Synergistic Structural Engineering of Tunnel‐Type Polyantimonic Acid Enables Dual‐Boosted Volumetric and Areal Lithium Energy Storage (Adv. Energy Mater. 26/2022)

Yong, Kai; Fang, Haoyu; Wang, Boya; Qiu, Xiaoling; Wu, Kaipeng; Wang, Qian; Zhang, Yun; Wu, Hao

doi:10.1002/aenm.202270112

Cited by 2 publications

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“…[186,187] 2) Metal heteroatom doping can adjust the Fermi level of the matrix materials, thereby improving intrinsic conductivity. [177,188] Both cobalt-modified carbon [76] and cobalt-doped electrocatalysts [177,184] have shown improvements in electrochemical performance. For instance, Li et al synthesized a cobalt-doped MoSe 2 /Ti 3 C 2 T x bifunctional catalyst as an efficient sulfur host.…”

Section: Metal Heteroatom Dopingmentioning

confidence: 99%

“…[216] Wu et al also customized square and circular electrodes using 3D printing. [188] Moreover, porous 3D printing structures like grid, [217] cube, and block structures [219] have been explored. By combining micro/mesoporous materials in the ink formulation, hierarchical porous structures have been achieved, creating smooth transmission channels for electrons/ions and buffering volume expansion during cycling.…”

Section: D Printingmentioning

confidence: 99%

“…[ 186,187 ] 2) Metal heteroatom doping can adjust the Fermi level of the matrix materials, thereby improving intrinsic conductivity. [ 177,188 ]…”

Section: Strategies Of High‐loading Electrodes Design With Superior P...mentioning

confidence: 99%

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Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Tang,

Wei,

Jia

et al. 2023

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High‐loading electrodes play a crucial role in designing practical high‐energy batteries as they reduce the proportion of non‐active materials, such as current separators, collectors, and battery packaging components. This design approach not only enhances battery performance but also facilitates faster processing and assembly, ultimately leading to reduced production costs. Despite the existing strategies to improve rechargeable battery performance, which mainly focus on novel electrode materials and high‐performance electrolyte, most reported high electrochemical performances are achieved with low loading of active materials (<2 mg cm−2). Such low loading, however, fails to meet application requirements. Moreover, when attempting to scale up the loading of active materials, significant challenges are identified, including sluggish ion diffusion and electron conduction kinetics, volume expansion, high reaction barriers, and limitations associated with conventional electrode preparation processes. Unfortunately, these issues are often overlooked. In this review, the mechanisms responsible for the decay in the electrochemical performance of high‐loading electrodes are thoroughly discussed. Additionally, efficient solutions, such as doping and structural design, are summarized to address these challenges. Drawing from the current achievements, this review proposes future directions for development and identifies technological challenges that must be tackled to facilitate the commercialization of high‐energy‐density rechargeable batteries.

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Section: Metal Heteroatom Dopingmentioning

confidence: 99%

Section: D Printingmentioning

confidence: 99%

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Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Tang,

Wei,

Jia

et al. 2023

Small

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“…The experiment details were discussed in reference. [ 41 ] High‐resolution HAADF‐STEM, STEM‐IDPC, and EELS images were obtained with a Talos F200s microscope operated at 300 kV. The IDPC technique allowed imaging under low‐dose conditions to avoid the irradiation effect of the crystal H 2 O molecules.…”

Section: Methodsmentioning

confidence: 99%

Electrochemically Induced Crystalline‐to‐Amorphous Transition of Dinuclear Polyoxovanadate for High‐Rate Lithium‐Ion Batteries

Lin

Jin

et al. 2023

Adv Funct Materials

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Polyoxometalates are intriguing high-capacity anode materials for alkalimetal-ion storage due to their multi-electron redox capabilities and flexible structure. However, their poor electrical conductivity and high working voltage severely restrict their practical application. Herein, the dinuclear polyoxovanadate Sr 2 V 2 O 7 •H 2 O with unusually high electrical conductivity is reported as a promising anode material for lithium-ion batteries. During the initial lithiation process, the Sr 2 V 2 O 7 •H 2 O anode experiences an electrochemically induced crystalline-to-amorphous transition. The resulting amorphous structure provides high redox activity and fast reaction kinetics via reversible V 4.9+ /V 2.8+ redox couple through the intercalation mechanism. Furthermore, when coupled with the LiFePO 4 cathode, the strong VO bonds of the amorphous anode provide excellent structural stability, with the full-cell capable of performing >12 000 cycles with a capacity retention of 72%. Another advantage of Sr 2x V 2 O 7-δ •yH 2 O (0.5 ≤ x ≤ 1.0) is its composition adjustability, which enables delicately regulating the Sr vacancy content without destroying the structure. The defect Sr 2x V 2 O 7-δ •yH 2 O (x = 0.5) electrodes show significantly improved specific capacity and rate capability without sacrificing other key properties, delivering a high specific capacity of 479 mAh g -1 at 0.1 mA cm -2 and 41.9% of its capacity in 2 min. Overall, the preliminary study points the way forward for the facile preparation of high-quality polyoxometalates for advanced energy storage applications and beyond.

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Synergistic Structural Engineering of Tunnel‐Type Polyantimonic Acid Enables Dual‐Boosted Volumetric and Areal Lithium Energy Storage (Adv. Energy Mater. 26/2022)

Cited by 2 publications

References 0 publications

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Electrochemically Induced Crystalline‐to‐Amorphous Transition of Dinuclear Polyoxovanadate for High‐Rate Lithium‐Ion Batteries

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