Material structure and chemical bond effect on the electrochemical performance of black phosphorus-graphite composite anodes

Shin, Hosop; Zhang, Jianyu; Lu, Wei

doi:10.1016/j.electacta.2019.03.149

Cited by 21 publications

(30 citation statements)

References 28 publications

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“…After the two are compounded by solvothermal reaction, The composite material has good comprehensive properties, which can be attributed to the structural stability brought by the porous carbon skeleton and the fixing effect of P−C bond and P−O−C bond on BP. Because the composite material has a hollow porous structure that can provide volume expansion space for BP and a chemical bond that alleviates BP shedding, the synergistic effect of the two makes BP/HPC have more excellent rapid charge and discharge performance and cycle performance . In order to show the relatively inexpensive and excellent electrochemical performance of this composite, Table lists carbon materials and BP/C composites with different contents of BP, and makes a simple comparison with this work.…”

Section: Resultsmentioning

confidence: 99%

Black Phosphorus/Hollow Porous Carbon for High Rate Performance Lithium‐Ion Battery

Zhou

Jia

et al. 2020

ChemElectroChem

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Black phosphorus (BP) has received wide attention due to its high theoretical capacity (2596 mAh g−1) and good electron mobility, but its cyclic stability is poor. Meanwhile, it can be complementary to carbon material, which has low theoretical capacity but good cycle stability. In this work, we use solvothermal reaction to modify hard carbon materials with black phosphorous (BP). When used as anode material for lithium‐ion batteries, the composite will show a higher specific capacity, cyclic stability and rate performance. It shows a high reversible capacity of 350 mAh g−1 after 1000 cycles at 1000 mA g−1 current density. But for pure carbon, it only shows a general reversible capacity of 180 mAh g−1. Here, the lower content of black phosphorous and the use of hard carbon materials make the material more economically advantageous. And it can be used as an ideal material for cycling at high currents in the future.

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Section: Resultsmentioning

confidence: 99%

Black Phosphorus/Hollow Porous Carbon for High Rate Performance Lithium‐Ion Battery

Zhou

Jia

et al. 2020

ChemElectroChem

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“…As demonstrated in our earlier work and other previous studies, RP can be transformed into BP by HEMM, and maximum BP crystallinity can be achieved under 6 h of HEMM process. 1,16,17,21 As shown in Figure 1b, large RP particle sizes with sharp edges changed to a wide range of BP particle sizes (75 nm to 71 μm, d 50 = 5.7 μm) with irregular shapes after the HEMM process. The ball-milled, fine BP particles adhered to one another, resulting in agglomerated secondary particles.…”

Section: Electrochemical Tests-bp-g/limentioning

confidence: 90%

“…Our previous study demonstrated that the dramatic capacity fade of BP 0.9 G 1 was mainly attributed to contact loss resulting from particle cracking or pulverization during the volume change. 21 This mechanical failure of BP 0.9 G 1 also caused further electrolyte decomposition, leading to the formation of a thick SEI layer. In contrast, BP 0.3 G 1 did not show observable cracking or pulverization, suggesting that its structural integrity was well maintained over the 50 cycles.…”

Section: Synthesis Of Bp-g Composites-mentioning

confidence: 99%

“…In contrast, BP 0.3 G 1 did not show observable cracking or pulverization, suggesting that its structural integrity was well maintained over the 50 cycles. 21 The increased structural stability of BP 0.3 G 1 is likely due to both the higher amount of ball-milled graphite, which forms a thick carbon buffering matrix in the electrode, and the for-mation of robust P-C bonds unique to this ratio BP 0.3 G 1 . Different from Si/C or SiO x /C materials, the BP-G composite structure and P-C bonds are strongly affected by the phosphorus/carbon composition.…”

Section: Synthesis Of Bp-g Composites-mentioning

confidence: 99%

“…Different from Si/C or SiO x /C materials, the BP-G composite structure and P-C bonds are strongly affected by the phosphorus/carbon composition. 8,21 According to a previous DFT calculation, 27 a preferred type of P-C crystal structure is phosphorus-doped graphite when the phosphorus content is low. This structure retains strong C-C bonds in a graphene layer-like structure and does not require significant breakup of P-P bonds to generate P-C composites, forming robust P-C bonds between a phosphorene-like structure and a graphene layer-like structure.…”

Section: Synthesis Of Bp-g Composites-mentioning

confidence: 99%

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A Comprehensive Study of Black Phosphorus-Graphite Composite Anodes and HEMM Synthesis Conditions for Improved Cycle Stability

Shin

Zhang

2019

J. Electrochem. Soc.

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Black phosphorus (BP) is a high capacity anode material and has been synthesized with different carbon materials to mitigate volume changes during lithiation/delithiation. There is a large discrepancy in cycle stability of phosphorus-carbon materials in the literature, and factors affecting cycle performance are not well elucidated. In this study, the electrochemical performance of a black phosphorusgraphite (BP-G) composite anode material with regards to (1) material composition, (2) electrolyte additive, (3) ballmilling synthesis conditions, and (4) electrode loading is thoroughly investigated. In particular, this study reveals how ballmilling synthesis conditions correlate to electrochemical performance. Results show that the main contributors to cycle stability of BP-G composites are material composition and electrode loading, while first cycle efficiency and reversible capacity are strongly dependent on ballmilling synthetic conditions. Composition control is the most effective way to mitigate the volume change-induced mechanical degradation of BP-G composites, while ballmilling processing optimization is the main contributor to BP activation in BP-G composites, improving reversible capacity and first cycle efficiency. We thereby propose an optimized, HEMM-based synthetic route for improved BP-G materials. This study provides a comprehensive understanding of BP-G electrochemical performance and the correlation to HEMM synthesis conditions.

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Recent Advances and Optimization Strategies on the Electrolytes for Hard Carbon and P‐Based Sodium‐Ion Batteries

Shen

Shi

Roy

et al. 2020

Adv Funct Materials

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Hard carbons (HCs) and P‐based materials (including red phosphorus, black phosphorus, and metal phosphides) represent the most promising anodes for the commercialization of sodium ion batteries. The electrochemical performance of SIBs is determined not only by the structure of electrode materials, but it is also highly dependent on the matched electrolyte. In this review, the optimization, the matching strategies and the advanced characterization techniques of the electrolytes system for HCs and P‐based anodes are discussed based on the recent advance. The effective optimization strategies are summarized from three aspects: sodium salts, solvents, and additives. The challenges and perspectives are also discussed in this review.

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Material structure and chemical bond effect on the electrochemical performance of black phosphorus-graphite composite anodes

Cited by 21 publications

References 28 publications

Black Phosphorus/Hollow Porous Carbon for High Rate Performance Lithium‐Ion Battery

Black Phosphorus/Hollow Porous Carbon for High Rate Performance Lithium‐Ion Battery

A Comprehensive Study of Black Phosphorus-Graphite Composite Anodes and HEMM Synthesis Conditions for Improved Cycle Stability

Recent Advances and Optimization Strategies on the Electrolytes for Hard Carbon and P‐Based Sodium‐Ion Batteries

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