Encapsulation of BiOCl nanoparticles in N-doped carbon nanotubes as a highly efficient anode for potassium ion batteries

Yang, Qianqian; Li, Hao; Chen, Xiao; Ma, Quanwei; Zhang, Longhai; Wang, Rui; Zhang, Shilin; Zhou, Tengfei; Guo, Zaiping; Zhang, Chao-Feng

doi:10.1039/d2nr00227b

Cited by 22 publications

(12 citation statements)

References 51 publications

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“…Research into electrochemical energy storage technologies offering high-energy conversion efficiency has drawn considerable worldwide attention in recent years, with the focus being on commercial lithium-ion batteries. However, their increasing cost (lithium, cobalt), toxicity, and flammable electrolytes have raised concerns regarding their further development. − Therefore, the development of low-cost, safe, and environmentally friendly secondary batteries is an urgent priority. Among various options, aqueous zinc-ion batteries (AZIBs) are regarded as extremely promising for large-scale smart-grid electrical power storage applications. , Because of the favorable compatibility of zinc and water, the mild aqueous electrolyte employed in AZIBs possesses a high level of safety and excellent ionic conductivity (about 1–10 mS·cm –1 ), besides the high theoretical capacity of 820 mAh·g –1 for the zinc anode and the low redox potential of −0.76 V versus the standard hydrogen electrode (SHE).…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Nanosheet Assemblies of Three-Dimensional Spongy Carbon/Nitrogen-Doped Vanadium Nitride Cathode for High-Performance Aqueous Zinc-Ion Batteries

Xiao

Liang

et al. 2023

Ind. Eng. Chem. Res.

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Transition metal nitrides are considered promising electrode materials for energy storage due to their high theoretical capacity and chemical properties. However, their performance during electrode cycling still needs further improvement. Herein, we prepare C/N-doped VNNC-9 materials by a simple one-step high-temperature calcination strategy, presenting a three-dimensional (3D) spongy structure assembled from ultrathin nanosheets of 1.5 nm thickness, which introduces abundant Zn 2+ storage sites to exhibit multifaceted Zn 2+ storage capacity. Compared with bulky structures of VNNC materials, the 3D spongy structure of the VNNC-9 material exhibits an ultrahigh capacity and high cycle life; it displays 638.9 mAh•g −1 reversible capacity at 0.1 A•g −1 current density and 616.5 mAh•g −1 discharge capacity at 1 A•g −1 after 120 cycles with 96.7% capacity retention. Furthermore, the VNNC-9 electrode exhibits 116.9 mAh•g −1 capacity after 20,000 cycles at 10 A•g −1 with nearly 100% Coulombic efficiency. Meanwhile, it achieves 541.9 W h Kg −1 energy density at 102.6 W Kg −1 power density. Besides, a series of ex situ characterizations are performed for a detailed analysis of the mixed zinc storage mechanism, the transformation into an amorphous phase, and Zn 2+ intercalation/deintercalation. In summary, this report provides a new opportunity to fabricate high-performance and environmentally friendly aqueous zinc-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Ultrathin Nanosheet Assemblies of Three-Dimensional Spongy Carbon/Nitrogen-Doped Vanadium Nitride Cathode for High-Performance Aqueous Zinc-Ion Batteries

Xiao

Liang

et al. 2023

Ind. Eng. Chem. Res.

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“…1−4 However, there are still growing concerns over their high cost of manufacturing, toxicity, and flammable electrolytes. 5,6 Thus, it is highly desirable to exploit safe, reliable, and low-cost energy storage technologies. Among various options, AZIBs have been regarded as promising candidates in the large-scale energy storage field, 7 thanks to their high theoretical capacity (820 mAh g −1 ), cost effectiveness, low redox potential (−0.76 V vs standard hydrogen electrode (SHE)), and environmental friendliness.…”

mentioning

confidence: 99%

“…In recent years, lithium-ion batteries (LIBs) have taken the leading position in the fields of electronic intelligence and large-scale energy storage equipment due to their to high energy densities. − However, there are still growing concerns over their high cost of manufacturing, toxicity, and flammable electrolytes. , Thus, it is highly desirable to exploit safe, reliable, and low-cost energy storage technologies. Among various options, AZIBs have been regarded as promising candidates in the large-scale energy storage field, thanks to their high theoretical capacity (820 mAh g –1 ), cost effectiveness, low redox potential (−0.76 V vs standard hydrogen electrode (SHE)), and environmental friendliness. − However, the uneven electric field distribution on the electrolyte/electrode interface induces Zn dendrites and causes a short circuit .…”

mentioning

confidence: 99%

“…8−13 However, the uneven electric field distribution on the electrolyte/electrode interface induces Zn dendrites 14 and causes a short circuit. 15 Besides, undesirable hydrogen evolution reactions (HERs) inevitably occur on the surface of the Zn anode caused by the decomposition of active H 2 O molecules in the Zn 2+ of the solvation structure, 16 accompanied by byproduct (e.g., Zn 4 SO 4 (OH) 6 •xH 2 O) formation and Zn corrosion generation (Figure 1a). 17,18 As a result, the Zn anodes of AZIBs suffer from low CEs and short cycling lifespans, 19−21 limiting their commercialization.…”

