Solvent-free synthesis and room temperature proton conductivity of new cobalt phosphite–oxalates

Huang, Liangliang; Xiu, Zhijia; Yin, Yanzhen; Ma, Yike; Bi, Yanfeng; Zheng, Zhiping

doi:10.1039/c8ce01198b

Cited by 16 publications

(4 citation statements)

References 42 publications

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“…To explore the thermal behavior of the porous ZMO HMRs during the annealing process, the precursor ZnC 2 O 4 -MnC 2 O 4 ·2H 2 O was analyzed by TGA-DSC tests at 30–600 °C. As shown in Figure S3 , the first weight loss (the corresponding DSC curve shows an endothermic peak) between 120 and 170 °C can be ascribed to the volatilization of crystal water in the precursor, and the second largest mass loss of approximately 35.1% occurs at 280–330 °C, which is caused by the decomposition of oxalic acid and the formation of ZMO [ 25 ]. There was no obvious change after 400 °C, which indicates that the sample is almost completely decomposed and no other reaction occurs.…”

Section: Resultsmentioning

confidence: 99%

Facile Construction of Porous ZnMn2O4 Hollow Micro-Rods as Advanced Anode Material for Lithium Ion Batteries

Wang

Zhang

et al. 2023

Nanomaterials

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Spinel ZnMn2O4 is considered a promising anode material for high-capacity Li-ion batteries due to their higher theoretical capacity than commercial graphite anode. However, the insufficient cycling and rate properties seriously limit its practical application. In this work, porous ZnMn2O4 hollow micro-rods (ZMO HMRs) are synthesized by a facile co-precipitation method coupled with annealing treatment. On the basis of electrochemical analyses, the as-obtained samples are first characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy techniques. The influences of different polyethylene glycol 400 (PEG 400) additions on the formation of the hollow rod structure are also discussed. The abundant multi-level pore structure and hollow feature of ZMO HMRs effectively alleviate the volume expansion issue, rendering abundant electroactive sites and thereby guaranteeing convenient Li+ diffusion. Thanks to these striking merits, the ZMO HMRs anode exhibits excellent electrochemical lithium storage performance with a reversible specific capacity of 761 mAh g−1 at a current density of 0.1 A g−1, and a long-cycle specific capacity of 529 mAh g−1 after 1000 cycles at 2.0 A g−1 and keep a remarkable rate capability. In addition, the assembled ZMO HMRs-based full cells deliver an excellent rate capacity, and when the current density returns to 0.05 A g−1, the specific capacity can still reach 105 mAh g−1 and remains at 101 mAh g−1 after 70 cycles, maintaining a material-level energy density of approximately 273 Wh kg−1. More significantly, such striking electrochemical performance highlights that porous ZMO HMRs could be a promising anode candidate material for LIBs.

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Section: Resultsmentioning

confidence: 99%

Facile Construction of Porous ZnMn2O4 Hollow Micro-Rods as Advanced Anode Material for Lithium Ion Batteries

Wang

Zhang

et al. 2023

Nanomaterials

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“…Since the aluminophosphate zeolite was first reported in 1982 [6], various metal phosphate materials have been found in related literature [7][8][9]. Presently, a lot of researches on pyramidal phosphite have been made for replacing traditional phosphate tetrahedron [10][11][12]. Novel structures with an interrupted framework can be easily formed due to the P-H bond of phosphite [13].…”

Section: Introductionmentioning

confidence: 99%

The Different Effects of Organic Amines on Synthetic Metal Phosphites/Phosphates

et al. 2020

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Four metal phosphites/phosphates crystal materials C8N4H34Al2P4O18 (1), C3N2H17GaP2O8 (2), H5In2P3O10 (3), and H9In2P3O13 (4) have been solvothermally synthesized by organic amines in the presence of mixed solvents. Structural analyses indicate that compound 1 and 2 show one-dimensional (1D) chain structures; compound 3 and 4 are three-dimensional (3D) inorganic open-framework indium phosphites. Organic amines show different mechanisms in the four compounds. The 2,2′-bipyridine organic amine acts as a template source and it breaks down small molecules, which enter into the structure of compound 1. For compound 2, 1,2-propanediamine has a role as protonated template and it forms a hydrogen bond with the inorganic skeleton structure. As for compound 3 and 4 without the organic template, the benzylamine and 2,2′-bipyridine mainly serve as structure-directing agent. Especially, compound 3 has an odd seven-ring channel, and compound 4 contains 3D intersecting six-ring, eight-ring, and 10-ring channels. X-ray diffraction (XRD), scanning electron microscopy (SEM), CHN, inductive coupled plasma (ICP), Infrared (IR), and thermal gravimetric (TG) analyze the four compounds.

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“…34,35 We are particularly interested in the use of 3-connected centers as basic structural units for the construction of inorganic open-framework materials, such as a chiral indium phosphite with intertwined host and guest helices and a layered cobalt phosphite-oxalate with proton conductivity. 36,37 In order to expand the eld of research concerning inorganic openframework materials with 3-connected centers as basic structural units, we try to introduce sulte into the inorganic framework. However, because of the instability of S in its +4 oxidation state, sulfates are usually obtained as products in most of the reactions even when SO 3 2À is used as the S source.…”

Section: Introductionmentioning

confidence: 99%

High proton conductivity behavior in a 2D metal sulfite constructed from a histidine ligand

Huang

Xiu

et al. 2019

RSC Adv.

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Solvent-free synthesis and room temperature proton conductivity of new cobalt phosphite–oxalates

Abstract: Two new cobalt phosphite–oxalates (1 and 2) have been synthesized under solvent-free conditions. Compound 2 possesses room temperature proton conductivity.

Cited by 16 publications

References 42 publications

Facile Construction of Porous ZnMn2O4 Hollow Micro-Rods as Advanced Anode Material for Lithium Ion Batteries

Facile Construction of Porous ZnMn2O4 Hollow Micro-Rods as Advanced Anode Material for Lithium Ion Batteries

The Different Effects of Organic Amines on Synthetic Metal Phosphites/Phosphates

High proton conductivity behavior in a 2D metal sulfite constructed from a histidine ligand

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