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Syrah Resources

Publié le 14 janvier 2015

Battery anode produced from coated Balama spherical graphite

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Mots clés associés :   K Street | Lithium | Mozambique |

Battery anode produced from coated Balama spherical graphite

14 January 2015

BATTERY ANODE SUCCESSFULLY PRODUCED FROM COATED BALAMA SPHERICAL GRAPHITE

Highlights:

Initial feedback from Japanese anode and battery producers indicate that uncoated Balama spherical graphite is of a superior quality than those currently being utilised

An anode producer has successfully coated Balama spherical graphite and achieved specifications that exceed those of leading Chinese manufacturers

This anode producer has also successfully produced a lithium (Li) ion battery using Balama natural graphite anodes (produced from coated Balama spherical graphite) for initial test work:

o First discharge capacity of 369.95 milliamphere-hour per gram

o First discharge efficiency of 94.5%

These above initial results exceed the performance of typical Chinese natural graphite anodes and a leading synthetic graphite anode

Accordingly, both coated Balama spherical graphite and Balama natural graphite anode have satisfied and exceeds the requirements for computers, communications, consumer and Li-ion battery applications

These initial coated Balama spherical graphite specifications and test results have been distributed to major battery producers and electric vehicle manufacturers around the world

Samples of coated and uncoated Balama spherical graphite have also been distributed to some of these parties

A Preliminary Economic Study for a spherical graphite plant is underway which considers a

25,000 tonne per annum (tpa) scenario in both Mozambique and the United States for a combined production of 50,000 tpa

INTRODUCTION

Syrah Resources Limited (ASX: SYR, Syrah or the Company) is pleased to provide an update regarding its lithium (Li) ion battery grade spherical graphite development using natural graphite from the Balama Project in Mozambique.
Syrah Resources Ltd (ABN 77 125 242 284). Level 9/356 Collins Street
Melbourne 3000 Australia Ph: 03 96707264

UNCOATED SPHERICAL GRAPHITE

On 20 November 2014, Syrah announced that it has successfully produced battery grade uncoated spherical graphite from its spherical graphite pilot plant. The feed material for this was less than 100 US mesh (sub-150 micron) graphite as Li-ion battery grade spherical graphite is typically made from fine flake graphite. Initial feedback on these specifications from Japanese anode and battery producers indicates that the uncoated spherical graphite is of a superior quality than those currently being utilised.

COATED SPHERICAL GRAPHITE

The uncoated Balama spherical graphite specifications achieved were also consistent with those of leading Chinese manufacturers. Samples were subsequently sent to an anode producer for trial coating and electrochemical testing. This anode producer is a leading supplier of coated spherical graphite to major global battery producers.
Syrah is pleased to advise that this anode producer has successfully produced coated Balama spherical graphite with the following specifications. As shown in Table 1, these results exceed those of leading Chinese manufacturers.

Balama specifications

Typical Chinese specifications

d90

32.05 microns

≤ 34 microns

d50

20.35 microns

20.5 ± 1.5 microns

d10

12.81 microns

≥ 12 microns

BET specific surface area

2.01 m2/g

≤ 3.01 m2/g

Tap density

1.07 g/cm3

≥ 0.9 g/cm3

Table 1 - Specifications of coated Balama spherical graphite produced by an anode producer versus typical

Chinese specifications

A lower Brunauer-Emmett-Teller (BET) specific surface area reduces the irreversible charge loss that occurs during the first cycle whilst a higher tap density increases the volumetric energy capacity of an anode.
Syrah Resources Ltd (ABN 77 125 242 284). Level 9/356 Collins Street
Melbourne 3000 Australia Ph: 03 96707264

Figure 1 - Purified, coated Balama spherical graphite (Li-ion battery grade)

BATTERY ANODE

Following the successful coating of Balama spherical graphite, this anode producer also manufactured Li-ion batteries using Balama natural graphite anodes for discharge capacity and discharge efficiency tests.
The results of the test work performed by the anode producer is shown in Table 2, along with comparisons against the performance of typical Chinese natural graphite anodes and a leading synthetic anode. The theoretical maximum discharge capacity for natural graphite is 370 milliamphere- hour per gram (mAh/g), as noted in a paper published by Chen, Du, Wang, Yin and Shi (2012) in the International Journal of Electrochemical Science.

Balama natural graphite anode

Typical Chinese natural graphite anodes

Leading synthetic anode

First discharge capacity

369.95 mAh/g

≥ 360 mAh/g

360 to 362 mAh/g

First discharge efficiency

94.5%

≥ 89%

94.3% to 95.0%

Table 2 - First discharge capacity and efficiency results of Balama graphite anode versus typical Chinese graphite anodes and a leading synthetic graphite anode

As shown in Table 2, the Balama natural graphite anode compares extremely favourably with the theoretical maximum discharge capacity, as well as against competing Chinese natural graphite anodes and synthetic anodes.
Syrah Resources Ltd (ABN 77 125 242 284). Level 9/356 Collins Street
Melbourne 3000 Australia Ph: 03 96707264
Synthetic graphite has traditionally been a major anode material (55%) with natural graphite accounting for the balance. However, due to improvements in natural graphite quality (mainly in relation to the orientation property and tap density) and its lower cost, the use of natural graphite in anodes is rising and expected to continue. This has been confirmed from discussions with anode producers. Coated spherical graphite currently sells for US$7000 to US$10,000 per tonne compared to synthetic graphite which sells for around US$20,000 per tonne.
Consequently, Syrah has been advised by the anode producer that these initial results and the specifications achieved by coated Balama spherical graphite have satisfied and exceeds the requirements required for anodes that are used in 3C (computers / communications / consumer) and Li- ion battery applications.

