Positive electrode material used for aqueous sodium-ion battery with NASICON structure and synthetic method thereof
A sodium-ion battery and cathode material technology, applied in battery electrodes, positive electrodes, structural parts, etc., can solve the problems of inability to realize large-scale and cheap industrial production, cumbersome preparation process, expensive raw materials, etc., and achieve simple and easy-to-control production process , Simplified packaging and low equipment requirements
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Embodiment 1
[0037] Anode material Na for high voltage NASICON structure aqueous sodium ion battery 3 MnTi(PO 4 ) 3 The synthetic method, its synthetic process comprises the steps:
[0038] Step 1, take by weighing 0.21294g disodium hydrogen phosphate (Na 2 HPO 4 ), 0.07987g titanium dioxide (TiO 2 ), 0.2451g manganese acetate tetrahydrate (Mn(CH 3 COO) 2 4H 2 O), take the phosphoric acid (H 3 PO 4 ) 2ml and 1ml deionized water, set aside;
[0039] Step 2, the NaH that weighed in the step 1 2 PO 4 、TiO 2 , Mn(CH 3 COO) 2 Fully mix and grind in an agate mortar, add an appropriate amount of absolute ethanol to improve the mixing uniformity, continue grinding and mixing until the absolute ethanol evaporates completely, and obtain a powder with fine particles and uniform mixing, add the phosphoric acid measured in step 1 Grinding and mixing fully with deionized water to obtain a fine and evenly mixed precursor gel;
[0040] Step 3, transfer the precursor gel obtained in step 2 ...
Embodiment 2
[0046] A high-voltage NASICON structure water-based sodium-ion battery negative electrode material K 3 CoTi(PO 4 ) 3 And synthetic method thereof, its synthetic process comprises the steps:
[0047] Step 1, take by weighing 0.26093g dipotassium hydrogen phosphate (K 2 HPO 4 ), 0.07987g titanium dioxide (TiO 2 ), 0.2491g cobalt acetate tetrahydrate (Co(CH 3 COO) 2 4H 2 O), take the phosphoric acid (H 3 PO 4 ) 2ml and 1ml deionized water, set aside;
[0048] Step 2, the KH taken in step 1 2 PO 4 、TiO 2 , Co(CH 3 COO) 2 Fully mix and grind in an agate mortar, add an appropriate amount of absolute ethanol to improve the mixing uniformity, continue grinding and mixing until the absolute ethanol evaporates completely, and obtain a powder with fine particles and uniform mixing, add the phosphoric acid measured in step 1 Grinding and mixing fully with deionized water to obtain a fine and evenly mixed precursor gel;
[0049] Step 3, transfer the precursor gel obtained i...
Embodiment 3
[0052] Anode material Na for high voltage NASICON structure aqueous sodium ion battery 3 CrTi(PO 4 ) 3 And synthetic method thereof, its synthetic process comprises the steps:
[0053] Step 1, take by weighing 0.21294g disodium hydrogen phosphate (Na 2 HPO 4 ), 0.07987g titanium dioxide (TiO 2 ), 0.2421g chromium acetate tetrahydrate (Cr(CH 3 COO) 2 4H 2 O), take the phosphoric acid (H 3 PO 4 ) 2ml and 1ml deionized water, set aside;
[0054] Step 2, the NaH that weighed in the step 1 2 PO 4 、TiO 2 , Cr(CH 3 COO) 2 Fully mix and grind in an agate mortar, add an appropriate amount of absolute ethanol to improve the mixing uniformity, continue grinding and mixing until the absolute ethanol evaporates completely, and obtain a powder with fine particles and uniform mixing, add the phosphoric acid measured in step 1 Grinding and mixing fully with deionized water to obtain a fine and evenly mixed precursor gel;
[0055] Step 3, transfer the precursor gel obtained in ...
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