scholarly journals High-energy and long-life aluminum−sulfur battery: Employment of electrocatalytic function into continuous multiple reactions within quasi-solid-state electrolyte

2022 ◽  
Author(s):  
Zheng Huang ◽  
Wei Wang ◽  
Wei-Li Song ◽  
Mingyong Wang ◽  
Hao-Sen Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Specific Capacity ◽  
High Energy ◽  
Discharge Voltage ◽  
Ultrahigh Energy ◽  
Solid State Electrolyte ◽  
Shuttle Effect ◽  
Multiple Reactions ◽  
Doped Graphene

Abstract Aluminum−sulfur (Al−S) batteries of ultrahigh energy-to-price ratios are promising for next-generation energy storage, while they suffer from large charge/discharge voltage hysteresis and short lifespan. Herein, an electrocatalyst-boosting quasi-solid-state Al−S battery is proposed, in which sulfur is anchored on the cobalt/nitrogen co-doped graphene (S@CoNG, as the positive electrode) and chloroaluminate-based ionic liquid (IL) is encapsulated into metal-organic frameworks (IL@MOF, as the quasi-solid-state electrolyte). Mechanistically, the Co−N bonds in CoNG act as electrocatalytic center to continuous induce breaking of Al−Cl bonds and S−S bonds and accelerate the kinetics of sulfur conversion, endowing the Al−S battery with much shortened voltage gap of 0.32 V and 0.98 V in the discharge voltage plateau. Within quasi-solid-state IL@MOF electrolytes, shuttle effect of polysulfides has been inhibited, which stabilizes the process of reversible sulfur conversion. Consequently, the assembled Al−S battery presents high specific capacity of 820 mAh g−1 and 78% capacity retention after 300 cycles. This concept here offers novel insights to design practical Al−S batteries for stable energy storage.

Enhanced compatibility of a polymer-based electrolyte with Li-metal for stable and dendrite-free all-solid-state Li-metal batteries

2021 ◽  
Author(s):  
Hasan Jamal ◽  
Firoz Khan ◽  
Hyeong-Rok Si ◽  
Jae Hyun Kim
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
High Power ◽  
High Performance ◽  
High Energy ◽  
Solid State Electrolyte ◽  
High Energy Storage

To meet the rapidly growing demand for high-energy storage, it will be crucial to develop high power all-solid-state Li-metal batteries (SS-LMBs). In SSLMBs, the solid-state electrolyte enables high performance and...

scholarly journals LLCZN/PEO/LiPF6 Composite Solid-State Electrolyte for Safe Energy Storage Application

Batteries ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 3
Author(s):  
Samuel Adjepong Danquah ◽  
Jacob Strimaitis ◽  
Clifford F. Denize ◽  
Sangram K. Pradhan ◽  
Messaoud Bahoura
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Solid Electrolyte ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Interfacial Resistance ◽  
Lithium Ions ◽  
Solid State Electrolyte ◽  
Transport Path

All-solid-state batteries (ASSBs) are gaining traction in the arena of energy storage due to their promising results in producing high energy density and long cycle life coupled with their capability of being safe. The key challenges facing ASSBs are low conductivity and slow charge transfer kinetics at the interface between the electrode and the solid electrolyte. Garnet solid-state electrolyte has shown promising results in improving the ion conductivity but still suffers from poor capacity retention and rate performance due to the interfacial resistance between the electrodes. To improve the interfacial resistance, we prepared a composite consisting of Li7La2.75Ca0.25Zr1.75Nb0.25O12 (LLCZN) garnet material as the ceramic, polyethylene oxide (PEO) as the polymer, and lithium hexafluorophosphate (LiPF6) as the salt. These compounds are mixed in a stoichiometric ratio and developed into a very thin disc-shaped solid electrolyte. The LLCZN provides a lithium-ion transport path to enhance the lithium-ion conduction during charging and discharging cycles, while the LiPF6 contributes more lithium ions via the transport path. The PEO matrix in the composite material aids in bonding the compounds together and creating a large contact area, thereby reducing the issue of large interfacial resistance. FESEM images show the porous nature of the electrolyte which promotes the movement of lithium ions through the electrolyte. The fabricated LLCZN/PEO/LiPF6 solid-state electrolyte shows outstanding electrochemical stability that remains at 130 mAh g−1 up to 150 charging and discharging cycles at 0.05 mA cm−2 current. All the specific capacities were calculated based on the mass of the cathode material (LiCoO2). In addition, the coin cell retains 85% discharge capacity up to 150 cycles with a Coulombic efficiency of approximately 98% and energy efficiency of 90% during the entire cycling process.

scholarly journals A SnO2QDs/GO/PPY ternary composite film as positive and graphene oxide/charcoal as negative electrodes assembled solid state asymmetric supercapacitor for high energy storage applications

