase exhibits a reversible capacity of 1,327 mAh/(g of S), along with fast reaction kinetics and negligible polysulfide dissolution. By coupling a sulfur anode with different Li-ion cathode materials, the aqueous Li-ion/sulfur full cell delivers record-high energy densities up to 200 Wh/(kg of total electrode mass) for >1,000 cycles at ∼100% coulombic efficiency. These performances already approach that of commercial lithium-ion batteries (LIBs) using a nonaqueous electrolyte, along with intrinsic safety not possessed by the latter. The excellent performance of this aqueous battery chemistry significantly promotes the practical possibility of aqueous LIBs in large-format applications.water-in-salt | rechargeable aqueous battery | aqueous sulfur battery | gel polymer electrolyte | phase separation I n the past two decades, rechargeable lithium-ion batteries (LIBs) have revolutionized consumer electronics with their high energy density and excellent cycling stability, and are the state-of-the-art candidates for applications ranging from kilowatt hours for electric vehicles up to megawatt hours for grids (1, 2). The latter applications in large-format present much more stringent requirements for safety, cost, and environmental friendliness, besides energy density and cycle life. The shortcomings of LIB are mostly due to the flammable and toxic nonaqueous electrolytes and moderate energy densities (<400 Wh·kg −1 ) provided by the electrochemical couples currently used (3). Among the various "beyond Li-ion" high-energy chemistries (>500 Wh·kg −1 ) explored currently, the nonaqueous lithium/sulfur (Li/S) battery based on sulfur as a cathode (theoretical capacity of 1,675 mAh·g −1 ) and metallic lithium as an anode seems to be the most practical, as evidenced by the mushrooming literature and significant advances in this system in the past 5 y (4-7). However, commercialization of this system still faces challenges because of severe safety concerns associated with the dendrite growth of metallic Li anode in highly inflammable ether-based electrolytes (8), and the high self-discharge associated with parasitic shuttling of the intermediate polysulfide species. Moreover, the moisture-sensitive nature of the nonaqueous electrolyte would contribute significantly to the cost of the Li/S battery pack due to the stringent moisture-exclusion infrastructure required during the manufacturing, processing, and packaging of the cells. The indispensabl...

show abstract

“…They are potentially advantageous owing to the safety, high ionic conductivity and low cost of aqueous electrolytes. Aqueous lithium-ion batteries using cathode materials adopted from commercialized organic electrolyte cells have been explored, but in general they have shown limited cycle life [6][7][8] . Aqueous sodium cells using a Na x MnO 2 cathode and a capacitive carbon anode have been demonstrated to offer long cycle life, but have limited rate capability 9,10 .…”

mentioning

confidence: 99%

A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage

et al. 2012

View full text Add to dashboard Cite

new types of energy storage are needed in conjunction with the deployment of solar, wind and other volatile renewable energy sources and their integration with the electric grid. no existing energy storage technology can economically provide the power, cycle life and energy efficiency needed to respond to the costly short-term transients that arise from renewables and other aspects of grid operation. Here we demonstrate a new type of safe, fast, inexpensive, long-life aqueous electrolyte battery, which relies on the insertion of potassium ions into a copper hexacyanoferrate cathode and a novel activated carbon/polypyrrole hybrid anode. The cathode reacts rapidly with very little hysteresis. The hybrid anode uses an electrochemically active additive to tune its potential. This high-rate, high-efficiency cell has a 95% round-trip energy efficiency when cycled at a 5C rate, and a 79% energy efficiency at 50C. It also has zero-capacity loss after 1,000 deep-discharge cycles.

show abstract

Raising the cycling stability of aqueous lithium-ion batteries by eliminating oxygen in the electrolyte

Cited by 833 publications

References 13 publications

A bi-functional device for self-powered electrochromic window and self-rechargeable transparent battery applications

A bi-functional device for self-powered electrochromic window and self-rechargeable transparent battery applications

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage

Contact Info

Product

Resources

About