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confidence: 99%

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A Double-Functional Additive Containing Nucleophilic Groups for High-Performance Zn-Ion Batteries

et al. 2023

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Aqueous zinc-ion batteries (AZIBs) have attracted attention for their low cost and environmental friendliness. Unfortunately, commercialization has been hampered by several problems with dendrite growth and side reactions. Herein, we select sodium tartrate (TA-Na) as a dual-functional electrolyte additive to enhance the reversibility of AZIBs. The tartrate anions are preferentially adsorbed on the Zn surface, and then the highly nucleophilic carboxylate will coordinate with Zn2+ to promote the desolvation of [Zn(H2O)6]2+, leading to uniform Zn deposition on the beneficial (002) plane and inhibiting side reactions and dendrite growth. Consequently, the Zn|Zn cells show a long-term cycling stability of over 1500 cycles at 0.5 mA cm–2. Moreover, the Ta-Na additive improves the performance of Zn||MnO2 full cells, evidenced by a cycling life of 1000 cycles at 1 A g–1 under practical conditions with a limited Zn anode (negative/positive capacity ratio of 10/1) and controlled electrolyte (electrolyte/capacity ratio of 20 μL mAh–1).

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“…Nonetheless, an important issue has been neglected when these reported optimized conversion/alloying-type anodes to work at a low current density, an exacerbated capacity decay has been frequently observed and the corresponding cycle life together with high capacities is very limited, induced by a more complete alloying/de-alloying process. [9,10] Noteworthily, compared with cycling stability at higher current densities which mainly depends on capacitive reactions, cycling stability at lower current density imposes more strict demands on the intrinsic structure reliability of electrode materials and may encounter greater implementation difficulties. Moreover, cycling performance at a low current density also matters owing to their unique application scenarios.…”

mentioning

confidence: 99%

Ultralong Cycle Life for Deep Potassium Storage Enabled by BiOCl/MXene van der Waals Heterostructures

Cao

You

Sha

et al. 2023

Adv Funct Materials

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Conversion/alloying‐type anodes are drawing attention due to their high theoretical capacities, but inferior reversibility, especially under low current densities, has hampered potential applications. Conventional strategies mainly focus on conversion/alloying processes, whereas the intercalation process is rarely analyzed. Herein, the intercalation process is correlated with conversion/alloying processes by ion dispersion states. BiOCl/Ti3C2Tx MXene van der Waals heterostructure is selected as a proof‐of‐concept system. Multifunctional MXenes not only contribute to atomic dispersion and boosted ion diffusion at the first cycle by constructing a novel heterostructure but serve as supporting frameworks to sustain long‐term structural stability. Consequently, a cell with BiOCl/MXene anode delivers an ultralong cycle‐life of running over ten months, maintaining a high capacity of 225 mAh g−1 over 1300 cycles at 100 mA g−1 and a retention of 81.3%. These findings verify that enhanced initial intercalation can facilitate higher reversibility and shed light on developing high‐performance conversion/alloying‐type anodes.

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Encapsulation of BiOCl nanoparticles in N-doped carbon nanotubes as a highly efficient anode for potassium ion batteries

Abstract: With gradually increasing cost and shrinking crustal abundance for lithium ion batteries (LIBs), it is necessary to develop potassium ion batteries (PIBs) and explore suitable electrode materials for advanced PIBs....

Cited by 22 publications

References 51 publications

Ultrathin Nanosheet Assemblies of Three-Dimensional Spongy Carbon/Nitrogen-Doped Vanadium Nitride Cathode for High-Performance Aqueous Zinc-Ion Batteries

Ultrathin Nanosheet Assemblies of Three-Dimensional Spongy Carbon/Nitrogen-Doped Vanadium Nitride Cathode for High-Performance Aqueous Zinc-Ion Batteries

A Double-Functional Additive Containing Nucleophilic Groups for High-Performance Zn-Ion Batteries

Ultralong Cycle Life for Deep Potassium Storage Enabled by BiOCl/MXene van der Waals Heterostructures

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