English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The electrochemical performance of coconut shells biochar can be improved as a Lithium primary battery by increasing its purity. Biochar was synthesized by pyrolysis under N 2  atmospheric conditions at a temperature of 500°C for 5 hours. The methods to purify biochar were the alkaline roasting method to reduce silica content and the leaching method at room temperature using 10% w/w H 2 SO 4  to reduce metal oxide content. The used alkaline substance was 45% w/w NaOH solution under process temperature, which varied between 200-350°C with increasing the pressure. Energy-dispersive X-ray results show that biochar’s carbon purity increased from 90.18% w/w to 97.41% w/w at the alkaline roasting temperature of 300°C. The surface area of biochar is also increased from 782,112 m 2 /gram to 1218,646 m 2 /gram at the same temperature. Electro Impedance Spectroscopy test shows charge transfer and semi-infinite diffusion, which can be explained by the diffusion of Li +  ions from LiClO4 solution to purified biochar at the cathode. The charge transfer resistance value in purified biochar is less than in biochar that has not been purified. The discharge performance test shows that lithium primary batteries’ capacity increases along with biochar purity. The highest capacity of biochar is 126.21 mAh/gram at 300°C.

Porous biochar purification method from coconut shell by alkali roasting followed by leaching and its application as a lithium primary battery