網上爬文的結果是鋰聚合物的電池要好過鋰離子。
還需要詢問APPLE,HTC 它們選擇電池的考量。
三星網站有LIVE CHAT。於是我問了他們的技術人員,下面是大概整理過的問答。
先發個截圖,證明不是杜撰。

May I want know why your phone battery is still using Li-ion not Li-polymer?
•Anthony :
Let me analyze it for you and provide you assistance. Thank you.
Actually I did checked and the thing is, Li-ion is the standard battery that we are using and Lithium-ion batteries are common in consumer electronics.
lithium polymer technology had problems with high internal resistance. Other challenges included longer charge times and lower maximum discharge rates compared to more mature technologies
Chemistry, performance, cost and safety characteristics vary across LIB types
Why Iphone 5 and HTC are using Li-polymer?
•Anthony :
I am sorry for that but this might be a good proposal that we can forward to Engineering for future products customer.
There are units like laptop computers.
There might be some models that uses Lithium Polymer and I saw those 900 series laptops.
But this is a good proposal that we can forward to management for enhance the battery components and capability of all Samsung products specially for mobile phones.
問:爲什麽你們的手機電池用的是鋰離子(Li-ion)而不是(Li-polymer)鋰聚合物?
答:讓我分析下你的問題來提供協助,謝謝。
我查了一下,鋰離子電池是我們在消費電子產品中使用的標準電池。
聚合物電池有高内阻問題,另一個問題是需要長的充電時間再就是更低的最大放電率,相比更成熟的化學,表現,成本和安全等因素相對于鋰離子電池。
問:爲什麽蘋果5和HTC 的手機用聚合物電池?
很抱歉,不過是可能是很好的提議我們可以轉達給工程人員用於未來的產品。
我們有用聚合物電池的筆電,我見過900系列有用。
不過是很好的提議,我們會把提議轉交給管理層用於加強所有三星產品特別是手機電池元件。