The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Peng, Jian; Zhang, Wang; Wang, Shun; Huang, Yang; Wang, Jiazhao; Liu, Huan; Dou, S. X.; Chou, Shulei

doi:10.1002/adfm.202111720

Cited by 49 publications

(18 citation statements)

References 110 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…What's more, aqueous electrolytes provide higher ionic conductivity that is about two orders of magnitude higher than organic electrolytes, which profits their high-rate performance. [11][12][13][14] The first aqueous LIB, LiMn 2 O 4 //VO 2 with LiNO 3 electrolyte, was designed by Dahn et al in 1994, unveiling the prelude to developing cost-effective ARBs with high safety. [15] Apart from aqueous LIBs, up to now, a wide variety of ARBs based on earth-abundant metal-ions, such as sodium-ion (Na + ), [16,17] potassium-ion (K + ), [18,19] zinc-ion (Zn 2+ ), [20][21][22] magnesium-ion (Mg 2+ ), [23] calcium-ion (Ca 2+ ), [24] and aluminum-ion (Al 3+ ), [25] have been proposed, which have been considered as the promising candidates for large-scale energy storage.…”

Section: Introductionmentioning

confidence: 99%

Unlocking the High Capacity Ammonium‐Ion Storage in Defective Vanadium Dioxide

Dong

et al. 2022

Small

View full text Add to dashboard Cite

Aqueous ammonium‐ion storage has been considered a promising energy storage competitor to meet the requirements of safety, affordability, and sustainability. However, ammonium‐ion storage is still in its infancy in the absence of reliable electrode materials. Here, defective VO2 (d‐VO) is employed as an anode material for ammonium‐ion batteries with a moderate transport pathway and high reversible capacity of ≈200 mAh g−1. Notably, an anisotropic or anisotropic behavior of structural change of d‐VO between c‐axis and ab planes depends on the state of charge (SOC). Compared with potassium‐ion storage, ammonium‐ion storage delivers a higher diffusion coefficient and better electrochemical performance. A full cell is further fabricated by d‐VO anode and MnO2 cathode, which delivers a high energy density of 96 Wh kg−1 (based on the mass of VO2), and a peak energy density of 3254 W kg−1. In addition, capacity retention of 70% can be obtained after 10 000 cycles at a current density of 1 A g−1. What's more, the resultant quasi‐solid‐state MnO2//d‐VO full cell based on hydrogel electrolyte also delivers high safety and decent electrochemical performance. This work will broaden the potential applications of the ammonium‐ion battery for sustainable energy storage.

show abstract

Section: Introductionmentioning

confidence: 99%

Unlocking the High Capacity Ammonium‐Ion Storage in Defective Vanadium Dioxide

Dong

et al. 2022

Small

View full text Add to dashboard Cite

show abstract

“…[30][31][32] For energy storage materials, the reconstruction process is mostly reported to occur during CV cycling, which is due to the fact that electrodes are often subjected to multiple cycles of CV activation to enhance their storage activity prior to use. [33,34] In these cases, the reconstruction process is essentially a concomitant phenomenon under energy storage or OER conditions, which has led most studies to focus on the description of reconstruction under operating conditions rather than treating reconstruction as an independent reaction process. We notice that the occurrence of reconstruction as an electrochemical reaction requires the attainment of a specific potential to cross the energy barrier of the reaction, although in some cases it will compete with OER or charge/discharge processes.…”

Section: Introductionmentioning

confidence: 99%

Potentiostatic Reconstruction of Nickel‐Cobalt Hydroxysulfate with Self‐Optimized Structure for Enhancing Energy Storage

Yang

Zhang

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

Transition metal chalcogenides (TMCs) are widely used as energy storage materials, however, most studies have neglected the reconstruction process that occurs during the operation. Thus, the intrinsic energy storage mechanism of TMCs and the identification and modulation of the reconstruction process are not adequately investigated. Herein, a proactive modulation strategy for reconstruction kinetics under nonoperating conditions is proposed, and a potentiostatic reconstruction method is developed. The effects of three electrochemical techniques of potentiostatic, cyclic voltammetry, and galvanostatic on reconstruction products are also revealed. Notably, under potentiostatic reconstruction, the needle‐like nickel‐cobalt sulfide precursor is transformed into columnar, polycrystalline, defect‐rich nickel‐cobalt hydroxysulfate (NCHS‐E), and the process is analyzed in detail by in situ and ex situ characterization. NCHS‐E exhibits an excellent electrochemical performance with a specific capacity of 5040 mC cm−2 at 1 mA cm−2 and capacity retention of 67.1% at 50 mA cm−2. Kinetic analysis and theoretical calculations show that NCHS‐E has fast charge transfer ability and low deprotonation energy, indicating a favorable energy storage pathway. This work proves the important potential of reconstruction kinetic modulation to optimize the structure and properties of the products and provides new insights into the mechanism of reconstruction occurrence.

show abstract

“…What's more, electrochemical activation (such as chronoamperometry activation [45,151] and one-step galvanostatic/potentiostatic charging activation [152] ) is also applied as a posttreatment because of the facile operation, variable control, and high efficiency. [153]…”

Section: Post-treatments Of 3d Printed Electrodesmentioning

confidence: 99%

3D Printed Supercapacitor: Techniques, Materials, Designs, and Applications

Zhou

Cheng

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Supercapacitors (SCs) offer broad possibilities in the rising domain of military and civilian owing to their intrinsic properties of superior power density, long lifetime, and safety features. Despite of low-cost, facile manufacture, and time-saving, 3D printing technology unleashes the potential of SCs in terms of achieving desirable capacitance with high mass loading, fabrication of welldesigned complicated structures, and direct construction of on-chip integration systems. In this review, first, the representative printing technologies for SCs and advanced printable materials are scrutinized for SCs and advanced printable materials. Then the structure design principles of electrodes and devices are respectively highlighted and reported cases are systematically summarized. Next, configurations of the SCs and their applications in various areas are described in detail. Finally, the promising research directions for the future are discussed. The perspectives reviewed here are expected to provide a comprehensive understanding of 3D-printed SCs and guidance in realizing their promise in various applications.

show abstract

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Cited by 49 publications

References 110 publications

Unlocking the High Capacity Ammonium‐Ion Storage in Defective Vanadium Dioxide

Unlocking the High Capacity Ammonium‐Ion Storage in Defective Vanadium Dioxide

Potentiostatic Reconstruction of Nickel‐Cobalt Hydroxysulfate with Self‐Optimized Structure for Enhancing Energy Storage

3D Printed Supercapacitor: Techniques, Materials, Designs, and Applications

Contact Info

Product

Resources

About