NEXT STEPS

These initial specifications for coated Balama spherical graphite and the test results for Balama natural graphite anodes have been distributed to major battery producers and electric vehicle manufacturers around the world. Samples of coated and uncoated Balama spherical graphite have also been distributed to some of these parties. As a result of these successful trials, an additional 200kg of samples (in various micron sizes) will be prepared for distribution.
A Preliminary Economic Study for a spherical graphite plant is also underway which considers a 25,000 tonne per annum (tpa) production scenario in both Mozambique and the United States. Syrah believes that a combined 50,000 tpa of spherical graphite production will be required to satisfy a portion of the expected significant growth in the electric vehicle and energy storage markets.

Tolga Kumova

Managing Director
Syrah Resources Ltd
Office contact - +61 3 9670 7264
Mobile contact - +61 421 707 155
Email - [email protected]
Syrah Resources Ltd (ABN 77 125 242 284). Level 9/356 Collins Street
Melbourne 3000 Australia Ph: 03 96707264

About Syrah Resources

Syrah Resources (ASX code: SYR) is an Australian resource company that is rapidly progressing its flagship Balama Graphite and Vanadium Project in Mozambique to production. The Project currently hosts one of the largest graphite and vanadium resources in the world with an Australasian Joint Ore Reserves Committee (JORC) compliant resource of 1.15 Bt at 10.2% total graphitic carbon (TGC) and

0.23% V2O5. Balama is a 106 km2 granted mining licence located within the Cabo Delgado province in the district of Namuno in northern Mozambique. The Project is approximately 260 km by road west of Pemba and is accessible by a sealed, main road, running directly from Pemba Airport. The Port of Nacala is approximately 460 km by road south east of the Project and is the deepest port in Southern

Africa.

Syrah Resources Ltd (ABN 77 125 242 284). Level 9/356 Collins Street
Melbourne 3000 Australia Ph: 03 96707264

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Syrah Resources

CODE : SYR.AX
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Syrah Resources est une société d’exploration minière de cuivre et d'uranium basée en Australie.

Syrah Resources détient divers projets d'exploration en Australie.

Ses principaux projets en exploration sont ARCHIE-MACKENZIE, MT LYNDHURST et MUNNA en Australie.

Syrah Resources est cotée en Australie. Sa capitalisation boursière aujourd'hui est 131,9 millions AU$ (86,1 millions US$, 80,5 millions €).

La valeur de son action a atteint son plus bas niveau récent le 10 septembre 2010 à 0,07 AU$, et son plus haut niveau récent le 10 juin 2016 à 6,66 AU$.

Syrah Resources possède 263 820 000 actions en circulation.

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Communiqués de Presse de Syrah Resources
03/08/2016Change in substantial holding
03/08/2016Ceasing to be a substantial holder from MS
18/07/2016Becoming a substantial holder from MS
05/07/2016Successful Completion of A$194 Million Capital Raising
04/07/2016Company Update and Fully Underwritten A$194M Capital Raising
04/07/2016Ceasing to be a substantial holder from NAB
09/06/2016SYR Signs 50KT Spherical Graphite Offtake with Marubeni
27/05/2016Constitution
14/04/2016Ceasing to be a substantial holder
31/03/201631 December 2015 Annual Report to Shareholders
21/03/2016Syrah appoints General Manager - Sales and Marketing
21/03/2016Ceasing to be a substantial holder from NAB
15/01/2016Managing Director's Employment Contract
07/01/2016Change in substantial holding from NAB
04/01/2016Change in substantial holding from NAB
21/12/2015Appendix 3B
21/12/2015Becoming a substantial holder from NAB
27/11/2015Syrah Retail Entitlement Offer
30/09/201530/09/2015 :2015 Annual Report to Shareholders
24/08/201524/08/2015 :Strategy with Syrah shares, and change to office...
03/08/2015June Quarterly Activities and Cashflow Report
28/07/2015Change in substantial holding
28/07/2015Ceasing to be a substantial holder
18/06/2015Syrah announces economic assessment
18/06/2015Syrah Resources Announces Economic Assessment for Coated Sph...
17/03/2015Half-year Financial Report - 31 December 2014
23/02/2015Ceasing to be a Substantial Holder
30/01/2015Becoming a substantial holder
17/01/2015Ceasing to be a substantial holder
14/01/2015Syrah Resources Successfully Produces Battery Anode from Coa...
14/01/2015Ceasing to be a substantial holder
14/01/2015Becoming a substantial holder
14/01/2015Battery anode produced from coated Balama spherical graphite
14/01/2015Change to substantial holding
10/12/2014Demerger Capital Gains Tax Cost Base Apportionment
10/12/2014Market Update
07/12/2014Syrah Resources makes key operational appointments
04/12/2014Jacana Minerals Limited Prospectus Update
24/11/2014Results of Meeting
21/11/2014Pre-construction works update
28/10/2014Jacana Minerals Demerger
28/10/2014Response to ASX Price Query
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