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Condensed polyanion electrode

A technology for polycondensing anions and anions, which can be used in battery electrodes, batteries, circuits, etc., and can solve the problem of expensive lithium

Active Publication Date: 2014-06-04
FARADION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion battery technology has attracted widespread attention in recent years and provides the preferred portable battery for most electronic devices in use today; however, lithium is not an inexpensive source of the metal and is prohibitively expensive for large-scale applications

Method used

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Examples

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example 1

[0065] Target material: Na 2 MM 2 o 8

[0066] Starting material: Na 2 CO 3 (0.57g)

[0067] MnCO 3 (0.89g)

[0068] MoO 3 (2.22g)

[0069] Furnace parameters: muffle furnace, gas type (ambient air)

[0070] Heating rate: 5°C / min; temperature: 650°C; pause time: 6 hours

example 2

[0072] Target material: Na 2 NiMo 2 o 8

[0073] Starting material: Na 2 CO 3 (0.75g)

[0074] NiO(0.53g)

[0075] MoO 3 (2.03g)

[0076] Furnace parameters: muffle furnace, gas type (ambient air)

[0077]Heating rate: 3°C / min; temperature: 650°C; pause time: 6 hours

example 3

[0079] Target material: Na 2 CoMo 2 o 8

[0080] Starting material: Na 2 CO 3 (0.75g)

[0081] CoCO 3 (0.84g)

[0082] MoO 3 (2.03g)

[0083] Furnace parameters: muffle furnace, gas type (ambient air)

[0084] Heating rate: 5°C / min; temperature: 650°C; pause time: 6 hours

[0085] Example 4a:

[0086] Target material: Na 4 mn 3 (PO4) 2 (P 2 o 7 )

[0087] Starting material: Na 4 P 2 o 7 (1.29g)

[0088] MnCO 3 (1.67g)

[0089] NH 4 h 2 PO 4 (1.11g)

[0090] Furnace parameters: muffle furnace, gas type (ambient air)

[0091] Heating rate: 3°C / min; temperature: 300°C; pause time: 6 hours

[0092] Example 4b:

[0093] Target material: Na 4 mn 3 (PO 4 ) 2 (P 2 o 7 )

[0094] Starting material: Na 4 P 2 o 7 (1.29g)

[0095] MnCO 3 (1.67g)

[0096] NH 4 h 2 PO 4 (1.11g)

[0097] Furnace parameters: muffle furnace, gas type (ambient air)

[0098] After th...

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Abstract

The invention relates to electrodes that contain active materials of the formula: Naa XbMcM'd(condensed polyanion)e(anion)f; where X is one or more of Na+, Li+ and K+; M is one or more transition metals; M' is one or more non-transition metals; and where a>b; c > 0; d >= 0; e >= 1 and f >= 0. Such electrodes are useful in, for example, sodium ion battery applications.

Description

technical field [0001] The present invention relates to electrodes comprising active materials with polycondensed anionic materials and to the use of said electrodes, for example in sodium ion battery applications. The invention also relates to some new materials and the use of these materials, for example as electrode materials. Background technique [0002] Sodium-ion batteries are similar in many respects to the lithium-ion batteries commonly used today; they are reusable secondary batteries consisting of an anode (the negative electrode), a cathode (the positive electrode), and an electrolyte material, all capable of storing energy, and their Both charge and discharge via similar reaction mechanisms. When a sodium-ion (or lithium-ion battery) is charged, Na + (or Li + ) ions deintercalate and move towards the anode. Simultaneously, charge-balancing electrons pass from the cathode through an external circuit containing the charger, and into the anode of the battery. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58C01B25/42C01B25/44G02F1/155H01B1/08
CPCH01M4/5825C01B25/44Y02E60/12H01M10/054H01B1/08C01B25/38C01B25/42C01G39/006C01G45/006C01G51/006C01G53/006Y02E60/10C01D13/00H01M2220/30
Inventor J·巴克
Owner FARADION LTD
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