RSC Advances ◽  
2021 ◽  
Vol 11 (45) ◽  
pp. 27801-27811
Author(s):  
M. Vandana ◽  
Y. S. Nagaraju ◽  
H. Ganesh ◽  
S. Veeresh ◽  
H. Vijeth ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Solid State ◽  
Composite Film ◽  
High Energy ◽  
Asymmetric Supercapacitor ◽  
Ternary Composite ◽  
Negative Electrodes ◽  
Energy Storage Applications ◽  
High Energy Storage

Representation of the synthesis steps of SnO2QDs/GO/PPY ternary composites and SnO2QDs/GO/PPY//GO/charcoal asymmetric supercapacitor device.

scholarly journals Novel Lithium-Ion Capacitor Based on a NiO-rGO Composite

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3586
Author(s):  
Qi An ◽  
Xingru Zhao ◽  
Shuangfu Suo ◽  
Yuzhu Bai
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Lithium Ion Capacitor

Lithium-ion capacitors (LICs) have been widely explored for energy storage. Nevertheless, achieving good energy density, satisfactory power density, and stable cycle life is still challenging. For this study, we fabricated a novel LIC with a NiO-rGO composite as a negative material and commercial activated carbon (AC) as a positive material for energy storage. The NiO-rGO//AC system utilizes NiO nanoparticles uniformly distributed in rGO to achieve a high specific capacity (with a current density of 0.5 A g−1 and a charge capacity of 945.8 mA h g−1) and uses AC to provide a large specific surface area and adjustable pore structure, thereby achieving excellent electrochemical performance. In detail, the NiO-rGO//AC system (with a mass ratio of 1:3) can achieve a high energy density (98.15 W h kg−1), a high power density (10.94 kW kg−1), and a long cycle life (with 72.1% capacity retention after 10,000 cycles). This study outlines a new option for the manufacture of LIC devices that feature both high energy and high power densities.

Li-based MOF-derived multifunctional PEO polymer solid-state electrolyte for lithium energy storage

2022 ◽  
Author(s):  
Xiang Han ◽  
Tiantian Wu ◽  
Lanhui Gu ◽  
Dian Tian
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Isophthalic Acid ◽  
Solid State Electrolyte ◽  
Metal Organic ◽  
Solvothermal Conditions ◽  
Organic Framework

A three-dimensional (3D) metal-organic framework containing Li-oxygen clusters, namely {[Li2(IPA)]·DMF}n (1) (H2IPA = isophthalic acid), has been constructed under solvothermal conditions. The Li-based MOF can be applied to lithium energy...

scholarly journals High energy density in silver niobate ceramics

2016 ◽  
Vol 4 (44) ◽  
pp. 17279-17287 ◽  
Author(s):  
Ye Tian ◽  
Li Jin ◽  
Hangfeng Zhang ◽  
Zhuo Xu ◽  
Xiaoyong Wei ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
High Power ◽  
High Energy ◽  
High Energy Density ◽  
Super Capacitors

Solid-state dielectric energy storage is the most attractive and feasible way to store and release high power energy compared to chemical batteries and electrochemical super-capacitors.

Nano-dendrite structured cobalt phosphide based hybrid supercapacitor with high energy storage and cycling stability

2021 ◽  
Author(s):  
Xiaoyu Chen ◽  
Pu Chang ◽  
Shuo Zhang ◽  
Lixiu Guan ◽  
Guohe Ren ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacity ◽  
High Energy ◽  
Cycling Stability ◽  
Activation Process ◽  
Carbon Cloth ◽  
Cobalt Phosphide ◽  
Improved Performance ◽  
Transition Metal Phosphides ◽  
High Energy Storage

Abstract The supercapacitors possessing high energy storage and long serving period have strategic significance to solve the energy crisis issues. Herein, fluffy nano-dendrite structured cobalt phosphide (CoP) is grown on carbon cloth through simple hydrothermal and electrodeposition treatments (CoP/C-HE). Benefit from its excellent electrical conductivity and special structure, CoP/C-HE manifests a high specific capacity of 461.4 C g-1 at 1 A g-1. Meanwhile, the capacity retention remains 92.8% over 10000 cycles at 5 A g-1, proving the superior cycling stability. The phase conversion of Co2P during the activation process also contributes to the improved performance. The assembled two-electrode asymmetric supercapacitor demonstrates excellent performance in terms of energy density (42.4 W h kg-1 at a power density of 800.0 W kg-1) and cycling stability (86.3% retention over 5000 cycles at 5 A g-1), which is superior to many reported cobalt-based supercapacitors. Our work promotes the potential of transition metal phosphides for the applications in supercapacitors.

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