A new dual-ion hybrid energy storage system with energy density comparable to that of ternary lithium ion batteries

He, Shenggong; Wang, Shaofeng; Chen, Hedong; Hou, Xianhua; Shao, Zongping

doi:10.1039/c9ta12660k

Cited by 98 publications

(51 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specific power P and energy E density were estimated using P [W/kg] = V × i/m and E [Wh/kg] = P × t, where V [V] was the average cell potential between the highest and lowest cut-off voltage, i [A] was the current, m [kg] was the total mass of both negative and positive electrodes including LTO, AC, LFP, SP and CMC, and t [h] was the charging time. [22,23] At 20 mA/g, the AC-only-based LIC delivered an energy density of ~ 40 Wh/kg, much lower than the LIB configuration with a LFP-only electrode of ~ 190 Wh/kg. As LFP fraction increased from 10 to 80 wt% in the hybrid AC/LFP cathodes, the LIC specific energy at 20 mA/g increased from 65 to 140 Wh/kg.…”

Section: Resultsmentioning

confidence: 98%

High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers

Lee

Huang

Grant

2020

Energy Storage Materials

View full text Add to dashboard Cite

The ability to recharge and to deliver high capacity quickly is required for the next generation of lithium ion storage technologies, especially for pure electric vehicles.A new type of hybrid positive electrode for lithium ion capacitors is investigated that comprises discrete layers of high power capacitive activated carbon and high capacity insertion-type LiFePO4, with the aim of boosting energy density towards that of a lithium ion battery while preserving capacitor-like power capability over thousands of charge/discharge cycles. The electrochemical performance of these hybrid electrodes was investigated both as a function of the LiFePO4 weight fraction (its thickness in the multi-layered electrode arrangement) and its location within the multi-layer. The best performing hybrid positive electrode architecture delivered an attractive balance of an energy density of ~ 90 Wh/kg and a power density of ~ 15 kW/kg in a full lithium ion capacitor configuration, which outperformed other combinations of the same materials. The ability to produce a double-sided configuration of the hybrid layered electrode over 20 × 20 cm 2 was demonstrated, confirming the potential scalability of layer-by-layer manufacture.

show abstract

Section: Resultsmentioning

confidence: 98%

High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers

Lee

Huang

Grant

2020

Energy Storage Materials

View full text Add to dashboard Cite

show abstract

“…[ 8 ] DIBs are known to exhibit a higher self‐discharge rate compared to LIBs, especially at a high SOC or elevated temperature. [ 8,41 ] Further optimization of the graphitic material, [ 19,37 ] cycling protocol, [ 41 ] and cell configuration is required to improve the rate performance as well as the C.E. for supporting practical long‐term operation.…”

Section: Resultsmentioning

confidence: 99%

“…[ 12–14 ] Third, the diversity of potential cationic (Na + , [ 15 ] K + , [ 16 ] and Ca 2+ , [ 17 ] etc.) and anionic (AlCl 4 − , [ 18 ] PF 6 − , [ 15,17,18,19 ] BF 4 − , [ 18 ] CF 3 SO 3 − , [ 18 ] bis(trifluoromethanesulfonyl)amide (TFSA − ), [ 16,20 ] and bis(fluorosulfonyl)amide (FSA − ), [ 20 ] etc.) species provides opportunities for constructing new batteries.…”

Section: Introductionmentioning

confidence: 99%

An Energy‐Dense Solvent‐Free Dual‐Ion Battery

Chen

Matsumoto

Kubota

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

Ever-increasing energy demands call for alternative energy storage technologies with balanced performance and cost characteristics to meet current and emerging applications. Dual-ion batteries (DIBs) are considered particularly attractive owing to the potentially high specific energy, a rich variety of charge carrier combinations, and the applicability of metal-free cathode and earth-abundant anode materials. However, their performance falls far below expectations because of a large excess of solvent needed to dissolve electroactive species that induces side reactions and contributes parasitic weight, which penalizes the reversible capacity and cell-level energy density. Herein, a solvent-free DIB utilizing a binary alkali metal molten salt based on bis(fluorosulfonyl)amide as the electrolyte to solve these issues is demonstrated. The cell (NaK-DIB) operates in a temperature range of 90-120 °C and exhibits high theoretical energy densities of 246 Wh kg −1 and 533 Wh L −1 based on active materials and capacity-matched electrolyte, far surpassing those of reported DIBs. Further improvements could realize affordable gridscale energy storage.

show abstract

“…A carbon layer as a volume buffer was designed to coat graphite@nano‐silicon (Si/C) for DIB. [ 76 ] The reaction mechanism of prepared Si/C was described as the formation/deformation of the amorphous Li x Si alloy and Li x C compound. To regulate the alloying stress of Si during the electrochemical process, Tang and co‐workers developed a flexible Si anode on a soft nylon fabric modified with a conductive Cu–Ni buffer layer (Figure 5e).…”

Section: Anode Materialsmentioning

confidence: 99%

“…[ 77,109 ] However, the high concentration of electrolytes is affected by the solubility of active salts in organic solvents. Highly concentrated electrolyte prototypes based on 4 m LiPF 6 dissolved in EMC solvent were applied in various DIB systems, e.g., Li–graphite DIB, [ 51a ] Si/C–graphite DIB, [ 76 ] Ni 3 S 2 /Ni foam@RGO–graphite DIB, [ 82 ] MnO–graphite DIB, [ 83 ] and Al–graphite DIB. [ 109 ] However, the LiPF 6 based electrolytes often suffer from relatively limited concentration due to the strong interaction and large dissociation energy between Li + and PF 6 − .…”

Section: Electrolytesmentioning

confidence: 99%

A Review of Emerging Dual‐Ion Batteries: Fundamentals and Recent Advances

Zhang

Wang

Zhang

et al. 2021

Adv Funct Materials

140

View full text Add to dashboard Cite

Dual‐ion batteries (DIBs), based on the working mechanism involving the storage of cations and anions separately in the anode and cathode during the charging/discharging process, are of great interest beyond lithium‐ion batteries (LIBs) in high‐efficiency energy storage due to the merits of high working voltage, material availability, as well as low cost and excellent safety. Despite the progress achieved, the practical applications of DIBs are still hindered by negative issues, such as limited capacity and cyclic stability, which triggers the development of suitable electrode materials with highly reversible capacities, and corresponding electrolytes with high oxidative stability as well as sufficient reaction kinetics of active ions. Herein, in this article, a systematic and comprehensive review of fundamentals and recent advances in current DIBs with subcategories of cathode materials, anode materials, and electrolytes are presented. In particular, their energy storage mechanisms, as well as their respective features, are dissected. Furthermore, some strategies and perspectives are proposed for facilitating the further development of DIBs in the future.

show abstract

A new dual-ion hybrid energy storage system with energy density comparable to that of ternary lithium ion batteries

Abstract: A new dual-ion hybrid device is successfully fabricated with a silicon carbon anode and an expanded graphite cathode and exhibits an excellent energy density.

Cited by 98 publications

References 59 publications

High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers

High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers

An Energy‐Dense Solvent‐Free Dual‐Ion Battery

A Review of Emerging Dual‐Ion Batteries: Fundamentals and Recent Advances

Contact Info

Product

Resources

About